摘要:
The subject is to provide a liquid crystal composition that includes a polymerizable compound (or polymer) and a polar compound, where the homeotropic alignment of liquid crystal molecules can be achieved by the action of these compounds, and a liquid crystal display device including this composition.The means concerns a nematic liquid crystal composition that has positive dielectric anisotropy and that includes a polymerizable compound as a first additive and a polar compound as a second additive, and the composition may include a specific liquid crystal compound having a large positive dielectric anisotropy and a specific liquid crystal compound having a high maximum temperature or a small viscosity, and concerns a liquid crystal display device including the composition.
摘要:
A liquid crystal compound comprising a specific compound having a positive dielectric anisotropy as the first component, and a specific compound having a low viscosity as a second component. Further, the liquid crystal compound may contain a specific compound having a positive dielectric anisotropy as the third component, a specific compound having a maximum temperature or a low viscosity as the fourth component, or a specific compound having a negative dielectric anisotropy as the fifth component.
摘要:
The invention relates to bimesogenic compounds of formula I to the use of bimesogenic compounds of formula I in liquid crystal media and particular to flexoelectric liquid crystal devices comprising a liquid crystal medium according to the present invention.
摘要:
To provide a liquid crystal compound satisfying at least one of physical properties such as a high stability to heat, light and so forth, a high clearing point, a low minimum temperature of a liquid crystal phase, a small viscosity, a suitable optical anisotropy, a large dielectric anisotropy, a suitable elastic constant and an excellent compatibility with other liquid crystal compounds; a liquid crystal composition containing the compound; and a liquid crystal display device including the composition. The compound is represented by formula (1): wherein, for example, Ra and Rb are alkyl having 1 to 10 carbons, alkenyl having 2 to 10 carbons or alkoxy having 1 to 9 carbons; A1, A2 and A3 are 1,4-cyclohexylene or 1,4-phenylene; Z1 and Z2 are single bonds, —(CH2)2—, —CH═CH—, —COO—, —OCO—, —CF2O—, —OCF2—, —CH2O— or —OCH2—; Y1 is —CF2H or —CF3; Y2 is fluorine; and a, b and d are 0, 1, 2 or 3, and c is 1 or 3.
摘要:
The present invention relates to polymerizable compounds, to processes and intermediates for the preparation thereof, to the use thereof for optical, electro-optical and electronic purposes, in particular in liquid-crystal (LC) media and LC displays having a polymer-stabilized blue phase, and in LC media for LC displays of the PS or PSA type (“polymer sustained” or “polymer sustained alignment”), and to LC media and LC displays comprising these compounds.
摘要:
The invention provides a liquid crystal compound represented by formula (1): wherein, in formula (I), for example, R1 is fluorine, chlorine, or alkyl having 1 to 10 carbons, and in the alkyl, at least one of —CH2— may be replaced by —O—, —S—, —CO— or —SiH2—, and at least one of —(CH2)2— may be replaced by —CH═CH— or —C≡C—. The compound has a low threshold voltage and excellent compatibility with other liquid crystal compounds, and further excellent general physical properties required for the compound. The invention also provides a liquid crystal composition containing at least one of the compounds and having excellent properties, and a liquid crystal display device including the composition, and having a wide usable temperature range, a short response time, a large contrast ratio and a low driving voltage, and therefore can be used for a liquid crystal projector and a liquid crystal television.
摘要:
The invention is to provide a liquid crystal composition that satisfies at least one of characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of a nematic phase, a small viscosity, a large optical anisotropy, a large dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to heat, or that is suitably balanced regarding at least two of the characteristics. The invention is to provide an AM device that has a short response time, a large voltage holding ratio, a large contrast ratio, a long service life and so forth.The invention is a liquid crystal composition that has a nematic phase and includes a specific four-ring compound having a high maximum temperature and a large optical anisotropy as a first component, and a specific four-ring compound having a large dielectric anisotropy as a second component, and is a liquid crystal display device containing this composition.
摘要:
The present invention relates to polymerisable compounds, to processes and intermediates for the preparation thereof, to the use thereof for optical, electro-optical and electronic purposes, in particular in liquid-crystal (LC) media and LC displays having a polymer-stabilised blue phase, and in LC media for LC displays of the PS or PSA type (“polymer sustained” or “polymer sustained alignment”), and to LC media and LC displays comprising these compounds.
摘要:
The invention relates to a liquid-crystalline medium which comprises at least one compound of the formula I, and to the use thereof for an active-matrix display, in particular based on the VA, PSA, PS-VA, PALC, FFS or IPS effect.
摘要:
The invention relates to a liquid crystal display utilizing a vertically aligned state of liquid crystal molecules when no voltage is applied and to a method of manufacturing the same.The liquid crystal display includes a monofunctional monomer having a structure expressed by X—R (where X represents an acrylate group or a methacrylate group, and R represents an organic group having a steroid skeleton). A liquid crystal material is sandwiched between substrates which is then irradiated with ultraviolet rays to cure the monofunctional monomer, thereby forming a polymer film at an interface of a substrate. The monofunctional monomer has a hydrophobic skeleton such as an alkyl chain and a photoreactive group on one side of the skeleton.