Takasago International Corporation

Semiconductor Energy Laboratory Co., Ltd.

Hiroko Konuma

Hiroshi Sugiyama

Toshimitsu Hagiwara

Hitoshi Kondo

Misao Yagi

Mika Tadokoro

Shunpei Yamazaki

Toshimitsu Konuma

Akira Mase

Akio Yamaguchi

Mamoru Yamada

Shigeru Mitsuhashi

Minzo Sakaguchi

A ferroelectric liquid crystal device is described. The device comprises a pair of substrates, an electrode arrangement formed on the inside surface of the substrates, an orientation control surface provided on the inside surface of one of said substrates, and a blended ferroelectric liquid crystal disposed between the substrates. By suitably preparing the liquid crystal, multi-micro-domains are formed in the liquid crystal. By virtue of the multi-micro-domains, the contrast ratio and the response speed are significantly improved.

Ferroelectric liquid crystal device

A ferroelectric liquid crystal composition exhibiting a chiral smectic C phase, in which the tilt angle with an electric field applied is from 12.degree. to 18.degree. and the tilt angle during memory is from 8.degree. to 15.degree., and a liquid crystal display device are disclosed. The composition has high memory effects, high display contrast, and high rate of reponse.

Ferroelectric liquid crystal composition and liquid crystal display

A fluorine-containing optically active compound represented by formula (I): ##STR1## wherein R.sub.1 represents a straight chain alkyl or alkoxy group having from 6 to 14 carbon atoms or a 4-alkylphenyl or 4-alkoxyphenyl group having from 8 to 12 carbon atoms; R.sub.2 represents a straight chain alkyl group having from 1 to 8 carbon atoms; C.sup.* represents an asymmetric carbon atoms; and X represents a hydrogen atom or a fluorine atom, provided that X represents a fluorine atom when R.sub.1 contains a phenyl group, and a liquid crystal composition containing the same are disclosed. The compound (I) has large spontaneous polarization and low viscosity to achieve a fast response time. In the N.sup.* phase of the compound (I), the helical pitch has small temperature dependence.

Fluorine-containing optically active compound and liquid crystal

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Tokyo, Japan

Hiroko Konuma