Ferroelectric liquid crystal mixture and liquid crystal device u

Details Ferroelectric liquid crystal mixture and liquid crystal device u Ferroelectric liquid crystal mixture and liquid crystal device u

1994-04-26

1995-08-01

Wu, Shean

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

25229901, 359104, C09K 1934, G02F 113

Patent

active

054378141

ABSTRACT:
A ferroelectric liquid crystal mixture containing at least one chiral compound, having negative dielectric anisotropy and exhibiting a chiral smectic C phase includes at least one compound selected from the group consisting of a compound represented by the following general Formula I and a compound represented by the following general Formula II: ##STR1## where R.sup.1 and R.sup.2 are the same or different straight-chain or branched chain alkyl groups having 1 to 15 carbon atoms; X.sup.1 is a single bond, --O--, --COO--, or --OCO--; X.sup.2 is --O-- or --OCO--; Y is --COO-- or --CH.sub.2 O--; A and B are independently a group including a six membered ring which can be substituted by halogen, a cyano group, a lower alkoxy group, or a fluorine-containing alkyl group; and Z is a single bond, --COO--, or --OCO--.

REFERENCES:
patent: 5296616 (1994-03-01), Namekawa et al.
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