Optically active compounds, smectic liquid crystal compositions
containing them and smectic liquid crystal display devices
    1.
    发明授权
    Optically active compounds, smectic liquid crystal compositions containing them and smectic liquid crystal display devices 失效
    光学活性化合物,含有它们的近晶液晶组合物和近晶液晶显示装置

    公开(公告)号:US4764619A

    公开(公告)日:1988-08-16

    申请号:US842265

    申请日:1986-03-21

    摘要: An optically active compound having the formula: ##STR1## wherein each of Z and Z' is a single bond, --COO--, --OCO--, --CH.sub.2 CH.sub.2 --, --OCH.sub.2 -- or --CH.sub.2 O--, R is an alkyl group having from 1 to 12 carbon atoms, an alkoxyl group having from 1 to 12 carbon atoms, a cyano group or a halogen atom, each of rings A and B is a 1,4-di-substituted phenylene group or a trans-1,4-di-substituted cyclohexylene group, n is 0 or 1, X is ##STR2## wherein * indicates an optical center, and R' is an alkyl group having from 2 to 12 carbon atoms or ##STR3## where R" is a hydrogen atom, an alkyl or alkoxy group having from 1 to 12 carbon atoms, provided that when X is ##STR4## R is the alkyl group or the alkoxy group.

    摘要翻译: 具有下式的光学活性化合物:其中Z和Z'各自为单键,-COO - , - OCO - , - CH 2 CH 2 - , - OCH 2 - 或-CH 2 O-,R为烷基 具有1至12个碳原子的基团,具有1至12个碳原子的烷氧基,氰基或卤素原子,环A和B各自为1,4-二取代的亚苯基或反式-1 ,4-二取代的亚环己基,n为0或1,X为光学中心,R为具有2至12个碳原子的烷基或 其中R“是氢原子,具有1至12个碳原子的烷基或烷氧基,条件是当X是R 1是烷基或烷氧基时。