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6800338 Electro-optical liquid-crystal display  
To provide an electro-optical liquid-crystal displays with low addressing voltages and low to moderate multiplex ratios, in particular STN displays, organic alignment layers of low layer thickness...
6793983 Liquid crystal medium  
The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, characterized in that it comprises one or more compounds of the...
6793985 Liquid crystalline medium and liquid crystal display  
Liquid crystalline media comprising a dielectrically positive component A, comprising compounds of formula I wherein the parameters have the meanings given herein, are suitable for use in liquid...
6790488 Liquid-crystalline medium  
The invention relates to a liquid-crystalline medium based on a mixture of polar compounds having positive dielectric anisotropy, characterized in that it comprises one or more compounds of...
6787201 Liquid crystal composition and liquid crystal light modulating apparatus  
A chiral nematic liquid crystal composition that exhibits a cholesteric phase, said chiral nematic crystal composition comprising 55 wt % to 90 wt % of a nematic liquid crystal composition that...
6783812 Alkyl silane liquid crystal compounds  
Compounds useful as components of LC and FLC compositions which in turn are useful in the manufacture of optical devices. Compounds of this invention have a silane tail, which can contain more...
6761939 Liquid crystalline medium and liquid crystal display  
Liquid crystalline media comprising a dielectrically positive component, component A, containing dielectrically positive compounds, comprising one or more compounds of formula I and one or more...
6761938 Electro-optical liquid-crystal display and liquid-crystal medium  
A liquid-crystalline medium of positive dielectric anisotropy suitable for use in an electro-optical liquid-crystal display having a realignment layer, for realigning the liquid crystals, whose...
6759101 Liquid crystalline materials containing perfluoroalkyl and alkenyl tail groups  
Compounds that are useful as components in liquid crystal compositions, particularly in ferroelectric liquid crystal compositions. Compounds of the invention are rod-like molecules with a...
6759103 Fluorinated cyclopenta&lsqb b&rsqb naphthalenes and their use in liquid-crystal mixtures  
The invention relates to compounds of the formula (I) and also liquid-crystal mixtures comprising these compounds, and their use in liquid-crystal displays: in whichR1 is H, F, CF3, OCF3, OCF2H,...
6753045 TN and STN liquid-crystal displays  
The invention relates to TN and STN liquid-crystal displays and to the novel nematic liquid-crystal mixtures used therein, characterized in that they comprise one or more compounds of the formula...
6746729 Liquid crystal compounds  
Compounds of formula I: wherein the variables are defined as explained in the disclosure. The invention also provides liquid crystalline mixtures and optical or electro-optical devices including...
6746731 Ferroelectric active matrix displays with wide operating temperature range  
The active-matrix display contains a chiral smectic liquid-crystal mixture comprising at least one compound of the formula (I) R1—(A1—M1)a—(A2—M2)b—A3—X—B1—(B2)c—R2 (I).where the symbols are as...
6740256 Chiral swallow-tailed liquid crystal and its fabrication method  
A chiral swallow-tailed liquid crystal is provided. The present chiral swallow-tailed liquid crystal is synthesized from a chiral material. The present chiral swallow-tailed liquid crystal is...
6737124 Liquid crystal compounds having a silane tail with a perfluoroalkyl terminal portion  
Chiral nonracemic, chiral racemic and achiral compounds useful as component of LC compositions which have a silane tail group which is partially fluorinated. The silane tail group comprises a...
6737125 Fluorinated cyclopenta&lsqb a&rsqb naphthalenes and their use in liquid-crystal mixtures  
Compounds of the formula (I), liquid-crystal mixtures comprising these compounds, and their use in liquid-crystal displays: in whichR1 is H, F, CF3, OCF3, OCF2H, OCFH2, an alkyl radical or...
6733690 Laterally substituted curable liquid crystals  
In one embodiment, the invention relates to compounds of the formula (I) wherein G1 and G2 independently represent a polymerisable mesogenic residue, X and Sp are as defined herein and M...
6730242 Glass-forming liquid crystalline compositions and optical devices formed therefrom  
A glass-forming liquid crystal composition comprises a compound having a molecular weight in the range of about 1000 to 5000 grams per mole and having the formula (NEM)x—CYC—(CHI)y wherein CYC is...
6726966 Process for vertical alignment of rod-like liquid crystal molecules  
A process for alignment of rod-like liquid crystal molecules comprises the steps of: forming an orientation layer for vertical alignment on a support; and forming a liquid crystal layer containing...
6727023 Electrolyte composition, electrochemical cell and ionic liquid crystal monomer  
An electrolyte composition comprising a polymer compound formed by polymerizing an ionic liquid crystal monomer containing at least one polymerizable group. Also disclosed are an electrochemical...
6723395 Chiral compounds  
The invention relates to chiral compounds of formula I, to liquid crystal mixtures comprising at least one chiral compound of formula I, to chiral linear or crosslinked liquid crystal polymers...
6712992 Liquid-crystalline composition of matter  
Liquid-crystalline compositions containing, as components, A) at least one compound of the formula IZ1—Y1—A1—Y3—M—Y4—A2—Y2—Z2 (I), where Z1 and Z2 are each a reactive group, Y1 to Y4 are each a...
6703083 Silicon compound, liquid crystal composition and liquid crystal display  
Silicon compounds having a low viscosity and a low threshold voltage and improved mutual solubility, a liquid crystal composition comprising the same and a liquid crystal display using the liquid...
6699533 Stabilized liquid crystal alignment structure with pre-tilt angle and display devices containing the same  
An alignment structure useful in a liquid crystal display device comprising a substrate having disposed thereon an oriented layer of a chromonic liquid crystalline material, wherein the chromonic...
6695979 Liquid crystalline medium and liquid crystal display  
The instant invention relates to liquid crystal media comprising a dielectrically positive component (A), comprising compounds with high values of Δn of formula I and simultaneously a second...
6695978 Mono-, oligo- and polymers of benzo&lsqb b&rsqb thiophene and 2,2′-bisbenzo&lsqb b&rsqb thiophene and their use as charge transport materials  
Conjugated mono-, oligo- and polymers of benzo[b]thiophene and bisbenzo[b]thiophene are useful as semiconductors or charge transport materials in optical, electrooptical or electronic devices...
6696110 Liquid crystalline alkenyl compounds incorporating an heterocyclic five-membered ring  
Liquid crystal mixtures comprising at least one of the compounds of formula (I) containing a heterocyclic five-membered ring and with a carbon-carbon double bond in the termninal group are new....
6692657 Alkenyl compound having a negative &Dgr &egr value, liquid crystal composition, and liquid crystal display device  
Liquid crystalline compounds having a large negative Δ∈ low viscosity, a large K33/K11 value, a small Δ∈/Δ⊥ and mutually excellent solubility even at low temperature, compositions containing at...
6689290 Family of conducting liquid crystals  
A mixture comprising a molecule of formula (I); in which A1, A2, A3, A4, A5 and A6, which may be the same or different, are each N or —CH; Y1, Y2, Y3, Y4, Y5 and Y6, which may be the same or...
6685995 Ester compounds, liquid crystal compositions and liquid crystal display devices  
Liquid crystalline compounds suitable for driving at a low voltage and at a wide temperature range, and suitable for high speed response, liquid crystal compositions comprising the compound, and...
6682661 Electrooptical liquid crystal system  
To improve switching times, especially at low temperatures, one or more reactive liquid crystalline compounds is added to a liquid crystal mixture used in an electroptical system. The...
6676857 Mono-, oligo- and poly-4-fluorothiophenes and their use as charge transport materials  
Mono-, oligo- and polymers comprising one or more identical or different recurring units of formula I —[(Y)a—(D)b—(Z)c]— IwhereinD is a 3-substituted-4-fluorothiophene group of formula II, wherein...
6677003 Liquid-crystalline medium  
A liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, characterized in that it comprises one or more compounds of the formula I and one or more...
6676851 Laterally substituted curable liquid crystals  
In one embodiment, the invention relates to compounds of the formula (I) wherein G1 and G2 independently represent a polymerizable mesogenic residue, and X, Sp, and Q are as defined herein. The...
6673267 Phenylacetylene compound, liquid crystal composition, polymer, optically anisotropic product, and liquid crystal or optical element  
Phenylacetylene compounds are disclosed which are expected to exhibit high refractive index anisotropy, easy to mix with other liquid crystal compounds, has advantageous stability against light,...
6666989 Liquid crystal polymer devices and materials  
Polymeric compounds of general formula (I) where X, X1, X2 are independently straight or branched chain C1-16 alkyl, halogen and H; (a) is a suitable mesogenic group; Z=single covalent bond,...
6660345 Thermochromic liquid crystalline medium  
The invention relates to a thermochromic liquid crystalline medium comprising a liquid crystalline host component and an active component, to a thermochromic ink comprising such a thermochromic...
6660344 Polymerizable liquid crystalline dioxetanes, their preparation and use  
New photopolymerizable liquid crystalline dioxetane compounds are provided having the general formula I: wherein R1 and R2 are independently selected from straight or branched C1-C4 alkyl and...
6649228 Liquid-crystal medium, and electro-optical liquid-crystal display  
The present invention relates to liquid-crystalline media which comprise at least one compound of the formula I and at least one compound of the formula II in which the parameters are as defined...
6649227 Difluorovinyl compound, liquid crystal composition and liquid crystal display  
Provided are liquid crystalline compounds having a wide liquid crystal phase temperature range, low viscosity, a large elastic constant ratio K33/K11 and excellent solubility at low temperature, a...
6645397 Liquid crystal composition, color filter and optical film  
An objective of the present invention is to provide a liquid crystal composition whose orientation undergoes a large change upon irradiation with light, and which also has a large birefringence...
6645401 Conjugated copolymers of dithienothiophene with vinylene or acetylene  
Conjugated copolymers of dithienothiophene with vinylene or acetylene are suitable for use as semiconductors or charge transport materials in optical, electrooptical or electronic devices...
6641871 Liquid-crystal compound, liquid-crystal medium comprising same, and electro-optical liquid-crystal display  
The present invention relates to compounds containing a cyclobutanone group of the formula I where the various parameters are as defined in the text, and to liquid-crystal media which comprise...
6632484 Dialkyne compounds  
Described are dialkyne compounds of the formula I in which n, m, R1, R2, X1, X2, X3, X4, Z1, Z2, A1, A2, Q, Y1 and Y2 are as defined herein and the use of such compounds in liquid-crystal media.
6630076 Liquid crystalline compounds  
A compound of formula (I): wherein MG1 and MG3 each independently represent an optionally-substituted aliphatic group with 1 to 80 C-atoms, in which one or more C-atoms may be replaced by a...
6630210 Pentafluorosulfuranylbenzene derivatives  
The invention relates to pentafluorosulfuranylbenzene derivatives of the formula I in which R1, A1, A2, Z1, L1, L2, L3 and n are as defined herein and to the use thereof in liquid-crystalline media.
6620468 Dioxane derivatives, and liquid-crystalline medium  
The invention relates to novel dioxane derivatives of the formula I R1—(A1—Z1)m—A2—C2F4—A3—(Z2—A4)n—R2 Iin which R1, R2, A1, A2, A3, A4, Z1, Z2, m and n are as defined herein, to their use as...
6620467 Liquid crystal display  
A supertwisted nematic liquid crystal display having twist angle of 180 to 270° C. and comprising: a pair of substrates each having an orientation-controlling layer and a transparent electrodel; a...
6616990 Chiral 1, 3-dioxane compounds  
The present invention relates to chiral 1,3-dioxane compounds and diastereomers thereof of the general formula I where R1, R2 and R3 are as defined in the description, and the use of these...
6616989 Isoxazole derivatives, and their use in liquid-crystalline mixtures  
Isoxazole derivatives of the formula (I) where the symbols and indices have the following meanings, for example:T is X is S or OR1 and R2 are identical or different and are each hydrogen, F, CN or...