Chisso Corporation

Chisso Petrochemical Corporation

Sagami Chemical Research Center

Kaken Pharmaceutical Company, Ltd.

Jnc Corporation

Jnc Petrochemical Corporation

Sagami Chemical Research

Atsuko Fujita

Shuichi Matsui

Etsuo Nakagawa

Yasuyuki Goto

Kazutoshi Miyazawa

Yuichi Onji

Tomoyuki Kondo

Shinichi Sawada

Norio Tamura

Fusayuki Takeshita

Kenji Hirai

Makoto Ushioda

Hiroyuki Takeuchi

Shoin Nagato

Masahiro Yokota

Hiroaki Hirose

Norikatsu Hattori

Noriyuki Ohnishi

Hiroshi Sato

Norihisa Hachiya

Hiroyuki Tekeuchi

Yasuhiro Kubo

Hiroaki Fujita

Yasuko Sekiguchi

Koichi Shibata

Tokifumi Masukawa

Takamasa Fuchikami

Kouki Sagou

Kouki Sago

Nobumasa Nakamura

Kazumi Nakamura

Naoko Ota

Disclosed is a liquid crystal display element which is composed of a pair of substrates () at least one of which is transparent. The liquid crystal display element comprises, between the pair of substrates, a transparent electrode (), an aligning agent () that contains at least reactive monomers and/or oligomers (), and a liquid crystal layer. The liquid crystal display element is characterized in that an alignment layer is obtained by polymerizing the reactive monomers or oligomers contained in the aligning agent, and the liquid crystal layer is composed of a liquid crystal composition that contains a compound () having at least one benzene ring in each molecule, said benzene ring containing at least one fluorine atom and being disubstituted by halogen atoms.

Liquid crystal display element, liquid crystal composition, aligning agent, method for producing liquid crystal display element, and use of liquid crystal composition

A compound represented by the following formula (1): wherein Rand Rare, for example alkyl; T, Tand Tare independently tetrahydropyran-2,5-diyl or tetrahydropyran-3,6-diyl; Aand Aare, for example 1,4-cyclohexylene; Z, Z, Zand Zare, for example, a single bond; i, j, k, m and n are, for example 0 or 1; and i+j+k+m+n is, for example 2 or 3.

Tetrahydropyran compound, liquid crystal, composition and liquid crystal display device containing the liquid crystal composition

A liquid crystal composition having a negative dielectric anisotropy and including a first component, which is a liquid crystal compound having a chroman ring, in which two hydrogens are replaced by fluorine, a second component, which is a liquid crystal compound having phenylene in which two hydrogens are replaced by fluorine and chlorine, and a particular third component, and a liquid crystal display device including the liquid crystal composition.

Liquid crystal composition and liquid crystal display device

A dihydrocoumarin ring-containing compound of the invention is represented by the following formula (1): wherein R represents hydrogen or an alkyl; Ato Aeach represents 1,4-cyclohexylene or 1,4-phenylene; Zto Zeach represents a single bond, &#x2014;(CH)&#x2014;, &#x2014;CHO&#x2014;, &#x2014;OCH&#x2014;, &#x2014;CFO&#x2014;, &#x2014;OCF&#x2014;, &#x2014;CH&#x2550;CH&#x2014;, &#x2014;CF&#x2550;CF&#x2014;, &#x2014;C&#x2261;C&#x2014;, &#x2014;(CH)&#x2014;, &#x2014;O(CH)O&#x2014;, &#x2014;(CH)CFO&#x2014;, &#x2014;(CH)OCF&#x2014;, &#x2014;CFO(CH)&#x2014;, &#x2014;OCF(CH)&#x2014;, &#x2014;CH&#x2550;CH&#x2014;CHO&#x2014;, or &#x2014;OCH&#x2014;CH&#x2550;CH&#x2014;; X represents hydrogen, fluorine, chlorine, &#x2014;CN, &#x2014;CF, &#x2014;CHF, &#x2014;CHF, &#x2014;OCF, &#x2014;OCHF, or &#x2014;OCHF; G represents oxygen or sulfur; and n and m each represents 0, 1, or 2.

Dihydrocoumarin derivative, liquid crystal composition containing the same, and liquid crystal display device

The present invention relates to a compound having a chroman ring, which has good thermal and optical stability, adequate optical anisotropy, adequate dielectric anisotropy and superior compatibility with other liquid crystal compounds, a liquid crystal composition comprising the compound, and a liquid crystal device comprising the composition. A compound represented by formula (1) below is provided: where Ris hydrogen or C-Calkyl; Ris halogen, &#x2014;CN, alkyl (at least one hydrogen of which is replaced by halogen), alkenyl (at least one hydrogen of which may be replaced by halogen), or alkoxy (at least one hydrogen of which may be replaced by halogen); each of A, A, Aand Ais independently 1,4-cyclohexylene, 1,4-cyclohexenylene or 1,4-phenylene, in which any &#x2014;CH&#x2014; may be replaced by &#x2014;O&#x2014; or &#x2014;S&#x2014;, any &#x2014;CH&#x2550; may be replaced by &#x2014;N&#x2550; and any hydrogen may be replaced by halogen, methyl or &#x2014;CF; each of Z, Z, Zand Zis independently a single bond or C-Calkylene; each of h, k, m and n is independently 0, 1 or 2, the sum of h, k, m and n being 1, 2 or 3; and Q is one of the group represented by formulas (q1), (q2) and (q3) below: where Xis hydrogen, halogen, methyl, ethyl, methoxy, ethoxy, &#x2014;CF, &#x2014;CFH, &#x2014;CFH, &#x2014;OCF, &#x2014;OCFH, or &#x2014;OCFH; and each of Y, Y, Y, Yand Yis independently hydrogen, halogen or methyl.

Liquid crystal compound having chroman ring, liquid crystal composition comprising the compound and liquid crystal display device comprising the composition

Liquid crystal compounds exhibiting negative anisotropy of permittivity

Aniline derivatives, liquid-crystal composition containing the same, and liquid-crystal display element

Liquid-crystal alkenyltolan derivative, liquid-crystal composition, and liquid-crystal display element

Novel liquid crystalline compounds which have a wide temperature range of liquid crystal phase, are excellent in miscibility with other liquid crystalline compounds, have a low viscosity, are low in toxicity, and are safe; liquid crystal compositions comprising the liquid crystalline compound; and liquid crystal display devices fabricated by using the composition are provided; and the compounds are cyclohexane derivatives expressed by the general formula (1)

Cyclohexane derivatives, liquid-crystal composition, and liquid-crystal display element

Conjugated nitrile derivative, liquid crystal composition, and liquid

A propiolonitrile derivative of formula (I) ##STR1## wherein n1 and n2 each independently stand for 0 or 1; A1, A2 and A3 each independently represent a 1,4-phenylene, a 1,4-phenylene substituted by one or more fluorine atoms, a trans-1,4-cyclohexylene, a 1,3-dioxane-2,5-diyl or a 1,3-pyrimidine-2,5-diyl; Z1, Z2 and Z3 each independently represent a single bond, ethylene, ethenylene, ethynylene, carbonyloxy, oxycarbonyl, methyleneoxy, oxymethylene, 1,4-butylene or 1,4-butenylene; R represents a saturated, aliphatic hydrocarbyl radical of 1-10 carbons, an unsaturated, aliphatic hydrocarbyl radical of 2-10 carbons, a saturated or unsaturated, aliphatic hydrocarbyl radical of 1-10 carbons containing one or more ether linkages (--O--) in the chain and a saturated or unsaturated, fluoro-substituted aliphatic hydrocarbyl radical of 1-10 carbons containing one or more fluorine atoms in the chain; X1 and X2 each independently represent H, F or Cl; provided that at least one of X1 and X2 is F or Cl, when both n1 and n2 are 0, Z1 represents a single bond, ethylene, carbonyloxy or oxycarbonyl and R represents alkyl or alkoxy; or when n1 is 1, n2 is 1 or 0, Z1 and Z2 each independently represent a single bond or ethylene, Z3 represents ethylene and R represents alkyl or alkoxy.

Propiolonitrile derivatives and liquid crystal compositions comprising

Acrylonitrile derivative, liquid crystal composition, and liquid crystal

Liquid crystalline compound and liquid crystal composition containing

A novel liquid crystalline compound having a high elastic constant ratio (K.sub.33 /K.sub.11) and an improved solubility thereof in other liquid crystal materials, at low temperatures, and a liquid crystal composition containing the same are provided. The liquid crystalline compound is expressed by the formula (1): ##STR1## wherein Q represents CF.sub.3, CF.sub.2 H or CFH.sub.2 ; A.sub.1, A.sub.2 and A.sub.3 each independently represent trans-1,4-cyclohexylene group, 1,4-phenylene group, wherein one or more hydrogen atoms on its six-membered ring may be replaced by F, Cl or CN, pyridine-2,5-diyl group or 1,3-pyrimidine-2,5-diyl; ring B represents 1,4-phenylene group or trans-1,4-cyclohexylene group; Z.sub.1, Z.sub.2 and Z.sub.3 each independently represent covalent bond, --C.dbd.C--, --C.tbd.C--, --OCO--, --COO--, --CH.sub.2 O--, --OCH.sub.2 --, --(CH.sub.2).sub.2 -- or --(CH.sub.2).sub.4 --; l and m each independently represent an integer of 0 to 5; o and p each independently represent 0 or 1; L.sub.1 and L.sub.2 each independently represent H, F or Cl; L.sub.3 represents halogen atom, CN, CF.sub.3, CF.sub.2 H, CFH.sub.2, OCF.sub.3, OCF.sub.2 H, H or an alkyl group of 1 to 10 carbon atoms or an alkenyl group of 2 to 10 carbon atoms wherein optional methylene groups (--CH.sub.2 --) in the alkyl group or the alkenyl group each independently may be replaced by --O--, --S--, --CO--, --OCO-- or --COO--, but two or more methylene groups should not be continuedly replaced.

Liquid crystalline compound, liquid crystal composition and liquid

A novel liquid crystal material having a carbon chain containing a conjugated diene as a terminal substituent of the molecule and exhibiting superior characteristics is provided, which is a diene derivative expressed by the formula (I) ##STR1## wherein R and R' each independently represent 1-5C alkyl; A and B each independently represent 1,4-cyclohexylene or 1,4-phenylene; n is 0 or 1; m is an integer of 0 to 2; X and X' each independently represent H atom or F atom when A is 1,4-phenylene or represent H atom when A is 1,4-cyclohexylene; Y is alkyl, halogen or CN, alkoxy, methyl group substituted by 1-3 halogen atoms or trihaloalkoxy when A is 1,4-phenylene, or represent alkyl, alkoxy, methyl group substituted by 1-3 halogen atoms or trihaloalkoxy when A is 1,4-cyclohexylene; and R and R' are not simultaneously alkyl chain of 4 or more carbon atoms. The compound of the present invention has a generally usable viscosity and a high NI point and a high elastic constant ratio; hence the liquid crystal composition, particularly the liquid crystal composition for STN, containing the compound of the present invention exhibits improved characteristics as compared with the conventional ones.

Diene derivative

Growing community of inventors

Chiba, Japan

Atsuko Fujita