Ferroelectric liquid crystal composition with improved driving v

Details Ferroelectric liquid crystal composition with improved driving v Ferroelectric liquid crystal composition with improved driving v

1993-04-19

1994-03-08

Stoll, Robert L.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

25229963, 25229967, 359103, C09K 1934, C09K 1930, C09K 1920, G02F 113

Patent

active

052924530

ABSTRACT:
A ferroelectric chiral smectic liquid crystal composition, comprising: at least one optically active compound represented by the following formula (II): ##STR1## wherein R.sub.3 denotes a linear or branched alkyl group having 1-18 carbon atoms capable of having a substituent; X.sub.3 denotes a single bond, ##STR2## Z.sub.1 denotes a single bond or ##STR3## and m is 1-12; at least one compound represented by the following formula (III): ##STR4## wherein R.sub.4 and R.sub.5 respectively denote a linear or branched alkyl group having 1-18 carbon atoms capable of having a substituent, at lease one of R.sub.4 and R.sub.5 being optically active; X.sub.4 denotes a single bond, ##STR5## and X.sub.5 denotes a single bond, ##STR6## and at least one compound represented by the following formula (I) or (IV): ##STR7## wherein R.sub.1 and R.sub.2 respectively denote a linear or branched alkyl group having 1-18 carbon atoms capable of having a substituent of C.sub.1 -C.sub.12 alkoxy group; X.sub.1 and X.sub.2 respectively denote a single bond, point and non-selected ##STR8## wherein R.sub.6 and R.sub.7 respectively denote a linear or branched alkyl group having 1-18 carbon atoms capable of having a substituent; X.sub.6 and X.sub.7 respectively denote a single bond, ##STR9## Z.sub.2 denotes ##STR10## or a single bond; ##STR11## respectively denote ##STR12## denotes ##STR13## with the proviso that at least one of ##STR14## is ##STR15##

REFERENCES:
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patent: 4479885 (1984-10-01), Mukoh et al.
patent: 4542230 (1985-09-01), Gray et al.
patent: 4798680 (1989-01-01), Nohira et al.
patent: 4834904 (1989-05-01), Krouse et al.
patent: 4911863 (1990-03-01), Sage et al.
patent: 4917821 (1990-04-01), Mori et al.

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