Ferroelectric liquid crystal composition

Details Ferroelectric liquid crystal composition Ferroelectric liquid crystal composition

1988-11-25

1991-11-12

Maples, John S.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

25229901, 25229965, 25229966, 25229963, C09K 1934, C09K 1952, C09K, C09K

Patent

active

050645684

ABSTRACT:
A ferroelectric liquid crystal composition is here provided which contains at least one chiral compound having an optical activity site group represented by the general formula (I) ##STR1## wherein R.sup.1 is a straight-chain or branched alkyl group or alkoxy group having 1 to 18 carbon atoms, and * indicates an asymmetric carbon atom, and at least one non-chiral compound having a smectic C phase, a smectic I phase, a smectic F phase, a smectic G phase, a smectic H phase, a smectic J phase or a smectic K phase. This composition has quick response properties and assumes an SC* phase in an extensive temperature range inclusive of room temperature. Furthermore, by using this composition, an optical switching element having quick responsiveness can be obtained.

REFERENCES:
patent: 4744918 (1988-05-01), Heppke et al.
patent: 4824597 (1989-04-01), Kano
patent: 4826621 (1989-05-01), Terashima et al.
patent: 4882083 (1989-11-01), Terashima et al.
patent: 4886622 (1989-12-01), Miyazawa et al.
patent: 4892393 (1990-01-01), Terashima et al.
patent: 4911863 (1990-03-01), Sage et al.
patent: 4931208 (1990-06-01), Furukawa et al.

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