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5104569 |
Liquid crystalline mixtures including 2-phenylpyridine compounds
Compounds of the formula ##STR1## wherein R 1 is alkyl or alkenyl; Z 1 denotes a single covalent bond or --CH 2 CH 2 --; ring A represents unsubstituted or halogen- and/or methyl-substituted...
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5100577 |
Ferroelectric liquid crystal mixtures and compounds as well as electro-optical devices employing same
A ferroelectric liquid crystalline mixture containing at least one optically active compound of the general formula ##STR1## wherein X 1 denotes a single covalent bond, --COO--, --OOC--, --CH 2 ...
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5100578 |
2,5-diphenylpyrimidine compound
An optically active compound having a large spontaneous polarization ps value (ps) particularly for realizing a high speed response, and a liquid crystal composition are provided, which compound is...
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5098599 |
Optically active compound and liquid crystal composition
Disclosed is an optically active compound represented by the formula: ##STR1## or a single bond, Z stands for a hydrogen atom, a halogen atom or a cyano group, R 1 stands for an alkyl group or...
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5098600 |
Liquid crystal compound, liquid crystal composite including the compound and liquid crystal device utilizing the composite
There is provided a liquid crystal compound represented by the following general formula (I), a liquid crystal composite including at least one kind of above liquid crystal compound and a liquid...
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5082587 |
Achiral fluorine-containing liquid crystals
Achiral fluorine-containing liquid crystal compounds are provided. The compounds comprise a fluorocarbon terminal portion and a hydrocarbon or another fluorocarbon terminal portion, the terminal...
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5076947 |
1-Phenyl-1-propanol derivative
An optically active compound having a high twistability and almost no change in the intrinsic pitch depending on temperature, and a liquid crystal composition comprising the compound are provided,...
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5075032 |
Smectic liquid-crystalline phases
The invention relates to the use of compounds of the formula I R 1 -Q 1 -A-(Q 2 ) q -R 2 I wherein A denotes ##STR1## and R 1 , R 2 , Q 1 , Q 2 and q have the meaning...
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5068053 |
Ethyne derivatives as a component of liquid crystal phases
Ethyne derivatives of the formula I R 1 --(A 1 --Z 1 ) m --A 3 --C.tbd.C--A 4 -(Z 2 -A 2 ) n --R 2 I wherein R 1 , A 1 , Z 1 m, A 3 , A 4 , Z 2 , A 2 , n...
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5064564 |
Optically active compound, intermediate therefor, process for producing the intermediate, and liquid-crystal composition
The present invention discloses an optically active compound represented by the following general formula (I): ##STR1## wherein R 1 represents an alkyl, alkoxyl, or alkoxyalkanoyloxy group which...
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5064567 |
Nematic liquid-crystal composition for active matrix application
The invention relates to nematic liquid-crystal compositions for active matrix displays with high voltage holding ratios.
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5062990 |
Discotic octasubstituted tetrapyrazinotetraazaporphyrazines
Octasubstituted tetraphyrazinotetraazaporphrazine and compositions forming an electron acceptable discotic liquid crystal phase are disclosed. Said compounds and the metal complexes are easily...
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5061398 |
Optically active lactone derivative, intermediate therefor, process for producing the intermediate, liquid-crystal composition, and liquid-crystal display device
An optically active lactone derivative represented by the following general formula (I): ##STR1## wherein R 1 represents a straight-chain or branched alkyl, alkoxyl, alkanoyloxy, alkoxycarbonyl,...
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5059340 |
Optically active 2-biphenylpyrimidine derivative and liquid crystal compositions containing same
An optically active compound having a large spontaneous polarization value and capable of affording a composition exhibiting a suitable ferroelectric liquid crystal temperature range and a liquid...
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5059345 |
Optically active compound and chiral liquid crystal composition containing the same
An optically active compound represented by the general formula (I) of: R--Z--COO--(Ph) k --Ph(Y)--CO--(CH 2 ) m C*HE L (1) In the general formula (I); R is an alkyl or alkoxy group having 4 to...
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5055222 |
α-substituted-propionic acid esters
An optically active compound exhibiting high speed response properties when used as a component of liquid crystal materials used in a liquid crystal display mode utilizing ferroelectricity, and a...
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5055221 |
Smectic liquid-crystalline phases
Compounds of the formula I, R 1 --A 1 --Z 1 --A 2 --[Z 2 --A 3 ] m --R 2 I in which R 1 , R 2 , A 1 , A 2 , A 3 , Z 1 , Z 2 and m have the...
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5055223 |
Aryl-sulfur pentafluorides
Aryl-sulfur pentafluorides of the formula I ##STR1## wherein R, A, Z, n, m and X° have the meaning indicated in claim 1 are suitable for use as components of liquid-crystal phases for field-effect...
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5053162 |
Difluoroalkylcyclohexylbenzonitrile derivative
A liquid crystalline compound having a small Δn value; suitable for preparing a liquid crystal display element having a broad viewing angle; having a large positive Δε value; and suitable for...
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5047171 |
Optically active-2,5-diphenylpyridine
A liquid crystal compound suitable as a material for ferroelectric liquid crystal display elements and a liquid crystal composition containing the same are provided, which liquid crystal compound...
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5047172 |
W-substituted, optically active alkanol ester derivatives
Novel compounds characterized by increased spontaneous polarization values as one of the important specific features required for ferroelectric liquid crystal compositions, a liquid crystal...
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5045228 |
Optically active compound having XI-valerolactone ring and liquid crystal composition comprising same
An optically active compound having a δ-valerolactone ring which is a ferroelectric liquid crystal and is represented by the following general formula (I): ##STR1## wherein m is an integer of from...
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5045229 |
Difluoromethylene compounds
Difluoromethylene compounds of the formula I R 1 --(A 1 --Z 1 ) m --A 2 --Q--CF 2 --(A 3 --Z 2 ) n --A 4 --R 2 I in which R 1 , R 2 , A 1 , A 2 , A 3 , A 4 , Z 1 , Z...
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5043095 |
Chiral esters of mesogenic carboxylic acids in liquid crystal phases
The novel esters of a chiral alcohol and a mesogenic carboxylic acid are characterized by the general formula (I) ##STR1## in which the symbols have the following meanings: n denotes 0 or 1, R 1...
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5043094 |
Optically active bisaryl compound
An optically active bisaryl compound represented by the general formula (I): ##STR1## wherein Ar 1 and Ar 2 represent each a phenyl, naphthyl, biphenyl or pyrimidylphenyl group optionally...
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5034151 |
Mesomorphic compound, ferroelectric liquid crystal composition containing same and ferroelectric liquid crystal device
There is disclosed a mesomorphic compound represented by the following formula (I): ##STR1## wherein A 1 denotes a single bond, ##STR2## denotes ##STR3## X denotes hydrogen, a halogen or cyano...
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5032314 |
Optically active 2-substituted-propyl ether and a liquid crystal composition
A compound capable of shortening the response time of liquid crystal display elements and a composition containing the same are provided, which compound is expressed by the formula ##STR1## wherein...
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5032312 |
3E-cyclohexylalkoxy derivatives
Compounds of the formula ##STR1## wherein R 1 denotes a group R 3 or R 3 --A 4 --Z 3 -- and R 2 denotes a group R 4 or --Z 4 --A 5 --R 4 ; m and n each individually stand for the number 0...
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5030382 |
Pyrimidine derivatives
2-(3',5'-difluoro-4'-cyanophenyl)pyrimidine derivatives represented by the general formula: ##STR1## wherein R is a straight chain alkyl having 1 to 10 carbon atoms, n is 0 or 1, the cyclohexane...
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5030383 |
Electrooptical display element
The invention relates to a liquid crystal display element with a particularly low temperature-dependence of the threshold voltage.
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5026506 |
Chiral smectic liquid crystal composition
A chiral smectic liquid crystal composition comprising one or more liquid crystalline compound exhibiting a smectic C phase and at least one compound of the formula (A): ##STR1## wherein R 1 and R...
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5026879 |
1,3-dioxane derivatives and composition including same
2-(3', 4'-difluorophenyl)-1,3-dioxane derivatives represented by the general formula: ##STR1## wherein R is a linear alkyl group having from 1 to 8 atoms, and having large positive dielectric...
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5021191 |
Optically active-2-alkoxy-propyl ether and liquid crystal composition
An optically active substance which, when added as a component of ferroelectric liquid crystal compositions, is extremely small in the reduction of the resulting liquid crystal temperature region,...
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5013476 |
Liquid crystal compounds and indicating device employing same
A ferroelectric liquid crystal mixture containing at least one compound of the formula ##STR1## wherein n stands for the number 0 or 1; X 1 represents a single covalent bond, --COO-- or --OOC--...
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5013475 |
Optically active ester compound and liquid crystal composition containing the same
An optically active ester compound useful as a component of a ferroelectric liquid crystal composition is represented by the following formula: ##STR1## wherein R is C 1 -18 alkyl or C 1 -18...
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5006276 |
Liquid crystal composition and display element using the same
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5002694 |
Nitrogen-containing heterocyclic compounds
Nitrogen-containing heterocyclic compounds of the formula II ##STR1## wherein R 1 and R 2 in each case denote an alkyl group having 1 to 15 C atoms, wherein one or more CH 2 groups may also be...
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4997942 |
2,4-disubstituted pyrazine derivatives, pyrimidine derivatives, and liquid crystal containing the same
A 2,5-disubstituted pyrazine derivative and a 2,5-disubstituted pyrimidine derivative of the formula (I): ##STR1## wherein R 1 and R 2 each independently represents a straight-chain or branched...
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4997591 |
Chiral smetic liquid crystals and glassy materials containing the same for displaying and storing information
The chiral smetic liquid-crystalline compounds of the general formula (I) M 1 * --B--M 2 * (I) solidify on cooling from the liquid-crystalline phase in glassy form, as a...
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4988459 |
Use of optically active oxirane-2-carboxylic acid esters as dopants in liquid-crystal mixtures, liquid-crystal mixtures containing same and novel optically active oxirane-2-carboxylic acid esters
Optically active oxirane-2-carboxylic acid esters with a mesogenic molecular component suitable as dopants in liquid-crystal mixtures. They result in liquid-crystalline ferroelectric phases with...
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4985172 |
Chiral aryloxypropionates, and the use thereof as dopes in liquid-crystal phases
Arylcarboxylates of 2-hydroxypropionates are known, amongst other compounds, as dopes for converting tilted smectic liquid-crystal phases into ferroelectric liquid-crystal phases. The novel chiral...
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4980083 |
Optically active compound and liquid crystal composition containing the same
An optically active compound useful as a component of a ferroelectric liquid crystal composition represented by the following general formula (I) and a ferroelectric liquid crystal composition...
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4980486 |
Liquid crystalline compounds and mixtures
This invention concerns compounds of the formula: ##STR1## wherein X is a single covalent bond, --CH 2 CH 2 --, 1,4-phenylene, a 2,5-disubstituted pyrimidine ring or a group of the formula:...
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4980082 |
Ferroelectric SmC liquid crystal composition which comprises pyrimidinylphenyl ester compounds
This invention relates to new optically active pyrimidinylphenyl ester compounds, having a liquid crystal phase of cholesteric and/or smectic C* phase, of the formula: ##STR1## wherein R*...
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4973425 |
Liquid crystal composition and use thereof
Liquid crystal composition which comprises at least one liquid crystalline compound having an optically active γ-lactone ring of the formula (A): ##STR1## wherein R 1 is a group selected from the...
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4973426 |
Optically active compound having a plurality of asymmetric carbon atoms
An optically active compound having particularly a specific feature of increasing spontaneous polarization value as one of important specific features for ferroelectric liquid crystal compositions,...
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4970022 |
Liquid-crystalline mustard oils
Mustard oils of the formula I R--(A 1 --Z 1 ) n --A 2 --Z 2 --A 3 --NCS in which A 1 , A 2 , A 3 , R, Z 1 , Z 2 and n have the meaning specified in claim 1 can be used as components of...
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4966727 |
Ferroelectric liquid crystal mixture for guest-host type display elements
A ferroelectric smectic C liquid crystal mixture having a smectic A phase region within 30° C. on the higher temperature side relative to a chiral smectic C phase and also having a tilt angle at...
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4965018 |
Optically active pyridylethanol derivative
A novel optically active pyridylethanol derivative having a high twistability and also a superior temperature characteristic is provided, which derivative is expressed by the formula ##STR1##...
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4963288 |
Fluoroalkoxydiphenyl pyrimidine, liquid crystal composition and electro-optic element
New fluoroalkoxydiphenyl pyrimidines which are organic compounds having optically active groups, liquid crystal compositions containing the said compounds and electro-optic elements using the said...
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