Match Document Document Title
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...
5744057 Polymerizable, chiral compounds, and use thereof  
A polymerizable, chiral compound of the formula (I): (Z--Y1 -A-O--CO--O-M-Y2)n X (I)where: A, M, Y1 and Y2, X, n and Z are as defined herein; and which compound is suitable for use in...
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...
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...
5730902 Optically active silacyclohexane compounds, liquid crystal compositions comprising the same and liquid crystal display devices comprising the compositions  
An optically active silacyclohexane compound of the formula (I) ##STR1## wherein R represents an organic residue, X represents --CH2 -- or --O--; Z represents a chiral group having at least one...
5725797 Silacyclohexane compound, a process for producing the same, and a liquid crystal composition comprising the same  
For the purpose of improving the characteristics of a liquid crystal substance, there is provided a silacyclohexane compound represented by the general formula (I): ##STR1## wherein R represents a...
5725796 Liquid-crystal display  
The invention relates to a liquid-crystal display based on a twisted nematic cell and having two substrates provided with electrode layers and alignment layers thereon and, with a frame, forming a...
5720899 Liquid crystalline compound, liquid crystal composition and liquid crystal display element  
A novel liquid crystalline compound having a high elastic constant ratio (K33 /K11) and an improved solubility thereof in other liquid crystal materials, at low temperatures, and a liquid crystal...
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...
5716543 3,4,5-trifluorobenzenes, and their use in liquid-crystal mixtures  
A 3,4,5-trifluorobenzene derivatives of formula (I): ##STR1## in which R1 is a straight-chain or branched alkyl having 1 to 15 carbon atoms in which one or two nonadjacent --CH2 --groups are...
5716542 Liquid crystal compound and liquid crystal composition containing the same  
A liquid crystal compound represented by formula (I) and a liquid crystal composition containing the same. The compound exhibits an antiferroelectric liquid crystal phase and has good...
5709820 Alkenyl cyclohexane derivatives and liquid crystal compositions  
Liquid crystalline alkenyl cyclohexane compounds of formula (I) having a nematic phase over a broad temperature range, a higher elastic constant ratio K33 /K11 and a lower viscosity, liquid...
5709817 Chiral compounds containing a tetrahydropyran ring  
Described herein are chiral compounds of the formula I ##STR1## where R1 is hydrogen or --Y--Z--Y1, R2 is ##STR2## and X is hydrogen, fluorine, chlorine, bromine, iodine, hydroxyl or OR1, where Y...
5707545 Chiral oxiranylmethyl ethers, and their use as dopants in liquid-crystal mixtures  
Novel oxiranylmethyl ethers can advantageously be employed in liquid-crystal mixtures since they have high spontaneous-polarization values and features in their molecular structure which make them...
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 A1 and A2 each represent a cross-linkable,...
5705094 Antiferroelectric liquid crystal composition and liquid crystal display element using the same  
The antiferroelectric liquid crystal composition comprising at least one chiralsmectic liquid crystal compound having a positive specific rotatory power α!D25 and at least one chiralsmectic liquid...
5705093 Thermochromic media  
An improved ink comprising a thermochromic liquid crystalline media comprising at least one optically inactive nematic component and at least one optically active component, the improvement...
5705095 Partially fluorinated benzene derivatives  
Compounds of the formula I ##STR1## in which R1, R2, A1, A2, Z1, Z2, L1, L2, L3, m and n are as defined herein, are suitable as component of liquid-crystalline media.
5702639 Use of complex ligands for ions in ferroelectric liquid-crystal mixtures  
A ferroelectric liquid crystal mixture containing two or more components, at least one of which is a complex ligand for ions, in particular for cations, is particularly suitable for use in...
5702640 High-multiplexed supertwist liquid-crystal display  
The invention relates to improved high-multiplexed supertwist liquid crystal displays in which each pixel is addressed by orthogonal row waver forms, the improvement wherein the nematic liquid...
5700393 Liquid crystalline compounds  
The present invention is concerned with photo cross-linkable liquid crystalline compounds of the general formula ##STR1## wherein A1 and A2 each are a cross-linkable mesogenic residue; and A3 is...
5698134 Electrooptical system  
The invention relates to an electrooptical system which between 2 electrode layers contains a liquid crystal mixture and a further optically transparent polymer medium, in which one of the...
5695681 Liquid-crystalline allenes  
Liquid-crystalline allenes of the formula I ##STR1## where M is a mesogenic group, R1 and R2 are hydrogen or a C-organic radical having 1-8 carbon atoms, R3 is a C-organic radical having 1-30...
5686021 Liquid crystal display device, methods of producing and driving the liquid crystal display device, and liquid crystal composition  
A liquid crystal display device, which containing a liquid crystal in each display element comprising at least two oriented liquid crystal phases including a most-quickly-responding liquid crystal...
5683624 Liquid crystal composition  
A LC material for TN and STN modes having a comparatively high Δn and a low viscosity is provided by a LC composition comprising a first component (formula I-c), a second component (formula II-c)...
5683623 Dioxane derivatives  
Dioxane derivatives for use as components in liquid crystal devices (LCDs) of general formula (A), wherein X is CH or B; R1, R2 are each A1, OA1, OCOA2, or COOA2 ; A1 is a straight or branched...
5681504 Optically active tolanes  
A chiral dopant of the formula ##STR1## wherein ring A is 1,4-phenylene which is optionally substituted with one or more fluorine atoms, chlorine atoms, bromine atoms, cyano groups, or methyl...
5679288 Blend of polyphosphate flame retardant and liquid crystalline additive  
The disclosure teaches a blend of a predominant amount of a polyphosphate flame retardant and an effective amount of a liquid crystalline additive for viscosity reduction and compatibilization...
5679282 Chiral 2,6-difluorobenzene derivatives  
The invention relates to chiral 2,6-difluorobenzene derivatives of the formula I ##STR1## in which MG is a mesogenic group containing no ester groups, or a group which in combination with ##STR2##...
5679285 Vinylene compounds and liquid-crystalline medium  
Vinylene compounds of the formula I ##STR1## in which R, A1, Z1, X, L1, L2 and m have the meaning given in claim 1 are suitable as components of liquid-crystalline media.
5676878 Liquid crystal polymers  
A liquid crystal polymer or copolymer is disclosed of structure (A) where X=CN, COR, CO2 R, CHO, CF3 ; R=branched chain, straight chain or chiral alkyl; .rect-hollow.=any suitable mesogenic group;...
5667721 Liquid crystalline di-1,3-dioxane derivatives  
Liquid crystalline compounds having two dioxane rings, the dipole moments of which are unidirectional. These are compounds of the general formula ##STR1## wherein A and B each independently is...
5667722 Antiferroelectric liquid crystal compound and antiferroelectric liquid crystal composition containing the same  
An antiferroelectric liquid crystal compound represented by the following general formula (I): ##STR1## wherein R1 represents an alkyl group having 6 to 16 carbon atoms; R2 represents a straight...
5665270 Optically active trifluorolactic acid derivative and liquid crystal composition  
An optically active compound derived from a novel trifluorolactic acid, useful as a component of a ferroelectric liquid crystal composition, and a liquid crystal composition. A compound...
5665271 Silacyclohexane compounds, preparation thereof, liquid crystal compositions comprising the same, and liquid crystal devices comprising the compositions  
Silacyclohexane compounds of the following formula (I) or (II) along with intermediate compounds therefor are described ##STR1## wherein R is an organic residue, one of ##STR2## represents a...
5662828 Compound having unsaturated side chain, process for preparing the same, liquid crystalline polymer prepared from the same, liquid crystal mixture and display element  
A compound having an unsaturated side chain represented by the formula: ##STR1## in which A and B are the same and different and represent an aromatic or heterocyclic group or either one of A and...
5662829 Fluorocyclohexene-dioxane derivatives  
Compounds of the following formula are useful as liquid crystals: ##STR1## wherein R is a C1 -C12 alkyl or a C2 -C12 alkenyl; A is a single bond or trans-1,4-cydohexylene; Z1 and Z2 are...
5658489 Diphenylacetylene compound, process for preparing the same and liquid crystal composition and element comprising the same  
A diphenylacetylene compound of the formula [1]: ##STR1## wherein R is a C1 -C12 alkyl group, a C2 -C12 alkenyl group or a C2 -C16 alkoxyalkyl group; X1, X2, X3, X4, Y1, Y2, Y3 and Y4 are...
5658492 Smectic C liquid crystal composition and a liquid crystal display element  
A composition containing a smectic C compound, having a Δε of negative value and enabling to effect a high speed response; a ferroelectric chiral smectic C liquid crystal composition using the...
5653912 Liquid crystal compositions  
Disclosed are liquid crystal compositions each comprising a first component (formula (I)), a second component (formula (II)), a third component (formulae (III) to (V)) and a fourth component...
5653913 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 one CF2 group between CH2 groups in a specific alkoxy alkyl terminal group is suitable as a...
5651918 Optically active 1,3-dioxolane derivatives carrying a mesogenic radical in the 4-position, a process for their preparation and their use as doping agents in liquid-crystal mixtures  
Optically active 1,3-dioxolane derivatives which carry a mesogenic radical in the 4-position and have the general formula (I) ##STR1## are suitable for use as doping agents in liquid-crystal...
5650092 Silacyclohexane compounds, a liquid crystal composition comprising the same and a liquid crystal device comprising the composition  
A silacyclohexane compound of the following formula (I) ##STR1## wherein R is an unsubstituted or substituted organic residue, W is H, F, Cl or methyl, X is CN, F, Cl or an unsubstituted or...
5648021 Phenanthrene derivatives and their use in liquid-crystalline mixtures  
This invention relates to novel phenanthrene derivatives of the formula (I) which are particularly suitable for use in liquid-crystal mixtures. The compounds of formula (I) have a broad range of...
5643495 1,2,2,2-tetrafluoroethyl ethers, and liquid-crystalline medium  
1,2,2,2-Tetrafluoroethyl ethers of the formula I R--(A1 --Z1)m --A2 --Z2 A3 --O--CHF--CF3(I)are suitable as components of liquid-crystalline media wherein R is H, a substituted or unsubstituted...
5641427 Liquid crystal composition, liquid crystal device using the composition liquid crystal apparatus and display method  
A liquid crystal composition includes at least one fluorine-containing mesomorphic compound (a) having a fluorocarbon terminal portion and a hydrocarbon terminal portion, and at least one...
5641430 Silacyclohexane compounds, preparation thereof, liquid crystal compositions comprising the same, and liquid crystal devices comprising the compositions  
A silacyclohexane compound of the following formula (I) or (II) ##STR1## wherein R is an organic residue, ##STR2## represents an unsubstituted or substituted trans-1-sila-1,4-cyclohexylene group...
5641428 Use of optically active 1,3-dioxolane-4-carboxylates as dopes in liquid-crystal mixtures, liquid-crystal mixtures containing these compounds, and novel optically active 1,3-dioxolane-4-carboxylates  
Optically active, mesogenic 1,3-dioxolane-4-carboxylates are suitable as dopes in liquid-crystal mixtures. They result in liquid-crystalline ferroelectric phases having short switching times and...
5641429 Fluorobenzene derivatives and liquid-crystalline medium  
Fluorobenzene derivatives of formula I, ##STR1## in which R an alkenyl radical as further defined in the specification, A1 and A2 are a trans-1,4-cyclohexylene radical, 1,4-phenylene radical or...
5637255 Chiral dioxolanes  
Chiral dopants of the formula ##STR1## in which n represents the number 0 or 1; R3 denotes a group of the general formula ##STR2## A1, A2 and A3, independently of one another, represent...