申请人:Chisso Corporation
公开号:US04784791A1
公开(公告)日:1988-11-15
A novel liquid crystal compound represented by the general formula (I): ##STR1## (wherein R is a straight or branched alkyl or alkoxy group having 1 to 20 carbon atoms, R* is an optically active alkyl group having 4 to 20 carbon atoms, X is a fluorine atom or a chlorine atom, and n is 1 or 2), a liquid crystal composition containing at least one liquid crystal compound of the general formula (I), a chiral smectic liquid crystal composition containing at least one liquid crystal compound of the general formula (I), and an optical switching element utilizing the chiral smectic liquid crystal composition containing at least one liquid crystal compound of the general formula (I) are described.
一种由一般式(I)表示的新型液晶化合物:##STR1##(其中R是具有1至20个碳原子的直链或支链烷基或烷氧基,R*是具有4至20个碳原子的光学活性烷基,X是氟原子或氯原子,n为1或2),至少含有一种一般式(I)的液晶化合物的液晶组合物,含有至少一种一般式(I)的液晶化合物的手性亚相液晶组合物,以及利用含有至少一种一般式(I)的液晶化合物的手性亚相液晶组合物的光学开关元件。