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5922242 |
Liquid crystal display
An LCD which having a high response speed, a wide viewing angle and a high contrast and capable of displaying high-quality gray-scale images at normal temperature. The LCD comprises an array...
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5911913 |
1-fluoroisoquinoline derivatives and the use thereof in liquid crystalline mixtures
1-Fluoroisoquinolinc derivatives of the formula (I) R 1 (--M 1 ) a (--A 1 --M 2 ) b (--A 2 --M 3 ) c --B(--M 4 --A 3 ) d (--M 5 --A 4 ) e (--M 6 ) f --R 2 ( 1) where the...
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5911911 |
Polymerized liquid-crystalline compositions
Polymerized liquid-crystalline compositions are obtainable by radiation curing of mixtures comprising P0 a) one or more cellulose derivatives in which some or all of the hydroxyl groups of the...
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5904877 |
Trifluoratetrahydroisoquinoline derivatives, and the use thereof in liquid-crystalline mixtures
1,8,8-Trifluoro-5,6,7,8-tetrahydroisoquinoline derivatives, and their use in liquid-crystalline mixtures 1,8,8-Trifluoro-5,6,7,8-tetrahydroisoquinoline derivatives of the formula (I) R 1 (--M 1...
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5891359 |
Liquid crystal compound
The novel liquid crystal compounds of the present invention are represented by the following formulas I!- II! and have tristable molecular orientation states and can be used for display devices...
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5888422 |
Fluorinated phenanthrene derivatives and their use in liquid-crystal mixtures
Fluorinated phenanthrene derivatives of the formula (I) ##STR1## in which the symbols and indices have the following meanings: E 1 , E 2 , E 3 , E 4 , E 5 and E 6 are identical or different and...
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5888420 |
Liquid crystal device and process for preparing the same
Disclosed is a liquid crystal device comprising a liquid crystal cell filled with a liquid crystal material capable of exhibiting a smectic phase, said cell including upper and lower substrates...
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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 to...
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5882546 |
1,8-Difluorisoquinoline derivatives and the use thereof in liquid crystalline mixtures
1,8-Difluoroisoquinoline derivatives of the formula (I) R 1 (--M 1 ) a (--A 1 --M 2 ) b (--A 2 --M 3 ) c --B(--M 4 --A 3 ) d (--M 5 --A 4 ) e (--M 6 ) f --R 2 (I) in...
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5876627 |
Dichroic dye liquid crystal composition containing the dye, and liquid-crystal element
A dichroic azo dye represented by general formula I! ##STR1## wherein D 1 and D 2 each represents an optionally substituted phenyl group or an aromatic heterocyclic group; W represents a...
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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) R 1 (--M 1 ) a (--A 1 --M 2 ) b (--A 2 --M 3 ) c --B(--M 4 --A 3 ) d (--M 5 --A 4 ) e (--M 6 ) f --R 2 ...
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5872301 |
Bifunctional precursors for the preparation of liquid crystals
Bifunctional compounds of the formula (I), ##STR1## in which: ##STR2## are naphthalene-2,6-diyl or ##STR3## is naphthalene-2,6-diyl or ##STR4## U, X, Y and Z are --CH, --CF and --N, with...
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5868960 |
Mesomorphic compound, liquid crystal composition containing the compound, liquid crystal device using the composition, liquid crystal apparatus and display method
A mesomorphic compound of the formula (I) according to Claim 1 characterized by having at least two ether groups between alkylene groups in a specific alkoxy perfluoroalkyl terminal group is...
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5863457 |
Polymerizable liquid crystal composition and optically anisotropic film comprising the same
The present invention provides a novel polymerizable liquid crystal composition which can be used as an optical material, display material or recording material. More particularly, the present...
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5861108 |
Naphthalene compound, and liquid crystal composition and liquid crystal element using the same
Provided is a naphthalene compound represented by the following Formula (1): ##STR1## wherein R 1 and R 2 each represent a linear or branched alkyl group having 1 to 20 carbon atoms, an...
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5855812 |
Compounds and 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...
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5851424 |
Photo cross-linkable liquid crystalline 1,4-dioxane-2,3 diyl derivatives
The present invention is concerned with photo cross-linkable liquid crystalline compounds of the general formula ##STR1## wherein A 1 and A 2 each represent a cross-linkable, mesogenic residue,...
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5851425 |
Imidazothiazoles
Compounds of the general formula ##STR1## have a pronounced tendency to form liquid crystalline S (smectic) phases. Thus, optically inactive compounds of the formula I also have a tilted smectic...
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5851427 |
Photocross-linkable naphthyl derivatives
Photocross-linkable naphthyl derivatives include compounds of the formula: ##STR1## wherein R 1 and R 2 each independently signify a cross-linkable group; S 1 and S 2 signify --(CY 2 ) m -,...
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5849217 |
Optically active compound, liquid crystal composition containing the same, liquid crystal device using the same, liquid crystal apparatus and display method
An optically active compound represented by the formula R 1 --A 1 --A 2 --X 1 --A 3 --(CH 2 ) p --L--A 4 --R 2 , in which R 1 is F, CN or straight chain, branched or cyclic alkyl and R 2 ...
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5840208 |
Liquid crystal composition and liquid crystal display element
A chiral nematic liquid crystal composition which has a broad d/P margin, particularly for corresponding to a large size of LCD panel, while satisfying various characteristics sought for STN...
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5837160 |
Chiral CLCPs containing colored monomers
The invention relates to cholesteric liquid-crystalline polymers containing at least one colored comonomer which absorbs light in the visible wavelength region. The colored comonomers can be...
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5827449 |
Liquid-crystal mixtures, process for their preparation and their use
Liquid-crystalline materials having a cholesteric phase with a pitch of less than 400 nm, comprising a) liquid-crystalline organosiloxanes containing dianhydrohexitol derivatives as chiral groups,...
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5820785 |
Fluoroalkylethnyl- and difluoroalkylethynylbenzenes, and their use in liquid-crystal mixtures
Disclosed are derivatives of fluoroalkylethynyl- and difluoroalkylethynylbenzenes of the formula (I) herein. These compounds exhibit useful properties as liquid crystal compounds and are useful in...
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5811028 |
Optically active dihydropyran derivative, and liquid crystal composition, liquid crystal device, and racemic mixture comprising the derivative
A 2H-5,6-optically active dihydropyran derivative represented by the general formula (I) or (I'): ##STR1## wherein Rf represents a fluoroalkyl group having 1 or 2 carbon atoms; a liquid crystal...
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5807499 |
Liquid crystal composition and a liquid crystal display device containing the same
A liquid crystal material for a STN display device having a low viscosity, steep electro-optical response characteristics, and a small temperature dependence of a threshold voltage is provided by a...
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5800733 |
Photo cross-linkable liquid crystal derivatives
The present invention is concerned with photo cross-linkable liquid crystalline compounds in the formula ##STR1## wherein for example: A,B,C,D,E,F independently is pyridine-2,5-diyl,...
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5788880 |
Liquid-crystalline organosiloxanes containing chiral dianhydrohexitol derivatives
The liquid-crystalline organosiloxanes which contain dianhydrohexitol derivatives as chiral groups can be used in optical elements, for decorative purposes and as polarizing colored filters, in...
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5785890 |
Liquid crystal composition, liquid crystal device, and liquid crystal display apparatus using same
A liquid crystal composition comprises at least three compounds represented by formulae (A), (B) and (C), respectively as in Claim 1. The compound of the formula (A) has an indan skeleton, the...
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5779934 |
Fluorine-containing optically active compound, process for preparing the same and liquid crystal mixture and liquid crystal element comprising the same
A fluorine-containing optically active compound represented by the formula (1): ##STR1## wherein R 1 is a saturated or unsaturated C 3 -C 20 alkyl group or a saturated or unsaturated C 3 -C 20 ...
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5779935 |
Ferroelectric liquid crystal mixture
A ferroelectric liquid crystal mixture which does not lower the conventional transition temperature to the ferroelectric phase (60° C. or above), which maintains the Sa phase within a suitable...
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5776365 |
Carboxylate compounds, liquid crystal materials, liquid crystal compositions and liquid crystal elements
There is provided a carboxylic acid compound represented by the following formulae (I) to (IV): ##STR1## a liquid crystal material consisting of the carboxylic acid ester compound, a liquid crystal...
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5776363 |
Compounds having side chains with multiple methyl branches and their use in liquid-crystal mixtures
Compounds of the formula (I) having side chains with multiple methyl branches R 1 (-A 1 -M 1 ) a (-A 2 -M 2 ) b (-A 3 -M 3 ) c (-A 4 )-G(--C * H(CH 3 )--CH 2 ) n --R 2 ...
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5770108 |
Pyrimidine compound and liquid crystal composition and liquid crystal element using the same
A novel pyrimidine compound represented by the following Formulas (1) and (2), a liquid crystal composition containing said compound and a liquid crystal element having excellent characteristics...
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5766507 |
Liquid-crystal resin composition for molding applications having improved fluidity and satisfactory thermal stability
A liquid-crystal polyester resin composition has an improved fluidity and comprises (a) melt-processable polyester (liquid-crystal polyester) having a weight-average molecular weight of about...
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5762824 |
Liquid crystal composition and liquid crystal display element
A guest-host liquid crystal is provided by adding a quinophthalone group pigment or an anthraquinone group pigment as a non-azoic group dichroic pigment, to a host liquid crystal composition...
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5759443 |
Cyclopentyl derivatives
Objects of this invention are cyclopentyl compounds of the general formula ##STR1## wherein k signifies a whole number of 4 to 18; n signifies 0 or 1; Y 1 , Y 2 signify a single bond, --O--,...
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5755995 |
Guest host liquid crystal composition
Described is a guest host liquid crystal composition comprising as a host liquid crystal a liquid crystal composition containing some of the compounds represented by the formulas (I) to (V) which...
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5750050 |
Discotic compounds for use in liquid crystal mixtures
Liquid crystal compounds have been synthesized of general formula (I) and may be mixed with other liquid crystal compounds to give useful liquid crystal mixtures which may then be used in liquid...
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5744057 |
Polymerizable, chiral compounds, and use thereof
A polymerizable, chiral compound of the formula (I): (Z--Y 1 -A-O--CO--O-M-Y 2 ) n X (I) where: A, M, Y 1 and Y 2 , X, n and Z are as defined herein; and which compound is...
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5744058 |
Dienes and liquid-crystalline media
Dienes of the formula I ##STR1## in which n is 0, 1, 2, 3, 4 or 5, r is 1, 2 or 3, s is 1 or 2, ##STR2## is trans-1,4-cyclohexylene or trans-1,3-dioxane-2,5-diyl, ##STR3## is...
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5741921 |
Conjugated polymers containing hetero-spiro atoms and their use as electroluminescence materials
Conjugated polymers comprising recurring units of the formula (I), ##STR1## where the symbols and indices have the following meanings: ψ is an element of the 4th main group of the Periodic Table...
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5736068 |
Triphenylene compounds and preparation of discotic liquid crystalline crosslinked polymers
Novel triphenylene compounds which contain, bonded to the triphenylene framework, at least three ethylenically unsaturated groups or groups carrying oxiranyl or thiiranyl groups, and a process for...
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5733476 |
Mesomorphic compound, liquid crystal composition, liquid crystal device, display apparatus and display method
A mesomorphic compound of the formula (I) having a coumaran skeleton is suitable as a component for a liquid crystal composition providing improved response characteristics. A liquid crystal device...
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5730903 |
Compound and thin film composed of the discotic compound
A thin film comprising a discotic compound having diacetylene groups at the side chain moiety thereof, and a compound represented by formula (1): ##STR1## wherein R 2 represents an alkyl group or...
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5730900 |
Film and process for preparation of the same and liquid crystal display
Disclosed are a film composed of an oriented polymer matrix and a liquid crystalline compound contained therein. The oriented polymer matrix is generally formed by polymerization of a discotic...
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5730898 |
Thermotropic side-chain liquid crystal polymer and FLCD employing the same as an orientation layer
A thermotropic side-chain liquid crystal polymer and a ferroelectric liquid crystal display employing the same as an orientation layer are provided. The thermotropic side-chain liquid crystal can...
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5720898 |
Mesomorphic compound, liquid crystal composition and liquid crystal device
A liquid crystal composition, comprising a main chain-type mesomorphic polymer and a mesomorphic monomer and showing a smectic phase including a plurality of molecular layers, wherein a linkage of...
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5718838 |
Optical compensatory sheet, process for the preparation of the same and liquid crystal display
An optical compensatory sheet is basically composed of a transparent support and an optically anisotropic layer provided thereon. The optically anisotropic layer is a layer of polymer having...
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5707544 |
Chromophore-containing photo cross-linkable liquid crystals
The present invention is concerned with chromophore-containing photo cross-linkable liquid crystalline compounds having the formula ##STR1## wherein A 1 and A 2 each represent a cross-linkable,...
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