Dainippon Ink and Chemicals, Incorporated

Hitachi, Ltd.

Kawamura Institute of Chemical Research

Katsuhiko Morita

Hisato Sato

Yoshi Arai

Yutaka Fujita

Haruyoshi Takatsu

Kazuhisa Toriyama

Tamihito Nakagomi

Masayuki Tazume

Kazuo Kimura

Takasi Yamaki

Masanao Ohzeki

A nematic liquid crystal composition composed of (i) at least one compound of the general formula ##STR1## wherein R.sub.1 represents n-C.sub.m H.sub.2m+1, R.sub.2 represents n-C.sub.q H.sub.2q+1 -O, and m and q are integers of 1 to 10, (ii) at least one compound selected from the group consisting of nematic liquid crystalline compounds having positive dielectric anisotropy and homologs thereof, and (iii) as an optional ingredient, at least one compound selected from the group consisting of nematic liquid crystalline compounds having negative dielectric anisotropy and homologs thereof. This liquid crystal composition is colorless and chemically stable and has superior multiplexing drive characteristics. These properties render it useful as a display element.

Nematic liquid crystals for display devices

A nematic liquid crystal composition comprising (I) 4-n-valeryloxy-4'-cyanobiphenyl, (II) 4-n-caproyloxy-4'-cyanobiphenyl and (III) 4'-cyanophenyl-4-n-heptylbenzoate, and either (IV) 4'-cyanophenyl-4-n-butylbenzoate or (V) 4'-cyanophenyl-4-n-nonylbenzoate, said composition having a crystal-nematic transition temperature of -40.degree. to -20.degree. C and a nematic-isotropic transition temperature of 50.degree. to 65.degree. C.

Nematic liquid crystal composition

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Urawa, Japan

Katsuhiko Morita