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6099751 Chiral compounds  
Chiral compounds of the formula I ##STR1## where: R1,R2,R3,R4 are hydrogen or aromatic, aliphatic or araliphatic radicals having 1 to 40 carbon atoms, R5,R6,R7,R8 are aromatic or aliphatic...
6096242 Liquid crystal compositions and liquid crystal display elements  
Liquid crystal compositions comprising at least two components wherein the first component is at least one selected from propiolonitrile derivatives containing 2-4 rings and the second component...
6093345 Optically active compound, liquid crystal composition containing the same, and liquid crystal electro-optic element using the same  
An optically active compound represented by formula (I): wherein A represents ##STR1## wherein R2 represents an alkyl group having from 8 to 12 carbon atoms; R1 represents a straight chain alkyl...
6086964 Liquid crystalline compound having dienyl moiety and liquid crystal composition  
The present invention is to provide a liquid crystallineThe present invention is concerned with a liquid crystalline compound expressed by general formula (1) ##STR1## wherein R1 represents cyano...
6084649 Tristable liquid crystal display device  
A tristable liquid crystal display device comprises (a) first and second opposed substrates, at least one bearing an alignment coating and each bearing at least one electrode so as to define one...
6080452 Electro-optical liquid-crystal display  
The invention relates to an electro-optical liquid-crystal display having a realignment layer for realigning the liquid crystals whose field has a significant component parallel to the...
6067130 Ferroelectric liquid crystal composition and liquid crystal display device  
Ferroelectric liquid crystal compositions having a large dependency of spontaneous polarization on temperature; liquid crystal display devices exhibiting a small dependency of response speed on...
6060133 Polysiloxanes  
A compound of formula I ##STR1## wherein n=3-30; X and Y are independently chosen from C1-6 alkyl, phenyl or formula II: (CH2)p O--M II wherein p=1-20 and M is a group of formula III: ##STR2##...
6059994 Liquid crystal compositions  
A liquid crystal composition having a high order, tilted ferro-electric achiral Smectic I phase exhibiting a relaxed cone angle of greater than 20° in the absence of high surface tilt alignment...
6056893 Dopants  
A dopant compound of the formula I R1 -(A1 -Z1)n -A2 -W Iin which ##STR1## and R1, A1, A2, Z1 n, X and Ra are as defined in claim 1, and to the use thereof as chiral dopants in liquid-crystalline...
6056894 TN and STN liquid-crystal display  
TN liquid-crystal displays and supertwist liquid-crystal displays (SLCDs) having very short response times and good steepnesses and angle dependencies are obtained by using nematic liquid-crystal...
6054193 Supertwist liquid-crystal display  
Supertwist liquid-crystal displays having excellent properties are obtained if the nematic liquid-crystal mixture comprises at least one compound of the formula I: ##STR1## and at least one...
6051288 Fluorine-substituted liquid-crystal compound, liquid-crystal composition and liquid-crystal display device  
PCT No. PCT/JP96/01010 Sec. 371 Date Sep. 26, 1997 Sec. 102(e) Date Sep. 26, 1997 PCT Filed Apr. 12, 1996 PCT Pub. No. WO96/32365 PCT Pub. Date Oct. 17, 1996An object of the present invention is...
6045720 Pyridine compound and liquid crystalline composition  
A compound expressed by the following formula (1) and a liquid crystalline composition with using it are provided: ##STR1## wherein, either one of rings A, B and C denotes ##STR2## remaining two...
6030546 Trans-olefin compounds, method for production thereof, liquid crystal composition containing the same as active ingredient, and liquid crystal element using said composition  
The present invention relates to trans-olefin compounds represented by the general formula (1) useful as an ingredient of liquid crystal composition, trans-olefin compounds useful as intermediate...
6028655 TN and STN liquid-crystal display  
The invention relates to TN liquid-crystal displays and supertwist liquid-crystal displays (SLCDs) having very short response times and good steepnesses and angle dependences, and to the novel...
6022492 Difluorophenyl pyrimidyl pyridine derivatives and the use thereof in liquid crystal mixtures  
Difluorophenylpyrimidylpyridine derivatives of the formula (I) ##STR1## wherein X is N and Y is CH or X is CH and Y is N; R1 and R2 are identical or different and are a) an unbranched or branched...
6019911 Polycyclic compound, liquid crystal material consisting of the polycyclic compound, liquid crystal composition comprising the liquid crystal material, and liquid crystal element  
Disclosed is a polycyclic compound represented by the following formula (I): R1 --X1 --[A1 --X2 ]--[A2 --X3 ]--R2 (I)wherein R1 is a (halogenated) alkyl group of 6 to 16 carbon atoms, X1 is --O--...
6017467 Propiolonitrile derivatives and liquid crystal compositions comprising the same  
A propiolonitrile derivative of formula (I) ##STR1## wherein n1 and n2 each independently stand for 0 or 1; A1, A2 and A3 each independently represent a 1,4-phenylene, a 1,4-phenylene substituted...
6015508 Liquid crystalline compounds containing hydrocarbon groups, liquid crystalline compositions, and liquid crystal display elements  
Disclosed are (A) a liquid crystalline compound of the general formula: ##STR1## wherein X1 stands for a hydrogen atom, cyano group, a halogen atom, or an alkyl group with 1-20 carbon atoms, and...
6010641 Liquid crystal polymer devices and materials  
Methods for loading and alignment of liquid crystal polymers in electro-optic and electro-active devices comprise in-situ polymerisation between substrates of monomer material in the presence of a...
6010642 Azine derivative, process for the preparation thereof, nematic liquid crystal composition and liquid crystal display system comprising same  
Disclosed is to provide an azine derivative as a novel liquid crystal compound, a novel process for the preparation of an asymmetrical azine in a high reaction yield with an extremely small amount...
6010643 Cholesteric polymer network  
The invention relates to a liquid material in the form of cholesteric polymer network, wherein the polymerized material is obtainable by copolymerization of a compound (a) having at least two...
6007737 Liquid crystal compositions  
The first smectic liquid crystal composition of the invention has a voltage gradation parameter L of less than 0.6, said parameter being defined by the equation L=SH /SO with the proviso that: a...
6007739 Liquid crystal compound, liquid crystal composition, and liquid crystal display device using the same  
A liquid crystal compound of the present invention is represented by the following general Formula I: ##STR1## wherein R1 and R2 are independently a linear or branched alkyl group or alkoxy group...
6004478 Silacyclohexane compounds, preparation thereof, liquid crystal compositions comprising the same, and liquid crystal devices comprising the composition  
A silacyclohexane compound of the formulas (I) ##STR1## wherein R represents an organic residue, ##STR2## represents an unsubstituted or substituted silicon-containing cyclohexylene group or a...
5997766 Halovinyloxy-substituted dioxane derivatives  
Halovinyloxy-substituted dioxane derivatives of the formula I in which R, X, Y and n are as defined in claim 1, are useful as components of liquid-crystalline media, and in liquid-crystal and...
5989452 Fluoroalkenyl derivative and liquid crystal composition  
The present invention is to provide liquid crystalline compounds having a wide temperature range of a liquid crystal phase, low viscosity, and large ratio of elastic constants; liquid crystal...
5980778 Liquid crystal composition and liquid crystal display element comprising the same  
The invention presents an excellent liquid crystal display composition possessing a negative dielectric anisotropy, comprising one or more compounds selected from the group consisting of formulas...
5976408 Acrylonitrile derivative, liquid crystal composition, and liquid crystal display device  
An acrylonitrile derivative expressed by the following general formula I, a composition comprising the derivative and having an improved viscosity and optical anisotropy, and a liquid crystal...
5972240 Liquid crystal composite material and liquid crystal display device(s) which use them  
Liquid crystal composite materials containing organic compounds enable the lowering of the drive voltage of liquid crystal display devices and of liquid crystal display devices of a...
5972241 Liquid crystal compounds having a chiral fluorinated terminal portion  
Fluorine-containing, chiral liquid crystal compounds comprise (a) a chiral fluorochemical terminal portion containing at least one methylene group and optionally containing at least one catenary...
5969154 Liquid crystalline diketopyrrolopyrroles  
A liquid crystalline compound of formula ##STR1## wherein B and D are each independently of the other C6 -C24 alkyl, ##STR2## L is ##STR3## methyl or C10 -C18 alkyl, wherein R1 is C4 -C18 alkyl,...
5965059 Optically active compound, antiferroelectric liquid crystal composition containing the same, process for producing the same and process for producing an optically active carboxylic acid  
An optically active compound which itself generally exhibits no antiferroelectric liquid crystal phase, but which can be added to an antiferroelectric liquid crystal or composition thereof having...
5961880 1,3-dioxane derivatives having axial fluorine substitution  
1,3-Dioxane compounds of the formula I R1 --(A1 --Z1)m --W--(Z2 --A2)n --R2(I)in which W is ##STR1## and R1, R2, A1, A2, Z1, Z2, m, n, ##STR2## n1, n2, n3, n4, n5, n6, Z3 and Z4 are as defined...
5955000 Chiral compounds  
This invention describes compounds of formula (I) ##STR1## wherein R is C1-16 alkyl or alkoxy; X is selected from F and Cl and indicates that one or more of the phenyl rings may be laterally...
5955001 Antiferroelectric liquid crystal composition and liquid crystal indicating element  
An antiferroelectric composition comprising 70 wt % or more of a mixture consisting of two groups of compounds represented by the following general formula (I): ##STR1## wherein each of R, R1, R2...
5951913 Liquid crystal compositions comprising silacyclohexane compounds  
A liquid crystal composition having a liquid crystal component with a chemical structure of two saturated rings connected directly to one another, and an additional structural isomer thereof...
5932138 Benzene derivatives, and liquid-crystalline medium  
The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, characterized in that it contains one or more compounds of the general...
5928562 Process for controlling cone tilt angle in mixtures of smectic liquid crystal compounds  
A process for controlling the cone tilt angle of a tilted smectic liquid crystal composition comprises the step of combining (a) at least one liquid crystal composition comprising at least one...
5914071 Difluoroethylene compounds and liquid crystal compositions containing them  
A difluoroethylene compound of the following formula (1) having a liquid crystal property is provided: R1 --(A1)m --Y1 --A2 --CFCF--A3 --Y2 --(A4)n --R2 (1)wherein A1 --A4, Y1, Y2, R1, R2, m and...
5911912 Halovinyl ethers  
Halovinyl ethers of the general formula I ##STR1## in which R, A1, A2, A3, Z1, Z2, X1, X2, l, m and n are as defined herein are suitable as components of liquid-crystalline media.
5911913 1-fluoroisoquinoline derivatives and the use thereof in liquid crystalline mixtures  
1-Fluoroisoquinolinc derivatives of the formula (I) R1 (--M1)a (--A1 --M2)b (--A2 --M3)c --B(--M4 --A3)d (--M5 --A4)e (--M6)f --R2 ( 1)where the group B is ##STR1## R1 and R2 are alkyl radicals...
5888423 Fluorobenzyl ether derivatives  
Flourobenzyl ether derivatives of the formula ##STR1## and liquid crystalline mixtures which contain such compounds are prepared and employed in electro-optical display devices.
5888421 Anisotropic organic compounds  
(I) R3J(X)kYR4 (II) The invention describes liquid crystalline compounds or formula (I), where A, D and G are independently selected from phenyl, thiophene, hydrogenated phenyl, chlorinated phenyl...
5886242 Polymerizable, chiral compounds and their use  
The invention relates to chiral compounds containing at least one divalent or polyvalent chiral group, at least one polymerizable group, at least one spacer and at least one mesogenic group, and...
5879585 Liquid crystalline compound having alkynyl group, and liquid crystal compositions and liquid crystal display device therefrom  
A liquid crystalline compound having a remarkably high Δn and good miscibility with other liquid crystalline compounds, and expressed by the general formula (1) ##STR1## wherein R1 represents, for...
5876627 Dichroic dye liquid crystal composition containing the dye, and liquid-crystal element  
A dichroic azo dye represented by general formula I! ##STR1## wherein D1 and D2 each represents an optionally substituted phenyl group or an aromatic heterocyclic group; W represents a connecting...
5876628 Compounds for use in liquid-crystal composition  
Ferroelectric liquid crystal mixtures containing compounds of the formula (I): ##STR1## wherein R1 is, for example, a straight-chain or branched alkyl radical having 1 to 22 carbon atoms, in which...
5874023 1-Fluoro-6,7-dihydro-5H-isoquinolin-8-one derivatives and the use in liquid crystalline mixtures  
1-Fluoro-6,7-dihydro-5H-isoquinolin-8-one derivatives of the formula (I) R1 (--M1)a (--A1 --M2)b (--A2 --M3)c --B(--M4 --A3)d (--M5 --A4)e (--M6)f --R2 (I)where B, R1, R2, M1, M2, M3, M4, M5 M6,...