Liquid crystal compound having ferrielectric phase and liquid crystal composition

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United States of America Patent

PATENT NO 5728864
SERIAL NO

08631092

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Abstract

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A liquid crystal compound of the formula (1) ##STR1## wherein R is a linear alkyl group having 6 to 12 carbon atoms, both X and Y are hydrogen atoms or one of X and Y is a fluorine atom and the other is a hydrogen atom, A is --CF.sub.3 or --C.sub.2 F.sub.5, m is an integer of 2 to 4, n is an integer of 2 to 4, and C* is an asymmetric carbon, having a ferrielectric phase in its phase sequence, or a ferrielectric liquid crystal composition containing the liquid crystal compound of the formula (1) having a ferrielectric phase, may be injected between substrates provided with nonlinear active elements, such as thin film transistors or diodes formed on each pixel, to form an active matrix liquid crystal display device.

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Patent Owner(s)

Patent OwnerAddress
MITSUBISHI GAS CHEMICAL COMPANYTOKYO JAPAN

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ito, Maki Tsukuba, JP 50 326
Johno, Masahiro Tsukuba, JP 57 299
Matsumoto, Takahiro Tsukuba, JP 196 1869
Mineta, Hiroshi Tsukuba, JP 17 102
Motoyama, Yuki Tsukuba, JP 19 97
Yui, Tomoyuki Tsukuba, JP 48 327

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