Abstract

A main object of the present invention is to provide a birefringence improving agent that can realize a satisfactory white display even in a liquid crystal display device in which a ferroelectric liquid crystal composition is used and which can reduce the birefringence and has a large cell gap; a ferroelectric liquid crystal composition and a liquid crystal display device that use the birefringence improving agent; and a compound that can be used in a ferroelectric liquid crystal composition.

IPC Classes  ?

• G02F 1/1333 - Constructional arrangements
• G02F 1/141 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent using ferroelectric liquid crystals
• C09K 19/02 - Liquid crystal materials characterised by optical, electrical or physical properties of the components, in general
• C09K 19/12 - Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings at least two benzene rings directly linked, e.g. biphenyls
• C09K 19/30 - Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing saturated or unsaturated non-aromatic rings, e.g. cyclohexane rings
• C07C 69/753 - Esters of carboxylic acids having an esterified carboxyl group bound to a carbon atom of a ring other than a six-membered aromatic ring of polycyclic acids
• C09K 19/34 - Non-steroidal liquid crystal compounds containing at least one heterocyclic ring
• G02F 1/1337 - Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
• C09K 19/04 - Liquid crystal materials characterised by the chemical structure of the liquid crystal components

Abstract

A main object of the present invention is to provide a birefringence improving agent that can realize a satisfactory white display even in a liquid crystal display device in which a ferroelectric liquid crystal composition is used and which can reduce the birefringence and has a large cell gap; a ferroelectric liquid crystal composition and a liquid crystal dispaly device that use the birefringence improving agent; and a compound that can be used in a ferroelectric liquid crystal composition.

IPC Classes  ?

• G02F 1/13363 - Birefringent elements, e.g. for optical compensation

Abstract

A system having a vertically-aligned negative delta E nematic liquid crystal host material and a small amount of liquid crystal polymer is provided. The liquid crystal polymer improves the switching speed of a vertically aligned nematic system without sacrificing contrast or viewing angle.

IPC Classes  ?

• C09K 19/34 - Non-steroidal liquid crystal compounds containing at least one heterocyclic ring
• C09K 19/30 - Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing saturated or unsaturated non-aromatic rings, e.g. cyclohexane rings
• C09K 19/38 - Polymers, e.g. polyamides
• C09K 19/54 - Additives having no specific mesophase
• C09K 19/12 - Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings at least two benzene rings directly linked, e.g. biphenyls
• C09K 19/40 - Liquid crystal materials characterised by the chemical structure of the liquid crystal components containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen or sulfur, e.g. silicon, metals

Abstract

A system having a ferroelectric liquid host material and a small amount of polymer additive is provided. In an embodiment, the polymer additive improves the physical characteristics of the system. In an embodiment, the system can be used in FLC applications.

IPC Classes  ?

• C09K 19/38 - Polymers, e.g. polyamides
• C09K 19/20 - Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings linked by a chain containing carbon and oxygen atoms as chain links, e.g. esters
• C09K 19/30 - Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing saturated or unsaturated non-aromatic rings, e.g. cyclohexane rings
• C09K 19/32 - Non-steroidal liquid crystal compounds containing condensed ring systems, i.e. fused, bridged or spiro ring systems
• C09K 19/34 - Non-steroidal liquid crystal compounds containing at least one heterocyclic ring
• C09K 19/12 - Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings at least two benzene rings directly linked, e.g. biphenyls
• C09K 19/54 - Additives having no specific mesophase
• G02F 1/137 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
• G02F 1/141 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent using ferroelectric liquid crystals
• C09K 19/02 - Liquid crystal materials characterised by optical, electrical or physical properties of the components, in general
• C09K 19/40 - Liquid crystal materials characterised by the chemical structure of the liquid crystal components containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen or sulfur, e.g. silicon, metals

Abstract

A system having a ferroelectric liquid host material and a small amount of polymer additive is provided. In an embodiment, the polymer additive improves the physical characteristics of the system. In an embodiment, the system can be used in FLC applications.

IPC Classes  ?

• C09K 19/02 - Liquid crystal materials characterised by optical, electrical or physical properties of the components, in general
• C09K 19/12 - Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings at least two benzene rings directly linked, e.g. biphenyls
• C09K 19/38 - Polymers, e.g. polyamides
• G02F 1/141 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent using ferroelectric liquid crystals