Chisso Corporation

Chisso Petrochemical Corporation

Hiroaki Kawashukuda

Hitoshi Yamamoto

Kanetsugu Terashima

Yasuhiro Kubo

Shuichi Goto

Yoshitaka Tomi

Motoki Yanai

A liquid crystal composition having a nematic phase that includes three components, wherein the first component is at least one compound selected from the group of compounds represented by formula (1), the second component is at least one compound selected from the group of compounds represented by formulas (2-1) to (2-3), and the third component is at least one compound selected from the group of compounds represented by formula (3): wherein R, Rand Rare each independently alkyl having 1 to 12 carbons or alkenyl having 2 to 12 carbons; Ris fluorine, alkyl having 1 to 12 carbons or alkenyl having 2 to 12 carbons; Ris fluorine, chlorine, alkyl having 1 to 12 carbons or alkenyl having 2 to 12 carbons; Ris alkenyl having 2 to 12 carbons; Yis fluorine, chlorine or trifluoromethoxy; X, X, Xand Xare each independently hydrogen or fluorine; and one of Xand Xis fluorine, and the other is hydrogen.

Liquid crystal composition and liquid crystal display device

Liquid crystal medium and electro-optic liquid crystal displays

Liquid crystal composition and liquid crystal displays

A liquid crystal material for a STN display device having a low viscosity, steep electro-optical response characteristics, and a small temperature dependence of a threshold voltage is provided by a LC composition comprising:

Liquid crystal composition and a liquid crystal display device

A guest-host liquid crystal is provided by adding a quinophthalone group pigment or an anthraquinone group pigment as a non-azoic group dichroic pigment, to a host liquid crystal composition composed mainly of a halogenated benzene derivative, and having a high voltage-holding ratio of .DELTA..di-elect cons. of 4.5 to 7.5. By combining a host liquid crystal composition composed mainly of a halogenated benzene derivative and having a high voltage-holding ratio of .DELTA..di-elect cons. of 4.5 to 7.5, with a dichroic pigment having a specified, molecular structure, there is exhibited an effectiveness that it is possible to obtain a guest-host liquid crystal active matrix display element of 3.3V drive having stability under high temperature.

Liquid crystal composition and liquid crystal display element

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Chiba, Japan

Hiroaki Kawashukuda