申请人:Chisso Corporation
公开号:EP0325796A1
公开(公告)日:1989-08-02
A liquid crystalline compound and a liquid crystal composition containing the compound usable for liquid crystal display devices are provided, which liquid crystalline compound is expressed by the formula
wherein R1 is H or 1-20C alkyl or alkenyl wherein one -CH2- group or two -CH2- groups not adjacent to each other may be substituted by -0-; the position and number of the double bond may be optionally chosen; A1, A2 and A3 each are
and the H of the
may be substituted by F, Cℓ or methyl; B1 and B2 each are -CH2CH2-, -CH20-, -OCH2 or a single bond; n is 0 or 1; and m is 0-20.
本发明提供了一种可用于液晶显示设备的液晶化合物和含有该化合物的液晶组合 物,该液晶化合物由式表示
其中 R1 为 H 或 1-20C 烷基或烯基,其中一个 -CH2- 基团或两个不相邻的 -CH2- 基团可被 -0- 取代;双键的位置和数目可任选;A1、A2 和 A3 分别为
的 H
B1 和 B2 分别为-CH2CH2-、-CH20-、-OCH2 或单键;n 为 0 或 1;m 为 0-20。