Acoustic sensor and manufacturing method. The acoustic sensor includes: a base including a first silicon layer, a first oxide layer and a second silicon layer stacked, and a back cavity; a second oxide layer formed on the base; a piezoelectric unit formed on the second oxide layer and including a first electrode layer, a piezoelectric layer and a second electrode layer stacked; a first slit formed at a middle portion of the second electrode layer and passing the second electrode layer, the piezoelectric layer and the first electrode layer; a second slit formed at a middle portion of the second silicon layer and passing the second silicon layer and the second oxide layer; an additional membrane filled in the first slit and not filled in the second slit. The SPL and structural reliability are effectively improved, and the material type is not limited by dry film type materials.
Disclosed in the present invention are an acoustic sensor and a preparation method therefor. The acoustic sensor comprises: a substrate unit, wherein the substrate unit comprises a first silicon layer, a first oxide layer, and a second silicon layer sequentially stacked from bottom to top, and a back cavity is formed in the substrate unit; a second oxide layer formed on the substrate unit; a piezoelectric unit formed on the second oxide layer, wherein the piezoelectric unit comprises a first electrode layer, a piezoelectric layer, and a second electrode layer sequentially stacked from bottom to top; a first slit, wherein the first slit is formed in the middle of the second electrode layer, and the first slit sequentially passes through the second electrode layer, the piezoelectric layer, and the first electrode layer; a second slit, wherein the second slit is formed in the middle of the second silicon layer, and the second slit sequentially passes through the second silicon layer and the second oxide layer; and an additional film layer filled in the first slit, wherein the additional film layer is not filled in the second slit. Compared with the prior art, the present invention can effectively improve the SPL and the structural reliability, and the material type is not limited by a dry film type material any more.
G01H 11/08 - Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means using piezoelectric devices
A microelectromechanical system membrane includes spacers, counter electrodes, a first diaphragm and a second diaphragm. The spacers and the counter electrodes are at the same level and arranged alternatively on cross sections of the microelectromechanical system membrane. The first diaphragm and the second diaphragm are respectively located on opposite sides of the spacers and hermetically connected. The first diaphragm is provided with first projections spaced arranged in the first direction, and the second diaphragm is provided with second projections spaced arranged alternately in the first direction. The first projections include first front walls and first back walls disposed opposite in the first direction, and the second projections include second front walls and second back walls disposed opposite in the first direction. At least some of the first front and back walls, the second front and back walls are configured to be sub-corrugation structures. The microelectromechanical system membrane has an improved robustness.
A MEMS element and an electro-acoustic conversion apparatus, relating to the technical field of microphones. The MEMS element comprises spacers, counter electrodes, a first diaphragm, and a second diaphragm. The spacers and the counter electrodes are located on the same horizontal plane and are alternately arranged in a cross section of the MEMS element; the first diaphragm and the second diaphragm are respectively disposed on opposite sides of the spacers and are in airtight connection with one another; the first diaphragm comprises a plurality of first protrusions disposed at intervals along a first direction, and the second diaphragm comprises a plurality of second protrusions disposed at intervals along the first direction, wherein the first protrusions and the second protrusions are in one-to-one correspondence and align with one another to form cavities, and the counter electrodes are suspended within the cavities; each first protrusion comprises a first front wall and a first rear wall, each second protrusion comprises a second front wall and a second rear wall, and at least part of the first front walls, the first rear walls, the second front walls, or the second rear walls are sub-corrugated structures. The MEMS element effectively reduces the maximum stress applied to the diaphragms under high-pressure impact, thus ultimately enhancing the mechanical robustness of the apparatus.
Provided in the present application are a lens surface defect detection method and apparatus, and a device and a readable storage medium. The specific implementation solution comprises: acquiring a RAW image captured by an imaging module that carries a lens to be tested; separating the RAW image into four single-channel images, and performing mean filtering processing on each single-channel image; performing a subtraction operation on each filtered image and a corresponding single-channel image, so as to obtain a difference image, and performing binarization processing on each difference image; acquiring a corresponding image connected component on the basis of each binarized difference image, and mapping the image connected components of all channels to the RAW image for merging; and if the total number of pixel points of a merged connected component is greater than or equal to a preset threshold value, outputting a lens surface defect detection result on the basis of image position information of the merged connected component. In the present application, lens surface defect detection is performed by means of computer vision without the need for a complex detection instrument and without the need for relying on manual labor to identify a lens surface defect, thereby effectively reducing the detection cost and the detection workload, and improving the detection accuracy.
The present application provides a camera calibration method, a device, and a readable storage medium. The specific implementation solution comprises: acquiring spectral response sensitivity of a camera, spectral power distribution data of different light sources, and spectral reflectivity of multiple color samples; for each light source, on the basis of the spectral response sensitivity, the spectral reflectivity and the corresponding spectral power distribution data, calculating a response parameter of the camera with respect to each color sample; on the basis of a current color correction matrix (CCM), correcting the response parameter to obtain a corrected response parameter; if it is determined on the basis of the corrected response parameters corresponding to all the color samples that the CCM does not satisfy an effective correction condition, adjusting an element value of the current CCM until the CCM satisfies the effective correction condition; and calibrating an adjusted CCM corresponding to each light source to the camera. In the present application, by means of mathematical modeling, the response of a camera to a color sample in a real light source environment is simulated to calibrate a CCM, thereby effectively reducing the calibration complexity and efficiency.
A capacitive sensing circuit and method. The capacitive sensing circuit comprises a charge pump, an MEMS chip, an analog signal modulator and a digital signal modulator, wherein the analog signal modulator is configured to perform analog signal modulation according to an output signal from the MEMS chip and an output signal from the analog signal modulator; and the digital signal modulator is configured to perform digital signal modulation on the output signal from the analog signal modulator, and outputs a modulated signal by using a digital interface. By directly using an input signal from an MEMS chip and an output signal from an analog signal modulator as input signals for analog modulation, harmonic distortion is reduced.
G01D 5/24 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying capacitance
8.
Capacitive sensing circuit and capacitive sensing method
Provided is a capacitive sensing circuit and capacitive sensing method. The circuit includes a charge pump, a micro-electro-mechanical system (MEMS) chip, an analog signal modulator configured to perform analog signal modulation to an output signal of the MEMS chip and an output signal of the analog signal modulator, and a digital signal modulator configured to perform digital signal modulation to the output signal of the analog signal modulator, and output a modulated signal by a digital interface. By directly using the input signal of the MEMS chip and the output signal of the analog signal modulator as the input signal for analog modulation, the harmonic distortion is reduced.
The present invention provides an inertial sensor and a manufacturing method. The manufactured inertial sensor comprises a base body structure and a movable inertial structure arranged at one side of the base body structure and spaced apart from same; the base body structure comprises a base layer, a circuit layer attached to the side of the base layer close to the movable inertial structure, and a blocking structure arranged on the circuit layer; the blocking structure is made of an insulating material; a plurality of slots running through in the thickness direction are formed in the circuit layer; the blocking structure comprises a plurality of protruding blocks which are connected to the circuit layer and protrude from the surface of the circuit layer facing away from the base layer; and the slots are blocked by insertion of the protruding blocks in a one-to-one manner. The inertial sensor has the advantages of reducing likeliness of viscosity, having a stable structure, and having a small limitation on the minimum size of the base body structure and the movable inertial structure, thereby facilitating improvement of the final performance of the inertial sensor.
G01C 21/16 - NavigationNavigational instruments not provided for in groups by using measurement of speed or acceleration executed aboard the object being navigatedDead reckoning by integrating acceleration or speed, i.e. inertial navigation
G01C 19/00 - GyroscopesTurn-sensitive devices using vibrating massesTurn-sensitive devices without moving massesMeasuring angular rate using gyroscopic effects
An inertial sensor and a method therefor are provided. The inertia sensor includes a first substrate; a first insulation layer stacked on the first substrate; a first conducting layer stacked on the first insulation layer and including first openings; stoppers corresponding to the first openings and embedded into the first openings to close the first openings; a second insulation layer stacked on the first conducting layer and including a cavity; a second conducting layer stacked on the second insulation layer and including second openings; a first bonding structure stacked on the second conducting layer; a second substrate; and a second bonding structure stacked on the second substrate, the second bonding structure and the first bonding structure being bonded together to define a closed space therebetween. Thus, a structure thereof remains stable, thereby minimizing the feature size and bringing more room of device performance improvement.
B81C 1/00 - Manufacture or treatment of devices or systems in or on a substrate
G01P 15/125 - Measuring accelerationMeasuring decelerationMeasuring shock, i.e. sudden change of acceleration by making use of inertia forces with conversion into electric or magnetic values by capacitive pick-up
Disclosed in the present invention are an inertial sensor and a manufacturing method therefor. The inertial sensor comprises a first substrate; a dielectric layer; a first conductive layer, the first conductive layer being provided therein with a plurality of first openings; a plurality of second conductive layers, the plurality of second conductive layers being bonded to the first conductive layer by means of bonding structures, gaps being formed between the adjacent second conductive layers from the bottom to the top, the adjacent second conductive layers being connected by means of connection parts, and each second conductive layer being provided with a plurality of second openings; a second substrate, the second substrate covering the first substrate, and the second substrate and the first substrate defining a closed space therebetween. Compared with the prior art, the present invention is provided with a plurality of second conductive layers. Therefore, compared with those for traditional single-layer structures, a mold is reduced to a lower size, thereby reducing manufacturing costs and improving the integration between a device and a portable consumer application. In addition, a relatively large movable conductive structure has a larger surface area, thereby improving XY-axis sensitivity.
An inertial sensor and a method therefor. The inertial sensor includes: a first substrate; a medium layer stacked on the first substrate; a first electric-conductive layer stacked on the medium layer, first openings being formed in the first electric-conductive layer and spaced from one another; second electric-conductive layers being bonded to the first electric-conductive layer through bonding structures, a gap being formed between adjacent second electric-conductive layers, which are connected to each other by a connection part, and second openings being formed in each of the second electric-conductive layers and spaced from one another; and a second substrate covering the first substrate, a closed space being formed between the second substrate and the first substrate. Compared with a traditional single-layer structure, the die size is reduced, the manufacturing cost is reduced, and the integration of device into portable consumer applications is improved, and XY axis sensitivity is improved.
G01C 21/16 - NavigationNavigational instruments not provided for in groups by using measurement of speed or acceleration executed aboard the object being navigatedDead reckoning by integrating acceleration or speed, i.e. inertial navigation
B81B 3/00 - Devices comprising flexible or deformable elements, e.g. comprising elastic tongues or membranes
B81C 1/00 - Manufacture or treatment of devices or systems in or on a substrate
An MEMS device, including: a substrate having a back cavity; a diaphragm connected to the substrate and covers the back cavity, the diaphragm includes first and second membranes arranged oppositely, and accommodation space is formed therebetween; a counter electrode in the accommodation space and includes annular beams and first spokes, the annular beams are successively arranged at intervals, and the first spokes extend radially outward from an axis of the counter electrode, an end of the first spokes is connected to the substrate, and two adjacent first spokes and two adjacent annular beams jointly form a first through hole; and a support arranged corresponding to the first through hole, and opposite ends of the support are respectively connected to the first and second membranes. This configuration is more sensitive to sound pressure and is conducive to realizing low-noise microphone while optimizing sensitivity.
The present invention provides a counter electrode structure and a dual-membrane MEMS microphone. The dual-membrane MEMS microphone comprises a substrate and a capacitor system. The capacitor system comprises a first electrode membrane and a second electrode membrane which are arranged at an interval to form an accommodating cavity, and the two electrode membranes have corrugated cross-sectional shapes in the radial direction. The wave crest of one electrode membrane is connected to the wave trough of the other electrode membrane to form a supporting body. The capacitor system further comprises a counter electrode structure suspended in the accommodating cavity. The counter electrode structure comprises a plurality of circumferential beams arranged at intervals from inside to outside and a plurality of radial beams connected to the circumferential beams and extending from inside to outside, a via hole extending around the center of the counter electrode structure is formed between every two adjacent circumferential beams inside and outside, and the supporting body passes through the via holes and is spaced apart from the edges of the via holes. The arrangement of a counter electrode structure enables two electrode membranes to achieve a dual-corrugated membrane structure, which is more sensitive to sound pressure and can significantly improve the sensitivity performance.
An MEMS sensor and a method therefor. The MEMS sensor includes a buried electrode layer; a top electrode layer spaced from the buried electrode layer, a cavity being formed between the buried electrode layer and the top electrode layer; and a device layer received the cavity. The device layer includes movable mass blocks spaced from one another, each of which is supported on the buried electrode layer through a respective anchor portion, a preset gap is formed between each movable mass block and the top electrode layer, and the preset gap formed by one of the movable mass blocks is different from the preset gap formed by another one of the movable mass blocks. This structure allows for greater flexibility in design and provides higher sensitivity and larger actuation force on the sensor, and die size reduction is achieved while achieving more complex designs with higher accuracy and miniaturization.
Provided are an MEMS sensor and a preparation method therefor. The MEMS sensor comprises: a bottom electrode layer (1) and a top electrode layer (2) forming a cavity (3), and a device layer (4) accommodated in the cavity (3). The device layer (4) comprises a plurality of movable mass blocks (41) arranged at intervals. Preset gaps are formed between the movable mass blocks (41) and the top electrode layer (2), and the preset gaps formed by different movable mass blocks (41) are different from each other. The preparation method for the MEMS sensor comprises: S1, sequentially forming a bottom electrode layer (1), a sacrificial layer (5), a device layer (4), and a top electrode layer (2) from bottom to top; S2, etching the device layer (4) to form a plurality of movable mass blocks (41) arranged at intervals; and S3, releasing the sacrificial layer (5). A differential output electrical signal is formed by means of the difference of the preset gaps, thereby achieving the high sensitivity and volume miniaturization of the MEMS sensor.
H04R 31/00 - Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
G01L 9/12 - Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by electric or magnetic pressure-sensitive elementsTransmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in capacitance
G01L 9/00 - Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by electric or magnetic pressure-sensitive elementsTransmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
G01P 15/125 - Measuring accelerationMeasuring decelerationMeasuring shock, i.e. sudden change of acceleration by making use of inertia forces with conversion into electric or magnetic values by capacitive pick-up
H01G 5/16 - Capacitors in which the capacitance is varied by mechanical means, e.g. by turning a shaftProcesses of their manufacture using variation of distance between electrodes
H01G 5/00 - Capacitors in which the capacitance is varied by mechanical means, e.g. by turning a shaftProcesses of their manufacture
17.
FILM BULK ACOUSTIC RESONATOR MANUFACTURING METHOD, FILM BULK ACOUSTIC RESONATOR AND FILTER
A film bulk acoustic resonator manufacturing method provided in the present invention comprises: providing a substrate having a top surface; forming a dielectric material layer on the top surface of the substrate; forming a bottom electrode on the surface of the dielectric material layer away from the substrate; forming a piezoelectric material layer on the surface of the bottom electrode away from the substrate; forming an intermediate metal layer on the surface of the piezoelectric material layer away from the substrate; forming a mass load layer on the surface of the intermediate metal layer away from the substrate; and forming a top electrode on the surface of the mass load layer away from the substrate. This mode increases process options, and increases the flexibility of forming multi-mass loads of film bulk acoustic resonators below top electrodes and in filters having the film bulk acoustic resonators, thereby improving the sensitivity of the filters.
H03H 3/02 - Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks
18.
ACOUSTIC WAVE RESONATOR AND PREPARATION METHOD THEREFOR
An acoustic wave resonator and a preparation method therefor. The acoustic wave resonator comprises: a substrate (1), provided with a plurality of cavities (2); a plurality of piezoelectric units, the plurality of piezoelectric units being in one-to-one correspondence with the plurality of cavities (2), the piezoelectric units covering the cavities (2), and each piezoelectric unit comprising a first electrode layer (4), a piezoelectric layer (5) and a second electrode layer (8) which are sequentially stacked from bottom to top; a protective layer (9), stacked on the piezoelectric units; and a series unit, having one end electrically connected to the first electrode layer (4) of one piezoelectric unit and the other end electrically connected to the second electrode layer (8) of another piezoelectric unit, so as to connect the two piezoelectric units in series. The protective layer (9) is provided on the piezoelectric units, such that the piezoelectric units are protected from being further damaged by downstream processing, and the acoustic wave resonator has a better Q value and a better coupling coefficient.
An acoustic resonator and a manufacture method thereof. The acoustic resonator includes: a substrate having cavities; piezoelectric units one by one corresponding to the cavities, the piezoelectric units cover the cavities, and each piezoelectric unit includes a first electrode layer, a piezoelectric layer and a second electrode layer sequentially stacked from bottom to top; a protective layer stacked on the piezoelectric unit; a series unit having one end electrically connected to the first electrode layer of one of the piezoelectric units, and the other end electrically connected to the second electrode layer of another one of the piezoelectric units, so as to connect the two piezoelectric units in series. Compared with the 10 related art, the piezoelectric unit is protected from further risk of damages in subsequent manufacturing processes by providing a protective layer on the piezoelectric unit, so that the acoustic resonator has better Q value and coupling coefficient.
H03H 9/17 - Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator
H03H 3/02 - Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks
The method for fabricating a FBAR provided according to the present invention includes providing a substrate, forming a dielectric material layer on a surface of the substrate away from the substrate, forming a bottom electrode on a surface of the dielectric material layer away from the substrate, forming a piezoelectric material layer on a surface of the bottom electrode away from the substrate, forming an intermediate metal layer on a surface of the piezoelectric material layer away from the substrate, forming a mass load layer on a surface of the intermediate metal layer away from the substrate, and forming a top electrode on a surface of the mass load layer away from the substrate. In this way, process choices are increased, and flexibility in multiple mass load formation of the FBAR below top electrode and in a filter having the FBARs are increased, thereby improving sensitivity in the filter.
H03H 3/04 - Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks for obtaining desired frequency or temperature coefficient
H03H 9/13 - Driving means, e.g. electrodes, coils for networks consisting of piezoelectric or electrostrictive materials
H03H 9/17 - Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator
Provided in the present invention are an MEMS device and a method for manufacturing the MEMS device. The MEMS device comprises a cap piece and a device piece, wherein the device piece comprises a silicon substrate, at least two device structure layers and at least one electrically conductive structure layer, every two adjacent device structure layers being coupled to each other by means of the corresponding electrically conductive structure layer; the device piece has a functional cavity, which comprises a first area, a second area and a third area; the at least two device structure layers and the at least one electrically conductive structure layer each stretch across the first area, the second area and the third area; and the at least two device structure layers and the at least one electrically conductive structure layer collaboratively form a first movable structure in the first area, collaboratively form an anchor point in the second area, and collaboratively form a second movable structure in the third area.
B81B 7/02 - Microstructural systems containing distinct electrical or optical devices of particular relevance for their function, e.g. microelectro-mechanical systems [MEMS]
G01P 15/14 - Measuring accelerationMeasuring decelerationMeasuring shock, i.e. sudden change of acceleration by making use of gyroscopes
G01C 19/56 - Turn-sensitive devices using vibrating masses, e.g. vibratory angular rate sensors based on Coriolis forces
A MEMS device and a method for manufacturing the MEMS device are provided. The MEMS device includes a cap sheet and a device sheet. The device sheet includes a silicon substrate, at least two device structure layers, and at least one conductive structure layer, and each two adjacent device structure layers are coupled via a corresponding conductive structure layer. The device sheet defines a functional cavity having a first region, a second region, and a third region. The at least two device structure layers and the at least one conductive structure layer each are across the first region, the second region, and the third region, and the at least two device structure layers and the at least one conductive structure layer cooperatively form a first movable structure in the first region, define an anchor point in the second region, and form a second movable structure in the third region.
An MEMS diaphragm and an MEMS sensor. The MEMS diaphragm includes: a main diaphragm including a main body sensing portion and beam portions, and the beam portions are connected to an outer edge of the main body sensing portion; an additional material layer provided on the beam portions or provided on both an edge of the main body sensing portion and on the beam portions. The intrinsic tensile stress of the additional material layer is greater than an intrinsic tensile stress of the main body sensing portion. An additional material layer is provided, which mechanically reinforces the diaphragm region experiencing high stress during a pressure pulse, and the intrinsic tensile stress of the additional material layer is greater than the main body sensing portion, thereby ensuring the compliance of the main diaphragm.
Disclosed in the present invention are a MEMS diaphragm and a MEMS sensor. The MEMS diaphragm comprises: a main diaphragm, the main diaphragm comprising a main body sensing part and fixing parts, and the plurality of fixing parts being annularly connected to the outer edge of the main body sensing part at intervals; and an additional material layer, the additional material layer being arranged on the fixing parts, or the additional material layer being arranged on the edge of the main body sensing part and the fixing parts, wherein the internal stress of the additional material layer is greater than the internal stress of the main body sensing part. Compared with the prior art, in the present invention, the additional material layer is arranged on the main diaphragm, the additional material layer is mechanically reinforced in a diaphragm area subjected to a high stress during pressure pulses, and the internal stress of the additional material layer is greater than the internal stress of the main body sensing part, so that the flexibility of the main diaphragm can be guaranteed.
Disclosed in the present invention are an acoustic sensor and a manufacturing method therefor. The acoustic sensor comprises: a substrate unit, the substrate unit comprising a first silicon layer, a first oxide layer and a second silicon layer which are successively stacked from bottom to top, and the substrate unit being internally provided with a back chamber; a second oxide layer; a piezoelectric unit, the piezoelectric unit comprising a first electrode layer, a piezoelectric layer and a second electrode layer which are successively stacked from bottom to top, and the piezoelectric unit being internally provided with a slit and an opening; a metal pad; and an additional film layer, comprising a first portion, a second portion and a third portion, the first portion being formed in the slit, the side wall of the first portion being attached to the inner wall surface of the slit, the bottom wall of the first portion covering an opening of the bottom portion of the slit, and the side wall and the bottom wall defining a recess having an opening in the top portion. Compared with the prior art, the present invention can effectively improve the SPL and structural reliability, and the thickness of the additional film layer is uniformly distributed on the surface of the piezoelectric unit, thus being suitable for acoustic sensors having large areas.
G01H 11/08 - Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means using piezoelectric devices
B06B 1/06 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
Disclosed in the present invention are an acoustic sensor and a preparation method therefor. The acoustic sensor comprises: a substrate unit, the substrate unit comprising a first silicon layer, a first oxide layer and a second silicon layer, which are sequentially stacked from bottom to top, and a back cavity being formed in the substrate unit; a second oxide layer; a piezoelectric unit formed on the second oxide layer, the piezoelectric unit comprising a first electrode layer, a piezoelectric layer and a second electrode layer, which are sequentially stacked from bottom to top, and a slit and an opening being formed in the piezoelectric unit; a metal gasket, which is stacked on the first electrode layer at the opening; and an additional film layer, which comprises a first part and a second part, the first part being laid flat on the second electrode layer and covering the slit, and the second part being laid flat on the metal gasket. Compared with the prior art, the piezoelectric unit of the present invention can move at the maximum displacement and vibrate with the minimum restriction, thereby effectively improving the SPL and structural reliability; and the thickness of the additional film layer is uniformly distributed on the top surface of the piezoelectric unit, thus adapting to an acoustic sensor with a large area.
An acoustic transducer includes: substrate including first silicon layer, first oxide layer and second silicon layer, back chamber is formed therethrough; second oxide layer on the substrate; piezoelectric unit on the second oxide layer and including first electrode layer, piezoelectric layer and second electrode layer; slit and opening formed in the second electrode layer; metal pad stacked on the first electrode layer at the opening; and additional film layer including first and second parts, the first part is lay on the second electrode layer and covers the slit, and the second part is lay on the metal pad, through slot is formed penetrating the second part to expose the metal pad. Compared with the related art, additional film layer is formed by vapor deposition, and the piezoelectric unit can vibrate with maximum displacement and lowest restriction, thereby effectively improving SPL and structural reliability, which is suitable for larger acoustic transducers.
An acoustic transducer includes: substrate including first silicon layer, first oxide layer and second silicon layer, back chamber is formed therethrough; second oxide layer on the substrate; piezoelectric unit on the second oxide layer and including first electrode layer, piezoelectric layer and second electrode layer; slit and opening formed in the second electrode layer; metal pad stacked on the first electrode layer at the opening; and additional film layer including first, second and third parts, the first part is in the slit, side wall and bottom wall of the first part form groove, and through slot is formed in the third part to expose metal pad.
A loudspeaker assembly and a handheld device. The loudspeaker assembly comprises at least one loudspeaker driver and at least two output ports (403, 404). The at least one loudspeaker driver and the at least two output ports (403, 404) are configured such that the loudspeaker assembly has a directional polar pattern within a desired frequency range.
A sound reproducing apparatus is disclosed. The sound reproducing apparatus includes a signal processing unit, a first transducer, and a second transducer. The signal processing unit is configured to receive a sound signal and divide the sound signal into a first frequency component and a second frequency component. The first frequency component is at least partially different from the second frequency component, and the signal processing unit includes a delay unit configured to delay the second frequency band component. The first transducer is configured to convert the first frequency component from the signal processing unit into airborne sound. The second transducer is configured to convert the second frequency component from the delay unit into bone conduction sound.
H04R 1/24 - Structural combinations of separate transducers or of parts of the same transducer and responsive respectively to two or more frequency ranges
A loudspeaker assembly and a hand-held device are provided. The loudspeaker assembly includes at least one loudspeaker driver and at least two output ports. The at least one loudspeaker driver and the at least two output ports are configured so that the loudspeaker assembly has a directive polar pattern over a desired frequency range.
H04R 1/24 - Structural combinations of separate transducers or of parts of the same transducer and responsive respectively to two or more frequency ranges
H04R 1/28 - Transducer mountings or enclosures designed for specific frequency responseTransducer enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
H04R 3/12 - Circuits for transducers for distributing signals to two or more loudspeakers
The present invention provides a speaker module for a mobile terminal provided with a sound output port. The speaker module includes a speaker box. The speaker box includes a first sound output opening and a second sound output opening. A speaker module also includes a first horn barrel and a second horn barrel. The first horn barrel and the second horn barrel are arranged asymmetrically with respect to the speaker box. The speaker module in the present invention realizes the multi-order coupling of the resonance peak, which not only improves the high-frequency performance, but also widens the frequency band range, and at the same time, reduces the manufacturing cost.
H04R 1/28 - Transducer mountings or enclosures designed for specific frequency responseTransducer enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
Provided in the present invention is a MEMS microphone, comprising a substrate having a back cavity and a capacitance system arranged on the substrate, wherein the capacitance system comprises a back plate and a diaphragm arranged opposite the back plate; the diaphragm is located between the substrate and the back plate; a reinforcing portion connected to the diaphragm is disposed between the diaphragm and the substrate; a projection of an inner surface of the reinforcing portion in the direction of vibration of the diaphragm is flush with an inner surface of the back cavity or is located in the back cavity; and the reinforcing portion comprises an etch stop wall and a sacrificial layer located in the etch stop wall. Compared with related techniques, the MEMS microphone provided in the present invention can enhance product reliability.
An MEMS optical microphone (100), comprising: a casing (1), the casing (1) comprising an inner cavity (10) and a sound port (14) that connects the inner cavity (10) to the outside; a light source (2), the light source (2) being configured to emit a light beam; an MEMS module (3), the MEMS module (3) comprising: a diaphragm (31), the diaphragm (31) being suspended above the sound port (14), and a first reflective coating (32), the first reflective coating (32) coating the surface of the diaphragm (31) facing the light source (2) and configured to reflect the light beam; and an optical detection unit (4), the optical detection unit (4) being configured to detect light reflected from the first reflective coating (32), and comprising: a photodetector (41), the photodetector (41) being configured to convert the light intensity into a photocurrent, and a light filter (42), the light filter (42) having a variable transmissivity and being lifted above the photodetector (41). The MEMS optical microphone (100) has a wider dynamic range and higher sensitivity.
The invention provides a speaker module for a mobile terminal provided with a sound output port. The speaker module includes a speaker box, and the speaker box includes a sound output opening. The speaker module also includes a horn barrel connected with the sound output opening. The sound output opening includes a first sound output opening and a second sound output opening. Compared with the related art, the present invention can realize multi-level resonance, small size, convenient to widen the frequency band range and easy to adapt to the mobile terminal.
H04R 1/28 - Transducer mountings or enclosures designed for specific frequency responseTransducer enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
The invention provides a speaker module for a mobile terminal with a sound output port. The speaker module includes a speaker box. The speaker box includes a sound output opening for side surface sound. The speaker module also includes a horn barre. The horn barrel has openings arranged at both ends. A sectional area along the sound output direction of the horn barrel changes gradually. By designing a variable sectional surface with different areas or lengths and widths on the horn barrel for stakeout, the size of the variable sectional surface is directly related to the sound quality of each part of the horn barrel. The horn barrel widens the frequency band range. Compared with the related art, the present invention can realize multi-level resonance, has a small volume, is convenient to widen the frequency band range and has flexible avoidance space.
H04R 1/28 - Transducer mountings or enclosures designed for specific frequency responseTransducer enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
H04R 1/30 - Combinations of transducers with horns, e.g. with mechanical matching means
A MEMS microphone, includes a substrate with a back cavity, and a capacitive system arranged on the substrate, the capacitive includes a back plate and a diaphragm, a reinforcing portion is located between the diaphragm and the substrate, a projection of an inner surface of the reinforcing portion along a vibration direction of the diaphragm is flush with an inner surface of the back cavity or located in the back cavity, the reinforcing portion includes an etched barrier wall and a sacrificial layer located within the etched barrier wall. Compared with the related art, the MEMS microphone disclosed by the present disclosure could improve the reliability.
The present application relates to the technical field of optical microphones, and in particular to a microphone chip and a microphone. The microphone chip of the present application comprises: a substrate, which is provided with an inner cavity; a diaphragm, which is supported on the substrate, comprises an inner diaphragm portion and an outer diaphragm portion connected to the inner diaphragm portion, and is supported on the substrate by means of the outer diaphragm portion, the inner diaphragm portion being arranged opposite to the inner cavity; and limiting members, which are supported on the substrate, are located at two opposite sides of the diaphragm in a vibration direction and spaced apart from the diaphragm, and are configured for limiting the amplitude of the inner diaphragm portion. In the present invention, when the inner diaphragm portion moves to a certain stroke, the limiting members can limit continuous movement of the inner diaphragm portion, so as to reduce the risk of damage caused by an overlarge vibration stroke of the diaphragm under relatively high sound pressure.
A MEMS optical microphone includes: a housing including an inner cavity and a sound port communicating the inner cavity with outside, a light source configured to emitting a light beam, a MEMS module including a membrane suspended above the sound port, and a first reflective coating coated on a surface of the membrane facing the light source and configured to reflect the light beam; a light detection unit configured to detecting light reflecting from the first reflective coating, including a photo detector configured to convert light intensity into photo current, and an optical filter with a variable transmittance hoisted above the photo detector. The MEMS optical microphone has wider dynamic range and higher sensitivity.
A microphone chip and a microphone. The microphone chip includes: a base including an inner cavity; a diaphragm including a diaphragm inner part and a diaphragm outer part that are connected to the diaphragm inner part, the diaphragm being supported on the base by means of the diaphragm outer part, and the diaphragm inner part being arranged to be opposite to the inner cavity; and a limiting member supported on the base and located at two opposite sides of the diaphragm along a vibration direction of the diaphragm, the limiting member being spaced apart from the diaphragm, and the limiting member being configured to limit an amplitude of the diaphragm inner part. When the diaphragm inner part moves to a certain displacement, the limiting member can limit further movement of the diaphragm inner part, thereby reducing a damage risk caused by excessive displacement of the diaphragm under high sound pressure.
H04R 1/28 - Transducer mountings or enclosures designed for specific frequency responseTransducer enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
H04R 7/16 - Mounting or tensioning of diaphragms or cones
H04R 7/26 - Damping by means acting directly on free portion of diaphragm or cone
41.
NEURAL NETWORK CONVERSION METHOD, ELECTRONIC DEVICE, AND STORAGE MEDIUM
Provided in the embodiments of the present application are a neural network conversion method, an electronic device, and a storage medium. The method is applied to a terminal device and comprises: initializing a decision tree, and setting a root of the decision tree; with effective filters of a neural network as a decision rule, performing leaf branching starting with the root of the decision tree until the decision tree covers all the effective filters of the neural network, the neural network being a neural network having piecewise linear activation. The method provided by the embodiments of the present application converts the neural network into the decision tree so as to explain the neural network on the basis of the decision tree, thereby solving the black box problem of neural networks.
A method for converting neural network, applied to a terminal device, including: initializing a decision tree, and setting a root of the decision tree; and branching leafs from the root of the decision tree based on effective filters of the neutral network as a decision rule, until all effective filters of the neutral network are covered by the decision tree. The neutral network is a piece-wise linearly activated neutral network. In this method, the neutral network is converted as decision trees and is explained based on the decision trees, so as to solve the black-box problem of the neutral network.
Provided in the present invention is a loudspeaker box, comprising a shell, a sound production unit and a magnetic-circuit coupling valve. The sound production unit comprises a basket, a vibration system and a magnetic circuit system, wherein the magnetic circuit system comprises secondary magnetic steel. The shell comprises a lower cover, wherein the lower cover, the basket and the magnetic circuit system jointly enclose a rear cavity, and the lower cover comprises a plurality of leakage holes; and the magnetic-circuit coupling valve is accommodated in the rear cavity. The magnetic-circuit coupling valve comprises: a support, which is fixed to the basket or a magnetic yoke; a negative-stiffness vibrating diaphragm, which is fixed to the support; and a coil, which is fixed to the side of the negative-stiffness vibrating diaphragm close to the secondary magnetic steel and is spaced apart from the secondary magnetic steel, wherein the negative-stiffness vibrating diaphragm directly faces the leakage holes and are spaced apart from same; and the coil receives an external control signal and generates an electromagnetic field together with the secondary magnetic steel, so as to drive the negative-stiffness vibrating diaphragm to abut against the leakage holes so that the leakage holes are sealed and in a closed state, or drive same to move away from the leakage holes so that the leakage holes are in an open state, or drive same to partially abut against the leakage holes so that the leakage holes are in a partially open and closed state. Compared with the prior art, the loudspeaker box of the present invention can accurately control a communication state between the rear cavity and outside air, and has a good acoustic performance.
The present invention provides a speaker box including a housing, a sound unit and a magnetic circuit coupling valve. The sound unit includes a bracket, a vibration system and a magnetic circuit system including a secondary magnet. The housing includes a bottom cover having leakage holes. The magnetic circuit coupling valve is accommodated in a rear cavity and includes a support, a negative stiffness diaphragm and a coil. The negative stiffness diaphragm faces to the leakage holes. The coil receives an external control signal and generates an electromagnetic field with the secondary magnet to drive the negative stiffness diaphragm to seal the leakage holes, or make the leakage holes open, or make the leakage holes partially open or closed. Compared with a related technology, the speaker box has fine acoustic performance and is able to accurately control communication of a rear cavity with the outside.
H04R 1/28 - Transducer mountings or enclosures designed for specific frequency responseTransducer enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
A loudspeaker module, used for a mobile terminal provided with a sound outlet. The loudspeaker module comprises a loudspeaker box, the loudspeaker box comprising a first sound output opening and a second sound output opening. The loudspeaker module further comprises a first horn and a second horn. One end of the first horn is connected to a side surface of the loudspeaker box and communicated with the first sound output opening, and the other end of the first horn is used for connecting to a sound outlet of a mobile terminal. One end of the second horn is connected to a side face of the loudspeaker box and communicated with the second sound output opening, and the other end of the second horn is used for connecting to the sound outlet of the mobile terminal. The first horn and the second horn are asymmetrically arranged with respect to the loudspeaker box. The loudspeaker module achieves multi-order coupling of resonance peaks, thus not only improving the high-frequency performance, but also expanding the frequency band range, and meanwhile reduces manufacturing costs.
The present invention belongs to the technical field of electroacoustic conversion. Provided in the present invention is a loudspeaker module for use in a mobile terminal having a sound outlet. The loudspeaker module comprises a loudspeaker box comprising a sound output opening for side face sound production, and the loudspeaker module further comprises a horn connected to the sound output opening, wherein the horn is hollow and has two open ends; one end of the horn is connected to a side face of the loudspeaker box and is in communication with the sound output opening, and the other end of the horn is configured for connection to a sound outlet of a mobile terminal; and the cross section area in the sound output direction of the horn is gradually changed. Variable cross sections with different areas or lengths and widths are designed on the horn for lofting, so that the sizes of the variable cross sections are directly associated with the sound quality of each part of the horn, and the horn uses a transmission line network theory to optimize and couple the local impedance of the horn, so that small-volume multi-stage resonance is realized, and the frequency band range is widened. Compared with the prior art, the present invention achieves multi-stage resonance, has a small size, facilitates widening of the frequency band range, and has a flexible avoidance space.
H04R 1/28 - Transducer mountings or enclosures designed for specific frequency responseTransducer enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
The present invention relates to the technical field of electroacoustic conversion, and provides a speaker module, for use in a mobile terminal provided with a sound outlet. The speaker module comprises a speaker box; the speaker box comprises a sound output opening used for side sound production; the speaker module further comprises a horn connected to the sound output opening; the horn is a hollow structure; the sound output opening comprises a first sound output opening formed in a transverse axis direction of the speaker box and a second sound output opening formed in a longitudinal axis direction of the speaker box, wherein the first sound output opening is spaced apart from the second sound output opening; the horn comprises a first section connected to the first sound output opening, a second section bent and extended from the end of the first section distant from the first sound output opening, and a third section; the end of the second section distant from the first section is adapted to be connected to the sound outlet; two ends of the third section are respectively connected to the second sound output opening and the second section. Compared with the prior art, the present invention can achieve multi-stage resonance, has a small size, and is convenient for broadening a frequency band range, and adapting to mobile terminals.
H04R 1/22 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
H04R 1/28 - Transducer mountings or enclosures designed for specific frequency responseTransducer enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
48.
System for protecting mems product under ESD event
The present invention discloses a system for protecting a MEMS product from an ESD event, including, a control circuit; a MEMS product, electrically connected with the control circuit; an ESD protection device, electrically connected with the control circuit, and electrically connected with the MEMS product in parallel; wherein, the ESD protection device comprises: a top electrode assembly electrically connected with the control circuit; a flexible beam comprising a first electrode layer electrically connected with the control circuit, a second electrode layer electrically connected with the MEMS product, and a moving metal contact electrically connected with the second electrode layer; a bottom electrode assembly having a bottom electrode layer electrically connected with the MEMS product and a fixed metal contact electrically connected with the bottom electrode layer and facing the moving metal contact.
The present invention provides an antenna module and a mobile terminal. The antenna module comprises a feed source, a system ground, a first radiator and a second radiator, the first radiator being spaced apart from the second radiator, and the second radiator being connected to the system ground. The first radiator comprises a first radiation part and a second radiation part, which are spaced apart, the first radiation part being located between the second radiation part and the second radiator. The feed source is electrically connected to the first radiation part, and the feed source is used for providing an excitation signal to the first radiation part, so that the first radiator and the second radiator jointly generate a first resonance, a second resonance and a third resonance. The antenna module of the present invention can radiate more frequency bands and is smaller in size.
The present invention provides an antenna module and a mobile terminal. The antenna module comprises a system ground, a first radiator, a second radiator, a third radiator, a first decoupling circuit, and a second decoupling circuit. The first decoupling circuit is electrically connected to the second radiator, the second decoupling circuit is coupled between the first radiator and the second radiator, and/or the second decoupling circuit is coupled between the second radiator and the third radiator. The antenna module of the present invention may transmit a wireless signal in a frequency band ranging from 3300 MHz to 5000 MHz.
Disclosed in the present utility model are a loudspeaker box and a mobile terminal. The loudspeaker box is applied to the mobile terminal. The mobile terminal has an outer shell for accommodating the loudspeaker box. The loudspeaker box comprises a housing having an accommodation space and a loudspeaker unit accommodated in the accommodation space. The housing comprises a bottom shell and a metal top plate covering the bottom shell and defining, with the bottom shell, the accommodation space; the metal top plate comprises a main body covering the end of a sidewall away from a bottom wall, and a connecting member extending outwards from the main body; a positioning portion penetrates through the connecting member; the outer shell extends towards the connecting member to form a hot melting column for supporting and fixing the connecting member; the connecting member is holt molten by the hot melting column and is then fixed to the outer shell. When the loudspeaker box of the present embodiment is assembled with the outer shell, the matching of the positioning portion on the connecting member and the hot melting column on the outer shell can achieve quick positioning, and the connecting member is fixed to the outer shell by means of the hot melting of the hot melting column, such that a stable connection between the loudspeaker box and the mobile terminal, and quick and secure mounting are achieved.
The present invention provides a sound production apparatus. The sound production apparatus comprises a basket, and a vibration system and magnetic circuit system that are fixedly connected on the basket. The vibration system comprises a diaphragm, a voice coil that drives the diaphragm to vibrate, and a flexible circuit board electrically connected to the voice coil. The voice coil comprises a voice coil body disposed in a hollow region, and a voice coil lead connected to the voice coil body. The sound production apparatus is characterized in that the flexible circuit board comprises a main body part that is located on the outer side of the voice coil, and a pad part that extends from the main body part to the hollow region of the voice coil. The projection of the pad part along the vibration direction of the diaphragm is at least partially located in the hollow region, and the voice coil lead is connected to the pad part. A voice coil lead and a pad part do not need to be provided on the outer side of the voice coil, and a space for soldering the voice coil lead and the pad part also does not need to be reserved on the outer side of the voice coil. The dimensions of the voice coil are no longer restricted by a soldering process and a larger voice coil circumference can be achieved, and the sound production performance of the sound production apparatus is improved.
Provided by the present invention is a sound producing apparatus, comprising a basket and a vibration system fixedly connected to the basket; the vibration system comprises a diaphragm and a voice coil driving the diaphragm to vibrate; the diaphragm comprises a dome and a sound film located at the periphery of the dome; the outer edge of the sound film is fixed to the basket; the basket comprises at least two sub-brackets, each sub-bracket is formed by bending a plate N times, and N being an integer greater than zero and less than four; each sub-bracket has two free ends after being bent and formed, and one free end of one of the sub-brackets is fixedly connected to one free end of the other sub-bracket to form a splicing area. The present invention can improve the stability of a basket in a sound producing apparatus.
Provided is a micro speaker, comprising: a basket; and a vibration system and a magnetic circuit system respectively received in the basket. The magnetic circuit system is used to drive the vibration system to vibrate and generate sound. The magnetic circuit system has a magnetic gap. The vibration system comprises a first diaphragm fixed to the basket and a voice coil inserted into the magnetic gap and used to drive the first diaphragm to vibrate. The basket comprises multiple side walls arranged at intervals and a fixing portion connecting two adjacent side walls. The thickness of the fixing portion is greater than the thickness of the side wall. The fixing portion of the basket in the micro speaker has increased thickness, thereby increasing fixing areas thereof at which other elements can be fixed. Accordingly, the micro speaker has a stable structure, and a product has a small size and meets the requirement of compactness.
Provided is a sound generation device, comprising a cone frame, a vibration system and a magnetic circuit system. The vibration system comprises a vibration diaphragm, a voice coil for driving the vibration diaphragm to vibrate, and a framework, wherein the framework comprises a framework body fixed on the vibration diaphragm, and a first connecting part formed by means of extending from the framework body; the voice coil comprises a pair of first side edges and a pair of second side edges, damping members are arranged on the first side edges, and a pair of damping members are respectively a symmetrical plate and a flexible circuit board electrically connected to the voice coil; and each damping member comprises a holding part fixed on the cone frame, a combining part fixed on the first connecting part, and two elastic arms for connecting the holding part to the combining part, wherein a gap is formed between the two elastic arms, the combining part bulges towards the gap to form a convex edge, the first connecting part bulges in the direction away from the voice coil to form a bulge, and the convex edge is fixed on the bulge. The sound generation device provided in the present invention can fully utilize the space of the non-force arm area of each damping member.
Provided by the present utility model is a sound generating device, which comprises a basket, as well as a vibration system and a magnetic circuit system that drives the vibration system to vibrate and generate sound, the two systems being separately fixed on the basket. The vibration system comprises a diaphragm fixed on the basket and a voice coil for driving the diaphragm to vibrate. The magnetic circuit system comprises a magnetic bowl and a magnetic steel assembly that is accommodated and fixed in the magnetic bowl and is spaced apart from the magnetic bowl to form a magnetic gap. The voice coil is inserted in the magnetic gap. The magnetic bowl comprises a magnetic bowl bottom wall, a ring-shaped magnetic bowl side wall that bends and extends from the periphery of the magnetic bowl bottom wall to the direction close to the diaphragm, and a flange that bends and extends from the end of the magnetic bowl side wall close to the diaphragm to the direction close to the basket. The magnetic steel assembly is fixed on the magnetic bowl bottom wall, and is spaced apart from the magnetic bowl side wall to form a magnetic gap. The end of the flange away from the magnetic bowl side wall is fixed on the basket. Compared to the related art, the sound generating device in the present utility model has better reliability.
The present utility model provides a sound-producing device, comprising a positioning support, a vibration system and a magnetic circuit system; the vibration system comprises a diaphragm and a voice coil, the magnetic circuit system comprises a magnetic bowl fixed to the positioning support and a magnetic steel accommodated in the magnetic bowl, wherein the magnetic bowl comprises a magnetic bowl body and a magnetic bowl side wall which extends, in a bending manner, in the direction from the periphery of the magnetic bowl body to the diaphragm, the magnetic steel is fixed to the magnetic bowl body; and the positioning support comprises a positioning support body and a positioning groove which is formed in the direction from the side of the positioning support body close to the magnetic bowl recessing to the diaphragm; and the magnetic bowl further comprises a magnetic bowl extension portion which extends, in a bending manner, in the direction from the magnetic bowl side wall to the positioning support and is accommodated in the positioning groove, the side of the magnetic bowl extension portion close to the diaphragm abuts against the bottom face of the positioning groove, and the end of the magnetic bowl extension portion away from the magnetic bowl side wall is fixed to the positioning support. Compared with the related art, the sound-producing device of the present utility model has a simple structure, a large strength, is easy to assemble and position, and has high reliability.
Provided is a sound production device, comprising: a basket; and a vibration system and a magnetic circuit system fixed to the basket. The vibration system comprises a diaphragm, a skeleton connected to the diaphragm, and a voice coil and an elastic conductive member connected to the skeleton. The elastic conductive member comprises an elastic conductive member body connected to the basket and the skeleton, a connection arm bent toward the voice coil from the elastic conductive member body, and a solder pad portion connected to the connection arm. The connection arm comprises a first connection portion extending toward the voice coil from the elastic conductive member body, a first bent portion bent toward the diaphragm from the first connection portion, a second connection portion extending toward the diaphragm from the first bent portion, a second bent portion bent toward the voice coil from the second connection portion, and a third connection portion extending toward the voice coil from the second bent portion. A cover film is attached to each of an inner surface and an outer surface of the connection arm. Portions of the cover films are removed from inner side surfaces and/or outer side surfaces of the first bent portion and the second bent portion. Removing certain portions of the cover films reduces stress on inner and outer surfaces of a bent region, thereby ensuring a stable bent angle, reducing rebounding, and ensuring that the position of a solder pad is precise.
The present invention provides a sound production device. The sound production device comprises a basket, a vibration system and a magnetic circuit system having a magnetic gap, the vibration system and the magnetic circuit system being separately fixed to the basket. The vibration system comprises a vibrating diaphragm fixed to the basket and a voice coil inserted in the magnetic gap and for driving the vibrating diaphragm to vibrate, thereby producing a sound. The vibrating diaphragm protrudes towards the magnetic circuit system to form a voice coil fixing part, and the voice coil is fixed to the side of the voice coil fixing part facing the magnetic circuit system. The sound production device provided by the present invention not only eliminates the risk of poor bonding between the frame and the vibrating diaphragm, but also reduces assembling processes.
The present invention provides a sound production device, comprising a basket, and a vibration system and a magnetic circuit system that are separately fixed to the basket. The magnetic circuit system is provided with a magnetic gap; the vibration system comprises a vibration diaphragm fixed to the basket, a voice coil inserted in the magnetic gap to drive the vibration diaphragm to vibrate, and an elastic electrically conductive member fixed to the basket; the vibration diaphragm comprises a vibration part, a surround part extending from the vibration part and surrounding the vibration part, a fixing part connected to the surround part, and an extension part bent and extending from the fixing part to the magnetic circuit system; the extension part comprises a pair of long shaft parts and a pair of short shaft parts which are oppositely provided, first corner parts which are connected to the adjacent long shaft parts and short shaft parts, and second corner parts which are provided at intervals on the inner side of the first corner parts; the basket is sandwiched between the first corner parts and the second corner parts; and the elastic electrically conductive member is fixedly connected to the first corner parts, the second corner parts, and the basket. The basket of the sound production device can effectively support the elastic electrically conductive member, such that the elastic electrically conductive member is not easy to deform, and the performance of the sound production device is improved.
Provided is a loudspeaker, comprising a cone frame, a vibrating system fixed to the cone frame, and a magnetic circuit system driving the vibrating system to vibrate, wherein the magnetic circuit system has a magnetic gap; the vibrating system comprises an upper sound diaphragm, a framework connected to the upper sound diaphragm, and a lower sound diaphragm elastically supporting the framework; the upper sound diaphragm comprises a dome portion, and a corrugated ring portion arranged surrounding the dome portion; the dome portion comprises a body portion, and an avoidance slot formed in such a manner that same is recessed away from two opposite sides of the body portion; an avoidance gap is formed between the avoidance slot and the corrugated ring portion; the framework comprises a main body portion, and a boss formed in such a manner that same extends from the main body portion in the direction approaching the upper sound diaphragm; and the boss is arranged in the avoidance gap. The loudspeaker provided in the present invention is conducive to improving the structural strength for vibrations, so as to reduce the deformation of the framework during a vibration process, and is conducive to improving the symmetry of the vibrating system, so as to reduce vibration swinging.
Provided is a sound production device. The sound production device comprises a cone frame, and a vibrating system and a magnetic circuit system, which are respectively fixed to the cone frame, wherein the vibrating system comprises a vibrating diaphragm fixed to the cone frame, and a voice coil driving the vibrating diaphragm to vibrate for sound production; the voice coil comprises a pair of first side edges, and a pair of second side edges connected between the first side edges; the magnetic circuit system comprises a magnetic yoke, a primary magnet fixed on the magnetic yoke, and a secondary magnet arranged surrounding the primary magnet, a magnetic gap being formed between the secondary magnet and the primary magnet; the secondary magnet comprises a first secondary magnet arranged opposite and spaced apart from the first side edges; the first secondary magnet comprises a main body portion, and an extension portion formed in such a manner that same extends from the side of the main body portion that is away from the first side edges; the side face of the main body portion that faces the first side edges is recessed to form a recess; and both the primary magnet and the first side edges protrude outwards in the direction of the recess. By means of the sound production device provided in the present invention, not only can a secondary magnet surround a voice coil more uniformly, but the perimeter of the voice coil is longer when the magnetic circuit area is the same, such that a BL value can be increased.
The present invention provides a sound production device, comprising a basket, a vibration system accommodated in the basket, a magnetic circuit system fixed to the basket and having a magnetic gap, and a front cover. The vibration system comprises a vibrating diaphragm and a voice coil inserted into the magnetic gap to drive the vibrating diaphragm to vibrate, thereby producing a sound. The vibrating diaphragm is sandwiched between the basket and the front cover; the front cover is provided with a welding part; the orthographic projection of the vibrating diaphragm on the front cover along a vibrating direction of the vibrating diaphragm does not overlap with the welding part; the basket is made of a metal material; the welding part and the basket are fixed by means of laser welding. The front cover of the sound production device provided by the present invention is not easy to fall off.
The present invention provides a sound production device, comprising a basket, and a vibration system and a magnetic circuit system having a magnetic gap, the vibration system and the magnetic circuit system being separately fixed to the basket. The vibration system comprises a diaphragm fixedly provided on the basket and a voice coil assembly for driving the diaphragm to vibrate, thereby producing a sound. The voice coil assembly comprises a voice coil inserted into the magnetic gap, and a frame fixedly connected to the voice coil and the diaphragm. The frame comprises a first connecting portion surrounding the magnetic circuit system and fixedly connected to the diaphragm, a plurality of bonding portions formed by extending from the first connecting portion, and a second connecting portion formed by extending from the bonding portion and connected to the voice coil, and further comprises a corrugated ring formed by bending and extending from one end of the second connecting portion distant from the bonding portion and fixedly to the voice coil. The corrugated ring and the second connecting portion enclose to form an accommodation space. The voice coil passes through the accommodation space. The sound production device provided by the present invention can increase the gluing area between the voice coil and the frame, and thus the risk that the voice coil is separated from the frame can be reduced.
Provided in the present utility model is a sound-producing component, which comprises a positioning support frame and, respectively fixed on the positioning support frame, a vibration system and a magnetic circuit system driving the vibration system to vibrate and produce sound. The vibration system comprises, fixed to the positioning support frame, a diaphragm and a voice coil driving the diaphragm to vibrate. The magnetic circuit system comprises a magnetic yoke, a primary magnetic steel component fixedly provided on the magnetic yoke, and secondary magnetic steel components provided at two opposite sides of the primary magnetic steel component. The magnetic yoke comprises a magnetic yoke body, magnetic yoke extended walls provided as extending from two opposite sides of the magnetic yoke body, and magnetic yoke sidewalls bending and extending towards the diaphragm from other two opposite sides of the magnetic yoke. The secondary magnetic steel components are fixedly provided on the magnetic yoke extended walls. The primary magnetic steel component is spaced apart in sequence from the secondary magnetic steel components and the magnetic yoke sidewalls to form a magnetic gap. The positioning support frame is made of a metal material. The secondary magnetic steel components are laser spot welded on the side away from the magnetic yoke to the positioning support frame. Compared with the prior art, the sound-producing component of the present utility model has better reliability.
The present invention provides a sound production device, comprising a frame, a vibration system, and a magnetic circuit system. The magnetic circuit system is provided with a magnetic gap; the vibration system comprises a diaphragm fixed to the frame, a framework connected to the diaphragm, a voice coil fixed to the framework, and an elastic conductive member fixed to the frame; the voice coil is provided with a lead; the elastic conductive member comprises an elastic conductive member body fixed to the frame, a first connecting member and a second connecting member respectively extending toward each other from the elastic conductive member body, a first bending arm and a second bending arm respectively bending and extending from the first connecting member and the second connecting member along the framework, and a first bonding pad and a second bonding pad respectively extending away from each other from the first bending arm and the second bending arm; the lead is electrically connected to the first bonding pad and the second bonding pad; the first bonding pad and the second bonding pad are arranged on the two sides of the framework; the first bending arm and the second bending arm are arranged at intervals; a middle section can be used for increasing the volume of a first auxiliary magnetic steel; and the acoustic performance of the sound production device is improved.
The present invention provides a sound production apparatus, comprising a framework and a first flexible circuit board. The first flexible circuit board is provided on the framework; the first flexible circuit board comprises a pad; the framework comprises a first side portion and a second side portion that are arranged opposite to each other; the pad is provided on the first side portion; and the second side portion is provided with a lamination. The sound production apparatus of the present invention can optimize the mass balance of the framework in a vibration process, thereby reducing the sway of the framework in the vibration process, and improving the sound production effect of the sound production apparatus.
The present invention provides a sound production device, comprising a basket, a vibration system, and a magnetic circuit system. The magnetic circuit system is provided with a magnetic gap. The vibration system comprises a diaphragm fixed to the basket, a voice coil inserted into the magnetic gap to drive the diaphragm to vibrate, a frame connected to the diaphragm, and an elastic conductive member fixed to the basket and connected to the side of the frame distant from the diaphragm. A lead is provided on one end of the voice coil. The frame and the voice coil together enclose an accommodation space. The elastic conductive member comprises an elastic conductive member body fixed to the basket, a first connecting member and a second connecting member which respectively bend and extend from the elastic conductive member body towards each other, a first bending arm which bends and extends from the first connecting member to the accommodation space along the frame, a second bending arm which bends and extends from the second connecting member to the accommodation space along the frame, and a third connecting member which connects the first bending arm to the second bending arm. The first bending arm and the second bending arm are arranged at intervals. The lead is fixed and electrically connected to the third connecting member.
Provided is a sound production device, comprising a cone frame, a vibrating system and a magnetic circuit system, wherein the vibrating system comprises a vibrating diaphragm and a voice coil; the magnetic circuit system comprises a magnetic bowl and magnetic steel; the magnetic bowl comprises a magnetic bowl body, and a magnetic bowl side wall, which is bent and extends from the periphery of the magnetic bowl body in the direction of the vibrating diaphragm; the magnetic steel is fixed to the magnetic bowl body and is spaced apart from the magnetic bowl side wall; the magnetic bowl side wall is fixed to the cone frame; the cone frame comprises an annular cone frame body, a cone frame fixing portion extending from the cone frame body in the direction of the magnetic bowl side wall, and a cone frame positioning portion formed in such a manner that same protrudes from the cone frame fixing portion in a direction away from the cone frame body; a magnetic bowl slot is formed in such a manner that the side of the magnetic bowl side wall that is away from the magnetic bowl body is recessed in the direction of the magnetic bowl body, and the magnetic bowl slot matches the cone frame positioning portion; and the cone frame positioning portion is inserted into the magnetic bowl slot, and a fixed connection is formed between the cone frame fixing portion and the magnetic bowl side wall. Compared with the related art, the sound production device has a simple structure and great strength, can be easily assembled and positioned, and has a high reliability.
The present application provides a sound production device, comprising a frame, a vibration system, and a magnetic circuit system for driving the vibration system to vibrate to produce a sound, wherein the vibration system and the magnetic circuit system are respectively fixed on the frame. The vibration system comprises a diaphragm fixed on the frame, and a voice coil that drives the diaphragm to vibrate, and the magnetic circuit system comprises a magnetic bowl, and a magnetic steel component that is accommodated and fixed in the magnetic bowl and is spaced apart from the magnetic bowl to form a magnetic gap therebetween, wherein the voice coil is inserted in the magnetic gap, and the magnetic bowl comprises a magnetic bowl bottom wall, a magnetic bowl side wall and a flange. The flange comprises a first section that is formed by the end of the magnetic bowl side wall close to the diaphragm bending and extending towards the frame, and a second section that extends from the first section, wherein the distance between the side of the first section close to the diaphragm and the diaphragm is smaller than the distance between the side of the second section close to the diaphragm and the diaphragm; and the side of the first section close to the second section and the second section define a fixed step, and the second section is fixed to the frame. Compared with the related art, the sound production device of the present application has better reliability.
Provided is a sound production device, comprising a cone frame, a vibrating system and a magnetic circuit system, wherein the vibrating system comprises a vibrating diaphragm and a voice coil; the magnetic circuit system comprises a magnetic bowl and magnetic steel; the magnetic bowl comprises a magnetic bowl body, a magnetic bowl side wall, and a magnetic bowl extension portion formed in such a manner that same protrudes from the magnetic bowl side wall in the direction approaching the cone frame; the magnetic steel is fixed to the magnetic bowl body, and is arranged spaced apart from the magnetic bowl side wall to form a magnetic gap; the voice coil is inserted into the magnetic gap; the magnetic bowl side wall is fixed to the cone frame; the cone frame comprises an annular cone frame body, and a cone frame fixing portion extending from the cone frame body in the direction of the magnetic bowl side wall; and the cone frame fixing portion abuts against both the magnetic bowl side wall and the side of the magnetic bowl extension portion that is close to the vibrating diaphragm, and a fixed connection is formed between the cone frame fixing portion and the magnetic bowl extension portion. Compared with the related art, the sound production device of the present utility model has a simple structure and great strength, can be easily assembled and positioned, and has a high reliability.
Provided is a sound production device, comprising: a basket; and a vibration system and a magnetic circuit system respectively fixedly held at the basket. The vibration system comprises a diaphragm fixedly held at the basket, a voice coil used to drive the diaphragm to vibrate and generate sound, and a skeleton. The skeleton comprises an annular skeleton main body fixed to the diaphragm, a first connection portion extending from the outer periphery of the skeleton main body in a direction away from the diaphragm, and a second connection portion extending from the inner periphery of the skeleton main body in the direction away from the diaphragm. The voice coil is fixed to the second connection portion. The voice coil comprises a pair of first sides and a pair of second sides connected between the first sides. Each first side is provided with an elastic supporting member. One end of the elastic supporting member is fixed to the basket, and the other end of the elastic supporting member is fixed to the first connection portion. The skeleton main body is provided with a hollow area. The present invention can effectively reduce the weight of a vibration system in a sound production device, thereby improving the sensitivity of the sound production device.
Provided is a sound production device. The sound production device comprises a cone frame, and a vibrating system and a magnetic circuit system having a magnetic gap, which are respectively fixed to the cone frame, wherein the vibrating system comprises a vibrating diaphragm fixed to the cone frame, a voice coil inserted into the magnetic gap to drive the vibrating diaphragm to vibrate for sound production, and a framework fixedly arranged on the side of the vibrating diaphragm that faces the magnetic circuit system; the vibrating diaphragm comprises a diaphragm body fixed to the cone frame and having a cut center hole, and a dome arranged in the cut center hole; the dome is spaced apart from the diaphragm body; the diaphragm body and the dome are respectively bonded and fixed to the framework; the framework, the diaphragm body and the dome create an enclosure to form an adhesive dispensing recess; and the adhesive dispensing recess is filled with an adhesive. By means of the sound production device provided in the present invention, the sealed and waterproof design between a framework and a vibrating diaphragm can be realized, even though the bonding strength between a diaphragm body and the framework and that between the framework and a dome only reach the assembly strength.
A steering wheel, comprising a steering wheel body (10), flexible support members (20), vibrator members (30) and a vibration devices (40). The steering wheel body (10) is movably connected to a vehicle, and the steering wheel body (10) has an accommodation space. Flexible support members (20) are accommodated and mounted inside the accommodation space. The vibrator members (30) are connected to the flexible support members (20), and are suspended by the flexible support members (20) and supported on the steering wheel body (10). The vibration devices (40) are connected to the vibrator members (30) and drives the vibrator members (30) to vibrate. Also disclosed are a steering wheel vibration alert system and the vehicle. When in use, the vibration devices of the steering wheel cooperates with a sensor device, and the vibration devices vibrate according to an output signal of the sensor device so as to drive the vibrator members to correspondingly vibrate. When a driver holds the steering wheel, touch feedback will be generated to alert or warn the driver, which may thus help the driver to eliminate hidden driving safety risks and to shorten the response time so as to improve driving safety.
The present application provides a loudspeaker box, comprising a housing, a sound producing unit mounted in the housing, and a covering assembly fixedly arranged outside the housing; the housing is provided with an accommodating cavity and a through-hole, the sound producing unit is fixedly arranged in the accommodating cavity and divides the accommodating cavity into a front cavity and a rear cavity, the through-hole is in communication with the rear cavity, and the covering assembly is mounted at the through-hole; the covering assembly comprises an air-permeable separator and a cover plate, the air-permeable separator covers the through-hole and is fixed on the cover plate, the cover plate is connected to the housing and is arranged on the side of the air-permeable separator away from the through-hole, the cover plate is provided with a cover hole, air in the rear cavity flows through the through-hole, the air-permeable separator and the cover hole in sequence to the outside of the housing. The loudspeaker box provided in the present application not only can balance the air pressure between the rear cavity and the front cavity, but also can be filled with sound absorbing particles, and has a simple structure, a simple manufacturing process and a low manufacturing cost.
The present invention provides a sound production device. The sound production device comprises a basket, and a vibration system, a magnetic circuit system having a magnetic gap, and a front cover that are separately fixed to the basket. The vibration system comprises a vibration diaphragm and a voice coil inserted into the magnetic gap to drive the vibration diaphragm to vibrate to produce sound; the vibration diaphragm and the front cover define a sound cavity; a sound outlet communicated with the sound cavity is formed on the front cover; the basket comprises an upper surface facing the front cover, a lower surface provided opposite to the upper surface, and an inner surface and an outer surface for connecting the upper surface and the lower surface; the inner surface is closer to the voice coil than the outer surface; the basket is a metal ring; the outer surface has a welding area; the front cover is a metal cover; the front cover is bent and extends from the periphery thereof to form a welding portion provided opposite to the welding area; the welding portion is welded to the welding area. According to the sound production device provided in the present invention, the risk of detachment of a front cover or/and a vibration diaphragm can be reduced.
Provided is a sound production device. The sound production device comprises a frame, a vibrating system and a magnetic circuit system. The vibrating system comprises a vibrating diaphragm, a voice coil and a framework. The framework comprises a framework main body and first connecting portions. The voice coil comprises a pair of first side edges and a pair of second side edges, wherein the first side edges are provided with elastic supporting members, which are fixed to the frame and fixed to the first connecting portions; and the elastic supporting members and the first side edges enclose and form an accommodating space. The magnetic circuit system comprises a main magnet and an auxiliary magnet, wherein the auxiliary magnet comprises first magnetic portions, which are arranged spaced apart from the first side edges and are positioned in the accommodating space. Each elastic supporting member comprises an auxiliary vibrating diaphragm, wherein the auxiliary vibrating diaphragm is provided with an avoidance recess. Each first magnetic portion comprises a main body portion and an extension portion, which extends, into the avoidance recess, from the side of the main body portion away from the first side edge. Each first connecting portion is provided with a notch for avoiding the extension portion. By means of the sound production device provided by the present invention, the volume of the magnetic circuit system can be increased to increase a BL value, and the weight of the vibrating system can also be effectively reduced to facilitate an improvement in the sensitivity.
The present invention relates to the field of semiconductor technology and provides a method for forming an MEMS cavity structure, which can improve process yield for MEMS integration and encapsulation for functional stability and reliability of the MEMS structure. The method includes steps of: forming an adhesion material layer on a bottom layer; forming a bottom layer on a substrate; forming a adhesion material layer on the bottom layer; forming a support structure and a sacrificial layer that is filled in a space surrounded by the support structure on the adhesion material layer; forming a capping layer on the support structure and the sacrificial layer, and the bottom layer, the support structure and the capping layer together defining a cavity; and releasing the sacrificial layer and the adhesion material layer to form the cavity structure.
The present application provides a lifting/lowering and rotating mechanism and a portable electronic device. The lifting/lowering and rotating mechanism comprises: a housing, a lead screw, a transmission sleeve, a rotating sleeve, a movable nut, and a first elastic element. The lead screw is provided in an accommodation cavity of the housing; a driving assembly drives the lead screw to rotate, and the transmission sleeve is fitted over the lead screw and an inner wall of the transmission sleeve is threadedly connected to the lead screw; the rotating sleeve is fitted over the transmission sleeve and is rotatably provided in the accommodation cavity; a sliding part provided on the transmission sleeve can axially slide with respect to a guiding part provided on the rotating sleeve and transmit torque; the rotating sleeve or the transmission sleeve is provided with a limiting part; the movable nut is fitted over the rotating sleeve; the periphery of the rotating sleeve is threadedly connected to the movable nut; the housing is further provided with a limiting structure for limiting axial movement of the end of the movable nut away from a lens assembly; and the first elastic element has one end abutting against the end of the movable nut close to the lens assembly, and the other end abutting against the accommodation cavity.
A speaker and an electronic terminal, comprising a basket provided with an accommodating space, a vibration system fixed on the basket, a magnetic circuit system used for driving the vibration system, and a flexible circuit board used for electrically connecting with the vibration system. The basket comprises a first steel ring and a second steel ring, the first steel ring and the second steel ring enclosing the accommodating space, and the first steel ring and the second steel ring being at least partially overlappingly arranged and forming a welding portion used for welding with the flexible circuit board. Thus, the area of the welding surface on the welding portion formed is therefore larger than the area of a single steel ring in contact with the flexible circuit board, and thus the area that can be welded to the flexible circuit board is increased. Therefore, the flexible circuit board can be stably welded on the first steel ring and the second steel ring and the rate of dry joints is greatly reduced, thus causing the sound quality of the loudspeaker to be more stable.
A combination switch, comprising: a swingable handle (100), a base (400) spaced apart from and opposite to a bottom surface (110) of the handle (100), and an elastic assembly (200) and sensor (300) provided between the bottom surface (110) of the handle (100) and the base (400). Both the bottom surface (110) of the handle (100) and the base (400) are connected to the elastic component (200); the elastic component (200) is used for allowing the handle (100) to swing and for resetting the handle (100); and the sensor (300) is used for sensing and feeding back the swing angle and displacement of the handle (100). The combination switch achieves switch control by means of the cooperation of the elastic component (200) and the sensor (300), and the entire operation process is smooth.
B60R 16/02 - Electric or fluid circuits specially adapted for vehicles and not otherwise provided forArrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric
H01H 25/06 - Operating part movable both angularly and rectilinearly, the rectilinear movement being along the axis of angular movement
The present application provides a loudspeaker box. The loudspeaker box comprises a housing with an accommodating space and a sound production unit accommodated in the accommodating space and dividing the accommodating space into a front cavity and a rear cavity, wherein the housing is provided with a sound output hole in communication with the front cavity and the outside of the loudspeaker box; the loudspeaker box further comprises a flexible circuit board accommodated in the rear cavity; the housing is provided with a through hole in communication with the rear cavity; the flexible circuit board comprises a first conduction portion electrically connected to the sound production unit, a second conduction portion externally arranged on the accommodating space, and a connecting portion connected between the first conduction portion and the second conduction portion; the connecting portion is at least partially attached to an inner wall surface of the housing and seals the through hole; and the connecting portion is provided in a penetrated manner with an air release hole in communication with the rear cavity and the through hole. The technical problems of the high assembly cost and the very difficult process of providing an air release hole in a loudspeaker in the prior art are thus solved.
A speaker and an electronic terminal, comprising a basket provided with an accommodating space, a vibration system fixed on the basked, a magnetic circuit used to drive the vibration system, and a flexible circuit board used for electrical connection with the vibration system. The basket comprises a steel ring that forms an accommodating space and a plurality of welding plates fixed on the steel ring. The welding plates extend at least partially towards the accommodating space and/or the welding plates extend at least partially away from the accommodating space, and the flexible circuit board is welded to the welding plates. Because the welding plates extend at least partially toward the accommodating space and/or the welding plates extend at least partially away from the accommodating space and the flexible circuit board is welded to the welding plates, the area where the welding plates can be welded to the flexible circuit board is therefore greater than the area of a single steel ring in contact with the flexible circuit board. Thus, the flexible circuit board can be stably welded on the welding plate and the rate of dry joints is greatly reduced, causing the sound quality of the loudspeaker to be more stable.
A speaker and an electronic terminal, comprising a basket provided with an accommodating space, a vibration system fixed on the basket, a magnetic circuit system used for driving the vibration system, and a flexible circuit board used for electrically connecting with the vibration system. The basket comprises a steel ring that encloses the accommodating space and the steel ring is at least partially bent to form a bending portion, the bending portion being at least partially overlappingly arranged and forming a welding portion used for welding with the flexible circuit board. In the present embodiment, the steel ring is at least partially bent to form a bending portion, the bending portion being at least partially overlappingly arranged and forming a welding portion used for welding with the flexible circuit board. Because the welding portion is formed by the at least partial overlapping of the bending portion, the area of the welding surface of the welding portion is therefore larger than the area of a single steel ring in contact with the flexible circuit board, and thus the area that can be welded to the flexible circuit board is increased. Therefore, the flexible circuit board can be stably welded on the steel ring and the rate of dry joints is greatly reduced, thus causing the sound quality of the loudspeaker to be more stable.
Provided are an electrical interconnection structure, an electronic apparatus and manufacturing methods therefor, which can provide a reliable electrical interconnection structure between the MEMS apparatus and an external circuit while sealing and encapsulating the MEMS device. The electrical interconnection structure includes: a bonding metal; a first dielectric layer and a second dielectric layer. The first dielectric layer includes a first through hole penetrating the first dielectric layer and exposing the bonding metal. The first through hole is filled with a first conductive material electrically connected to the bonding metal. The second dielectric layer includes a second through hole. An orthographic projection of second conductive material in the second through hole covers an orthographic projection of first conductive material in the first through hole onto the plane of the base. The second through hole is filled with a second conductive material electrically connected to the first conductive material.
A MEMS switch includes: a housing, a switching assembly; a first actuation electrode, a first contact, a second contact, and a second actuation electrode. The switching device has a stress gradient along the thickness direction, such that in response to applying no voltage between the first actuation electrode and the second actuation electrode, the switching assembly contacts with the first contact. In response to applying a first voltage between the third actuation electrode and the fourth actuation electrode, the switching assembly is driven to deflect such that the switching assembly is spaced apart from both the first contact and the second contact. In response to applying a second voltage between the third actuation electrode and the fourth actuation electrode, the switching assembly is driven to deflect such that the switching assembly contacts with the second contact. The first voltage is smaller than the third voltage.
The present utility model provides a sound production unit and a loudspeaker. The sound production unit comprises a basket, a magnetic circuit system, and a vibration system; the basket has an accommodating space; the magnetic circuit system is provided in the accommodating space; a magnetic gap is formed in the magnetic circuit system; the vibration system comprises a voice diaphragm, a voice coil, and a first frame; the voice diaphragm is fixed to the basket; the first frame comprises a body and at least two support arms provided on the body; the body surrounds the periphery of the voice coil; the support arms are bent from the body toward the inner side and extend into the magnetic gap; the side of the body away from the support arms is fixed to the voice diaphragm; the voice coil is fixed to the support arms and suspended in the magnetic gap by means of the support arms; the first frame further comprises a protrusion protrudingly provided on the body or/and the support arms. The protrusion is provided on the first frame, thereby improving the structural strength of the first frame and reducing the torsional deformation generated in the vibration process of the first frame, and thus improving the high-frequency sensitivity of the sound production unit.
The present application relates to the technical field of electronic devices, and provided therein is an electronic device. The electronic device comprises: a housing provided with an accommodating space and a speaker module that is accommodated in the accommodating space. The speaker module comprises a casing provided with a cavity and a sound generating unit that is accommodated within the cavity, the sound generating unit separates the cavity into a front cavity and a rear cavity, a sound hole and a through hole are provided on the casing, and the sound hole and the through hole are provided at an interval. The sound hole communicates with the front cavity, and the accommodating space communicates with the rear cavity by means of the through hole. The electronic device communicates the rear cavity of the speaker module with the accommodating space provided in the housing of the electronic device by providing a through hole on the casing of the speaker module, thereby improving the low-frequency amplitude of the speaker module and improving low-frequency performance of the electronic device at rated power. In addition, a through hole is only provided on the casing of the electronic device, and fabrication costs are increased by a relatively small amount while improving performance.
Provided is a loudspeaker box, comprising a bottom shell assembly and a loudspeaker unit. The bottom shell assembly is provided with an accommodating cavity, and the loudspeaker unit is at least partially accommodated in the accommodating cavity; and the bottom shell assembly comprises a metal bottom shell and a protective film, the metal bottom shell is provided with an accommodating cavity, and the protective film is attached to an outer side face of the metal bottom shell. In the loudspeaker box provided in the present application, the protective film is attached to the outer side face of the metal bottom shell, such that in a subsequent assembly process of the metal bottom shell, the protective film can effectively prevent the outer surface of the metal bottom shell from being scratched.
Provided in the utility model is a smart watch, comprising a watchband, a watch body with a loudspeaker unit, and a loudspeaker box. The watch body is connected to the watchband; and the watch body is provided with a first sound outlet, and the loudspeaker unit can radiate sound outwards by means of the first sound outlet. The loudspeaker box is connected to the watchband; and the loudspeaker box comprises a bonding wire, a housing with an accommodating space and a sound generation single body accommodated in the accommodating space, wherein the housing is provided with a second sound outlet, and the sound generation single body can radiate sound outwards by means of the second sound outlet. The sound generation single body is electrically connected to an internal circuit of the watch body by means of the bonding wire and is connected to the same signal source as the loudspeaker unit. Thus, the loudspeaker unit of the watch body and the loudspeaker box externally connected to the watchband have the same sound source, such that a stereo effect can be achieved, thereby improving the definition and the intelligibility of sound playing.
Provided is a smartwatch, comprising a watch band (10), a watch body (20) having a speaker unit (21), and a speaker enclosure (30). The watch body (20) has a first sound outlet (2221), and the speaker unit (21) is capable of radiating sound outward by means of the first sound outlet (2221). The speaker enclosure (30) is attached to the watch band (10); the speaker enclosure (30) comprises an outer housing (31) having an accommodating space and a sound-generating unit (32) accommodated in the accommodating space, the outer housing (31) being provided with a second sound outlet (311), the sound-emitting unit (32) being capable of radiating sound outward by means of the second outlet (311). The sound-emitting unit (32) is electrically connected to an internal circuit of the watch body (20), and is connected to the same signal source as the speaker unit (21). Thus the speaker unit (21) of the watch body (20) and the speaker enclosure (30) externally connected to the watch band can be the same sound source, enabling a stereo sound effect, improving the clarity and intelligibility of sound playback.
A smartwatch, comprising a watchband (10), a watch body (20) with a loudspeaker unit (21), and a loudspeaker box (30). The watch body (20) is connected to the watchband (10). A sound outlet (2221) is formed on the watch body (20), and the loudspeaker unit (21) can radiate sound outward by means of the sound outlet (2221). The loudspeaker box (30) is connected to the watchband (10). The loudspeaker box (30) comprises a flexible circuit board (33), a housing (31) having an accommodating space, and a sound production unit (32) accommodated in the accommodating space. A second sound outlet (311) is formed on the housing (31), and the sound production unit (32) can radiate sound outward by means of the second sound outlet (311). The sound production unit (32) is electrically connected to an internal circuit of the watch body (20) by means of the flexible circuit board (33). In this way, the loudspeaker unit (21) of the watch body (20) and the loudspeaker box (30) externally connected onto the watchband (10) play the same sound source, such that a stereo effect can be achieved, thereby improving the clarity and intelligibility of sound playback.
Provided is a vibration motor, comprising a housing (10) and a stator (20) and oscillator (30) and flexible member (41) accommodated in the housing (10); the oscillator (30) comprises a counterweight block (33) fixedly connected to the flexible member (41) and having a mounting cavity (33a) and a magnetic circuit structure (31) accommodated in the mounting cavity (33a), the counterweight block (33) comprising an inner wall (331) arranged surroundingly to form a mounting cavity (33a); the magnetic circuit structure (31) is fixed to the inner wall (331); the stator (20) is at least partially accommodated in the mounting cavity (33a) and arranged spaced from the inner wall (331); the stator (20) comprises an iron core (21) fixed to the housing (10) and a coil (24) wound on the surface of the iron core (21) and arranged opposite to the magnetic circuit structure (31); the magnetic circuit structure (31) comprises a first magnet assembly (311) and a second magnet assembly (312) disposed at the two sides of the stator (20) and symmetrical with respect to the stator (20), and magnetically permeable tabs (314) are arranged on the surface of the first magnet assembly (311) facing the stator (20) and on the surface of the second magnet assembly (312) facing the stator (20). By means of the magnetic conductivity of the magnetically permeable tabs, the present technical solution reduces the direct force between the first magnet assembly, the second magnet assembly, and the stator, thereby reducing the negative stiffness and improving the performance of the vibration motor.
Provided are a diaphragm and a sound production unit. The diaphragm comprises a diaphragm body, a fixing portion and a corrugated rim portion, wherein the fixing portion is arranged at the periphery of the diaphragm body; the corrugated rim portion is connected between the diaphragm body and the fixing portion; the corrugated rim portion comprises a first corrugated rim and second corrugated rims, the second corrugated rims being arranged adjacent to the first corrugated rim, at least two second corrugated rims are provided, the first corrugated rim protruding towards one side of the diaphragm body, and the second corrugated rims protruding towards the other side of the diaphragm body. The sound production unit comprises a magnetic circuit system and a vibration system, which comprises the diaphragm. A corrugated rim comprises a first corrugated rim and at least two second corrugated rims, the protruding direction of the first corrugated rim and the protruding direction of the second corrugated rims being respectively located on opposite sides of the diaphragm body, and by means of such a configuration, the diaphragm has an increased effective radiation area, and achieves better matching between a total stiffness coefficient and a force-electricity coupling coefficient, so as to reduce distortion.
Provided is a linear motor (100), comprising a sliding mechanism (10), and a primary mechanism (20) and secondary mechanism (30) arranged spaced at an interval from each other on said sliding mechanism (10) and interacting therewith to generate an electromagnetic thrust; said sliding mechanism (10) comprises a base (11) and a slide base (12) movably arranged on said base (11), said primary mechanism (20) being fixedly connected to said base (11) and said secondary mechanism (30) being fixedly connected to said slide base (12); or said primary mechanism (20) being fixedly connected to said slide base (12) and said secondary mechanism (30) being fixedly connected to said base (11); the secondary mechanism (30) comprises a magnetic yoke (32) and a plurality of permanent magnet assemblies (31) spaced at intervals along the direction of motion of the slide base (12) and embedded in said magnetic yoke (32), there being at least two of said secondary mechanisms (30), and said at least two secondary mechanisms (30) being spaced apart from and parallel to each other in the direction of motion of the slide base (12). The use of the described motor structure solves the technical problem of the motion performance of a linear motor (100) of the prior art being affected due to relatively large fluctuations in the pushing force of the linear motor (100).
The present application provides a linear motor and an electronic device. The linear motor comprises a drive assembly, an oscillator assembly, an elastic support member for supporting the oscillator assembly, and a housing having an accommodation space. The oscillator assembly comprises a mass block provided with a mounting cavity and a magnetic steel group provided in the mounting cavity; the mounting cavity comprises a first mounting recess and a second mounting recess; the magnetic steel group comprises a first magnetic steel and a second magnetic steel; the first magnetic steel matches the first mounting recess, and the second magnetic steel matches the second mounting recess; the orthographic projection of the second magnetic steel on the first magnetic steel in a vibration direction is at least partially located outside the first magnetic steel. According to the linear motor in the present embodiment, the first mounting recess and the second mounting recess staggered with each other are provided in the mounting cavity on the mass block, such that each magnetic steel in the magnetic steel group is mounted at a corresponding position, and can also be positioned by a corresponding mounting recess, thereby effectively improving the assembly consistency of the linear motor.
A linear motor (10) and an electronic device (1). The linear motor comprises a drive assembly (300), a vibrator assembly (200), an elastic support member (400) for supporting the vibrator assembly (200), and a housing (100) having an accommodation space (111); the vibrator assembly (200) comprises a mass block (210) fixed to the elastic support member (400), and a magnetic steel group (220), the mass block (210) has an annular portion (211) and a bearing portion (212) that are integrally formed, the bearing portion (212) is connected to the annular portion (211) to define a mounting cavity (213) having an opening (2131) at one end, and the magnetic steel group (220) is provided in the mounting cavity (213); the drive assembly (300) is provided at the side close to the opening (2131), and is capable of generating a variable magnetic field for driving the magnetic steel group (220) to move, so as to drive the mass block (210) to make reciprocating motion with respect to the housing (100). Compared with conventional linear motors, by providing, on a mass block, a mounting cavity having an opening at one end, the linear motor can achieve the function of limiting a magnetic steel group even when a pole core is removed; in addition, the assembling process is simplified, and glue leakage is avoided.
A vibration motor (10). The vibration motor (10) comprises a housing (100) having an accommodating space (101), and a vibrator assembly (200) and a stator assembly (300) which are accommodated in the accommodating space (101). The vibrator assembly (200) comprises a rigid member (210), a first elastic member (220), and a vibrator unit (230); the vibrator unit (230) is fixedly provided on the rigid member (210) by means of the first elastic member (220) and can vibrate back and forth in a first direction. The vibration motor (10) further comprises a second elastic member (500). The vibrator assembly (200) can vibrate back and forth in a second direction. The first elastic member (220) is used to connect the vibrator unit (230) to the rigid member (210), and the second elastic member (500) is used to connect the vibrator assembly (200) having the vibrator unit (230) to the housing (100), so that the first elastic member (220) and the second elastic member (500) are mutually decoupled and do not affect each other, and can provide restoring force of reciprocating vibration respectively in the first direction and the second direction. The restoring force from two directions is prevented from being provided by the same elastic member, it is guaranteed that the stress borne by the first elastic member (220) and the second elastic member (500) is small, and therefore high reliability is achieved after long-time use.
The present utility model provides a sound-producing device, comprising a vibration system and a magnetic circuit system; the vibration system comprises an annular diaphragm, a voice coil, and an outer frame which is annular and is sandwiched and fixed between the diaphragm and a magnetic conductive plate; the magnetic circuit system comprises magnetic yokes, main magnetic steels respectively fixed to the magnetic yokes, secondary magnetic steels surrounding the main magnetic steels, and the magnetic conductive plate; the magnetic conductive plate comprises a magnetic conductive plate body fixed to the main magnetic steels, and magnetic conductive plate side walls extending, in a bending manner, from the periphery of the magnetic conductive plate body to the direction of the magnetic yokes; the diaphragm is arranged surrounding the magnetic conductive plate side walls, the inner peripheral side of the diaphragm is connected to the magnetic conductive plate side walls; the outer frame comprises an annular outer frame body, and outer frame flange portions extending, in a bending manner, from the side of the outer frame body away from the magnetic yokes; the outer frame body is fixed to the inner peripheral side of the diaphragm and is arranged surrounding the magnetic conductive plate side walls, and the outer frame flange portions are fixed to the side of the magnetic conductive plate body away from the magnetic yokes. Compared with the related art, the sound-producing device of the present utility model has a simpler structure and higher reliability.
The present utility model provides a diaphragm, comprising a vibration portion located at a middle position, a folding ring portion which surrounds and is connected to the vibration portion, and a fixing portion bending and extending from the side of the folding ring portion away from the vibration portion. The folding ring portion is provided with a first pattern group and a second pattern group sequentially from the side close to the vibration portion to the side away from the vibration portion. The first pattern group comprises a plurality of first patterns circumferentially arranged at intervals along the inner side of the folding ring portion, each of the first patterns extending in a direction from the middle portion of the folding ring portion to the vibration portion; and the second pattern group comprises a plurality of second patterns circumferentially arranged at intervals along the outer side of the folding ring portion, each of the second patterns extending to the fixing portion along a direction from the middle portion of the folding ring portion to the fixing portion and being connected to the fixing portion. Compared with the related art, the diaphragm of the present utility model features uniform stress distribution, low high-order harmonic frequency distortion, and high reliability.
patents
