SmC Flüssigkristallzusammensetzung und Anzeigeelement

Flüssigkristallzusammensetzung, Flüssigkristallvorrichtung und Flüssigkristallanzeigeapparat

Dibenzofuran- und Dibenzothiophenderivate

Die Erfindung betrifft Verbindungen der Formel Iworin auftretenden Gruppen und Parameter die in Anspruch 1 angegebenen Bedeutungen haben, ihre Herstellung, ihre Verwendung als Komponenten in flüssigkristallinen Medien sowie elektrooptische Anzeigeelemente, die die erfindungsgemäßen flüssigkristallinen Medien enthalten.

VERFAHREN ZUR KONTROLLE DES KEGELTILTWINKELS IN MISCHUNGEN VON SMEKTISCHEN FLÜSSIGKRISTALLVERBINDUNGEN

Liquid-crystalline medium

The invention relates to a liquid-crystalline medium comprising at least one compound of the formula I, R1, R1*, rings A and B, Z1, L1, and L2, a and b are each as defined in claim 1, and to the use thereof for an active matrix display, especially based on the VA, PSA, PS-VA, PALC, FFS, PS-FFS, IPS, IPS effect.

Asymmetric mesogens and a method of manufacture

Asymmetric mesogens for use in an OLED device, wherein the asymmetric mesogen has the structure (I): E1-(B1)n-A-B2-E2 (I) wherein: (B1)n-A-B2 is a chromophore that comprises a conjugated pi-system, A, B1 and B2 each independently comprise an optionally substituted aromatic ring system; E1 and E2 are end groups which terminate the conjugated pi-system of the chromophore; n is 0 or 1; and wherein the asymmetric mesogen does not possess a C2 symmetry axis. Also shown is an OLED device comprising the asymmetric mesogen and a method of manufacturing an OLED.

Liquid crystal medium containing polymerisable compounds

LIQUIDCRYSTALLINE MEDIUM

LIQUIDCRYSTALLINE MEDIUM

ADDITIVE COMPONENTS FOR LIQUIDCRYSTALLINE MATERIALS

CHIRALE BINAPHTHYLSULFATE FOR USE AS LIQUID CRYSTAL MATERIALS

LIQUIDCRYSTALLINE CONNECTIONS

MESOMORPHE CONNECTION, THE SAME CONTAINING LIQUIDCRYSTALLINE COMPOSITION AND THE SAME USING LIQUIDCRYSTALLINE DEVICE.

SMEKTI LIQUIDCRYSTALLINE PHASES.

LIQUIDCRYSTALLINE CYCLOPROPYL ALKYL OR - ALKENYL HETEROCYCLEN, PROCEDURE FOR YOUR PRODUCTION AND YOUR USE IN LIQUID CRYSTALLINE MIXTURES.

FLUORINE BENZENE DERIVATIVES AND LIQUIDCRYSTALLINE MEDIUM

LIQUID CRYSTALLINE COMPOUNDS

Liquid crystalline rylene tetracarboxylic acid derivatives and use thereof

FLUOROBENZOLE DERIVATIVES AND MESOMORPHOUS MEDIUM

Liquid-crystal display

MIXTURES OF PYRAMIDAL COLUMNAR LIQUID CRYSTALS AND PROCEDURE FOR THEIR PREPARATION

Mixtures of pyramidal columnar liquid crystals made up of dodeca-substituted derivatives of macrocyclic tetramers wherein each of the substituents is either linear or branched alkanoyl chain of different lengths and randomly distributed. these mixtures show stable mesophases of the columnar type having a wide temperature range which also includes room temperature.

LIQUIDCRYSTALLINE 2,5-DISUBSTITUIERTE 1,3,4-THIADIAZOLE WITH EXPANDED SMEKTI C-PHASES.

Composition and display device

Liquid crystal display element, liquid crystal composition and compound

Liquid crystal display element

LIQUID CRYSTAL COMPOSITION, LIQUID CRYSTAL DEVICE AND LIQUID CRYSTAL APPARATUS

중합성 화합물, 조성물, 중합체, 광학 이방체, 액정 표시 소자 및 유기 ＥＬ 소자

... 본 발명의 과제는, 광학 특성이 우수한 광학 이방체의 재료로서 적합한 중합성 화합물, 상기 중합성 화합물을 포함하는 조성물, 상기 중합성 화합물을 중합시켜서 얻어진 중합체, 상기 중합체에 의해서 구성되는 광학 이방체, 및 상기 광학 이방체를 구비한 액정 표시 소자의 제공이다.

네마틱 액정 조성물 및 이것을 사용한 액정 표시 소자

... 응답 성능이 우수하며, 또한, 충분한 프리틸트각을 갖고, 잔류 모노머량이 적고, 전압 유지율(VHR)이 낮은 것 등에 기인한 배향 불량이나 표시 불량과 같은 문제가 없거나, 혹은 극히 적은 PSA형 또는 PSVA형 액정 표시 소자를 제조하기 위한 중합성 화합물을 포함하는 액정 조성물을 제공하고, 이것을 사용한 액정 표시 소자를 제공한다. 본 발명의 액정 조성물은, 굴절률이방성(Δn) 및 네마틱상-등방성 액체상 전이 온도(Tni)를 저하시키지 않으며, 고체상-네마틱상 전이 온도(Tcn)를 상승시키지 않고, 점도(η)를 충분히 작고, 회전 점성(γ1)이 충분히 작고, 탄성 정수(K33)가 큰 액정 조성물이고, 이것을 사용한 액정 표시 소자는 프리틸트각이 충분히 얻어지며, 전압 유지율(VHR)이 높고, 고속 응답이기 때문에, 배향 불량이나 소부와 같은 표시 불량이 없거나 또는 억제된, 표시 품위가 우수한 응답 속도가 빠른 액정 표시 소자가 얻어진다.

Liquid-crystalline medium comprising stabiliser

LIQUID CRYSTAL COMPOUND HAVING ETHANE BOND

Provided are: a compound represented by general formula (1); a liquid crystal composition which contains this compound; and a liquid crystal display element which uses this liquid crystal composition. A liquid crystal composition, which exhibits high Tni, low viscosity (η), large ∆n and high miscibility in liquid crystal compositions and has chemically high stability at the same time, is able to be obtained by using a compound represented by general formula (1) as a component of the liquid crystal composition. Consequently, the compound is very useful as a constituent component of a liquid crystal composition for liquid crystal display elements that are required to have a fast response.

LIQUID CRYSTAL COMPOUNDS

La présente invention concerne d'une part un composé représenté par la formule générale (I), mais également des mélanges de cristaux liquides, des films et des dispositifs électrooptiques comprenant le composé. Dans cette formule générale, G1¿ et G2¿ représentent indépendamment une fonction mésogène polymérisable. X est un groupe -CH¿2-, -O-, -CO-, -COO-, -OOC-, -CONR'-, -OCOO- ou -OCONR'. Sp est un groupe -(CH¿2)¿p- où p est un entier de 1 à 18 et où un ou deux groupes -CH¿2- non adjacents sont éventuellement remplacés par -CH=CH-, ou dans lequel un ou deux groupes -CH¿2- sont éventuellement remplacés par un ou deux groupes -O-, -CO-, -COO-, -OOC-, -CONR'-, -OCOO-, ou -OCONR' sous la réserve que, d'abord le groupe intercalaire ne contienne pas deux hétéroatomes adjacents, et qu'ensuite, lorsque X est -CH¿2-, p peut également avoir la valeur 0. M est un groupe achiral représenté par la formule (II) dans laquelle A et B sont indépendamment un groupe hétérocyclique ou isocyclique de 5 ou ...

Liquid crystal composition, liquid crystal device and liquid crystal apparatus

A liquid crystal composition contains a mesomorphic compound represented by the following formula (A): (A) wherein R1 and R2 independently denote a linear or branched alkyl group having 1-18 carbon atoms; X1 denotes a single bond, -O-, -CO-O- or -O-CO-; and A1 denotes and a mesomorphic compound represented by the following formula (B): (B) wherein R3 denotes a linear or branched alkyl group having 1-18 carbon atoms; X2 and X3 independently denote a single bond, -O-, -CO-O- or -O-CO-; m is an integer of 3-16; and A2 denotes or The liquid crystal composition may preferably be formulated as a chiral smectic liquid crystal composition. The liquid crystal composition is useful in providing a liquid crystal device using the liquid crystal composition with a good alignment characteristic, a good drive characteristic, and a high and stable contrast ratio.

Optically isotropic liquid crystal medium and optical device

A liquid crystal medium having stability to heat, light and so forth, a wide temperature range of a liquid crystal phase, a large refractive index anisotropy and a large dielectric anisotropy and an optically isotropic liquid crystal phase is described. A liquid crystal composition is characterized by exhibiting the optically isotropic liquid crystal phase and containing achiral component T containing at least one compound selected from the group of compounds represented by formula (1) as a first component, and a chiral agent: wherein, for example, R1 is alkyl having 1 to 20 carbons, L1, L2, L3, L4, L5 and L6 are independently hydrogen or fluorine, and X1 is halogen.

ALIGNMENT LAYER COMPOSITION, LIQUID CRYSTAL DISPLAY INCLUDING THE ALIGNMENT LAYER COMPOSITION, AND MANUFACTURING METHOD OF THE LIQUID CRYSTAL DISPLAY

An alignment layer composition including a copolymer of a dianhydride compound and a diamine compound, wherein the copolymer includes a repeating unit represented by Formula 1: wherein each of Ar1 and Ar2 is independently a substituted or unsubstituted aromatic group comprising 6 to 30 carbon atoms, X is an electron donating group, and is an ester group, wherein “*” indicates a point of attachment to the aromatic groups Ar1 and Ar2.

Optical recording material

A novel photochromic liquid crystal comprising a diarylethene compound having both photochromic properties and liquid crystallinity. This compound is a photochromic diarylethene compound having a mesogen group in each of the two aryl groups. The photochromic liquid crystal provides a large change in birefringence by photoisomerization or phase transition, and has high durability against repeated changes in birefringence. A side-chain polymer liquid crystal containing the above photochromic liquid crystal is useful as an optical recording material. Such an optical recording material is capable of performing light modulation by irradiation with light near Tc thereof, and is applicable to photo operator devices, optical memories, and the like. Further, the optical recording material is useful as a material for a recording layer of an optical recording medium such as an optical disk or an optical memory card.

Method for the conversion of fluorinated aromatic compounds using electrophiles

Flüssigkristallanzeige

MATRIX-FLUESSIGKRISTALLANZEIGE

THIAZOL- UND THIADIAZOL-DERIVATE ENTHALTENDE MEDIEN MIT SMEKTISCHER FLUESSIGKRISTALLINER PHASE

Chiral and/or achiral compounds containing at least one structural element from the group thiazol-2,4-diyl, thiazol-2,5-diyl, 1,2,4-thiadiazol-2,5-diyl, 1,2,4-thiadiazol-3,5-diyl, are used as components of media with a smectic liquid-crystal phase.

Nematische Flüssigkristallzusammensetzung und Flüssigkristallanzeigevorrichtung unter einschliessen derselben

Es werden eine Flüssigkristallzusammensetzung, welche eine Verbindung, dargestellt durch allgemeine Formel (I-IV):und eine Verbindung, dargestellt durch allgemeine Formel (I):beinhaltet, und eine Flüssigkristallanzeigevorrichtung, welche die Flüssigkristallzusammensetzung einschließt, bereitgestellt. Die Flüssigkristallzusammensetzung gemäß der vorliegenden Erfindung hat eine ausreichend niedrige Viskosität (η), eine ausreichend niedrige Rotationsviskosität (γ1), eine hohe elastische Konstante (K33), ein hohes Spannungs-Halte-Verhältnis nach UV-Exposition (VHR(UV)) und einen großen Absolutwert der negativen dielektrischen Anisotropie (Δε) ohne Verringerung der Berechnungsindexanisotropie (Δn) oder der nematische Phase-isotrope flüssige Phase Übergangstemperatur (Tni). Die Anzeigevorrichtung, welche die Flüssigkristallzusammensetzung einschließt, hat eine schnelle Ansprechzeit und eine gute Anzeigequalität mit verringerten oder keinen Anzeigefehlern.

Flüssigkristalline Verbindungen, dieselben enthaltende Flüssigkristall-Zusammensetzungen und Verwendung davon.

1-FLUORISOCHINOLINDERIVATE UND IHRE VERWENDUNG IN FLÜSSIGKRISTALLINEN MISCHUNGEN

Electroluminescent materials

Liquid crystal compounds with branched or cyclic end groups

Electroluminescent materials

DISUBSTITUTED ETHANES

FLUORINE BENZENE DERIVATIVES AND LIQUIDCRYSTALLINE MEDIUM.

LIQUID CRYSTAL CONNECTIONS, LIQUID CRYSTAL MEDIUM AND LIQUID CRYSTAL DISPLAY

LIQUIDCRYSTALLINE MEDIUM AND LIQUID CRYSTAL DISPLAY

LUMINISZIERENDE COMPOSITIONS

ANELLIERTE NAPHTHA LINE

LIQUIDCRYSTALLINE MEDIUM AND LIQUID CRYSTAL DISPLAY

MESOMORPHI CONNECTION, IT ABSTENTIONS LIQUID CRYSTAL COMPOSITION AND IT ABSTENTION LIQUID CRYSTAL DEVICE.

OPTICALLY ACTIVE ONES, IN 4-STELLUNG a MESOGENEN a REMAINDER CARRYING 1,3-DIOXOLAN-DERIVATE, a PROCEDURE FOR YOUR PRODUCTION AND YOUR USE AS DOPANTS IN LIQUID CRYSTAL MIXTURES.

MESOMORPHIC BENZOXAZOLE COMPOUNDS, LIQUID CRYSTAL COMPOSITIONCONTAINING SAME AND LIQUID CRYSTAL DEVICE USING SAME

Heteroaryl compounds and uses thereof

Described herein are compounds of formula (I), and pharmaceutically acceptable salts, solvates, hydrates, isotopically labeled derivatives and radiolabeled derivative thereof, and pharmaceutical compositions thereof. Also provided are methods and kits involving the inventive compounds or compositions for detecting and imaging Tau aggregates in the brain for detection of Alzheimer's disease (AD) in a subject.

FLUOROBENZENE DERIVATIVES AND LIQUID-CRYSTALLINE MEDIUM

Fluorobenzene derivatives of the formula I, in which R is H, an alkyl or alkenyl radical of 1 to 15 carbon atoms which is unsubstituted or monosubstituted by CN or CF3 or at least monosubstituted by halogen, it being possible for one or more CH2 groups in these radicals also to be replaced, in each case independently of one another, by -O-, -S-, , -CO-, -CO-O-, -O-CO- or -O-CO-O- in such a manner that O atoms are not linked directly to one another, A1 and A2,in each case independently of one another, are a (a) trans-1,4-cyclohexylene radical, in which one or more non-adjacent CH2 groups can also be replaced by -O- and/or -S-, (b) 1,4-phenylene radical, in which one or two CH groups can also be replaced by N, (c) radical from the group comprising 1,4-cyclo- hexenylene, 1,4-bicyclo(2.2.2)octylene, piperidine-1,4-diyl, naphthalene-2,6-diyl, decahydronaphthalene-2,6-diyl and 1,2,3,4tetrahydronaphthalene-2,6-diyl, it being possible for the radicals (a) and (b) to be substituted by CN or fluorine ...

MESOMORPHIC COMPOUND, LIQUID CRYSTALCOMPOSITION CONTAINING SAME AND LIQUID CRYSTAL DEVICE USING SAME

A mesomorphic compound represented by the following formula (I): (1), wherein R1 and R2 respectively denote an alkyl group having 1 - 16 carbon atoms capable of having a substituent; X1 and X2 respectively denote a single bond, -O-, , , or ; and A1 and A2 respectively denote , , , , , , , or wherein X3 and X4 respectively denote hydrogen, fluorine, chlorine, bromine, -CH3, -CN or -CF3; and Z denotes -O- or -S-.

Composition and liquid crystal display device using the same

Polymerizable compound, composition, polymer, optically anisotropic body, liquid crystal display element, and organic EL element

네마틱 액정 조성물 및 이를 사용한 액정 표시 소자

... 일반식(I-Ⅳ)으로 표시되는 화합물을 함유하고, 일반식(I)으로 표시되는 화합물을 함유하는 액정 조성물 및 이를 사용한 액정 표시 소자를 제공한다. 본 발명의 액정 조성물은, 굴절율 이방성(Δn) 및 네마틱상-등방성 액체상 전이 온도(Tni)를 저하시키지 않고, 점도(η)가 충분히 작으며, 회전 점성(γ1)이 충분히 작고, 탄성 상수(K33)가 크며, UV 조사 후의 전압 유지율(VHR(UV))이 높고, 절대값이 큰 음의 유전율 이방성(Δε)을 가지며, 또한 이를 사용한 표시 소자는 표시 불량이 없는 또는 억제된, 표시 품위가 우수하고, 빠른 응답 속도를 실현할 수 있다.

Liquid crystal composition

Composition and liquid crystal display element using same

Polymerisable liquid-crystalline medium and polymer film with flat optical dispersion

Liquid crystal composition and liquid crystal display element

Liquid-crystalline medium

The invention relates to a liquid-crystalline medium which comprises at least one compound of the formula I, in which R1, R1*, rings A and B, Z1, L1, L2, a and b have the meanings indicated in Claim 1, and to the use thereof for an active-matrix display, in particular based on the VA, PSA, PS-VA, PALC, FFS, PS-FFS, IPS or PS-IPS effect.

Polymerisable compounds and the use thereof in liquid-crystal media and liquid-crystal displays

The present invention relates to polymerisable compounds, to liquid-crystalline media comprising the compounds, in particular liquid-crystal (LC) media and LC displays having a polymer-stabilised blue phase, and LC media for LC displays of the PS or PSA (''polymer sustained'' or ''poly-mer sustained alignment'') type.

Liquid-crystal display

The present invention relates to polymerisable compounds, to processes and intermediates for the preparation thereof, and to the use thereof for optical, electro-optical and electronic purposes, in particular in liquid-crystal (LC) media and LC displays, especially in LC displays of the PS (polymer stabilised) or PSA (polymer sustained alignment) type.

Liquid-crystalline medium and liquid-crystal display

MEDIA CONTAINING DERIVATIVES OF THIAZOLE AND THIADIAZOLE, WITH SMECTIC LIQUID-CRYSTAL PHASE

Chiral and/or achiral compounds containing at least one structural element from the group thiazol-2,4-diyl, thiazol-2,5-diyl, 1,2,4-thiadiazol-2,5-diyl, 1,2,4-thiadiazol-3,5-diyl, are used as components of media with a smectic liquid-crystal phase.

Liquid crystal device and liquid crystal apparatus

A liquid crystal device is constituted by a pair of substrates each having thereon an electrode for voltage application, a chiral smectic liquid crystal composition disposed between the substrates so as to assume at least two optically stable states. At least one of the substrates is provided with an alignment control layer having a thickness of at most 200 Å or comprising polyimide. The substrates have been subjected to different aligning treatments at their opposite faces each contacting the composition. The composition comprises at least three fluorine-containing mesomorphic compounds each comprising a fluorocarbon terminal portion and a hydrocarbon terminal portion, the terminal portions being connected with a central core, the compounds having smectic mesophase or latent smectic mesophase; said at least three mesomorphic compounds comprising a compound having a fluorocarbon terminal portion containing one catenary ether oxygen atom, a compound having a fluorocarbon terminal portion ...

Liquid crystal device for gradational display

A liquid crystal device for gradational display, comprising: a pair of substrates each provided with an electrode, and a liquid crystal layer comprising a chiral smectic liquid crystal disposed between the substrates; the pair of substrates each having thereon alignment control layer provided with a uniaxial alignment axis, wherein aid liquid crystal layer comprises a striped region and a non-striped region where (1) the striped region and the non-striped region each assume a homogeneous alignment state, (2) the striped region extends in a direction perpendicular to the direction of the uniaxial alignment axis, and (3) each of liquid crystal molecules within the striped region and the non-striped region show bistability; and the liquid crystal molecules within the striped region have a threshold voltage, for switching between two stable states, different from that given by the liquid crystal molecules within the on-striped region. The above two regions (striped and non-striped region) having ...

Liquid crystalline compound, liquid crystalline composition and retardation film

To provide a liquid crystalline composition, which can be obtained by mixing a plurality of liquid crystalline compositions each of which can exhibit different liquid crystal phases from one another, being capable of exhibiting a biaxial liquid crystal phase, a liquid crystalline composition contains a liquid crystalline composition R which exhibits a liquid crystal phase having a positive birefringence; and a liquid crystalline composition D which exhibits a liquid crystal phase having a negative birefringence, in which the liquid crystalline composition R comprises a compound having a rectangular plate-like shape.

Alignment layer composition, liquid crystal display including the same, and method of manufacturing the liquid crystal display

An alignment layer composition including a copolymer of a dianhydride compound and a diamine compound, the copolymer including a repeating unit represented by chemical formula (1); and a repeating unit represented by chemical formula (2): wherein R1 is a tetravalent organic group derived from an alicyclic dianhydride or an aromatic dianhydride, and wherein R1 includes a phenyl ester group.

Liquid crystal medium containing thiophene derivatives

The present invention relates to liquid-crystalline media (LC media) comprising thiophene derivatives and to liquid-crystal displays (LC displays) containing these LC media. The media have high optical anisotropy and preferably have a content of thiophene derivatives of 25% by weight or more.

Liquid crystal composition and liquid crystal display device

A nematic liquid crystal composition has negative dielectric anisotropy and contains at least one polar compound selected from the group of compounds represented by formula (1) as a first additive, and the liquid crystal display device includes the composition. In formula (1), R1is hydrogen, halogen, alkyl having 1 to 12 carbons or the like; R2is a group represented by —OH, —OR0, —NH2, —NHR0or —N(R0)2, in which R0is alkyl having 1 to 5 carbons; ring A and ring B are independently 1,4-cyclohexylene, 1,4-phenylene or the like; Z1is a single bond or the like; Sp1and Sp2are independently a single bond, alkylene having 1 to 7 carbons or the like; and a is 0 to 4.

Thermotropic adducts from non-mesogenic species bound by hydrogen bonds and method for their preparation

Thermotropic adducts corresponding to the general formula: in which: denotes a group forming at least two hydrogen bonds with the additional functional group denoted by the symbol ; A and B denote appropriate substitutions carried by the functional groups and , which contribute in combination with the structure of the central unit - to inducing the thermotropic property; p and q = 1 or 2. The central unit - is derived especially from the complementary pairs: cytosine/isocytosine, guanine/cytosine, adenine/uracil, 2,6-dialkanamidopyridine/uracil and 2,6-dialkanamidopyridine/thymine. The substitutents A and B are, in particular, long aliphatic hydrocarbon chains which may contain one or more heteroatoms, which are branched and have at least 28 atoms.

VERFAHREN ZUR KONTROLLE DES SCHICHTABSTANDES IN SMEKTISCHE, FLÜSSIGKRISTALLINE VERBINDUNGEN ENTHALTENDEN GEMISCHEN

Flüssigkristalline Verbindungen

Verbindungen der Formel I,worin Y-O- oder -CH- bedeutet, und die Gruppen R, Lbis Lund Xdie in Anspruch 1 angegebenen Bedeutungen haben. Ein Verfahren zu ihrer Herstellung, sowie flüssigkristalline Medien enthaltend mindestens eine Verbindung der Formel I und elektrooptische Anzeigen enthaltend ein solches flüssigkristallines Medium. Die Verbindungen der Formel I umfassen als Strukturelement eine Kombination aus einem 1,4-substituierten Cyclohexenring neben einem Dioxan- oder Tetrahydropyranring und einer substituierten Biphenylgruppe.

CUMARIN- UND CHINOLINON-DERIVATE ZUR HERSTELLUNG VON ORIENTIERUNGSSCHICHTEN FÜR FLÜSSIGKRISTALLE

PYRIMIDIN VERBINDUNGEN

FLÜSSIGKRISTALLINES MEDIUM

Die Erfindung betrifft ein flüssigkristallines Medium, das mindestens eine Verbindung der Formel I, (I) und eine oder mehrere aus der Gruppe der Verbindungen der Formeln IIA, IIB und IIC, (IIA) (IIB) (IIC) ausgewählte Verbindungen enthält, bei denen die auftretenden Gruppen und Parameter die in Anspruch 1 angegebenen Bedeutungen besitzen, und seine Verwendung für eine Aktivmatrixanzeige, insbesondere basierend auf dem VA-, PSA-, PA-VA-, SS-VA-, SA-VA-, PS-VA-, PALC-, IPS-, PS-IPS-, UB-FFS-, U-IPS-, FFS- oder PS-FFS-Effekt.

SMEKTISCHE FLUESSIGKRISTALLVERBINDUNG.

Flüssigkristallines Medium

Die Erfindung betrifft ein flüssigkristallines Medium, dadurch gekennzeichnet, dass es eine oder mehrere Verbindungen der Formel I $F1 enthält, worin R⁰, L¹, n, A und B die in Anspruch 1 angegebenen Bedeutungen haben, ferner neue Verbindungen der Formel I, Verfahren zu ihrer Herstellung, ihre Verwendung in elektronischen und elektrooptischen Vorrichtungen, insbesondere in FK-Anzeigen, sowie diese enthaltende FK-Anzeigen.

1-Fluor-6,7-dihydro-5H-isochinolin-8-on-Derivate und ihre Verwendung in flüssigkristallinen Mischungen

... 1-fluor-6,7-dihydro-5H-isoquinoline-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>, in which the symbols and indices have the following meanings: group B is (II); R<1>, R<2> are, for example, alkyl groups with 1-20 C atoms; M<1>, M<2>, M<3>, M<4>, M<5> and M<6> are, for example, -O-, -CO-O-, -O-CO- or a single bond; A<1>, A<2>, A<3> and A<4> are, for example, 1,4-phenylene, pyrimidine-2,5-diyl or trans-1,4-cyclohexylene; and a, b, c, d, e and f are 0 or 1, a condition being that the sum of b, c, d and e is 0, 1 or 2. Compounds of formula (I) in the pure state are colourless and as a rule form liquid crystalline mesophases in a temperature range favourable to electro-optical applications. The compounds are chemically and thermally stable and light stable.

ADDITIVKOMPONENTEN FÜR FLÜSSIGKRISTALLINE MATERIALIEN

1-Fluor-5,6,7,8-tetrahydroisochinolin-Derivate und ihre Verwendung in flüssigkristallinen Mischungen

... 1-Fluor-5,6,7,8-tetrahydroisoquinoline derivatives of 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> in which the symbols and indices have following meanings: group B is (II); R<1>, R<2> are, for example, alkyl groups with 1-20 C atoms; M<1>, M<2>, M<3>, M<4>, M<5> and M<6> are, for example, -O-, -CO-O, -O-CO- or a single bond; A<1>, A<2>, A<3> and A<4> are, for example, 1,4-phenylene, pyrimidine-2,5-diyl or trans-1,4-cyclohexylene; and a, b, c, d, e and f are 0 or 1, a condition being that the sum of b, c, d and e is 0, 1 or 2. Compounds of formula (I) in the pure state are colourless and as a rule form liquid crystalline mesophases in a temperature range favourable to electro-optical applications. The compounds are chemically and thermally stable and light stable.

CHROMANDERIVAT UND ES ENTHALTENDE FLÜSSIGKRISTALLINE ZUSAMMENSETZUNG

LIQUID CRYSTAL 1-FLUOROPHENYL-2-CYCLOHEXYL-ETHANES

Polymer networks

BIPHENYLYL ETHANES

SMEKTI LIQUID CRYSTAL CONNECTION.

THIAZOL AND THIADIAZOL DERIVATIVES CONTAINING MEDIA WITH SMEKTI LIQUIDCRYSTALLINE PHASE.

BIPHENYLYL AETHANE AND YOUR USE IN LIQUID CRYSTAL MATERIALS AND - DEVICES.

OPTICALLY ACTIVE ONE 2,5-DIPHENYLPYRIDINE.

LIQUID CRYSTAL COMPOSITION AND INDICATOR, WHICH SELBIGE USES

LIQUIDCRYSTALLINE CYCLOHEXANCARBONSAEUREPHENYLPYRIMIDINESTER WITH SMEKTI PHASE IN LIQUID CRYSTAL MIXTURES AND YOUR USE.

CHROMANDERIVAT AND IT ABSTENTION LIQUIDCRYSTALLINE COMPOSITION

MESOMORPHIC COMPOUND, LIQUID CRYSTAL COMPOSITION CONTAINING SAME AND LIQUID CRYSTAL DEVICE USING SAME

Novel liquid-crystalline compound and organic semiconductor device containing the compound

Disclosed is a visible light-transmissive liquid-crystalline compound having good hole and electron-transport characteristics and useful as an organic semiconductor material. The compound is represented by a formula (1): wherein R independently represents hydrogen, or alkyl having from 1 to 24 carbon atoms, and any —CH 2 — in the alkyl may be replaced by —O—, —S—, —CO— or —SiH 2 —, any —(CH 2 ) 2 — may be replaced by —CH≡CH— or —C═C—, and any hydrogen may be replaced by halogen; Ar represents naphthylene, anthrylene, phenanthrylene, or phenylene; and every hydrogen in phenylene is replaced by halogen, and any hydrogen in naphthylene, anthrylene and phenanthrylene may be replaced by halogen.

Hierarchical chromonic structures

A method of making a chromonic structure comprises (a) preparing a first aqueous mixture comprising (i) a continuous water-soluble polymer phase and (ii) a discontinuous chromonic phase comprising a chromonic material, to form chromonic nanoparticles; (b) non-covalently crosslinking the resulting chromonic nanoparticles with a multivalent cation salt; (c) dispersing the resulting crosslinked chromonic nanoparticles in a water-soluble polymer phase to form a chromonic nanoparticle dispersion; and (d) preparing a second aqueous mixture comprising (i) the chromonic nanoparticle dispersion and (ii) a continuous chromonic phase comprising a chromonic material.

Liquid crystal composition and liquid crystal display device

A subject is to provide a liquid crystal composition that has a negative dielectric anisotropy and contains a specific 3-ring compound having a large optical anisotropy as a first component and a compound having a large negative dielectric anisotropy and containing a methyleneoxy group or pyran ring as a second component, and may contain a specific compound having a small viscosity as a third component and a specific compound having a large negative dielectric anisotropy as a fourth component, respectively, and a liquid crystal display device that contains the composition.

Liquid crystal composition and liquid crystal display device

Provided is a liquid crystal composition satisfying at least one of characteristics such as high maximum temperature of a nematic phase, low minimum temperature of the nematic phase, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy, large specific resistance, high stability to ultraviolet light and high stability to heat, or having a suitable balance regarding at least two of the characteristics. Also provided is an AM device having a short response time, a large voltage holding ratio, a large contrast ratio, a long service life and so forth. The liquid crystal composition contains a specific compound having a polymerizable group as a first component, a specific compound having a large negative dielectric anisotropy and a low minimum temperature as a second component, or a specific compound having a small viscosity or a large maximum temperature as a third component, and a liquid crystal display device contains the composition.

Semiconducting polymers

The invention relates to novel polymers containing repeating units based on benzodithiophene or derivatives thereof, monomers and methods for their preparation, their use as semiconductors in organic electronic (OE) devices, especially in organic photovoltaic (OPV) devices, and to OE and OPV devices comprising these polymers.

Heterocyclic compound, light-emitting element, light-emitting device, electronic device, lighting device, and organic compound

Provided is a novel heterocyclic compound which can be used in a light-emitting layer of a light-emitting element as a host material in which a light-emitting material is dispersed, i.e., a heterocyclic compound represented by a general formula (G1). Any one of R1 to R10 represents a substituent represented by a general formula (G1-1); another one of R1 to R10 represents hydrogen, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, or a substituent represented by a general formula (G1-2); and the others separately represent hydrogen, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, or a substituted or unsubstituted biphenyl group.

SWITCH ELEMENT COMPRISING A LIQUID-CRYSTALLINE MEDIUM

The present invention relates to a switch element, which is thermo-responsive and which switches between a less transmissive state for radiant energy and a more transmissive state for radiant energy, and which comprises a liquid-crystalline medium. The invention furthermore relates to the use of the switch element for the regulation of radiant energy flow between interior spaces and the environment and for the regulation of the temperature of interior spaces. The invention furthermore relates to a liquid-crystalline medium, characterised in that it comprises 5-60% of a compound of the formula (I), in particular for use in the switch elements according to the invention. 8. Switch element according to claim 1 , characterised in that X is on each occurrence claim 1 , identically or differently claim 1 , selected from F and Cl.9. Switch element according to claim 1 , characterised in that the total concentration of the compounds of the formula (I) is between 5 and 60%.10. Switch element according to claim 2 , characterised in that the total concentration of the compounds of the formulas (I) and (II) is between 40 and 100%.11. Switch element according to claim 1 , characterized in that no electrical wiring claim 1 , circuitry and/or switching network is present.13. Use of a liquid-crystalline medium according to in a thermoresponsive optical switch element.14. Composite system comprising a liquid-crystalline medium according to and a polymer claim 12 , preferably a microporous polymer.15. A method for the regulation of the flow of radiant energy between an interior space and the environment claim 1 , which comprises regulating the flow with a switch element according to . The present invention relates to a switch element, which is thermo-responsive and which switches between a less transmissive state for radiant energy and a more transmissive state for radiant energy, and which comprises a liquid-crystalline medium. The invention furthermore relates to the use of the ...

COMPOUND HAVING BRANCHED ALKYL OR BRANCHED ALKENYL, OPTICALLY ISOTROPIC LIQUID CRYSTAL MEDIUM AND OPTICAL ELEMENT

A liquid crystal compound with branched alkyl or branched alkenyl as represented by formula (1), a liquid crystal medium (a liquid crystal composition or a polymer/liquid crystal composite material) containing the liquid crystal compound, and an optical element containing the liquid crystal medium are described. 2. The compound of claim 1 , wherein in formula (1) claim 1 , arbitrary one of the rings A claim 1 , A claim 1 , Aand Ais 1 claim 1 ,4-phenylene in which one or two hydrogens are replaced by fluorine.3. The compound of claim 1 , wherein in formula (1) claim 1 , the ring Ais 1 claim 1 ,4-phenylene in which one or two hydrogens are replaced by fluorine.4. The compound of claim 1 , wherein in formula (1) claim 1 , Ris Calkyl branching at a carbon of 2-position thereof.5. The compound of claim 1 , wherein in formula (1) claim 1 , Ris Calkenyl branching at a carbon of 2-position thereof.6. The compound of claim 1 , wherein in formula (1) claim 1 , Ris Calkyl branching at a carbon of 3-position thereof.7. The compound of claim 1 , wherein Ris Calkenyl branching at a carbon of 3-position thereof.8. The compound of claim 1 , wherein in formula (1) claim 1 , Ris Calkyl branching at a carbon of 4-position thereof.9. The compound of claim 1 , wherein in formula (1) claim 1 , Ris Calkenyl branching at a carbon of 4-position thereof.10. The compound of claim 1 , wherein in formula (1) claim 1 , Ris Calkyl branching at a carbon of 1-position thereof.11. The compound of claim 1 , wherein in formula (1) claim 1 , Ris Calkenyl branching at a carbon of 1-position thereof.12. The compound of claim 1 , wherein in formula (1) claim 1 , m=1 claim 1 , n=1 and p=0.13. The compound of claim 1 , wherein in formula (1) claim 1 , m=1 claim 1 , n=1 and p=1.14. The compound of claim 1 , wherein in formula (1) claim 1 , m=1 claim 1 , n=1 claim 1 , p=0 claim 1 , and arbitrary one of Z claim 1 , Z claim 1 , Zand Zis —COO— or —CFO—.15. The compound of claim 1 , wherein in formula (1) claim 1 ...

Liquid crystal composition and liquid crystal display device

The invention provides a liquid crystal composition satisfying at least one of characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of the nematic phase, a small viscosity, a large optical anisotropy, a large negative dielectric anisotropy, a large elastic constant, a large specific resistance, a high stability to ultraviolet light and to heat, or having a suitable balance regarding at least two of the characteristics, and the AM device having a short response time, a large voltage holding ratio, a large contrast ratio, a long service life and so forth The liquid crystal composition having a negative dielectric anisotropy may contain a specific three ring compound having a high maximum temperature and a high elastic constant, as the first component, a specific compound having a large negative dielectric anisotropy as the second component, a specific compound having a small viscosity as the third component, and a specific compound having a large negative dielectric anisotropy as the fourth component. The liquid crystal display device contains the compositions.

LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY DEVICE

The liquid crystal composition includes a specific two-ring compound having a large optical anisotropy and a small viscosity as a first component, a specific three-ring compound having a high maximum temperature and a large dielectric anisotropy as a second component, and a specific compound having a large dielectric anisotropy as a third component, and may include a specific compound having a small viscosity as a fourth component, a specific three-ring compound having a large optical anisotropy and a large dielectric anisotropy as a fifth component, and a specific compound having a large dielectric anisotropy as a sixth component, and the liquid crystal display device contains this composition. 3. The liquid crystal composition according to claim 2 , wherein the second component is at least one compound selected from the group of compounds represented by formula (2-1).4. The liquid crystal composition according to claim 2 , wherein the second component is at least one compound selected from the group of compounds represented by formula (2-4).5. (canceled)6. The liquid crystal composition according to claim 2 , wherein the third component is at least one compound selected from the group of compounds represented by formula (3-3).7. The liquid crystal composition according to claim 1 , wherein the ratio of the first component is in the range of 5% by weight to 50% by weight claim 1 , the ratio of the second component is in the range of 10% by weight to 90% by weight claim 1 , and the ratio of the third component is in the range of 5% by weight to 85% by weight based on the total weight of the liquid crystal composition.10. The liquid crystal composition according to claim 9 , wherein the fourth component is at least one compound selected from the group of compounds represented by formula (4-7).11. (canceled)12. The liquid crystal composition according to claim 8 , wherein the ratio of the fourth component is in the range of 5% by weight to 85% by weight based on the ...

LIQUID CRYSTAL COMPOUND, LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY DEVICE

To provide a novel liquid crystal compound having general physical properties necessary for the compound, namely, stability to heat, light and so forth, a wide temperature range of a liquid crystal phase, a high clearing point, a good compatibility with other compounds, a large refractive index anisotropy, a large dielectric anisotropy and a small viscosity. The liquid crystal compound is provided as compound (1): 2. The compound according to claim 1 , wherein claim 1 , in formula (1) claim 1 , Ris alkyl having 1 to 20 carbons claim 1 , alkenyl having 2 to 20 carbons claim 1 , alkoxy having 1 to 19 carbons claim 1 , alkenyloxy having 2 to 19 carbons or alkylthio having 1 to 19 carbons; and Xis hydrogen claim 1 , halogen claim 1 , —C≡N claim 1 , —N═C═S claim 1 , —SF claim 1 , alkyl having 1 to 10 carbons claim 1 , alkenyl having 2 to 10 carbons claim 1 , alkoxy having 1 to 9 carbons claim 1 , alkenyloxy having 2 to 9 carbons claim 1 , thioalkyl having 1 to 9 carbons claim 1 , —CHF claim 1 , —CHF claim 1 , —CF claim 1 , —(CH)—F claim 1 , —CFCHF claim 1 , —CFCHF claim 1 , —CHCF claim 1 , —CFCF claim 1 , —(CH)—F claim 1 , —(CF)—F claim 1 , —CFCHFCF claim 1 , —CHFCFCF claim 1 , —(CH)—F claim 1 , —(CF)—F claim 1 , —(CH)—F claim 1 , —(CF)—F claim 1 , —OCHF claim 1 , —OCHF claim 1 , —OCF claim 1 , —O—(CH)—F claim 1 , —OCFCHF claim 1 , —OCFCHF claim 1 , —OCHCF claim 1 , —O—(CH)—F claim 1 , —O—(CF)—F claim 1 , —OCFCHFCF claim 1 , —OCHFCFCF claim 1 , —O(CH)—F claim 1 , —O—(CF)—F claim 1 , —O—(CH)—F claim 1 , —O—(CF)—F claim 1 , —CH═CHF claim 1 , —CH═CF claim 1 , —CF═CHF claim 1 , —CH═CHCHF claim 1 , —CH═CHCF claim 1 , —(CH)—CH═CF claim 1 , —CHCH═CHCFor —CH═CHCFCF.3. The compound according to claim 1 , wherein claim 1 , in formula (1) claim 1 , Ris alkyl having 1 to 12 carbons claim 1 , alkenyl having 2 to 12 carbons claim 1 , alkoxy having 1 to 12 carbons or alkenyloxy having 2 to 12 carbons; Zand Zare independently a single bond claim 1 , —CHCH— or —CH═CH—; and Xis fluorine ...

POLYMER-STABILISED LIQUID-CRYSTAL MEDIA AND DISPLAYS

The present invention relates to liquid-crystalline media and display devices comprising polymerisable compounds, to the use of the polymerisable compounds for optical, electro-optical and electronic purposes, in particular in liquid-crystal (LC) media and LC displays having a polymer-stabilised blue phase, and in LC media for LC displays of the PS or PSA (“polymer sustained” or “polymer sustained alignment”) type. The polymerisable compounds comprise a ring system which is functionalised by three or more polymerisable groups, each connected via an optional spacer group. 2. Liquid-crystalline medium according to claim 1 , characterised in that the ring A in formula I denotes cyclohexane or benzene.3. Liquid-crystalline medium according to characterised in that claim 1 , in formula I claim 1 ,{'sub': 2', '3, 'sup': 1', '1, 'P denotes a radical of the formula CH═CW—COO—, in which Wis H, F, Cl, CN, CF, phenyl or alkyl having 1 to 5 C atoms.'}4. Liquid-crystalline medium according to claim 1 , characterised in that the number of polymerisable groups in formula I is 3 claim 1 , 4 or 5.5. Liquid-crystalline medium according to claim 1 , characterised in that it has a blue phase at at least one temperature.6. Liquid-crystalline medium according to claim 1 , characterised in that it has a blue phase at least in the range from 20 to 25° C. after stabilisation of the blue phase by polymerisation.9. Process for the preparation of an LC medium claim 1 , characterised in that one or more liquid-crystalline compounds are mixed with one or more polymerisable compounds of the formula I according to and optionally with additives and optionally polymerised.10. Electro-optical liquid-crystal display which operates in a polymer-stabilised blue phase or is of the PS/PSA type claim 1 , characterised in that it contains a compound of the formula I or a polymer comprising one or more polymerised compounds of the formula I according to .11. Process for the production of an electro-optical ...

LIQUID CRYSTAL MEDIUM CONTAINING THIOPHENE DERIVATIVES

The present invention relates to liquid-crystalline media (LC media) comprising thiophene derivatives and to liquid-crystal displays (LC displays) containing these LC media. The media have high optical anisotropy and preferably have a content of thiophene derivatives of 25% by weight or more. 3. LC medium according to claim 1 , characterised in that it has a content of 25% by weight or more of one or more compounds of the formula I or one or more compounds selected from the formulae I1 to I53.4. LC medium according to claim 1 , characterised in that{'sup': 1', '2, 'sub': '2', 'Rand Rindependently denote a straight-chain or branched alkyl having 1 to 7 C atoms, in which, in addition, one or more non-adjacent CHgroups may each be replaced, independently of one another, by —CH═CH—, —O—, —CO—, —CO—O—, —O—CO— or —O—CO—O— in such a way that O atoms are not linked directly to one another.'}5. LC medium according to claim 1 , characterised in that it has a nematic phase at room temperature.10. Process for the preparation of an LC medium according to claim 1 , characterised in that one or more compounds of the formula I are mixed with one or more compounds of the formulae XXVI or with further liquid-crystalline compounds and/or additives.11. Use of an LC medium according to for electro-optical purposes.12. Electro-optical device containing an LC medium according to .13. Device according to claim 12 , characterised in that the device is a display device or a switchable lens. The present invention relates to liquid-crystalline media (LC media) comprising thiophene derivatives and to liquid-crystal displays (LC displays) containing these LC media. The media have high optical anisotropy and preferably have a content of thiophene derivatives of 25% by weight or more.Liquid crystals are used principally as dielectrics in display devices, since the optical properties of such substances can be modified by an applied voltage. Electro-optical devices based on liquid crystals are ...

OPTICALLY ISOTROPIC LIQUID CRYSTAL MEDIUM AND OPTICAL DEVICE

A liquid crystal composition is described, which exhibits an optically isotropic liquid crystal phase and contains an achiral component T and a chiral dopant. The achiral component T contains, as its first component, at least one compound selected from compounds represented by formula (1) in an amount of 32 wt % to 85 wt %, 3. The liquid crystal composition of claim 2 , wherein the first component of the achiral component T is at least one compound selected from the group consisting of compounds represented by the formula (1-2).5. The liquid crystal composition of claim 1 , wherein a ratio of the first component of the achiral component T relative to the total weight of the achiral component T is in a range of 30 wt % to 70 wt %.8. The liquid crystal composition of claim 7 , wherein the second component of the achiral component T is at least one compound selected from the group consisting of compounds represented by formula (2-1-1-2).9. The liquid crystal composition of claim 7 , wherein the second component of the achiral component T is at least one compound selected from the group consisting of compounds represented by formula (2-1-4-3).10. The liquid crystal composition of claim 7 , wherein the second component of the achiral component T is a mixture of at least one compound selected from the group consisting of compounds represented by formula (2-1-1-2) and at least one compound selected from the group consisting of compounds represented by formula (2-1-4-3).11. The liquid crystal composition of claim 6 , wherein a ratio of the second component of the achiral component T relative to the total weight of the achiral component T is in a range of 5 wt % to 70 wt %.14. The liquid crystal composition of claim 12 , wherein in formula (3) claim 12 , Rhas a straight chain.15. The liquid crystal composition of claim 13 , wherein the third component of the achiral component T is at least one compound selected from the group consisting of compounds represented by formula (3 ...

ORGANIC SEMICONDUCTOR PARTICULATE MATERIAL, ORGANIC SEMICONDUCTOR THIN-FILM, DISPERSION LIQUID FOR FORMING ORGANIC SEMICONDUCTOR FILM, METHOD FOR PRODUCING ORGANIC SEMICONDUCTOR THIN-FILM, AND ORGANIC THIN-FILM TRANSISTOR

Provided are a fine-particulate organic semiconductor material, a thin organic semiconductor film and an organic transistor. The fine-particulate organic semiconductor material is in a form of fine particles and is usable as an organic semiconductor material. The fine particles are fine thermotropic liquid crystal particles that undergo a phase transition into a liquid crystal state when heated to a temperature of from 50° C. to 350° C. The fine-particulate organic semiconductor material can easily and uniformly form the thin organic semiconductor film over a large area by a film printing process or a dispersion coating process. The thin organic semiconductor film has high electron mobility and high ON/OFF value. 1. A fine-particulate organic semiconductor material , which is in a form of fine particles and is usable as an organic semiconductor material , wherein the fine particles are fine thermotropic liquid crystal particles that undergo a phase transition into a liquid crystal state when heated to a temperature of from 50° C. to 350° C.4. The fine-particulate organic semiconductor material according to claim 1 , wherein the phase transition into the liquid crystal state takes place at a temperature of from 100° C. to 250° C.5. The fine-particulate organic semiconductor material according to claim 1 , wherein the fine particles have an average particle size of from 10 nm to 10 μm.6. A thin organic semiconductor film formed from the fine-particulate organic semiconductor material according to .7. A dispersion for forming an organic semiconductor film claim 1 , which is useful in forming the organic semiconductor film and comprises an organic solvent and the fine-particulate organic semiconductor material according to as dispersed in the organic solvent.8. The dispersion according to claim 7 , wherein the organic solvent has a specific inductive capacity of from 2 to 60.9. A process for producing a thin organic semiconductor film claim 7 , which comprises coating ...

Switch element comprising a liquid-crystalline medium

The present invention relates to a switch element, which is thermoresponsive and which switches between a less transmissive state for radiant energy and a more transmissive state for radiant energy, and which comprises a liquid-crystalline medium. The invention furthermore relates to the use of the switch element for the regulation of radiant energy flow between interior spaces and the environment and for the regulation of the temperature of interior spaces. The invention furthermore relates to a liquid-crystalline medium, characterised in that it comprises 5-95% of a compound of the formula (I), in particular for use in the switch elements according to the invention.

Liquid-crystalline media

The invention relates to liquid-crystalline media which can be used, in particular, for electro-optical displays having active-matrix addressing based on the ECB effect and for IPS (in-plane switching) displays or FFS (fringe field switching) displays.

LIQUID-CRYSTALLINE MEDIUM

The invention relates to a liquid-crystalline medium, characterised in that it contains one or more compounds of the formula IA, 4. Liquid-crystalline medium according to claim 1 , characterised in that Xin formula IA denotes F claim 1 , OCF claim 1 , OCHF claim 1 , CF claim 1 , OCHF claim 1 , OCHFCF claim 1 , OCFCHFCF claim 1 , CF═CF claim 1 , CH═CF claim 1 , OCF═CFor OCH═CF.14. Liquid-crystalline medium according to claim 1 , characterised in that it contains at least two compounds of the formula IA and at least two compounds of the formula IIA.15. Liquid-crystalline medium according to claim 1 , characterised in that it contains in total ≧20% by weight of compounds of the formula IA and compounds of the formula IIB claim 1 , based on the mixture.16. Liquid-crystalline medium according to claim 1 , characterised in that it contains in total ≧20% by weight of compounds of the formula IA and compounds of the formula IIC claim 1 , based on the mixture.17. Liquid-crystalline medium according to claim 1 , characterised in that it has a dielectric anisotropy (Δ∈) of >1.5 at 20° C. and 1 kHz.18. Liquid-crystalline medium according to claim 1 , characterised in that it additionally contains one or more additive(s) selected from the group of the UV stabilisers claim 1 , dopants and antioxidants.19. Liquid-crystalline medium according to claim 1 , characterised in that it additionally contains one or more polymerisable compounds.20. Process for the preparation of a liquid-crystalline medium according to claim 1 , characterised in that one or more compounds of the formula IA and one or more compounds selected from the group of compounds of the formula IIA claim 1 , IIB and IIC as defined in claim 1 , are mixed with one or more mesogenic compounds and optionally also with one or more additives and/or at least one polymerisable compound.21. Use of a liquid-crystalline medium according to for electro-optical purposes.22. Use of the liquid-crystalline medium according to in ...

LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY DEVICE

A liquid crystal composition has a negative dielectric anisotropy, and contains a specific bicyclic compound having a large optical anisotropy and a small viscosity as a first component and a specific compound having a large maximum temperature and a large dielectric anisotropy as a second component, and may contain a specific compound having a small viscosity as a third component, a specific compound having a large dielectric anisotropy as a fourth component and a specific compound having a large dielectric anisotropy as a fifth component, and a liquid crystal display device includes the composition. 34-. (canceled)5. The liquid crystal composition according to claim 1 , wherein a ratio of the first component is in the range of 5% by weight to 40% by weight claim 1 , and a ratio of the second component is in the range of 5% by weight to 95% by weight claim 1 , based on the total weight of the liquid crystal composition.89-. (canceled)10. The liquid crystal composition according to claim 6 , wherein a ratio of the third component is in the range of 10% by weight to 90% by weight based on the total weight of the liquid crystal composition.13. The liquid crystal composition according to claim 12 , wherein the fourth component is at least one compound selected from the group of compounds represented by formula (4-1).14. The liquid crystal composition according to claim 12 , wherein the fourth component is at least one compound selected from the group of compounds represented by formula (4-4).15. The liquid crystal composition according to claim 12 , wherein the fourth component is at least one compound selected from the group of compounds represented by formula (4-6).16. The liquid crystal composition according to claim 11 , wherein a ratio of the fourth component is in the range of 5% by weight to 80% by weight based on the total weight of the liquid crystal composition.19. (canceled)20. The liquid crystal composition according to claim 17 , wherein a ratio of the ...

Switch element comprising a liquid-crystalline medium

The present invention relates to a switch element, which is thermoresponsive and which switches between a less transmissive state for radiant energy and a more transmissive state for radiant energy, and which comprises a liquid-crystalline medium. The invention furthermore relates to the use of the switch element for the regulation of radiant energy flow between interior spaces and the environment and for the regulation of the temperature of interior spaces. The invention furthermore relates to a liquid-crystalline medium, characterised in that it comprises a compound of the formula (I), in particular for use in the switch elements according to the invention.

LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY DEVICE

To provide a liquid crystal composition satisfying at least one of characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of the nematic phase, a small viscosity, a suitable optical anisotropy, a large negative dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to heat, and so forth. To provide an AM device having a short response time, a large voltage holding ratio, a large contrast ratio, a long service life and so forth. The liquid crystal composition contains a specific compound having a polymerizable group as a first component and a specific compound having a large negative dielectric anisotropy and a low minimum temperature as a second component, and may contain a specific compound having a small viscosity or a large maximum temperature as a third component, and a liquid crystal display device includes the composition. 2. The liquid crystal composition according to claim 1 , wherein the first component is at least one compound selected from the group of compounds represented by formula (1) claim 1 , and R claim 1 , R claim 1 , Rand Rare independently hydrogen claim 1 , hydroxy claim 1 , alkyl having 1 to 12 carbons claim 1 , alkoxy having 1 to 12 carbons claim 1 , alkenyl having 2 to 12 carbons claim 1 , alkenyl having 2 to 12 carbons in which arbitrary hydrogen is replaced by fluorine claim 1 , acrylate claim 1 , methacrylate claim 1 , vinyloxy claim 1 , propenyl ether claim 1 , oxirane claim 1 , oxetane or vinyl ketone claim 1 , and at least one of R claim 1 , R claim 1 , Rand Ris acrylate claim 1 , methacrylate claim 1 , vinyloxy claim 1 , propenyl ether claim 1 , oxirane claim 1 , oxetane or vinyl ketone.58-. (canceled)9. The liquid crystal composition according to claim 1 , wherein a ratio of the first component is in the range of 0.05 part by weight to 10 parts by weight based on 100 parts by weight of the liquid crystal composition excluding the first ...

CHIRAL COMPOUNDS, CHOLESTERIC AND FERROELECTRIC LIQUID CRYSTAL COMPOSITIONS COMPRISING THESE CHIRAL COMPOUNDS, AND LIQUID CRYSTAL DISPLAYS COMPRISING THESE LIQUID CRYSTAL COMPOSITIONS

Chiral liquid crystal compounds of the general formula (1): 2. The chiral liquid crystal compounds of wherein:{'br': None, 'sub': 1', '2', 'n', 'm', '2', 'k', 'l', '2', 'p, 'R=Y—(CH)—(O)—(CH)—(O)—(CH)—;'}n assumes values from 3 to 7K denotes a single bondA=1,{'sub': '1-5', 'Kdenote, independently from each other, a benzene, or pyridine, or pyrimidine ring;'}{'sub': 1-20', '3', '2', '5', '3', '3', '3, 'Xdenote, independently from each other, one of the —CH, —CH, —O—CH, —CF, and —O—CFgroups, or one of the atoms H, F, and Cl.'}3. The chiral liquid crystal compounds of wherein{'br': None, 'sub': 1', '2', 'n', '1', 'm', '2', 'k', 'l', '2', '2', 'p', '3, 'R=Y—(CH)—CHY—(O)—(CH)—(O)—CHY—(CH)—Y;'}whereK denotes a single bond,{'sub': '1', 'A=1, Aassumes a value of 0 or 1;'}{'sub': '1-5', 'Kdenote, independently from each other, a benzene, or pyridine, or pyrimidine ring, and'}{'sub': 1-20', '3', '2', '5', '3', '3', '3, 'Xdenote —CH, or —CH, or —O—CH, or —CF, or —O—CFgroups, or an atom H, or F, or Cl.'}4. The chiral liquid crystal compounds of wherein{'br': None, 'sub': 1', '2', 'n', 'm', '2', 'k', 'l', '2', 'p, 'R═Y—(CH)—(O)—(CH)—(O)—(CH)—; or'}{'br': None, 'sub': 2', 'n', '1', 'm', '2', 'k', 'l', '2', '2', 'p', '3, 'Y—(CH)—CHY—(O)—(CH)—(O)—CHY—(CH)—Y;'}whereK denotes one of benzene, pyridine, pyrimidine, cyclobutane, cyclopentane, cycloheptane, and cyclooctane rings;{'sub': '1', 'where A=1, A=0;'}{'sub': 1-4', '1', '3, 'Kdenote benzene, or pyridine, or pyrimidine ring, except the case when Kand Kare benzene rings;'}{'sub': 1-16', '3', '2', '5', '3', '3', '3, 'Xdenote, independently from each other, one of the groups —CH, —CH, —O—CH, —CF, and —O—CF, or one of the atoms H, F, and Cl.'}5. The chiral liquid crystal compounds of wherein{'br': None, 'sub': 1', '2', 'n', 'm', '2', 'k', 'l', '2', 'p, 'R=Y—(CH)—(O)—(CH)—(O)—(CH)—;'}wheren assumes values of from 3 to 7K denotes a single bond{'sub': '1', 'A=1, A=0;'}{'sub': '1-5', 'Kdenote, independently from each other, a benzene, or ...

LIQUID CRYSTALLINE MEDIUM

The invention relates to a liquid-crystalline medium based on a mixture of polar compounds having negative dielectric anisotropy, which contains at least one compound of the formula I 112-. (canceled)19. A liquid crystalline medium according to claim 17 , wherein the proportion of the compound of formula III in the liquid crystalline medium as a whole is 3 to 50% by weight.20. A liquid crystalline medium according to claim 13 , wherein the proportion of the compounds of formula I in the liquid crystalline medium as a whole is 1 to 30% by weight.21. A liquid crystalline medium according to claim 13 , wherein the proportion of the compound of formula IIj and/or IIk in the liquid crystalline medium as a whole is at least 30% by weight.28. A liquid crystalline medium according to claim 13 , further comprising one or more UV absorbers claim 13 , nanoparticles claim 13 , nanobeeds claim 13 , microparticles claim 13 , antioxidants and/or free-radical scavengers.33. A method for achieving an electrooptical effect claim 13 , comprising addressing a liquid crystalline medium according to .34. An electrooptical liquid crystal display containing a liquid crystalline medium according to .35. An electrooptical display according to claim 34 , which has active matrix addressing and is based on the ECB claim 34 , VA claim 34 , ASV claim 34 , PS-VA claim 34 , MVA claim 34 , FFS or PALC mode. The invention relates to a liquid-crystalline medium based on a mixture of polar compounds having negative dielectric anisotropy, which contains at least one compound of the formula I and at least one compound of formula IIwhereinMedia of this type are to be used, in particular, for electro-optical displays with active-matrix addressing based on the ECB effect, for IPS (in plane switching) and for FFS (fringe field switching) displays.The principle of electrically controlled birefringence, the ECB (electrically controlled birefringence) effect or DAP (deformation of aligned phases) effect was ...

LIQUID CRYSTAL DISPLAY ELEMENT

Provided is a liquid crystal display element having an improved response speed by using a liquid crystal compound having a high K, while neither improving nor deteriorating all the characteristics as a liquid crystal display element. 1. A liquid crystal display element having:a first substrate;a second substrate; anda liquid crystal composition layer interposed between the first substrate and the second substrate,{'sub': '33', 'wherein at least one of the first substrate and the second substrate has an electrode that controls the liquid crystal composition layer and the bend elastic constant Kof at least one kind of liquid crystal compounds in the liquid crystal composition constituting the liquid crystal composition layer is 20 pN or more.'}3. The liquid crystal display element according to claim 1 , wherein the liquid crystal display element has a plurality of pixels and each of the pixels can be independently controlled claim 1 , the pixel has a pair of a pixel electrode and a common electrode claim 1 , the first substrate has a common electrode claim 1 , the second substrate has a pixel electrode claim 1 , and the long axis of the liquid crystal molecule in the liquid crystal composition layer is substantially vertically or substantially horizontally aligned on the surface of the substrate.4. The liquid crystal display element according to claim 1 , wherein the liquid crystal display element has a plurality of pixels and each of the pixels can be independently controlled claim 1 , the pixel has a pair of a pixel electrode and a common electrode claim 1 , the both electrodes are provided on at least one substrate of the first substrate and the second substrate claim 1 , and the long axis of the liquid crystal molecule in the liquid crystal composition layer is substantially horizontally aligned on the surface of the substrate.5. The liquid crystal display element according to claim 1 , wherein the liquid crystal composition constituting the liquid crystal ...

COMPOUND HAVING DIHYDROPHENANTHRENE, LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY DEVICE

To provide a liquid crystal compound having a large negative dielectric anisotropy (Δ∈), and having at least one of characteristics such as a high stability to heat, light and so forth, a high clearing point, a suitable refractive index anisotropy (Δn) and an excellent compatibility with other liquid crystal compounds, and an intermediate thereof. A solution is a compound represented by formula (1): 2. The compound according to claim 1 , wherein claim 1 , in formula (1) claim 1 , Rand Rare independently alkyl having 1 to 10 carbons claim 1 , alkenyl having 2 to 10 carbons or alkoxy having 1 to 9 carbons; and{'sup': 1', '2', '3, 'ring A, ring Aand ring Aare independently 1,4-cyclohexylene,'}1,4-cyclohexenylene, 1,4-phenylene, tetrahydropyran-2,5-diyl, 1,3-dioxane-2,5-diyl, 2-fluoro-1,4-phenylene, 3-fluoro-1,4-phenylene or 2,3-difluoro-1,4-phenylene.3. The compound according to claim 2 , wherein claim 2 , in formula (1) claim 2 , ring A claim 2 , ring Aand ring Aare independently 1 claim 2 ,4-cyclohexylene claim 2 , 1 claim 2 ,4-cyclohexenylene claim 2 , 1 claim 2 ,4-phenylene claim 2 , 2-fluoro-1 claim 2 ,4-phenylene claim 2 , 3-fluoro-1 claim 2 ,4-phenylene or 2 claim 2 ,3-difluoro-1 claim 2 ,4-phenylene.4. The compound according to claim 1 , wherein claim 1 , in formula (1) claim 1 , a sum of l claim 1 , m and n is 0 claim 1 , 1 or 2.6. The compound according to claim 5 , wherein claim 5 , in formula (1) claim 5 , Zis a single bond claim 5 , —(CH)— claim 5 , —CHO— claim 5 , —COO— or —CFO—.7. The compound according to claim 6 , wherein claim 6 , in formula (1-1) claim 6 , ring Ais 1 claim 6 ,4-cyclohexylene claim 6 , 1 claim 6 ,4-cyclohexenylene claim 6 , 1 claim 6 ,4-phenylene or 2 claim 6 ,3-difluoro-1 claim 6 ,4-phenylene.8. A liquid crystal composition containing at least one compound according to .11. The liquid crystal composition according to claim 9 , further containing at least one compound selected from the group of compounds represented by formulas (8) ...

LIQUID CRYSTALLINE MEDIUM

The invention relates to a liquid-crystalline medium based on a mixture of polar compounds having negative dielectric anisotropy, which contains at least one compound of the formula I 112-. (canceled)15. A liquid crystalline medium according to claim 14 , comprising one or more compounds of formula Ia.19. A liquid crystalline medium according to claim 17 , wherein the proportion of the compound of formula III in the liquid crystalline medium as a whole is 3 to 50% by weight.20. A liquid crystalline medium according to claim 13 , wherein the proportion of the compounds of formula I in the liquid crystalline medium as a whole is 1 to 30% by weight.27. A liquid crystalline medium according to claim 13 , further comprising one or more UV absorbers claim 13 , nanoparticles claim 13 , nanobeeds claim 13 , microparticles claim 13 , antioxidants and/or free-radical scavengers.30. A liquid crystalline medium according to claim 29 , wherein the proportion of the compound of formula II in the liquid crystalline medium as a whole is at least 30% by weight.34. A method for achieving an electrooptical effect claim 13 , comprising addressing a liquid crystalline medium according to .35. An electrooptical liquid crystal display containing a liquid crystalline medium according to .36. An electrooptical display according to claim 35 , which has active matrix addressing and is based on the ECB claim 35 , VA claim 35 , ASV claim 35 , PS-VA claim 35 , MVA claim 35 , FFS or PALC mode. The invention relates to a liquid-crystalline medium based on a mixture of polar compounds having negative dielectric anisotropy, which contains at least one compound of the formula I and at least one compound of formula IIwhereinMedia of this type are to be used, in particular, for electro-optical displays with active-matrix addressing based on the ECB effect, for IPS (in plane switching) and for FFS (fringe field switching) displays.The principle of electrically controlled birefringence, the ECB ( ...

Liquid-crystalline medium

The invention relates to liquid-crystalline media comprising at least one compound of the formula I, in which R 0 , R 0 * and ring A have the meanings indicated in Claim 1, and to electro-optical liquid-crystal displays, in particular for TN-TFT, OCB, IPS, PS-IPS, FFS, PS-FFS and positive VA applications.

LIQUID-CRYSTALLINE MEDIUM AND ELECTRO-OPTICAL DISPLAY

The invention relates to a liquid-crystalline medium having a nematic phase and negative dielectric anisotropy which comprises a) a compound of the formula (I) b) one or more compounds of the formula (II) and c) one or more compounds selected from the group of the compounds of the formulae (III-1) to (III-4), in which the parameters have the meanings indicated in Claim , to the use thereof in an electro-optical display, particularly in an active-matrix display based on the VA, ECB, PALC, FFS or IPS effect, displays of this type contain a liquid-crystalline medium of this type, and the use of the compound of the formula I for the stabilisation of a liquid-crystalline medium that comprises one or more compounds of the formula II and one or more compounds selected from the group of the compounds of the formulae (III-1) to (III-4). 2. Medium according to , characterised in that it comprises one or more compounds of the formula II , as indicated in , in which Rvinyl.3. Medium according to , characterised in that it comprises a compound of the formula II , as indicated in , in which Rdenotes n-propyl and Rdenotes vinyl.4. Medium according to , characterised in that the total concentration of the compounds of the formula II , as indicated in in the medium as a whole is 25% or more to 45% or less.7. Medium according to , characterised in that it comprises one or more compounds of the formula III-4 , as indicated in .8. Medium according to claim 1 , characterised in that it additionally comprises one or more chiral compounds.9. Electro-optical display or electro-optical component characterised in that it contains a liquid-crystalline medium according to .10. Display according to claim 9 , characterised in that it is based on the VA or ECB effect.11. Display according to claim 9 , characterised in that it comprises an active-matrix addressing device.12. (canceled)13. Process for the preparation of a liquid-crystalline medium claim 9 , characterised in that the compounds of ...

LIQUID-CRYSTALLINE MEDIUM

The invention relates to a liquid-crystalline medium, characterised in that it comprises one or more compounds of the formula IA, 12. Liquid-crystalline medium according to claim 1 , characterised in that it comprises at least two compounds of the formula IA and at least two compounds of the formula IB.13. Liquid-crystalline medium according to claim 1 , characterised in that it comprises in total ≧25% by weight of compounds of the formula IA and compounds of the formula IB claim 1 , based on the mixture.14. Liquid-crystalline medium according to claim 1 , characterised in that it comprises in total ≧30% by weight of compounds of the formula IA and compounds of the formula IB claim 1 , based on the mixture.15. Liquid-crystalline medium according to claim 1 , characterised in that it additionally comprises one or more additive(s) selected from the group of the UV stabilisers claim 1 , dopants and antioxidants.16. Liquid-crystalline medium according to claim 1 , characterised in that it additionally comprises one or more polymerisable compounds.17. Process for the preparation of a liquid-crystalline medium according to claim 1 , characterised in that one or more compounds of the formula IA and one or more compounds of the formula IB claim 1 , are mixed with one or more compounds of formula II and/or one or more compounds of formula III and optionally also with one or more additives and/or at least one polymerisable compound.18. A method which comprises using a liquid-crystalline medium according to for electro-optical purposes.19. A method according to which comprises using said liquid-crystalline medium in shutter glasses claim 18 , for 3D applications claim 18 , in TN claim 18 , PS-TN claim 18 , STN claim 18 , TN-TFT claim 18 , OCB claim 18 , IPS claim 18 , PS-IPS claim 18 , FFS claim 18 , PS-FFS and PS-VA-IPS displays.20. Electro-optical liquid-crystal display containing a liquid-crystalline medium according to . The present invention relates to a liquid- ...

LIQUID-CRYSTALLINE MEDIUM AND ELECTRO-OPTICAL DISPLAY

The invention relates to a liquid-crystalline medium having a nematic phase and negative dielectric anisotropy which comprises 2. Medium according to claim 1 , characterised in that it comprises one or more compounds of the formula II claim 1 , in which Rdenotes vinyl.3. Medium according to claim 2 , characterised in that it comprises a compound of the formula II claim 2 , in which Rdenotes n-propyl and Rdenotes vinyl.4. Medium according to claim 3 , characterised in that the total concentration of the compounds of the formula II claim 3 , in the medium as a whole is 25% or more to 45% or less.7. Medium according to claim 1 , characterised in that it comprises one or more compounds of the formula III.8. Medium according to claim 1 , characterised in that it additionally comprises one or more chiral compounds.9. Electro-optical display or electro-optical component claim 1 , characterised in that it contains a liquid-crystalline medium according to .10. Display according to claim 9 , characterised in that it is based on the VA or ECB effect.11. Display according to claim 9 , characterised in that it comprises an active-matrix addressing device.12. Use of a liquid-crystalline medium according to in an electro-optical display or in an electro-optical component.13. Process for the preparation of a liquid-crystalline medium claim 1 , characterised in that the compounds of the formula I according to are mixed with one or more compounds of the formula II according to and one or more compounds selected from the group of the compounds of the formulae III-1 to III-4. The present invention relates to liquid-crystal media and to the use thereof in liquid-crystal displays, and to these liquid-crystal displays, particularly liquid-crystal displays which use the ECB (electrically controlled birefringence) effect with dielectrically negative liquid crystals in a homeotropic initial alignment. The liquid-crystal media according to the invention are distinguished by a particularly ...

Liquid crystal display deviceand methods for manufacturing the same

A liquid crystal display device includes a first substrate having a first alignment base layer disposed thereon, a second substrate facing the first substrate and having a second alignment base layer disposed thereon, and ferroelectric liquid crystals vertically aligned between the first substrate and the second substrate. The first alignment controller combines with the first alignment base layer and includes a side chain longer than that of the first alignment base layer. The second alignment controller combines with the second alignment base layer and includes a side chain longer than that of the second alignment base layer. The ferroelectric liquid crystals are pre-tilted by the first alignment controller and the second alignment controller, and as a result, transmittance may be improved. Because the ferroelectric liquid crystals are pre-tilted, a cell gap may be decreased and high-speed driving may be possible at a low voltage.

COMPOUND HAVING FOUR POLYMERIZABLE GROUPS, LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY DEVICE

A compound represented by formula (1), a liquid crystal composition, a liquid crystal display device are described. 4. The compound according to claim 3 , wherein in formulas (1-1) to (1-6) claim 3 , s is 0.5. The compound according to claim 3 , wherein in formulas (1-1) to (1-6) claim 3 , Z claim 3 , Z claim 3 , Zand Zare independently a single bond; s is 0 or 1; Lis a single bond; Lis a single bond claim 3 , —COO— claim 3 , —CH═CH— claim 3 , —CH═CH—COO— claim 3 , —C(CH)—CH—COO— claim 3 , —CH═C(CH)—COO— claim 3 , —C(CH)═C(CH)—COO— claim 3 , —C≡C— claim 3 , —COCH═CH— claim 3 , —C(CH)═C(CH)— claim 3 , —CH═CH—CHO— claim 3 , —CH═CH—OCH— or —CO—; and P is CH═CH—COO— or CH═C(CH)—COO—.6. The compound according to claim 3 , wherein in formulas (1-1) to (1-6) claim 3 , Z claim 3 , Z claim 3 , Zand Zare independently —COO— claim 3 , —CHO— claim 3 , —CHCHO— or —CH═CHO—; s is 0 or 1; Lis a single bond; Lis a single bond claim 3 , —COO— claim 3 , —CH═CH— claim 3 , —CH═CH—COO— claim 3 , —C(CH)═CH—COO— claim 3 , —CH═C(CH)—COO— claim 3 , —C(CH)═C(CH)—COO— claim 3 , —C≡C— claim 3 , —COCH═CH— claim 3 , —C(CH)═C(CH)— claim 3 , —CH═CH—CHO— claim 3 , —CH═CH—OCH— or —CO—; and P is CH—CH—COO— or CH═C(CH)—COO—.7. The compound according to claim 3 , wherein in formulas (1-1) to (1-3) claim 3 , Z claim 3 , Z claim 3 , Zand Zare independently a single bond; s is 0 or 1; Lis a single bond; Lis a single bond claim 3 , —COO— claim 3 , —CH═CH— or —CH═CHCOO—; and P is CH—CH—COO— or CH═C(CH)—COO—.8. The compound according to claim 3 , wherein in formulas (1-1) to (1-3) claim 3 , Z claim 3 , Z claim 3 , Zand Zare independently —CHCHO— or —CH═CHO—; s is 0 or 1; Lis a single bond; Lis a single bond claim 3 , —COO— claim 3 , —CH═CH— or —CH═CHCOO—; and P is CH═CH—COO— or CH═C(CH)—COO—.9. A polymer obtained from the compound according to .10. A liquid crystal composition including the compound according to .18. A liquid crystal display device containing the liquid crystal composition according to . This ...

LIQUID CRYSTAL COMPOUND SHOWING NEGATIVE DIELECTRIC ANISOTROPY, LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY DEVICE

To provide a liquid crystal compound having a large negative value of dielectric anisotropy (As). A compound is represented by formula (1): 2. The compound according to claim 1 , wherein claim 1 , in formula (1) claim 1 , Z claim 1 , and Zto Zare a single bond.3. The compound according to claim 1 , wherein claim 1 , in formula (1) claim 1 , m is 0.5. A liquid crystal composition containing the compound according to .10. The liquid crystal composition according to claim 5 , further containing at least one kind selected from the group of an optically active compound and a polymerizable compound.11. The liquid crystal composition according to claim 5 , further containing at least one kind selected from the group of an antioxidant and an ultraviolet light absorber.12. A liquid crystal display device claim 5 , comprising the liquid crystal composition according to . The invention relates to a new liquid crystal composition, liquid crystal compound and liquid crystal display device. More specifically, the invention relates to a liquid crystal compound having a negative value of dielectric anisotropy (Δ∈), a liquid crystal composition containing the compound and a liquid crystal display device including the liquid crystal composition.A display device using a liquid crystal compound is widely utilized for a display of a watch, a calculator, a word processor and so forth. The display devices utilize characteristics of the liquid crystal compound, such as optical anisotropy and dielectric anisotropy.A liquid crystal phase includes a nematic liquid crystal phase, a smectic liquid crystal phase and a cholesteric liquid crystal phase, and the nematic liquid crystal phase is most widely utilized. Specific examples of display modes include a dynamic scattering (DS) mode, a deformation of aligned phases (DAP) mode, a guest/host (GH) mode, a twisted nematic (TN) mode, a super twisted nematic (STN) mode, a bistable twisted nematic (BTN) mode, a thin film transistor (TFT) mode, a ...

COMPOUNDS FOR A LIQUID CRYSTALLINE MEDIUM AND USE THEREOF FOR HIGH FREQUENCY COMPONENTS

The present invention relates to compounds containing at least three ring systems, at least one of which is a 2,6-naphthylene group, and two unsaturated bridging groups between the ring systems, and to the use of the compounds for high-frequency components, in particular antennae, especially for the gigahertz region. The liquid-crystalline media comprising these compounds serve, for example, for the phase shifting of microwaves for tuneable ‘phased-array’ antennae. 2. A component for a high-frequency product according to claim 1 , wherein in the compound of formula I claim 1 , A claim 1 , Aand Aare substituted by a total of at least one group L.3. A component for a high-frequency product according to claim 1 , wherein in the compound of formula I claim 1 , Ais a 1 claim 1 ,4-phenylene ring which is optionally substituted by L.4. A component for a high-frequency product according to claim 1 , wherein in the compound of formula I claim 1 , Aand Adenote an optionally substituted 1 claim 1 ,4-phenylene ring.5. A component for a high-frequency product according to claim 1 , wherein in the compound of formula I claim 1 , m+n+p is 1 or 2.7. Compounds according to claim 6 , characterised in that{'sup': 1', '2, 'sub': '2', 'Rand R, independently of one another, denote a halogenated or unsubstituted alkyl radical having 1 to 15 C atoms, where, in addition, one or more CHgroups in these radicals may each be replaced, independently of one another, by —C≡C—, —CH═CH—, —CF═CF—, —CF═CH—, —CH═CF—, —(CO)— and —O— in such a way that O atoms are not linked directly to one another.'}8. A liquid-crystal medium claim 6 , comprising a compound of formula I* according to .10. Liquid-crystal medium according to claim 16 , characterised in that the concentration of the compounds of the formula I in the medium is in the range from in total 5% to 95%.11. Process for the preparation of a liquid-crystal medium according to claim 16 , characterised in that one or more compounds of the formula I ...

OPTICALLY ISOTROPIC LIQUID CRYSTAL MEDIUM AND OPTICAL DEVICE

A liquid crystal medium having stability to heat, light and so forth, a wide temperature range of a liquid crystal phase, a large refractive index anisotropy and a large dielectric anisotropy and an optically isotropic liquid crystal phase is described. A liquid crystal composition is characterized by exhibiting the optically isotropic liquid crystal phase and containing achiral component T containing at least one compound selected from the group of compounds represented by formula (1) as a first component, and a chiral agent: 3. The liquid crystal composition according to claim 2 , wherein the first component is at least one compound selected from the group of compounds represented by formula (1-2).5. The liquid crystal composition according to claim 1 , wherein a ratio of the first component is in the range of 0.5% by weight to 50% by weight based on the total weight of achiral component T.8. The liquid crystal composition according to claim 7 , wherein the second component is at least one compound selected from the group of compounds represented by formula (2-1-1-2).9. The liquid crystal composition according to claim 7 , wherein the second component is at least one compound selected from the group of compounds represented by formula (2-1-4-3).10. The liquid crystal composition according to claim 7 , wherein the second component is a mixture of at least one compound selected from the group of compounds represented by formula (2-1-1-2) and at least one compound selected from the group of compounds represented by formula (2-1-4-3).11. The liquid crystal composition according to claim 6 , wherein a ratio of the second component is in the range of 5% by weight to 70% by weight based on the total weight of achiral component T.12. (canceled)14. The liquid crystal composition according to claim 13 , wherein the third component is at least one compound selected from the group of compounds represented by formula (3-2).15. The liquid crystal composition according to claim ...

Liquid-crystalline compounds and liquid-crystalline media

The present invention relates to liquid-crystalline compounds containing an O-heterocyclic ring, three partially fluorinated benzene rings and a —CF 2 O— bridge between the rings. In addition, the invention relates to liquid-crystalline media prepared therewith and to liquid-crystal display devices (LC displays) containing these media.

POLYMERISABLE COMPOUNDS AND THE USE THEREOF IN LIQUID-CRYSTAL DISPLAYS

The present invention relates to polymerisable compounds, to processes and intermediates for the preparation thereof, and to the use thereof for optical, electro-optical and electronic purposes, in particular in liquid-crystal (LC) media and LC displays, especially in LC displays of the PS (“polymer sustained”) or PSA (“polymer sustained alignment”) type. 2. The mixture according to claim 1 , characterised in that Rand Rin formula I denote identical or different radicals P or P-Sp-.5. A PS polymer stabilised or PSA polymer sustained alignment display comprising a liquid crystalline mixture according to in the display.6. A PS or PSA display containing an LC cell having two substrates and two electrodes claim 1 , where at least one substrate is transparent to light and at least one substrate has one or two electrodes claim 1 , and a layer claim 1 , located between the substrates claim 1 , of an LC medium comprising a polymerised component and a low-molecular-weight component claim 1 , where the polymerised component is obtainable by polymerisation of one or more polymerisable compounds between the substrates of the LC cell in the LC medium claim 1 , where at least one of the polymerisable compounds is a polymerisable compound according to .9. A LC display comprising a mixture of .10. LC display according to claim 9 , characterised in that it is a PSA-VA claim 9 , PSA-OCB claim 9 , PSA-IPS claim 9 , PS-FFS claim 9 , PSA-posi-VA or PSA-TN display.11. (canceled)13. The mixture according to claim 1 , comprising one or more compounds containing an alkenyl group.19. Process for the production of an LC display of the PS or PSA type claim 11 , in which an LC medium according to is introduced into an LC cell having two substrates and two electrodes claim 11 , where at least one substrate is transparent to light and at least one substrate has one or two electrodes claim 11 , and the polymerisable compounds are polymerised claim 11 , preferably with application of an electrical ...

OPTICAL FILM, RETARDATION PLATE, ELLIPTICA POLARIZING PLATE, LIQUID CRYSTAL DISPLAY DEVICE AND COMPOUND

An optical film comprising at least one compound represented by formula (1) is disclosed. In the formula, Y, Yand Yeach independently represent methine or a nitrogen atom; R, Rand Reach independently represent formula (A), (B) or (C) or a hydrogen atom, provided that at least two of R, Rand Reach independently represent formula (A), (B) or (C). In the formulae, L, L, Leach represent a 5-membered heterocyclic group. The present application is a Divisional application of U.S. application Ser. No. 12/726,640, filed Mar. 18, 2010, which claims benefit of priority under 35 U.S.C. 119 to Japanese Patent Application Nos. 2009-068293, filed on Mar. 19, 2009, and 2010-060267, filed on Mar. 17, 2010, which are expressly incorporated herein by reference in its entirety.1. Technical FieldThe present invention relates to an optical film useful for liquid crystal display devices or the like, and to a retardation plate, elliptical polarizing plate and liquid crystal display device having the same. The present invention relates also to compounds which are useful for producing optical films.2. Background ArtIt is known that discotic liquid crystal compounds are important as a material for optical compensation sheets. Examples of a liquid crystal compound exhibiting a discotic liquid crystallinity include 2, 3, 6, 7, 10, 11-hexa{4-(4-acryloyloxyhexyloxy) benzoyloxy}triphenylene (for example, JPA No. 8-50206).Usually, retardation, Δnd, of an optical compensation film may be determined depending on the optical properties of a liquid crystal cell to be compensated by the film. Retardation of an optically anisotropic layer, Δnd, is a product of birefringence, Δn, of the layer and the thickness, d, of the layer. Even if the layer is thin, the layer, having large birefringence, Δn, would be able to compensate birefringence of a liquid crystal cell. On the other hand, the layer having small birefringence, Δn, wouldn't be able to compensate birefringence of a liquid crystal cell unless the ...

LIQUID-CRYSTALLINE MEDIUM

The invention relates to a liquid-crystalline medium comprising one or more compounds of the formula I 2. (canceled)3. (canceled)4. (canceled)5. (canceled)6. (canceled)7. (canceled)8. (canceled)9. (canceled)10. (canceled)11. (canceled)12. (canceled)13. (canceled)14. (canceled)15. (canceled)17. The liquid-crystalline medium according to claim 1 , wherein Xis F claim 1 , Cl or a mono- or polyfluorinated alkyl or alkoxy radical having 1 claim 1 , 2 or 3 C atoms or a mono- or polyfluorinated alkenyl radical having 2 or 3 C atoms.18. The liquid-crystalline medium according to claim 1 , wherein Xis F claim 1 , Cl claim 1 , CF claim 1 , CHF claim 1 , OCF claim 1 , OCHF claim 1 , OCFHCF claim 1 , OCFHCHF claim 1 , OCFHCHF claim 1 , OCFCH claim 1 , OCFCHF claim 1 , OCFCHF claim 1 , OCFCFCHF claim 1 , OCFCFCHF claim 1 , OCFHCFCF claim 1 , OCFHCFCHF claim 1 , OCH═CF claim 1 , OCF═CF claim 1 , OCFCHFCF claim 1 , OCFCFCF claim 1 , OCFCFCClF claim 1 , OCClFCFCF claim 1 , CF═CF claim 1 , CF═CHF or CH═CF.19. The liquid-crystalline medium according to claim 1 , wherein Xdenotes F or OCF.20. The liquid-crystalline medium according to claim 1 , wherein Rdenotes straight-chain alkyl or alkoxy having 1 to 8 C atoms or straight-chain alkenyl or alkenyloxy having 2 to 7 C atoms.21. The liquid-crystalline medium according to claim 17 , wherein Rdenotes straight-chain alkyl or alkoxy having 1 to 8 C atoms or straight-chain alkenyl or alkenyloxy having 2 to 7 C atoms.22. The liquid-crystalline medium according to claim 1 , wherein in formula I claim 1 , Land Lboth denote H claim 1 , Ldenotes F claim 1 , and Land Lboth denote F.29. The liquid-crystalline medium according to claim 1 , wherein said medium comprises 1-25% by weight of compounds of the formula I.32. The liquid-crystalline medium according to claim 30 , wherein said medium comprises 30-70% by weight of compounds of the formulae II and/or III.33. The liquid-crystalline medium according to claim 30 , wherein said medium comprises 2- ...

HIGH SCATTERING SMECTIC LIQUID CRYSTAL MATERIAL AND DISPLAY DEVICE USING THE SAME

The present invention relates to a high scattering smectic liquid crystal material and display device using the same. In the present invention, a series of smectic A phase liquid crystals having compact arrangement of crystal domains or a series of smectic liquid crystal mixed materials having a degree of order higher than that of the smectic A phase and an optical texture different from that of the smectic A phase are obtained by mixing a smectic liquid crystal with an organic compound having a high optical anisotropy (Δn) or mixing different types of smectic phases. When used in a smectic stable state liquid crystal display pattern, these materials have high scattering properties and can effectively improve the contrast of a smectic liquid crystal display device. The present invention also improves contrast when it used in a reflective smectic liquid crystal display device. 118-. (canceled)26. The high scattering smectic liquid crystal material of claim 21 , wherein the high scattering smectic liquid crystal material comprises a smectic A claim 21 , B claim 21 , C claim 21 , D claim 21 , E claim 21 , F claim 21 , G claim 21 , H or I phase liquid crystal material.27. The high scattering smectic liquid crystal material of claim 26 , wherein the high scattering smectic liquid crystal material further comprises at least one compound selected from the group consisting of: alkyne compounds claim 26 , heterocyclic compounds claim 26 , difluoro ether compounds and polycyclic biphenyl compounds.32. The high scattering smectic liquid crystal material of claim 28 , wherein the high scattering smectic liquid crystal material is a smectic A phase material claim 28 , or a non-smectic A phase material having a degree of order higher than that of the smectic A phase.33. The high scattering smectic liquid crystal material of claim 32 , wherein the compound of Formula (I) is 1% to 99.9999% of the total weight of a mixed liquid crystal layer claim 32 , and the ionic compounds of ...

Liquid crystal composition and liquid crystal display device

A liquid crystal composition including a polymerizable compound, and an AM device including the liquid crystal composition are described. The liquid crystal composition includes the compound (1) and the compound (2): wherein P 1 and P 2 are polymerizable groups; the rings A, B, C and E are 1,4-cyclohexylene or 1,4-phenylene, etc.; the ring D is 2,3-difluoro-1,4-phenylene, etc.; Z 1 and Z 2 are alkylene, etc.; L 1 , Z 3 and Z 4 are a single bond, etc.; R 1 and R 2 are alkyl, etc.; and q, r and s are 1, etc.

LIQUID CRYSTAL COMPOUND HAVING FLUOROVINYL GROUP, LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY DEVICE

A liquid crystal compound having a high stability to heat, light and so forth, a high clearing point, a low minimum temperature of a liquid crystal phase, a small viscosity, a suitable optical anisotropy, a large dielectric anisotropy, a suitable elastic constant and an excellent solubility in other liquid crystal compounds, a liquid crystal composition containing the compound, and a liquid crystal display device including the composition. The compound is represented by formula (1): 2. The compound according to claim 1 , wherein claim 1 , in formula (1) claim 1 , Ris halogen claim 1 , alkyl having 1 to 15 carbons claim 1 , alkenyl having 2 to 15 carbons claim 1 , alkoxy having 1 to 14 carbons or alkenyloxy having 2 to 14 carbons; Z claim 1 , Z claim 1 , Zand Zare independently a single bond claim 1 , —(CH)— claim 1 , —CH═CH— claim 1 , —CF═CF— claim 1 , —COO— claim 1 , —OCO— claim 1 , —CFO— or —OCF—; Xis halogen claim 1 , —C≡N claim 1 , N═C═S claim 1 , —SFor alkyl having 1 to 10 carbons claim 1 , and in the alkyl claim 1 , at least one of —CH— may be replaced by —O— or —S— claim 1 , at least one of —(CH)— may be replaced by —CH═CH— claim 1 , and in the groups claim 1 , at least one of hydrogen may be replaced by halogen.3. The compound according to claim 2 , wherein Ris fluorine claim 2 , alkyl having 1 to 15 carbons claim 2 , alkenyl having 2 to 15 carbons claim 2 , alkoxy having 1 to 14 carbons or alkenyloxy having 2 to 14 carbons; Z claim 2 , Z claim 2 , Zand Zare independently a single bond claim 2 , —(CH)— claim 2 , —CH═CH— claim 2 , —COO— or —CFO—; Land Lare independently hydrogen or fluorine; and Xis fluorine claim 2 , —CF claim 2 , —CHF claim 2 , —CHF claim 2 , —OCF claim 2 , —OCHFor —OCHF.4. The compound according to claim 3 , wherein Ris fluorine claim 3 , alkyl having 1 to 10 carbons or alkenyl having 2 to 10 carbons; ring A claim 3 , ring Aand ring Aare independently 1 claim 3 ,4-cyclohexylene claim 3 , 1 claim 3 ,4-phenylene claim 3 , 1 claim 3 ,4- ...

ORTHOESTER DERIVATIVE, LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY DEVICE

The invention is to provide a liquid crystal compound having a large dielectric anisotropy, a high voltage holding ratio and stability to heat, light and so forth, maintaining a nematic phase in a wide temperature range, having a suitable optical anisotropy and an excellent compatibility with other liquid crystal compounds, particularly, to provide a liquid crystal compound having a large dielectric anisotropy. The invention provides compound (1): 2. The compound according to claim 1 , wherein claim 1 , in formula (1) claim 1 , a sum of i claim 1 , j claim 1 , k claim 1 , m claim 1 , n claim 1 , p and q is 2 claim 1 , 3 or 4.3. The compound according to claim 1 , wherein claim 1 , in formula (1) claim 1 , q is 1.4. The compound according to claim 1 , wherein claim 1 , in formula (1) claim 1 , Ris alkyl having 1 to 10 carbons claim 1 , alkenyl having 2 to 10 carbons or alkoxy having 1 to 9 carbons; ring A claim 1 , ring A claim 1 , ring A claim 1 , ring A claim 1 , ring Aand ring Aare independently 1 claim 1 ,4-cyclohexylene claim 1 , 1 claim 1 ,4-cyclohexenylene claim 1 , tetrahydropyran-2 claim 1 ,5-diyl claim 1 , 1 claim 1 ,3-dioxane-2 claim 1 ,5-diyl claim 1 , 1 claim 1 ,4-phenylene in which at least one of hydrogen may be replaced by fluorine or chlorine claim 1 , or pyrimidine-2 claim 1 ,5-diyl; and Z claim 1 , Z claim 1 , Z claim 1 , Z claim 1 , Z claim 1 , Zand Zare independently a single bond claim 1 , —(CH)— claim 1 , —COO— claim 1 , —CFO— or —CH═CH—.5. The compound according to claim 1 , wherein claim 1 , in formula (1) claim 1 , Ris alkyl having 1 to 10 carbons; ring A claim 1 , ring A claim 1 , ring A claim 1 , ring A claim 1 , ring Aand ring Aare independently 1 claim 1 ,4-cyclohexylene claim 1 , 1 claim 1 ,4-phenylene claim 1 , 3-fluoro-1 claim 1 ,4-phenylene or 3 claim 1 ,5-difluoro-1 claim 1 ,4-phenylene; and Z claim 1 , Z claim 1 , Z claim 1 , Z claim 1 , Z claim 1 , Zand Zare independently a single bond claim 1 , —(CH)— claim 1 , —COO— claim 1 , — ...

LIQUID CRYSTAL COMPOSITION, ANTIOXIDANT AND LIQUID CRYSTAL DISPLAY DEVICE

To provide a liquid crystal composition satisfying at least one characteristic such as high maximum temperature of nematic phase, low minimum temperature thereof, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy and specific resistance, high stability to ultraviolet light and heat; a liquid crystal composition having a suitable balance regarding at least two thereof; and an AM device including the composition. The liquid crystal composition has nematic phase, and contains as a first component a specific antioxidant having high compatibility with the composition and an excellent antioxidant function, and may contain a specific component having high maximum temperature or small viscosity as a second component, a specific component having high maximum temperature or large dielectric anisotropy as a third component, a specific component having large negative dielectric anisotropy as a fourth component, and a specific antioxidant as a fifth component, and a liquid crystal display device includes the composition. 14. The liquid crystal composition according to claim 9 , wherein a ratio of the fifth component is in the range of 0.005 part by weight to 1 part by weight based on 100 parts by weight of the liquid crystal composition excluding the first component and the fifth component.16. A liquid crystal composition containing the compound according to .17. Use of the compound according to as an antioxidant.18. A liquid crystal display device including the liquid crystal composition according to .19. The liquid crystal display device according to claim 18 , wherein an operating mode in the liquid crystal display device is a TN mode claim 18 , an ECB mode claim 18 , an OCB mode claim 18 , a VA mode claim 18 , an IPS mode claim 18 , a PSA mode claim 18 , an FFS mode or an FPA mode claim 18 , and a driving mode of the liquid crystal display is an active matrix mode.20. Use of the liquid crystal composition according to in a liquid crystal ...

LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY DEVICE

To provide a liquid crystal composition satisfying at least one characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature thereof, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy and specific resistance, high stability to ultraviolet light and heat, or having a suitable balance regarding at least two of the characteristics; an AM device having short response time, a large voltage holding ratio and contrast ratio, and a long life. A liquid crystal composition has a nematic phase and contains a specific straight-chain compound as a first component and a specific compound having a large dielectric anisotropy as second component, and may contain a specific compound having a high maximum temperature or small viscosity as a third component and a specific compound having a high maximum temperature or large dielectric anisotropy as a fourth component, and a liquid crystal display device includes the composition. 3. The liquid crystal composition according to claim 1 , wherein a ratio of the first component is in the range of 3% by weight to 35% by weight and a ratio of the second component is in the range of 10% by weight to 70% by weight claim 1 , based on the total weight of the liquid crystal composition.6. The liquid crystal composition according to claim 4 , wherein a ratio of the third component is in the range of 25% by weight to 70% by weight based on the total weight of the liquid crystal composition.11. The liquid crystal composition according to claim 7 , wherein a ratio of the fourth component is in the range of 3% by weight to 30% by weight based on the total weight of the liquid crystal composition.12. The liquid crystal composition according to claim 8 , wherein a ratio of the fourth component is in the range of 3% by weight to 30% by weight based on the total weight of the liquid crystal composition.13. The liquid crystal composition according to claim 1 , wherein a maximum temperature ...

LIQUID-CRYSTALLINE MEDIUM

The invention relates to a liquid-crystalline medium which comprises at least one compound of the formula I, 9. Liquid-crystalline medium according to claim 1 , characterised in that the proportion of compounds of the formula I in the mixture as a whole is ≧1% by weight.10. Liquid-crystalline medium according to claim 1 , characterised in that it additionally comprises one or more polymerisable compounds.11. Liquid-crystalline medium according to claim 1 , characterised in that the concentration of the polymerisable compound(s) claim 1 , based on the medium claim 1 , is 0.01-5% by weight.12. Liquid-crystalline medium according to claim 1 , characterised in that the polymerisable compound(s) is (are) selected from compounds of the formula I*{'br': None, 'sup': a', '1', '1', '2', 'b, 'sub': 'm', 'R-A-(Z-A)-R\u2003\u2003I*'}in which the individual radicals have the following meanings:{'sup': a', 'b', 'a', 'b, 'sub': 5', '2, 'Rand Reach, independently of one another, denote P, P-Sp-, H, halogen, SF, NO, a carbon group or hydrocarbon group, where at least one of the radicals Rand Rdenotes or contains a group P or P-Sp-,'}P on each occurrence, identically or differently, denotes a polymerisable group,Sp on each occurrence, identically or differently, denotes a spacer group or a single bond,{'sup': 1', '2, 'Aand Aeach, independently of one another, denote an aromatic, heteroaromatic, alicyclic or heterocyclic group, preferably having 4 to 25 ring atoms, which may also contain fused rings, and which may also be mono- or polysubstituted by L,'}{'sub': 2', '5', '2, 'L denotes P-Sp-, H, OH, CHOH, halogen, SF, NO, a carbon group or hydrocarbon group,'}{'sup': 1', '0', '00, 'sub': 2', '2', '2', '2', '2', '2', '2', '2', '2', 'n1', '2', '2', '2', '2', '2', 'n1, 'Zon each occurrence, identically or differently, denotes —O—, —S—, —CO—, —CO—O—, —OCO—, —O—CO—O—, —OCH—, —CHO—, —SCH—, —CHS—, —CFO—, —OCF—, —CFS—, —SCF—, —(CH)—, —CFCH—, —CHCF—, —(CF)—, —CH═CH—, —CF═CF—, —C≡C—, —CH═CH—COO ...

COMPOUND HAVING 2,2-DIFLUOROVINYLOXY GROUP OR 1,2,2-TRIFLUOROVINYLOXY GROUP, LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY DEVICE

To provide a liquid crystal compound having a high stability to light, a high clearing point, a low minimum temperature of a liquid crystal phase, a small viscosity, a suitable optical anisotropy, a large dielectric anisotropy, a suitable elastic constant and an excellent solubility in other liquid crystal compounds. The invention concerns a compound represented by formula (1), a liquid crystal composition containing the compound and a liquid crystal display device including the composition: 2. The compound according to claim 1 , wherein Ris alkyl having 1 to 20 carbons or alkenyl having 2 to 20 carbons; ring A claim 1 , ring Aand ring Aare independently 1 claim 1 ,4-cyclohexylene claim 1 , 1 claim 1 ,4-phenylene claim 1 , 2-fluoro-1 claim 1 ,4-phenylene claim 1 , 2 claim 1 ,6-difluoro-1 claim 1 ,4-phenylene claim 1 , tetrahydropyran-2 claim 1 ,5-diyl or 1 claim 1 ,3-dioxane-2 claim 1 ,5-diyl;{'sup': 1', '3, 'sub': '2', 'Zand Zare independently a single bond, —CH═CH— or —CFO—; and'}{'sup': 1', '2', '3, 'L, Land Lare independently hydrogen or fluorine.'}3. The compound according to claim 1 , wherein m is 1 or 2.4. The compound according to claim 1 , wherein ring Ais 1 claim 1 ,4-cyclohexylene claim 1 , 1 claim 1 ,4-phenylene claim 1 , 2-fluoro-1 claim 1 ,4-phenylene or 2 claim 1 ,6-difluoro-1 claim 1 ,4-phenylene.5. The compound according to claim 1 , wherein Zis a single bond.6. The compound according to claim 1 , wherein n is 0.9. A liquid crystal composition containing at least one of the compound according to .15. The liquid crystal composition according to claim 9 , further containing at least one of optically active compound.16. The liquid crystal composition according to claim 9 , further containing at least one of antioxidant and/or ultraviolet light absorber.17. A liquid crystal display device including the liquid crystal composition according to . The invention relates to a liquid crystal compound and a liquid crystal composition. More specifically, the ...

LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY DEVICE AND USE THEREOF

To provide a liquid crystal composition satisfying at least one of characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of the nematic phase, small viscosity, suitable optical anisotropy, large dielectric anisotropy, large specific resistance, high stability to ultraviolet light, high stability to heat and a large elastic constant, or is to provide a liquid crystal composition having a suitable balance regarding at least two of the characteristics; an AM device having short response time, a large voltage holding ratio, a large contrast ratio, a long service life and so forth. The liquid crystal composition has the nematic phase and contains a compound having a difluoromethyleneoxy group and a trifluoromethyl group and having large dielectric anisotropy as a first component, and a specific compound having small dielectric anisotropy as a second component. The liquid crystal display device contains the composition. 911-. (canceled)13. The liquid crystal composition according to claim 3 , wherein the second component is at least one compound selected from the group of compounds represented by formula (2-1) claim 3 , in which at least one of Rand Ris alkenyl having 2 to 12 carbons.14. (canceled)16. (canceled)20. (canceled)21. The liquid crystal composition according to claim 6 , wherein a ratio of the first component is in the range of 5% by weight to 30% by weight claim 6 , a ratio of the second component is in the range of 15% by weight to 70% by weight claim 6 , and a ratio of the third component is in the range of 10% by weight to 70% by weight claim 6 , based on the total weight of the liquid crystal composition.22. A liquid crystal display device including the liquid crystal composition according to .23. The liquid crystal display device according to claim 22 , wherein an operating mode in the liquid crystal display device is a TN mode claim 22 , an ECB mode claim 22 , an OCB mode claim 22 , an IPS mode claim 22 , an FFS ...

Microdevices and Methods of Manufacture

Illustrative embodiments of microdevices and methods of manufacturing such microdevices are disclosed. In at least one illustrative embodiment, a method of manufacturing one or more microdevices may include forming a liquid dispersion containing cellulose nanocrystals (CNC), depositing the liquid dispersion containing the CNC on a substrate, drying the liquid dispersion containing the CNC to form a solid film on the substrate, where the liquid dispersion contains a sufficient concentration of CNC to form a continuous solid film having a controlled microstructure, and processing the solid film to form the one or more microdevices on the substrate. 1. A method of manufacturing one or more microdevices , the method comprising:forming a liquid dispersion containing cellulose nanocrystals (CNC);depositing the liquid dispersion containing the CNC on a substrate;drying the liquid dispersion containing the CNC to form a solid film on the substrate, wherein the liquid dispersion contains a sufficient concentration of CNC to form a continuous solid film having a controlled microstructure; andprocessing the solid film to form the one or more microdevices on the substrate.2. The method of claim 1 , wherein the liquid dispersion containing the CNC has an isotropic microstructure.3. The method of claim 1 , wherein the liquid dispersion containing the CNC has a biphasic microstructure.4. The method of claim 3 , wherein the controlled microstructure of the solid film comprises one or more anisotropic domains and one or more isotropic domains.5. The method of claim 1 , wherein the liquid dispersion containing the CNC has a liquid crystalline microstructure.6. The method of claim 5 , wherein the controlled microstructure of the solid film comprises one or more anisotropic domains retained from the liquid crystalline microstructure of the liquid dispersion containing the CNC.7. The method of claim 6 , wherein the liquid crystalline microstructure of the liquid dispersion containing ...

LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY DEVICE

To provide a liquid crystal composition satisfying at least one of characteristics such as high maximum temperature of a nematic phase, low minimum temperature thereof, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy and specific resistance, high stability to ultraviolet light and heat; a liquid crystal composition having a suitable balance regarding at least two thereof; and an AM device having short response time, large voltage holding ratio and contrast ratio, long life and so forth. The liquid crystal composition has nematic phase, and contains as a first component a specific compound having large dielectric anisotropy and as a second component a specific compound having small viscosity, and may contain as a third component a specific compound having high maximum temperature or large dielectric anisotropy, and as a fourth component a specific compound having high maximum temperature or small viscosity, and a liquid crystal display device includes the composition. 3. The liquid crystal composition according to claim 1 , wherein a ratio of the first component is in the range of 5% by weight to 30% by weight and a ratio of the second component is in the range of 10% by weight to 95% by weight claim 1 , based on the total weight of the liquid crystal composition.6. The liquid crystal composition according to claim 4 , wherein a ratio of the third component is in the range of 10% by weight to 85% by weight based on the total weight of the liquid crystal composition.11. The liquid crystal composition according to claim 7 , wherein a ratio of the fourth component is in the range of 5% by weight to 75% by weight based on the total weight of the liquid crystal composition.12. The liquid crystal composition according to claim 8 , wherein a ratio of the fourth component is in the range of 5% by weight to 75% by weight based on the total weight of the liquid crystal composition.13. The liquid crystal composition according to claim 1 , ...

COMPOUND HAVING A FIVE-MEMBERED RING, THE LIQUID CRYSTAL COMPOSITION AND THE LIQUID CRYSTAL DISPLAY DEVICE

The invention provides a liquid crystal compound that has an excellent compatibility with other liquid crystal compounds and also has at least one of characteristics such as a high stability to heat, light or the like, a suitable refractive index anisotropy (Δn), a low threshold voltage and a suitable dielectric anisotropy (Δ∈). A compound represented by formula (1). 2. The compound according to claim 1 , wherein in formula (1) claim 1 ,{'sup': 1', '2, 'Ris alkyl having 1 to 10 carbons, alkoxy having 1 to 9 carbons or alkenyl having 2 to 10 carbons; Ris alkyl having 1 to 10 carbons, alkoxy having 1 to 9 carbons, alkenyl having 2 to 10 carbons;'}{'sub': '1', 'sup': 2', '3', '1', '2', '3, 'the ring A, the ring Aand the ring Aare each independently 1,4-cyclohexylene, 1,4-phenylene, 2-fluoro-1,4-phenylene, 3-fluoro-1,4-phenylene or 2,3-difluoro-1,4-phenylene, and at least one of the ring A, the ring Aand the ring Ais 2,3-difluoro-1,4-phenylene; and'}{'sup': 1', '2', '3, 'sub': 2', '2', '2', '4', '2', '2', '2', '2, 'Z, Zand Zare each independently a single bond, —(CH)—, —(CH)—, —COO—, —OCO—, —CFO—, —OCF—, —CH═CH—, —CF═CF—, —CHO— or —OCH—.'}3. The compound according to claim 2 , wherein in formula (1) claim 2 ,{'sup': 1', '2, 'sub': 3', '3, 'Ris alkyl having 1 to 7 carbons, alkoxy having 1 to 6 carbons or alkenyl having 2 to 7 carbons; Ris alkyl having 1 to 7 carbons, alkoxy having 1 to 6 carbons, alkenyl having 2 to 7 carbons, —CF, —OCF, fluorine or chlorine;'}; and{'sup': 1', '2', '3, 'sub': 2', '2', '2', '2', '2', '2, 'Z, Zand Zare each independently a single bond, —(CH)—, —COO—, —OCO—, —CFO—, —OCF—, —CHO— or —OCH—.'}48-. (canceled)9. A liquid crystal composition comprising a first component and a second component claim 1 , wherein the first component is at least one compound selected from the compounds according to .18. The liquid crystal composition according to claim 9 , further comprising at least one optically active compound and/or at least one polymerizable ...

LIQUID-CRYSTALLINE MEDIUM

The invention relates to a liquid-crystalline medium comprising at least one compound of the formula I, 2. The liquid-crystalline medium according to claim 1 , wherein Rin formula I denotes a straight-chain alkyl radical claim 1 , in which claim 1 , in addition claim 1 , one or more CHgroups are optionally replaced by —CH═CH—.13. The liquid-crystalline medium according to claim 1 , comprising 1-30% by weight of compounds of the formula I.14. The liquid-crystalline medium according to claim 1 , additionally comprising at least one UV stabiliser and/or antioxidant.15. The liquid-crystalline medium according to claim 1 , additionally comprising at least one polymerizable compound.17. A process for the preparation of a liquid-crystalline medium according to claim 1 , comprising mixing at least one compound of formula I with at least one further mesogenic compound and optionally with at least one additive(s) and/or at least one polymerizable compound.18. An electro-optical liquid-crystal display containing a liquid-crystalline medium according to .19. A TN claim 1 , STN claim 1 , TN-TFT claim 1 , OCB claim 1 , IPS claim 1 , PS-IPS claim 1 , FFS claim 1 , PS-FFS display claim 1 , shutter spectacle claim 1 , LC lens or positive VA displays comprising the liquid crystalline medium according to . The present invention relates to a liquid-crystalline medium (LC medium), to the use thereof for electro-optical purposes, and to LC displays containing this medium.Liquid crystals are used principally as dielectrics in display devices, since the optical properties of such substances can be modified by an applied voltage. Electro-optical devices based on liquid crystals are extremely well known to the person skilled in the art and can be based on various effects. Examples of such devices are cells having dynamic scattering, DAP (deformation of aligned phases) cells, guest/host cells, TN cells having a “twisted nematic” structure, STN (“super-twisted nematic”) cells, SBE (“ ...

THIOPHENE COMPOUNDS FOR LIQUID-CRYSTALLINE MEDIA

The invention relates to liquid-crystalline compounds of the formula I 3. A liquid-crystalline medium according to claim 1 , wherein characterised in that Rdenotes alkyl claim 1 , alkoxy claim 1 , alkenyl or alkenyloxy claim 1 , each having up to 8 carbon atoms.4. A liquid-crystalline medium according to claim 1 , wherein Ldenotes fluorine and Lindependently denotes fluorine or hydrogen.6. A liquid-crystalline medium according to claim 1 , wherein Land Ldenote fluorine.7. A liquid-crystalline medium according to claim 1 , wherein V denotes hydrogen.8. A liquid-crystalline medium according to claim 1 , wherein V denotes fluorine.9. (canceled)10. (canceled)11. (canceled)14. A liquid-crystalline medium according to claim 1 , characterised in that the total content of CFO-bridged compounds claim 1 , including the compounds of the formula I claim 1 , is 35% by weight or more.15. (canceled)16. An electro-optical liquid-crystal display containing a liquid-crystalline medium according to .19. A liquid-crystalline medium according to claim 1 , wherein in the compounds of formulae IV to VIII claim 1 , Xis F claim 1 , OCF claim 1 , OCHF claim 1 , CF claim 1 , CFH claim 1 , Cl claim 1 , or OCH═CF claim 1 , and Ris straight-chain alkyl or alkenyl claim 1 , each having up to 6 C atoms.20. A liquid-crystalline medium according to claim 1 , wherein in the compounds of formula IV claim 1 , Ris alkyl having 1 to 8 C atoms and Xis F claim 1 , Cl claim 1 , OCHF claim 1 , OCF claim 1 , or OCH═CF.21. A liquid-crystalline medium according to claim 1 , wherein in the compounds of Formulas XIII-XVI claim 1 , Rdenotes alkyl having 1 to 8 C atoms and Xdenotes F or Cl.22. A liquid-crystalline medium according to claim 1 , wherein in the compounds of formulas D1-D2 claim 1 , Rdenotes alkyl having 1 to 8 C atoms and Xdenotes F.23. A liquid-crystalline medium according to claim 1 , wherein in the compounds of formulas XVIIa-XVIIb claim 1 , Rand Reach claim 1 , independently of one another claim 1 ...

Liquid crystal medium and liquid crystal display

The instant invention relates to mesogenic media exhibiting a blue phase, comprising one, two or more compounds of formula I-A wherein the parameters are as specified in the text, preferably stabilised by a polymer, and their use in electro-optical light modulation elements and their respective use in displays, as well as to such displays.

LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY DEVICE

A liquid crystal composition is described, which has a nematic phase, contains a specific compound having a high maximum temperature or a large dielectric anisotropy as a first component and a specific compound having a large dielectric anisotropy as a second component, and may also contain a specific compound having a high maximum temperature or a small viscosity as a third component and a specific compound having a high maximum temperature or a large dielectric anisotropy as a fourth component. An active-matrix (AM) liquid crystal display device including the liquid crystal composition is also described. 4. The liquid crystal composition according to claim 1 , wherein a proportion of the first component is in a range of 3 wt % to 40 wt % claim 1 , and a proportion of the second component is in a range of 5 wt % to 60 wt % claim 1 , based on the total weight of the liquid crystal composition.7. The liquid crystal composition according to claim 5 , wherein a proportion of the third component is in a range of 25 wt % to 65 wt % based on a total weight of the liquid crystal composition.12. The liquid crystal composition according to claim 8 , wherein a proportion of the fourth component is in a range of 3 wt % to 30 wt % based on a total weight of the liquid crystal composition.13. The liquid crystal composition according to claim 9 , wherein a proportion of the fourth component is in a range of 3 wt % to 30 wt % based on a total weight of the liquid crystal composition.14. The liquid crystal composition according to claim 1 , of which a maximum temperature of a nematic phase is 70° C. or higher claim 1 , an optical anisotropy (25° C.) at a wavelength of 589 nanometers is 0.08 or more claim 1 , and a dielectric anisotropy (25° C.) at a frequency of 1 kHz is 2 or more.15. A liquid crystal display device including the liquid crystal composition according to .16. The liquid crystal display device according to claim 15 , of which an operating mode is a TN mode claim 15 , ...

LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY DEVICE

A liquid crystal composition and an AM liquid crystal display device are described. The liquid crystal composition contains a specific compound having a small viscosity as a first component, may further contain a specific compound having a large negative dielectric anisotropy as a second component and a specific compound having a small viscosity as a third component, and has a negative dielectric anisotropy and a ratio of rotational viscosity to an elastic constant in the range of 4.2 GPa·s/N or lower. The liquid crystal display device includes the composition. 3. The liquid crystal composition according to claim 2 , wherein the first component is at least one compound selected from the group of compounds represented by formula (1-1).4. The liquid crystal composition according to claim 2 , wherein the first component is at least one compound selected from the group of compounds represented by formula (1-2).5. The liquid crystal composition according to claim 2 , wherein the first component is a mixture of at least one compound selected from the group of compounds represented by formula (1-1) and at least one compound selected from the group of compounds represented by formula (1-2).6. The liquid crystal composition according to claim 1 , wherein a ratio of the first component is in a range of 15 wt % to 90 wt % based on a total weight of the liquid crystal composition.7. The liquid crystal composition according to claim 1 , wherein a ratio of the compound represented by formula (1-2) is in a range of 15 wt % to 40 wt % based on a total weight of the liquid crystal composition.1014-. (canceled)158. The liquid crystal composition according to claim 1 , wherein a ratio of the second component is in a range of 10 wt % to 85 wt % based on a total weight of the liquid crystal composition.1820-. (canceled)21. The liquid crystal composition according to claim 16 , wherein a ratio of the third component is in a range of 5 wt % to 40 wt % based on a total weight of the liquid ...

POLYMERIZABLE COMPOUND AND OPTICALLY ANISOTROPIC BODY

In light of requests to reduce or reverse the wavelength dispersion of the birefringence of a phase-retardation film in order to increase the viewing angle of a liquid crystal display, the present invention provides a polymerizable compound that reduces, for example, the likelihood of crystals precipitating in a polymerizable composition including the polymerizable compound and enables the polymerizable composition to have high preservation stability and a polymerizable composition including the polymerizable compound which reduces the likelihood of inconsistencies being formed in a film-like polymer produced by polymerizing the polymerizable composition. Another object of the present invention is to provide a polymer produced by polymerizing the polymerizable composition and an optically anisotropic body including the polymer. 3. The compound according to claim 1 , wherein Sp claim 1 , Sp claim 1 , Sp claim 1 , and Spthat are present in General Formula (I) each independently represent an alkylene group having 1 to 20 carbon atoms in which one —CH— group or two or more —CH— groups that are not adjacent to one another may be each independently replaced with —O— claim 1 , —COO— claim 1 , —OCO— claim 1 , —OCO—O— claim 1 , —CO—NH— claim 1 , —NH—CO— claim 1 , —CH═CH— claim 1 , or —C≡C—.4. The compound according to claim 1 , wherein claim 1 , in General Formula (I) claim 1 , the total number of π electrons included in Wand Wis 4 to 24.6. A composition comprising the compound according to .7. A liquid crystal composition comprising the compound according to .8. A polymer produced by polymerizing the composition according to .9. An optically anisotropic body comprising the polymer according to .10. A resin claim 1 , a resin additive claim 1 , an oil claim 1 , a filter claim 1 , a bonding agent claim 1 , an adhesive claim 1 , a fat claim 1 , an ink claim 1 , a drug claim 1 , a cosmetic claim 1 , a detergent claim 1 , a building material claim 1 , a packaging material claim 1 ...

Polymerizable compound, composition, polymer, optically anisotropic body, liquid crystal display device, and organic el device

It is an object of the present invention to provide a polymerizable compound suitable as a material for optically anisotropic bodies having excellent optical properties, a composition containing the polymerizable compound, a polymer obtained by polymerizing the polymerizable compound, an optically anisotropic body formed of the polymer, and a liquid crystal display device including the optically anisotropic body.

Liquid crystal composition and liquid crystal display device using the same

There is provided a liquid crystal composition containing a compound represented by General Formula (i) (where R i represents an alkyl group having 1 to 5 carbon atoms) and a compound represented by Formula (ii), and there is also provided a liquid crystal display device using such a liquid crystal composition.

LIQUID CRYSTAL COMPOUND, LIQUID CRYSTAL COMPOSITION, AND LIQUID CRYSTAL DISPLAY DEVICE

A liquid crystal compound of formula (I): 2. The liquid crystal compound according to claim 1 , wherein A claim 1 , A claim 1 , and Aare each independently halogen-substituted or unsubstituted 1 claim 1 ,4-phenylene.3. The liquid crystal compound according to claim 2 , wherein A claim 2 , A claim 2 , and Aare each independently 1 claim 2 ,4-phenylene claim 2 , 2-fluoro-1 claim 2 ,4-phenylene claim 2 , 3-fluoro-1 claim 2 ,4-phenylene claim 2 , 2 claim 2 ,3-difluoro-1 claim 2 ,4-phenylene claim 2 , or 3 claim 2 ,5-difluoro-1 claim 2 ,4-phenylene.4. The liquid crystal compound according to claim 1 , wherein Ris a halogen atom claim 1 , —CN claim 1 , —CF claim 1 , —OCF claim 1 , —OCH═CF claim 1 , —OCFCF═CF claim 1 , a C1-C10 alkyl group or a C1-C10 alkoxyl group.5. The liquid crystal compound according to claim 1 , wherein Ris a hydrogen atom claim 1 , a C1-C5 alkyl group or a halogen-substituted C1-C5 alkyl group.6. The liquid crystal compound according to claim 1 , wherein Z claim 1 , Z claim 1 , and Zare each independently a single bond or —CFO—.7. The liquid crystal compound according to claim 1 , wherein: A claim 1 , A claim 1 , and Aare each independently 1 claim 1 ,4-phenylene claim 1 , 2-fluoro-1 claim 1 ,4-phenylene claim 1 , 3-fluoro-1 claim 1 ,4-phenylene claim 1 , 2 claim 1 ,3-difluoro-1 claim 1 ,4-phenylene claim 1 , or 3 claim 1 ,5-difluoro-1 claim 1 ,4-phenylene; Z claim 1 , Z claim 1 , and Zare each independently a single bond or —CFO—; n=0; and m=0 or 1.8. A liquid crystal composition comprises the liquid crystal compound according to .10. The liquid crystal composition according to claim 9 , wherein Ris a hydrogen atom claim 9 , a C1-C10 alkyl group claim 9 , and Ris a halogen atom claim 9 , —CN claim 9 , a C1-C10 alkyl group claim 9 , a C2-C10 alkenyl group claim 9 , —OCHCF claim 9 , —CF claim 9 , or —OCF.11. A liquid crystal display device comprising a liquid crystal compound according to . This application claims the priority of Taiwan application ...

Liquid crystal medium, optical device, and liquid crystal compound

A liquid crystal medium having stability to heat, light and so forth, a wide liquid crystal phase temperature range, a low driving voltage and a small permittivity and exhibiting an optically isotropic liquid crystal phase is described. An optical device or the like having a short response time, a large contrast ratio, a low driving voltage and a small permittivity is also described. The liquid crystal composition contains an achiral component (T) and a chiral agent, and exhibits an optically isotropic liquid crystal phase. The achiral component (T) includes at least one compound represented by formula (1): wherein, for example, R 1 is alkyl having 1 to 12 carbons, A 1 and A 2 are 1,4-phenylene, Z 1 and Z 2 are single bonds, Z 3 is —COO— or —CF 2 O—, L 11 is hydrogen, fluorine or chlorine, Y 1 is fluorine, chlorine, —CF 3 or —OCF 3 , n1 and n2 are each independently 0 or 1, and n1+n2≧1.

Liquid Crystal Medium

The present invention relates to a liquid crystalline medium comprising a polymerizable compound, to a process for its preparation, to its use for optical, electro-optical and electronic purposes, in particular in liquid crystalline displays, especially in a liquid crystalline display of the polymer sustained alignment (PSA) type, and to a liquid crystalline display, especially a PSA display, comprising it. 3. The liquid crystalline medium of claim 1 , wherein component B) comprises from 0.05 to 2% of compounds of formula A or A1.4. The liquid crystalline medium according to claim 1 , wherein component A) comprises one or more polymerizable compounds of formula I{'br': None, 'sup': a', '1', 'b', '2', 'b, 'sub': 'm', 'R-B-(Z-B)-R\u2003\u2003I'}in which the individual radicals, on each occurrence identically or differently, and each, independently of one another, have the following meaning:{'sup': a', 'b', '0', '00', '00', '1', '2', 'a', 'b, 'sub': 2', '5', '2, 'Rand Rare P, P-Sp-, H, F, Cl, Br, I, —CN, —NO, —NCO, —NCS, —OCN, —SCN, SFor straight-chain or branched alkyl having 1 to 25 C atoms, in which, in addition, one or more non-adjacent CHgroups may each be replaced, independently of one another, by —C(R)═C(R)—, —C≡C—, —N(R)—, —O—, —S—, —CO—, —CO—O—, —O—CO—, —O—CO—O— in such a way that O and/or S atoms are not linked directly to one another, and in which, in addition, one or more H atoms may be replaced by F, Cl, Br, I, CN, P or P-Sp-, where, if Band/or Bcontain a saturated C atom, Rand/or Rmay also denote a radical which is spiro-linked to this saturated C atom,'}{'sup': a', 'b, 'wherein at least one of the radicals Rand Rdenotes or contains a group P or P-Sp-,'}P is a polymerizable group,Sp is a spacer group or a single bond,{'sup': 1', '2, 'Band Bare an aromatic, heteroaromatic, alicyclic or heterocyclic group, which may also contain fused rings, and which is unsubstituted, or mono- or polysubstituted by L,'}{'sup': b', '0', '00, 'sub': 2', '2', '2−', '2', '2', ...

LIQUID-CRYSTALLINE MEDIUM AND LIQUID-CRYSTAL DISPLAY

The present invention relates to dielectrically positive liquid-crystalline media comprising one or more compounds of the formula I, 4. A medium according to claim 1 , wherein the total concentration of the compounds of the formula I in the medium is in the range from 1 ppm to 20 claim 1 ,000 ppm.6. A medium according to claim 1 , which comprises one or more compounds of the formula II.7. A medium according to claim 1 , which comprises one or more compounds of the formula III.9. A liquid-crystal display claim 1 , which contains a medium according to .10. A display according to which is addressed by an active matrix.11. A method which comprises including a medium according to in a liquid-crystal display.12. A process for the preparation of a medium according to claim 1 , wherein one or more compounds of the formula I claim 1 , as given in claim 1 , are mixed with{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'one or more of the compounds of formula II as given in and/or'}{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'one or more of the compounds of formula III as given in and/or'}one or more further mesogenic compounds and/orone or more additives. The present invention relates to liquid-crystalline media and to liquid-crystal displays containing these media, especially to displays addressed by an active matrix and in particular to displays of the twisted nematic (TN), in-plane switching (IPS) or fringe-field switching (FFS) type.Liquid-crystal displays (LCDs) are used in many areas for the display of information. LCDs are used both for direct-view displays and for projection-type displays. The electro-optical modes used are, for example, the twisted nematic (TN), super twisted nematic (STN), optically compensated bend (OCB) and electrically controlled birefringence (ECB) modes together with their various modifications, as well as others. All these modes utilise an electric field which is substantially perpendicular to the substrates or the liquid-crystal layer ...

ELECTRO-RHEOLOGICAL FLUID AND HAPTIC DEVICE

The present invention relates to an electro-rheological fluid comprising particles of at least one inorganic or organic material suspended in a polar liquid crystalline medium, the use of such electro-rheological fluid in an haptic device, an haptic device itself, a method of the production of such haptic device and the use of such haptic device in electro-optical devices. 1. Device comprising an electro-rheological fluid sandwiched between two substrates , at least one of said substrates being flexible , and one of said substrates being provided with an electrode structure adjacent to the electro-rheological fluid having a significant component of the electrical field parallel to the substrate main plane.2. Device according to claim 1 , characterized in that it is transparent to light.3. Device according to claim 1 , characterized in that the electrode structure is selected from interdigitated electrodes claim 1 , IPS electrodes claim 1 , FFS electrodes or comb like electrodes.4. Device according to claim 1 , characterized in that the lateral spacing of the electrodes of opposing polarity is in the range 10 μm to 2000 μm.5. Device according to claim 1 , characterized in that the driving voltage is in the range from 100 to 800 V.6. Device according to claim 1 , characterized in that the layer-thickness of the electro-rheological fluid is in the range from 10 μm to 1000 μm.7. Device according to claim 1 , characterized in that the electro-rheological fluid is selected from a binary solid-liquid phase mixture.8. Device according to claim 1 , characterized in that the electro-rheological fluid comprises particles of at least one inorganic or organic material suspended in a polar liquid crystalline medium.9. Method of production of a device according to claim 1 , comprising at least the step of providing a layer of an electro-rheological fluid onto a substrate claim 1 , which is provided with an in-plane electrode structure.10. A method of generating an ...

LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY DEVICE

The disclosure shows a liquid crystal composition that satisfies at least one of characteristics such as a high maximum temperature, a low minimum temperature, a small viscosity, a suitable optical anisotropy and a large negative dielectric anisotropy, or that has a suitable balance between at least two of these characteristics, and an AM device including this composition. 3. The liquid crystal composition according to claim 1 , wherein the ratio of the first component is in the range of 5% by weight to 25% by weight claim 1 , and the ratio of the second component is in the range of 15% by weight to 70% by weight.6. The liquid crystal composition according to claim 4 , wherein the ratio of the third component is in the range of 20% by weight to 75% by weight.10. The liquid crystal composition according to claim 7 , wherein the ratio of the fourth component is in the range of 2% by weight to 30% claim 7 , by weight.17. The liquid crystal composition according to claim 11 , wherein the ratio of the additive is in the range of 0.03% by weight to 10% by weight.18. A liquid crystal display device including the liquid crystal composition according to .19. The liquid crystal display device according to claim 18 , wherein the operating mode of the liquid crystal display device is an IPS mode claim 18 , a VA mode claim 18 , an FFS mode or an FPA mode claim 18 , and the driving mode of the liquid crystal display device is an active matrix mode.20. A liquid crystal display device with a polymer sustained alignment type including a liquid crystal composition according to claim 11 , wherein the additive included in the liquid crystal composition has been polymerized. This application claims the priority benefit of Japan application serial no. 2016-132350, filed on Jul. 4, 2016, and Japan application serial no. 2017-039117, filed on Mar. 2, 2017. The entirety of each of the above-mentioned patent applications is hereby incorporated by reference herein and made a part of this ...

Polymerizable polar compound, liquid crystal composition and liquid crystal display element

A compound represented by Formula (1): R 1 is hydrogen or an alkyl group that may be substituted; rings A 1 to A 2 are cyclohexylene or phenylene that may be substituted; a is 0 to 4; Z 1 is a single bond or an alkylene group that may be substituted; Sp 1 to Sp 3 are a single bond or an alkylene that may be substituted; M 1 to M 4 are H, F, Cl, or an alkyl group that may be substituted; R 2 and R 3 are hydrogen, a group represented by Formula (1-a), or an alkyl group having 1 to 5 carbon atoms that may be substituted; and at least one of R 2 and R 3 is a group represented by Formula (1-a); Sp 4 is a single bond or an alkylene group that may be substituted; R 4 and R 5 are hydrogen or an alkyl group; and at least one of R 4 and R 5 is an alkyl group.

METHOD FOR MANUFACTURING A LIQUID CRYSTAL DISPLAY DEVICE AND LIQUID CRYSTAL MIXTURE

The invention relates to a method of manufacturing a liquid crystal display device wherein a liquid crystal mixture having positive dielectric anisotropy or negative dielectric anisotropy is interposed between a first substrate and a second substrate, the liquid crystal mixture comprising liquid crystal molecules, a self assembling photoalignment agent, a polymerisable compound, and wherein said LC mixture is photoaligned by irradiation with linearly polarised ultraviolet light and then cured by irradiation with ultraviolet light. 2. The method according to claim 1 , characterised in that the polarised light is ultraviolet light.3. The method according to claim 1 , characterised in that the total concentration of the one or more compounds of formula S in the liquid crystal mixture is in the range of from 0.01 to 10%.4. The method according to claim 1 , characterised in that the total concentration of the one or more compounds of formula P in the liquid crystal mixture is in the range of from 0.01 to 10%.7. The method according to claim 1 , characterised in that the LC mixture has negative dielectric anisotropy.9. The method according to claim 1 , characterised in that the LC mixture has positive dielectric anisotropy.14. (canceled)15. (canceled)16. Liquid crystal display claim 1 , characterised in that it is manufactured according to the method of .17. Liquid crystal display according to claim 16 , wherein the liquid crystal display is an IPS or FFS display.20. A process for the preparation of LC mixtures according to claim 19 , characterised in that one or more mesogenic or liquid crystalline compounds are mixed with each other and that one or more self assembling photoalignment agents of formula S and one or more polymerisable compounds of formula P are added.21. Liquid crystal display claim 19 , comprising an LC mixture according to .22. Liquid crystal display according to claim 21 , wherein the liquid crystal display is an IPS or FFS display. The invention ...

ELECTRICALLY CONTROLLABLE OPTICAL ELEMENT MADE OF AN OPTICALLY ISOTROPIC LIQUID, IN PARTICULAR LENS, AND METHOD FOR THE PRODUCTION THEREOF ON THE BASIS OF LIQUID COMPOSITES

In order to configure or produce an electrically controllable optical element on the basis of the electro-optic Kerr effect with a low threshold and operating voltage, a minimized temperature dependence of the effect and a low response time, the Kerr liquid according to the invention comprises a mixture of rod-shaped molecules and non-rod-shaped molecules as active composites, a thin layer having a pre-stamping, wide-mesh, anisotropic network between structured and/or planar conductive layer applied to a substrate thus configure a thin-film cell in such a way that without electric field the state of the active composite of the Kerr liquid in the working temperature region RT is isotropic and that by electrically continuous adjustment, of the voltage U or by a switching-on or switching-off a change the voltage U, in the optical element a voltage-induced phase shift or a refractive index deviation is generated and the light passes through an electrode gap perpendicular to the electrodes. 1: An electrically controllable optical element comprising a Kerr cell , said Kerr cell comprising two spaced-apart substrates each having an inner surface to which a planar and/or structured conductive layer is applied , wherein the Kerr liquid comprises a mixture of rod-shaped molecules and non-rod-shaped molecules as active composites , wherein the Kerr liquid is disposed between the conductive layer applied to each substrate such that the Kerr cell is a thin-film cell comprising a wide-mesh , anisotropic network , wherein , without an electric field , a state of the active composites of the Kerr liquid in a working temperature region is isotropic , and wherein electrically continuous adjustment of a voltage or by switching-on the voltage or by switching-off the voltage , a change in a voltage-induced phase shift or in a refractive index deviation of the optical element is generated and light passes through an electrode gap perpendicular to the conductive layers applied to the two ...

LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY INCLUDING THE SAME

A liquid crystal composition including at least one of the liquid crystal molecules represented by Chemical Formulas 1 to 3: 6. The liquid crystal composition of claim 5 , comprisingabout 1 wt % to about 20 wt % of at least one of the liquid crystal molecules represented by Chemical Formula 1-1, Chemical Formula 1-2, Chemical Formula 2-1, Chemical Formula 2-2, Chemical Formula 3-1, and Chemical Formula 3-2, based on the entire weight of the composition.12. The liquid crystal display of claim 11 , comprising:about 1 wt % to about 20 wt % of at least one liquid crystal molecule represented by Chemical Formula 1-1, Chemical Formula 1-2, Chemical Formula 2-1, Chemical Formula 2-2, Chemical Formula 3-1, and Chemical Formula 3-2, based on the entire weight of the liquid crystal layer.13. The liquid crystal display of claim 12 , wherein:the liquid crystal molecules included in the liquid crystal layer are tilted in a direction parallel to branch electrodes when an electric field is not applied to the liquid crystal layer.14. The liquid crystal display of claim 13 , whereinthe liquid crystal molecules are tilted in a direction horizontal to an electric field when the electric field is applied to the liquid crystal layer. This application claims priority to and the benefit of Korean Patent Application No. 10-2015-0098634, filed on Jul. 10, 2015, and all the benefits accruing therefrom under 35 U.S.C. §119, the content of which in its entirety is herein incorporated by reference.(a) Technical FieldThe described technology relates generally to a liquid crystal composition and a liquid crystal display including the same.2. Description of the Related ArtLiquid crystal displays (“LCDs”) are widely used flat panel displays, which include two display panels facing each other, a liquid crystal layer interposed between two display panels, and a field generating electrode such as a pixel electrode and a common electrode positioned on at least one of the two display panels.In an LCD, ...

LIQUID CRYSTAL COMPOUND, LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY DEVICE

A solution is a compound represented by formula (1), a liquid crystal composition containing the compound and a liquid crystal display device including the composition. 2. The compound according to claim 1 , wherein claim 1 , in formula (1) claim 1 ,{'sup': a', 'b, 'sub': 2', '2', '2, 'Rand Rare independently alkyl having 1 to 20 carbons, and in the groups, at least one piece of —CH— may be replaced by —O— or —S—, one or two pieces of —CHCH— may be replaced by —CH═CH— or —C≡C—, and in the monovalent groups, at least one piece of hydrogen may be replaced by fluorine or chlorine; and'}X and Y are independently fluoroalkyl having 1 to 3 carbons, fluoroalkoxy having 1 to 3 carbons or pentafluorosulfanil, and one of X and Y may be fluorine.3. The compound according to claim 1 , wherein claim 1 , in formula (1) claim 1 ,{'sup': a', 'b, 'sub': 2', '2', '2, 'Rand Rare independently alkyl having 1 to 15 carbons, and in the groups, at least one or two pieces of —CH— may be replaced by —O—, one piece of —CHCH— may be replaced by —CH═CH— or —C≡C—, and in the monovalent groups, at least one piece of hydrogen may be replaced by fluorine; and'}X is fluorine, fluoroalkyl having 1 to 3 carbons, fluoroalkoxy having 1 to 3 carbons or pentafluorosulfanil, and Y is fluoroalkyl having 1 to 3 carbons.5. The compound according to claim 4 , wherein claim 4 , in formula (1a) claim 4 , Ris alkyl having 1 to 10 carbons and Ris alkoxy having 1 to 10 carbons; and Y is —CF.7. The compound according to claim 6 , wherein claim 6 , in formula (1b) claim 6 , Ra and Rb are independently alkoxy having 1 to 10 carbons; and Y is —CF.8. A liquid crystal composition claim 1 , containing at least one compound according to .13. A liquid crystal display device claim 8 , including the liquid crystal composition according to . The invention relates to a liquid crystal compound, a liquid crystal composition and a liquid crystal display device. More specifically, the invention relates to a liquid crystal compound ...

Polarizer and image display device

Provided is a polarizer-forming composition from which a polarizer with a high degree of alignment and excellent heat resistance can be formed, a polarizer, and an image display device. The polarizer-forming composition includes a liquid crystal compound, and a dichroic material, in which the liquid crystal compound is a polymer liquid crystal compound, and a content of a component having a number average molecular weight of 1000 or less which is contained in the polymer liquid crystal compound is in a range of 0.10% to 5.0% by mass.

LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY DEVICE

The invention is to provide a liquid crystal composition satisfying at least one of characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of the nematic phase, a small viscosity, a suitable optical anisotropy, a large negative dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to heat, or having a suitable balance regarding at least two of the characteristics; and is to provide an AM device having a short response time, a large voltage holding ratio, a large contrast ratio, a long service life and so forth; wherein the liquid crystal composition includes a specific compound having a large negative dielectric anisotropy and a low minimum temperature as a first component, a specific compound having a small viscosity or a large maximum temperature as a second component and a specific compound having a polymerizable group as a third component, and a liquid crystal display device contains the composition. 7. The liquid crystal composition according to claim 5 , wherein the third component is at least one compound selected from the group of compounds represented by formula (3-2).8. The liquid crystal composition according to claim 6 , wherein the third component is at least one compound selected from the group of compounds represented by formula (3-2).9. The liquid crystal composition according to claim 5 , wherein the third component is at least one compound selected from the group of compounds represented by formula (3-3).10. The liquid crystal composition according to claim 6 , wherein the third component is at least one compound selected from the group of compounds represented by formula (3-3).11. The liquid crystal composition according to claim 5 , wherein the third component is at least one compound selected from the group of compounds represented by formula (3-4).12. The liquid crystal composition according to claim 6 , wherein the third component is at least one ...

Liquid crystal composition and liquid crystal display including the same

A liquid crystal composition includes at least one of liquid crystal molecules represented by Chemical Formulas A and B: where in Chemical Formulas A and B, L 1 to L 4 are each independently —H, —F, —Cl, —OCF 3 , —CF 3 , —CH 2 F, or —CHF 2 , R 1 to R 4 are each independently hydrogen, a halogen, a cyano group, a C1-C12 alkyl group, or a C1-C12 alkoxy group, and Z 1 to Z 4 are each independently a single bond, —O—, —COO—, —OCO—, —CF 2 O—, —OCF 2 —, —CH 2 O—, —OCH 2 —, —SCH 2 —, —CH 2 S—, —CH 2 CH 2 —, —C 2 F 4 —, —CH 2 CF 2 —, —CF 2 CH 2 —, —CH 2n —, where n is a natural number of 1 to 12, —CH═CH—, —CF═CF—, —CH═CF—, —CF═CH—, —C═C—, or —CH═CHCH 2 O.

Polymerisable compounds and the use thereof in liquid-crystal displays

The present invention relates to polymerisable compounds, to processes and intermediates for the preparation thereof, to liquid-crystal (LC) media comprising them, and to the use of the polymerisable compounds and LC media for optical, electro-optical and electronic purposes, in particular in LC displays, especially in LC displays of the polymer sustained alignment type.

COMPOSITION, LIGHT REFLECTING FILM, LUMINANCE-IMPROVING FILM, BACKLIGHT UNIT, AND LIQUID CRYSTAL DISPLAY DEVICE

There is provided a composition containing a discotic liquid crystal compound, a chiral agent, and a surfactant which can form a light reflecting layer formed by fixing a cholesteric liquid crystalline phase, which exhibits excellent durability under a hot and humid environment and excellent heat resistance, and has few alignment defects; a light reflecting film; a luminance-improving film; a backlight unit; and a liquid crystal display device. 1. A composition , comprising:a discotic liquid crystal compound;a chiral agent; anda surfactant.2. The composition according to claim 1 ,wherein the surfactant is a polymer type surfactant.3. The composition according to claim 1 ,wherein the discotic liquid crystal compound has a 3-substituted benzene structure.4. The composition according to claim 1 ,wherein the chiral agent contains an axially asymmetric structure.5. The composition according to claim 1 ,wherein the chiral agent contains a binaphthyl structure.8. The composition according to claim 1 ,wherein the composition is used for forming a light reflecting layer formed by fixing a cholesteric liquid crystalline phase.9. A light reflecting film claim 1 , comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'a first light reflecting layer formed by fixing a cholesteric liquid crystalline phase of the composition according to ,'}wherein, in the first light reflecting layer, a discotic liquid crystal compound is aligned vertically.10. The light reflecting film according to claim 9 ,wherein the first light reflecting layer and a λ/4 plate are laminated to each other.11. The light reflecting film according to claim 9 ,wherein the first light reflecting layer is laminated in direct contact with a surface of an underlayer.12. The light reflecting film according to claim 11 ,wherein the underlayer contains the discotic liquid crystal compound.13. The light reflecting film according to claim 12 ,wherein, in the underlayer, the discotic liquid crystal compound is ...

ALIGNMENT FILM AND FABRICATION METHOD THEREOF, LIQUID CRYSTAL PANEL AND DISPLAY DEVICE

An alignment film and a fabrication method thereof, a liquid crystal panel and a display device, relate to a field of liquid crystal display technology, which can avoid causing static electricity and generating dust during a rubbing process, as well as unevenness of alignment. The method comprises: dispersing discotic liquid crystal molecules containing hydrophobic branched chains in a solvent, to prepare a discotic liquid crystal molecule solution (); and applying the discotic liquid crystal molecule solution on a substrate, and obtaining the alignment film after removing the solvent (). 1. A fabrication method of an alignment film , comprising:dispersing discotic liquid crystal molecules containing hydrophobic branched chains in a solvent, to prepare a discotic liquid crystal molecule solution; andapplying the discotic liquid crystal molecule solution on a substrate, to obtain an alignment film after removing the solvent.2. The fabrication method according to claim 1 , wherein claim 1 , applying the discotic liquid crystal molecule solution on a substrate claim 1 , to obtain the alignment film after removing the solvent claim 1 , includes:instilling a layer of the discotic liquid crystal molecule solution onto a hydroxylated substrate, and removing the solvent by evaporation after spin coating, to obtain the alignment film.3. The fabrication method according to claim 1 , wherein claim 1 , the discotic liquid crystal molecules include TCnAT.4. The fabrication method according to claim 3 , wherein claim 3 , the solvent in the discotic liquid crystal molecule solution includes chloroform claim 3 , and a concentration of the discotic liquid crystal molecule solution is 0.001 wt %-5 wt %.5. The fabrication method according to claim 2 , wherein claim 2 , a fabrication method of the hydroxylated substrate includes:performing an ultrasonic treatment with a hydrochloric acid solution on the substrate, after washing the substrate;{'sub': 2', '4, 'soaking the substrate in ...

CIRCULARLY POLARIZING PLATE

Provided is a circularly polarizing plate and a display device that includes the circularly polarizing plate. The circularly polarizing plate can be applied to a display device such as an organic light emitting display device to minimize blocking of light in the visible light region affecting image quality while blocking harmful ultraviolet rays appropriately and also has excellent durability. 1. A circularly polarizing plate comprisinga polarizer; anda phase difference layer formed on one side of the polarizer,wherein the phase difference layer comprises a polymerized unit of a normal dispersion polymerizable liquid crystal compound and a polymerization unit of a reverse dispersion polymerizable liquid crystal compound,the phase difference layer has ultraviolet absorptivity that transmittance for light having a wavelength of 385 nm is 3% or less, and {'br': None, 'i': Ra−Ri', 'Ri, 'Phase difference change ratio=100×()/\u2003\u2003[Equation A]'}, 'the phase difference layer has an absolute value of a phase difference change ratio according to Equation A below of 17% or lesswherein, Ri is the initial in-plane phase difference of the phase difference layer for a wavelength of 550 nm, and Ra is the in-plane phase difference of the phase difference layer for a wavelength of 550 nm after an endurance condition, where the endurance condition is a condition that the phase difference layer is allowed to stand at a temperature of 85° C. for 50 hours or more.2. A circularly polarizing plate comprisinga polarizer; anda phase difference layer formed on one side of the polarizer,wherein the phase difference layer comprises a polymerized unit of a normal dispersion polymerizable liquid crystal compound and a polymerization unit of a reverse dispersion polymerizable liquid crystal compound, andthe phase difference layer has ultraviolet absorptivity that transmittance for light having a wavelength of 385 nm is 3% or less, and does not comprise an ultraviolet absorber having a ...

BAND EDGE EMISSION ENHANCED ORGANIC LIGHT EMITTING DIODE UTILIZING CHIRAL LIQUID CRYSTALLINE EMITTER

Disclosed herein is a light emitting device and method of manufacturing such a device comprised of a series of photopolymerizable, chiral liquid crystalline layers that can be solvent cast on a substrate. The mixture of chiral materials in each successive layer may be blended in such a way that each layer has the same chiral pitch. Further the chiral materials in each layer may also be blended so that the ordinary and extraordinary refractive indices in each layer match the other layers such that the complete assembly of layers will optically function as a single relatively thick layer of chiral liquid crystal. The chiral nematic material in each layer can spontaneously adopt a helical structure with a helical pitch. The light emitting layers of the light emitting device can further comprise electroluminescent material that emits light into the band edge light propagation modes of the photonic crystal. 1. A light emitting device , comprising:a first hole transporting layer comprising a polymerized chiral nematic liquid crystal material that is doped with a p-dopant;a second hole transporting layer comprising a polymerized chiral nematic liquid crystal material;a light emitting layer comprising a polymerized chiral nematic liquid crystalline material;an electron transporting layer comprising a polymerized chiral nematic liquid crystal material;wherein said polymerized chiral nematic liquid crystal materials in each layer have an extraordinary refractive index and an ordinary refractive index and a difference between said extraordinary and ordinary refractive indices of the polymerized chiral nematic liquid crystal material in each of said layers varies by less than 10% from a difference between said extraordinary and ordinary refractive indices of the polymerized chiral nematic liquid crystal material in each other of said layers.2. The light emitting device of wherein the extraordinary refractive indices of the polymerized chiral nematic liquid crystal material in ...

LIQUID CRYSTAL DISPLAY DEVICE AND LIQUID CRYSTAL COMPOSITION

The means concerns a liquid crystal display device including a first substrate, a second substrate and a liquid crystal composition having a nematic phase, which is placed between these substrates, wherein the liquid crystal composition includes at least one compound selected from the group of compounds represented by formula (1) as a first component: 1. A liquid crystal display device including a first substrate , a second substrate and a liquid crystal composition having a nematic phase , which is placed between these substrates , wherein a flicker rate is in the range of 0% to 1%.4. The liquid crystal display device according to claim 2 , wherein the ratio of the first component of the liquid crystal composition is in the range of 20% by weight to 95% by weight based on the weight of the liquid crystal composition.7. The liquid crystal display device according to claim 5 , wherein the ratio of the second component of the liquid crystal composition is in the range of 5% by weight to 80% by weight based on the weight of the liquid crystal composition.11. The liquid crystal display device according to claim 8 , wherein the ratio of the additive component of the liquid crystal composition is in the range of 0.03% by weight to 10% by weight based on the weight of the liquid crystal composition.12. The liquid crystal display device according to claim 1 , wherein in the liquid crystal composition claim 1 , the maximum temperature of a nematic phase is 70° C. or higher claim 1 , the optical anisotropy (measured at 25° C.) at a wavelength of 589 nanometers is 0.07 or more claim 1 , and the dielectric anisotropy (measured at 25° C.) at a frequency of 1 kHz is −2 or less.13. The liquid crystal display device according to claim 1 , wherein an operating mode of the liquid crystal display device is a TN mode claim 1 , an ECB mode claim 1 , an OCB mode claim 1 , an IPS mode claim 1 , a VA mode claim 1 , an FFS mode or an FPA mode claim 1 , and a driving mode of the liquid ...

LIQUID CRYSTAL COMPOSITION

The present invention provides a liquid crystal composition, comprising one or more compounds shown as formula I and one or more compounds shown as formula II, and the liquid crystal composition comprising a compound shown as formula II-A: 9. A liquid crystal display element or a liquid crystal display claim 1 , wherein the liquid crystal display element or the liquid crystal display comprises the liquid crystal composition according to ; the display element or display is an active matrix display element or display or a passive matrix display element or display.10. The liquid crystal display element or liquid crystal display according to claim 9 , wherein the active matrix display element or display is a TN-TFT or IPS-TFT liquid crystal display element or display. The present invention relates to the technical field of liquid crystal display, particularly to a liquid crystal composition, and a liquid crystal display element or a liquid crystal display including the liquid crystal composition.At represent, liquid crystal compounds, with the application field thereof being expanded more and more widely, may be applied to various types of display devices, optical devices, sensors and so on. There are various kinds of liquid crystal compounds applied to the field of display, wherein a nematic liquid crystal compound is applied the most widely. The nematic liquid crystal has been applied to passive TN and STN matrix displays and systems with TFT active matrix.For the application field of TFT-LCD (Thin-Film Transistor Technology), in recent years, although the market has been very huge and the technology has been gradually matured, people also have constantly improving requirement to the display technology, especially to aspects of achieving fast response and reducing a driving voltage to reduce a power consumption. As one of the important optoelectronic materials of the liquid crystal display, a liquid crystal material plays an important role in improving the performance ...

LIQUID-CRYSTAL OPTICAL MODULATION ELEMENT

The liquid crystal light modulator includes a first substrate () and a second substrate () disposed between two polarizers, and a pair of electrode structures (). The substrates include homeotropic alignment films () and (), and at least one of the substrates has a function of aligning C-directors of liquid crystal molecules along one direction. The one direction forms an azimuth angle in the range of 35 to 55 degrees with the direction of the electric field generated by the pair of electrode structures (). A liquid crystal composition layer () contains a ferroelectric liquid crystal composition having a chiral smectic C phase or a liquid crystal composition that has an achiral smectic C phase and negative dielectric anisotropy. Light transmittance is modulated by the electric field generated by the electrode structures () changing the birefringence index of the liquid crystal composition layer (). 1. A liquid crystal light modulator , comprising:two polarizers that have planes of polarization perpendicular to each other;a first substrate and a second substrate disposed between the polarizers and holding a liquid crystal composition layer therebetween, at least one of the first and second substrates being transparent; anda pair of electrode structures that generate an electric field generally parallel to a substrate face of at least one of the first substrate and the second substrate, at least one of substrates being transparent,wherein at least one of the first substrate and the second substrate has a homeotropic alignment film and has a function of aligning C-directors of liquid crystal molecules along one direction,the one direction forms an azimuth angle in the range of 35 to 55 degrees with the direction of the electric field generated by the pair of electrode structures,the liquid crystal composition layer contains a ferroelectric liquid crystal composition having a chiral smectic C phase or a liquid crystal composition that has an achiral smectic C phase and ...

LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY DEVICE

Provided are a liquid crystal composition satisfying at least one of characteristics such as high maximum temperature, low minimum temperature, small viscosity, suitable optical anisotropy and large negative dielectric anisotropy, or having a suitable balance regarding at least two of the characteristics; and an AM device including the composition. The liquid crystal composition has negative dielectric anisotropy, and contains a specific compound having large negative dielectric anisotropy as a first component, a specific compound having low minimum temperature as a second component and a specific compound having small viscosity as a third component, and the composition may contain a specific compound having high maximum temperature or small viscosity as a fourth component, a specific compound having negative dielectric anisotropy as a fifth component or a specific compound having a polymerizable group as an additive component. 4. The liquid crystal composition according to claim 1 , wherein a proportion of the first component is in the range of 5% by weight to 60% by weight claim 1 , and a proportion of the second component is in the range of 5% by weight to 50% by weight claim 1 , based on the weight of the liquid crystal composition.7. The liquid crystal composition according to claim 5 , wherein a proportion of the fourth component is in the range of 5% by weight to 40% by weight based on the weight of the liquid crystal composition.10. The liquid crystal composition according to claim 8 , wherein a proportion of the fifth component is in the range of 5% by weight to 50% by weight based on the weight of the liquid crystal composition.14. The liquid crystal composition according to claim 11 , wherein a proportion of addition of the additive component is in the range of 0.03% by weight to 10% by weight based on the weight of the liquid crystal composition.15. A liquid crystal display device claim 1 , including the liquid crystal composition according to .16. ( ...

Liquid crystal compound having benzothiophene, liquid crystal composition and liquid crystal display device

Provided is a liquid crystal compound that has high stability to heat, light and so forth, a high clearing point, low minimum temperature of a liquid crystal phase, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy, a suitable elastic constant and excellent compatibility with other liquid crystal compounds, a liquid crystal composition containing the compound and a liquid crystal display device including the composition. The compound is represented by formula (1). For example, R 1 is alkyl having 1 to 10 carbons, alkoxy having 1 to 9 carbons or alkenyl having 2 to 10 carbons; R 2 is alkyl having 1 to 10 carbons, alkoxy having 1 to 9 carbons or alkenyl having 3 to 10 carbons; ring A 1 is 1,4-cyclohexylene or 1,4-phenylene; ring A 2 is 1,4-cyclohexylene or 1,4-phenylene; Z 1 and Z 2 are a single bond; Z 3 is —O— or a single bond; and L 1 is F, CF 3 or CF 2 H.

Liquid-crystalline mixtures

The present application relates to mixtures which have liquid-crystalline properties. The application furthermore relates to the use of the mixtures in devices which regulate the transmission of light through an area element.

Thiophene compound, liquid-crystalline medium and liquid-crystal display comprising the same

and the use thereof in an electro-optical display, particularly in an active-matrix display based on the IPS or FFS effect, to displays of this type which contain a liquid-crystalline medium of this type, and to the compounds of formula T and their use for the improvement of the transmission and/or response times of a liquid-crystalline medium which contains one or more additional mesogenic compounds.

Liquid crystal composition containing a five-membered heterocyclic ring, reverse-mode polymer dispersed liquid crystal element, and associated selectively dimmable device

Described herein are liquid crystal compositions containing a five-member heterocyclic ring that can allow for the adjustment of their refractive indices under the application of an electric field. In addition, selectively dimmable reverse-mode polymer dispersed liquid crystal elements and devices using the aforementioned compositions are also described, which are transparent when no voltage is applied and opaque when a voltage is applied.

LIQUID CRYSTAL COMPOSITION, LIQUID CRYSTAL DISPLAY ELEMENT AND LIQUID CRYSTAL DISPLAY

A liquid crystal composition including: one or two or more compounds selected from the group consisting of compounds represented by the general formula (i), and one or more compounds selected from the group consisting of compounds represented by the general formula (ii). In the general formulae, Rand Rindependently represent an alkyl group having 1 to 8 carbon atoms, and one —CH— group or two or more —CH— groups which are not adjacent to each other in the alkyl group may be independently substituted by —CH═CH—, —C≡C—, —O—, —CO—, —COO— or —OCO, and a hydrogen atom in the alkyl group may be substituted by a fluorine atom or a chlorine atom, mrepresents 0 or 1, X, X, Xand Xindependently represent a hydrogen atom, fluorine atom or chlorine atom, and Xrepresents a hydrogen atom, a fluorine atom, a chlorine atom, a cyano group, —CFor —OCF. 2. The liquid crystal composition according to claim 1 , wherein Xin the general formula (ii) represents a fluorine atom.3. The liquid crystal composition according to claim 1 , wherein min the general formula (ii) represents 1.4. The liquid crystal composition according to claim 1 , wherein at least two of Xto Xin the general formula (ii) represent a fluorine atom.7. A liquid crystal display element using the liquid crystal compound according to .8. A liquid crystal display element for IPS mode claim 1 , OCB mode claim 1 , ECB mode claim 1 , VA mode claim 1 , or FFS mode using the liquid crystal compound according to .9. A liquid crystal display using the liquid crystal display element according to . The present invention relates to a nematic liquid crystal composition which exhibits a positive value for the dielectric anisotropy (Δ∈) and is useful as a liquid crystal display material, as well as a liquid crystal display element and a liquid crystal display which use this composition.Liquid crystal display elements are used not only in watches and electronic calculators, but also in various measurement instruments, panels for vehicles, ...

LIQUID CRYSTAL COMPOSITION, AND LIQUID CRYSTAL DISPLAY ELEMENT USING THE SAME

A liquid crystal composition including one or two or more compounds selected from the group consisting of compounds represented by general formula (i), wherein mis 2, one or two or more compounds selected from the group consisting of compounds represented by general formula (ii) shown below, a compound represented by formula (1.3) and/or a compound represented by formula (2.2) shown in below. 19.-. (canceled)11. The liquid crystal composition according to claim 10 , wherein the liquid crystal composition includes two or more compounds represented by general formula (ii).13. The liquid crystal composition according to claim 10 , wherein the liquid crystal composition includes one or two or more compounds represented by general formula (ii) in which mrepresents 1 as the compound represented by general formula (ii).16. A liquid crystal display element using the liquid crystal composition according to .17. A liquid crystal display element for IPS claim 10 , OCB claim 10 , ECB claim 10 , VA claim 10 , VA-IPS claim 10 , or FFS mode using the liquid crystal composition according to .18. A liquid crystal display using the liquid crystal display element according to .19. A liquid crystal display using the liquid crystal display element according to . The present invention relates to a nematic liquid crystal composition which exhibits a positive value for the dielectric anisotropy (Δ∈) and is useful as a liquid crystal display material, as well as a liquid crystal display element using the nematic liquid crystal composition.Liquid crystal display elements are used not only in watches and electronic calculators, but also in various measurement instruments, panels for vehicles, word processors, electronic organizers, printers, computers, televisions, clocks and advertising display boards and the like. Representative examples of the liquid crystal display method include the TN (twisted nematic) method, the STN (super twisted nematic) method, and methods using TFT (thin film ...

LIQUID-CRYSTAL COMPOUND, LIQUID-CRYSTAL COMPOSITION AND LIQUID-CRYSTAL DISPLAY DEVICE

Liquid-crystal compounds, liquid-crystal compositions, and liquid-crystal devices employing the same are provided. The liquid-crystal compound has a structure of Formula (I): 2. The liquid-crystal compound according to claim 1 , wherein Ris —OCHCF claim 1 , or —OCFCFCF.4. The liquid-crystal compound according to claim 1 , wherein Z claim 1 , Z claim 1 , and Zare independently single bond claim 1 , —CH— claim 1 , —COO— claim 1 , —OCO— claim 1 , —CFO— claim 1 , —OCF— claim 1 , —C≡C— claim 1 , or —CH═CH—.12. A liquid-crystal device claim 1 , comprising:{'claim-ref': {'@idref': 'CLM-00007', 'claim 7'}, 'the liquid-crystal composition according to .'} The application is based on, and claims priorities from China Application Serial Number 201410352442.2, filed on Jul. 23, 2014, and Taiwan Application Serial Number 104114861, filed on May. 11, 2015, the disclosure of which are hereby incorporated by reference herein in their entirety.The disclosure relates to a liquid-crystal compound, composition, and device employing the same and, more particularly, to a liquid-crystal compound with high dielectric anisotropy and low rotational viscosity, composition, and device employing the same.Among various flat-panel displays, the liquid-crystal display (LCD) has become the mainstream in the market because of its superior characteristics, such as light weight, low power consumption, no radiation, and full color image. As technologies used in optoelectronics and semiconductors have advanced, liquid-crystal displays with high resolution, rapid response time and high image quality have flourished accordingly. For example, active matrix liquid-crystal displays with thin-film transistors are generally substituted for passive matrix liquid-crystal displays (such as twisted nematic (TN) LCD, super twisted nematic (STN) LCD, or bistable twisted nematic (BTN) LCD). To fulfill the demand for wide viewing technology, the development of wide viewing LCD such as in-plane switching (IPS) LCD, ...

LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY DEVICE

To show a liquid crystal composition having at least one or a suitable balance regarding at least two of characteristics such as a short response time, a large voltage holding ratio, a low threshold voltage, a large contrast ratio, a long service life and a small flicker rate; and an AM device having characteristics such as a short response time, a large voltage holding ratio, a low threshold voltage, a large contrast ratio and a long service life. 2. The liquid crystal composition according to claim 1 , wherein a proportion of the first component is in the range of 3% by weight to 40% by weight based on the weight of the liquid crystal composition.5. The liquid crystal composition according to claim 3 , wherein a proportion of the second component is in the range of 10% by weight to 90% by weight based on the weight of the liquid crystal composition.8. The liquid crystal composition according to claim 6 , wherein a proportion of the third component is in the range of 10% by weight to 80% by weight based on the weight of the liquid crystal composition.12. The liquid crystal composition according to claim 9 , wherein a proportion of the additive component is in the range of 0.03% by weight to 10% by weight based on the weight of the liquid crystal composition.13. A liquid crystal display device claim 1 , including the liquid crystal composition according to .14. The liquid crystal display device according to claim 13 , wherein an operating mode in the liquid crystal display device includes an IPS mode claim 13 , a VA mode claim 13 , an FFS mode or an FPA mode claim 13 , and a driving mode in the liquid crystal display device includes an active matrix mode.15. A polymer sustained alignment mode liquid crystal display device claim 9 , wherein the liquid crystal display device includes the liquid crystal composition according to claim 9 , or the polymerizable compound in the liquid crystal composition is polymerized.16. The liquid crystal display device according to ...

POLYMERIZABLE COMPOUND AND OPTICAL ISOMER

The present invention provides a polymerizable compound having high storage stability without causing crystal precipitation when added to a polymerizable composition. The present invention also provides a polymerizable composition containing the compound. When the filmy polymer produced through polymerization of the polymerizable composition is irradiated with UV light, it hardly discolors or peels from substrate. Further, the present invention provides a polymer produced through polymerization of the polymerizable composition and an optically anisotropic body using the polymer. 4. The compound according to claim 2 , wherein in the formula (I-R) claim 2 , Sp each independently represents an alkylene group having 1 to 20 carbon atoms in which one —CH— or two or more of (—CH—)'s which are not adjacent to each other may be each independently substituted with —O— claim 2 , —COO— claim 2 , —OCO— claim 2 , —OCO—O— claim 2 , —CO—NH— claim 2 , —NH—CO— claim 2 , —CH═CH— or —C≡C—.5. A composition containing the compound of .6. A liquid crystal composition containing the compound of .7. A polymer obtained through polymerization of the composition of .8. An optically anisotropic body using the polymer of .9. Resins claim 1 , resin additives claim 1 , oils claim 1 , filters claim 1 , adhesives claim 1 , pressure-sensitive adhesives claim 1 , oils and fats claim 1 , inks claim 1 , medicines claim 1 , cosmetics claim 1 , detergents claim 1 , building materials claim 1 , wrapping or packaging materials claim 1 , liquid crystal materials claim 1 , organic EL materials claim 1 , organic semiconductor materials claim 1 , electronic materials claim 1 , display devices claim 1 , electronic devices claim 1 , communication instruments claim 1 , automobile parts claim 1 , airplane parts claim 1 , machine parts claim 1 , agricultural chemicals and foods using the compound of . The present invention relates to a compound having a polymerizable group, a polymerizable composition containing ...

LIQUID CRYSTAL COMPOUND HAVING BENZOPYRAN SKELETON, LIQUID CRYSTAL COMPOSITION, AND LIQUID CRYSTAL DISPLAY DEVICE

Shown are a liquid crystal compound satisfying at least one of physical properties such as high stability to heat and light, a high clearing point (or high maximum temperature), low minimum temperature of a liquid crystal phase, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy, a suitable elastic constant and satisfactory compatibility with other liquid crystal compounds, a liquid crystal composition containing the compound and a liquid crystal display device including the composition. A compound is represented by formula (1), a liquid crystal composition contains the compound, or the like. 5. The liquid crystal composition according to claim 3 , wherein claim 3 , in formula (1-1) claim 3 ,{'sup': 1', '2, 'Rand Rare independently alkyl having 1 to 8 carbons, alkoxy having 1 to 8 carbons or alkenyl having 2 to 8 carbons;'}{'sup': 1', '2, 'ring Aand ring Aare independently 1,4-cyclohexylene, 1,4-phenylene or 1,4-phenylene in which at least one hydrogen is replaced by fluorine;'}{'sup': 1', '2, 'sub': 2', '2', '2', '2, 'Zand Zare independently a single bond, —O—, —COO—, —OCO—, —CHO—, —OCH— or —CHCH—;'}X is hydrogen or fluorine;{'sub': '2', 'Y is —CO— or —CF—; and'}a and b are independently 0, 1 or 2, and a sum of a and b is 0, 1 or 2.16. The compound according to claim 15 , wherein claim 15 , in formula (1a-12) claim 15 , Ris alkoxy having 1 to 12 carbons claim 15 , and Ris alkyl having 1 to 12 carbons claim 15 , alkoxy having 1 to 12 carbons or alkenyl having 2 to 12 carbons.17. A liquid crystal display device claim 1 , including the liquid crystal composition according to . This application claims the priority benefit of Japan application serial no. 2016-144239, filed on Jul. 22, 2016. The entirety of the above-mentioned patent application is hereby incorporated by reference herein and made a part of this specification.The invention relates to a liquid crystal compound, a liquid crystal composition and a liquid crystal display device ...

COMPOUND HAVING ALKOXY GROUP OR ALKOXYALKYL GROUP, AND SATURATED SIX-MEMBERED RING, LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY DEVICE

Provided is a liquid crystal compound satisfying at least one of physical properties such as high stability to heat, light or the like, a high clearing point, low minimum temperature of a liquid crystal phase, small viscosity, suitable optical anisotropy and large dielectric anisotropy, a liquid crystal composition containing the compound, and a liquid crystal display device including the composition. 2. (canceled)4. The liquid crystal composition according to claim 1 , wherein a is 1.5. (canceled)6. (canceled)8. (canceled)10. (canceled)13. The liquid crystal composition according to claim 1 , further containing at least one of a polymerizable compound claim 1 , an optically active compound claim 1 , an antioxidant claim 1 , an ultraviolet light absorber claim 1 , a light stabilizer claim 1 , a heat stabilizer and an antifoaming agent.15. (canceled)17. The liquid crystal composition according to claim 14 , wherein a is 1.18. (canceled)19. (canceled)21. (canceled)25. The liquid crystal composition according to claim 14 , having a chiral nematic phase in a temperature of any of −20° C. to 70° C. claim 14 , wherein a helical pitch is 700 nanometers or less in at least part of the range of the temperature.26. The liquid crystal composition according to claim 14 , used for a device driven in an optically isotropic liquid crystal phase.27. A polymer-liquid crystal composite material claim 24 , obtained by polymerizing the liquid crystal composition according to and used for a device driven in an optically isotropic liquid crystal phase.28. An optical device claim 24 , having an electrode arranged on one or both substrates claim 24 , a liquid crystal medium arranged between the substrates claim 24 , and an electric field applying means for applying an electric field to the liquid crystal medium through the electrode claim 24 , wherein the optical device is prepared by using the liquid crystal composition according to as the liquid crystal medium claim 24 , or comprises a ...

Reactive mesogen and liquid crystal composition including the same

Provided are a reactive mesogen that may improve display quality of a liquid crystal display, and a liquid crystal composition including the same. The reactive mesogen is represented by the following Formula: where A 1 , A 2 , and A 3 are each independently a substituted or unsubstituted divalent hydrocarbon ring, or a substituted or unsubstituted divalent heterocycle, L 1 and L 2 are each independently a direct linkage, —O—, —S—, —CO—, —COO—, —OCOO—, —O(CH 2 ) k1 —, —S(CH 2 ) k1 —, —O(CF 2 ) k1 —, —S(CF 2 ) k1 —, —(CH 2 ) k1 —, —CF 2 CH 2 —, —(CF 2 ) k1 —, —CH═CH—, —CF═CF—, —C≡C—, —CH═CH—COO—, or —(CH 2 ) k1 —COO—(CH 2 ) k2 —O—, Z 1 and Z 2 are each independently a direct linkage, —O—, —S—, —CO—, —COO—, —OCOO—, —O(CH 2 ) m1 —, —S(CH 2 ) m1 —, —O(CF 2 ) m1 —, —S(CF 2 ) m1 —, —(CH 2 ) m1 —, —CF 2 CH 2 —, —(CF 2 ) m1 —, —CH═CH—, —CF═CF—, —C≡C—, —CH═CH—COO—, —(CH 2 ) m1 —COO—, —(CH 2 ) m1 —COO—(CH 2 ) m2 —O—, —CH—(S p —Pa)—, —CH 2 CH—(S p —Pa)—, or —(CH—(S p —Pa)—CH—(S p —Pa))—, Pa is a polymerizable group, B is an unsubstituted heterocycle, a substituted or unsubstituted crown ether group, or wherein T 1 and T 2 are each independently —OH, —CH 3 , —CF 3 , —CHF 2 , —CH 2 F, —CH 2 Br, —CHBr 2 , —CHCl 2 , or —CH 2 Cl.

COMPOUND HAVING POLYMERIZABLE GROUP, LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY DEVICE

Provided is a polar compound that has high chemical stability and high capability of aligning liquid crystal molecules, and has a large voltage holding ratio when used in a liquid crystal display device. 2. The compound according to claim 1 , wherein claim 1 , in the formula (1) claim 1 , Ris a group represented by formula (1a) or formula (1b).3. The compound according to claim 1 , wherein claim 1 , in the formula (1) claim 1 , d is 1 or 2 claim 1 , and a sum of c claim 1 , d and e is 1 claim 1 , 2 claim 1 , 3 or 4.10. A liquid crystal composition claim 1 , containing at least one compound according to .18. The liquid crystal composition according to claim 15 , further containing at least one of a polymerizable compound other than formula (1) and formula (16) claim 15 , a polymerization initiator claim 15 , a polymerization inhibitor claim 15 , an optically active compound claim 15 , an antioxidant claim 15 , an ultraviolet light absorber claim 15 , a light stabilizer claim 15 , a heat stabilizer and an antifoaming agent.19. A liquid crystal display device claim 10 , including at least one liquid crystal composition according to . The invention relates to a compound having a polymerizable group, a liquid crystal composition and a liquid crystal display device. More specifically, the invention relates to a compound simultaneously having a polymerizable group such as methacryloiloxy and a polar group such as a —OH group, a liquid crystal composition that contains the compound and has positive or negative dielectric anisotropy, and a liquid crystal display device including the composition.In a liquid crystal display device, a classification based on an operating mode for liquid crystal molecules includes a phase change (PC) mode, a twisted nematic (TN) mode, a super twisted nematic (STN) mode, an electrically controlled birefringence (ECB) mode, an optically compensated bend (OCB) mode, an in-plane switching (IPS) mode, a vertical alignment (VA) mode, a fringe field ...

OPTICAL FILM, POLARIZING PLATE, AND IMAGE DISPLAY DEVICE

An object of the present invention is to provide an optical film having an optically anisotropic layer having excellent durability, and a polarizing plate and an image display device using the same. This optical film of the present invention is an optical film at least having an optically anisotropic layer, in which the optically anisotropic layer is a layer obtained by polymerizing a polymerizable liquid crystal composition containing a predetermined liquid crystal compound, a predetermined mesogen compound, and a polymerization initiator, an I/O value of the liquid crystal compound is more than 0.56, and an I/O value of the mesogen compound is 0.56 or less. 2. The optical film according to claim 1 ,wherein the liquid crystal compound is a liquid crystal compound exhibiting reverse wavelength dispersion.3. The optical film according to claim 1 ,wherein a content of the mesogen compound is 4% by mass or more with respect to a total mass of the liquid crystal compound and the mesogen compound.4. The optical film according to claim 2 ,wherein a content of the mesogen compound is 4% by mass or more with respect to a total mass of the liquid crystal compound and the mesogen compound.5. The optical film according to claimwherein the liquid crystal compound is a liquid crystal compound represented by Formula (1) in which m is 1 or 2.6. The optical film according to claim 2 ,wherein the liquid crystal compound is a liquid crystal compound represented by Formula (1) in which m is 1 or 2.7. The optical film according to claim 3 ,wherein the liquid crystal compound is a liquid crystal compound represented by Formula (1) in which m is 1 or 2.8. The optical film according to claim 1 ,wherein the polymerization initiator is an oxime type polymerization initiator.9. The optical film according to claim 2 ,wherein the polymerization initiator is an oxime type polymerization initiator.10. The optical film according to claim 3 ,wherein the polymerization initiator is an oxime type ...

LIQUID CRYSTAL COMPOUNDS AND USE OF THE SAME IN LIQUID CRYSTAL MEDIUM AND DISPLAY DEVICE

Disclosed herein are novel liquid crystal compounds of formula I: 4. A liquid crystal medium claim 1 , comprising a compound as claimed in .10. The liquid crystal medium as claimed in claim 7 , wherein based on the total weight of said liquid crystal medium claim 7 , said compound of formula I is present in an amount of from 1 wt % to 40 wt % claim 7 , said compound of formula II is present in an amount of from 1 wt % to 70 wt % claim 7 , and said compound of formula III is present in an amount of from 10 wt % to 70 wt %.11. The liquid crystal medium as claimed in claim 10 , wherein based on the total weight of said liquid crystal medium claim 10 , said compound of formula I is present in an amount of from 1 wt % to 25 wt % claim 10 , said compound of formula II is present in an amount of from 20 wt % to 70 wt % claim 10 , and said compound of formula III is present in an amount of from 10 wt % to 60 wt %.12. An active matrix display device claim 4 , comprising a liquid crystal medium as claimed in . This application claims priority of Chinese Invention Patent Application No. 201810781430.X, filed on Jul. 17, 2018.The disclosure relates to a liquid crystal compound with an indanyl or indenyl group, and use of the same in the preparation of a liquid crystal medium and a liquid crystal display device.With the advancement of flat-panel display technology, the thin-film-transistor liquid-crystal display (TFT LCD) plays a leading role in the LCD field.TFT LCD is usually applied when a stringent requirement with respect to viewing angles is essential, such as in the aviation industry, aerospace industry, medical industry, graphic image processing, etc. However, the contrast ratio of the display might be significantly decreased when viewed off perpendicular, thereby limiting the application of the TFT LCD.At present, several techniques have been developed to achieve a wide viewing angle, such as: twisted nematic (TN) in combination with a wide film; vertical alignment (VA) ...

LIQUID-CRYSTALLINE MEDIUM

The invention relates to a liquid-crystalline medium comprising at least one compound of the formula I, 2. Liquid-crystalline medium according to claim 1 , characterised in that Rin formula I denotes a straight-chain alkyl radical claim 1 , in which claim 1 , in addition claim 1 , one or more CHgroups may be replaced by —CH═CH—.14. Liquid-crystalline medium according to claim 1 , characterised in that it comprises 1-30% by weight of one or more compounds of the formula I.15. Liquid-crystalline medium according to claim 1 , characterised in that it additionally comprises one or more UV stabilisers and/or antioxidants.16. Liquid-crystalline medium according to claim 1 , characterised in that it additionally comprises one or more reactive mesogens (RMs).17. Process for the preparation of a liquid-crystalline medium according to claim 1 , characterised in that one or more compounds of the formula I are mixed with at least one further mesogenic compound and optionally with at least one RM and/or one or more additive(s).18. Use of a liquid-crystalline medium according to for electro-optical purposes.19. Use of the liquid-crystalline medium according to in TN claim 18 , STN claim 18 , TN-TFT claim 18 , OCB claim 18 , IPS claim 18 , PS-IPS claim 18 , FFS claim 18 , PS-FFS displays claim 18 , shutter spectacles for 3D effects claim 18 , LC lenses and positive VA displays.20. Electro-optical liquid-crystal display containing a liquid-crystalline medium according to .21. Electro-optical liquid-crystal display of claim 20 , which is a TN claim 20 , STN claim 20 , TN-TFT claim 20 , OCB claim 20 , IPS claim 20 , PS-IPS claim 20 , FFS claim 20 , PS-FFS display claim 20 , shutter spectacle for 3D effect claim 20 , LC lense and positive VA display. The present invention relates to a liquid-crystalline medium (LC medium), to the use thereof for electro-optical purposes, and to LC displays containing this medium.Liquid crystals are used principally as dielectrics in display devices, ...

Optical element and light guide element

An object of the present invention is to provide: an optical element in which incident light can be transmitted or reflected at an angle in the predetermined direction and the wavelength dependence of the amount of transmitted light or reflected light is small; and an optical element including the optical element. The optical element according to the present invention comprises: an optically-anisotropic layer that is formed using a composition including a liquid crystal compound and an infrared absorbing colorant, in which the optically-anisotropic layer has a liquid crystal alignment pattern in which a direction of an optical axis derived from the liquid crystal compound changes while continuously rotating in at least one in-plane direction, and an absorption of the infrared absorbing colorant in a wavelength range of 700 to 2000 nm in a minor axis direction is higher than an absorption of the infrared absorbing colorant in a wavelength range of 700 to 2000 nm in a major axis direction.

LIQUID CRYSTAL DISPLAY DEVICE

The present invention provides a liquid crystal display device that includes a first substrate having an electrode A formed thereon; a second substrate having an electrode B formed thereon and being disposed to oppose the first substrate; and a liquid crystal layer disposed between the first substrate and the second substrate and substantially vertically aligned with respect to the first and second substrates when no voltage is applied between electrodes, in which the electrode A has a fishbone pattern having a branched portion, and a space (S μm) between adjacent branches of branches of the fishbone pattern and an inter-substrate distance (d μm) between the first substrate and the second substrate satisfy a relationship of formula (1): 1. A liquid crystal display device comprising:a first substrate having an electrode A formed thereon;a second substrate having an electrode B formed thereon and being disposed to oppose the first substrate; anda liquid crystal layer disposed between the first substrate and the second substrate and substantially vertically aligned with respect to the first and second substrates when no voltage is applied between electrodes, {'br': None, 'i': d−', 'S', 'd+, '(0.6)/1.25<<(1.1)/1.25\u2003\u2003formula (1)'}, 'wherein the electrode A has a fishbone pattern having a branched portion, and a space (S μm) between adjacent branches of branches of the fishbone pattern and an inter-substrate distance (d μm) between the first substrate and the second substrate satisfy a relationship of formula (1)2. The liquid crystal display device according to claim 1 , wherein d is smaller than 3.6.3. The liquid crystal display device according to claim 1 , wherein S is smaller than 3.4.4. The liquid crystal display device according to claim 1 , wherein a value of a product Δn-d of a refractive-index anisotropy (Δn) of the liquid crystal layer and d is 320 to 360.5. The liquid crystal display device according to claim 1 , wherein Δn is 0.089 to 0.360.6. The ...