Smectic C liquid crystal composition and a liquid crystal displa

Details Smectic C liquid crystal composition and a liquid crystal displa Smectic C liquid crystal composition and a liquid crystal displa

1996-01-24

1997-08-19

Kelly, C. H.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

349184, C09K 1934, G02F 113

Patent

active

056584920

ABSTRACT:
A composition containing a smectic C compound, having a .DELTA..epsilon. of negative value and enabling to effect a high speed response; a ferroelectric chiral smectic C liquid crystal composition using the same; and a ferroelectric liquid crystal display device using the ferroelectric chiral smectic C liquid crystal composition are provided,
which composition containing a smectic C compound comprises at least one compound expressed by the formula (I) ##STR1## wherein R.sup.1 and R.sup.2 each represent different linear alkyl groups of 1 to 9 C, and
at least one compound-expressed by the formula (II) ##STR2## wherein R.sup.3 and R.sup.4 each represent the same or different linear alkyl groups of 1 to 18 C and X is H or F.

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patent: 5034151 (1991-07-01), Shinjo et al.
patent: 5109291 (1992-04-01), Inaba
patent: 5143642 (1992-09-01), Krause et al.
patent: 5200109 (1993-04-01), Iwaki et al.
patent: 5250221 (1993-10-01), Yamashita et al.

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