Cyclohexane derivative
    2.
    发明授权
    Cyclohexane derivative 失效
    环己烷衍生物

    公开(公告)号:US5382379A

    公开(公告)日:1995-01-17

    申请号:US132917

    申请日:1993-10-07

    摘要: A novel liquid crystal material having an alkenyl group at the end of the molecule, and having a low viscosity is provided. When the compound is added to a display element it is able to reduce the threshold voltage of the resulting display element. The compound is expressed by the formula (I), ##STR1## wherein X is a F atom, a trifluoromethyl group, a trifluoromethoxy group or a difluoromethoxy group, --A-- is 1,4-cyclohexylene or 1,4-phenylene, --B-- is 1,4-cyclohexylene, l is 0, 1 or 2, m is 0, 1 or 2, l+m.gtoreq.1, Z is --CH.sub.2 CH.sub.2 -- or single bond, n is an integer of 0 to 4, R is a H atom or a linear or branched alkyl group of 1-7C, and when R is an alkyl group, the double bond has a trans-configuration. The compounds of the present invention are suitable as liquid crystal material for STN display element, and further are chemically stable; hence it is possible to prepare a composition having a superior multiplex characteristic and capable of effecting a low voltage drive.

    摘要翻译: 提供了一种在分子末端具有烯基并具有低粘度的新型液晶材料。 当将化合物添加到显示元件时,能够降低所得到的显示元件的阈值电压。 该化合物由式(I),其中X是F原子,三氟甲基,三氟甲氧基或二氟甲氧基的式(I)表示,-A-是1,4-亚环己基或1,4-亚环己基, 亚苯基,-B-是1,4-亚环己基,l是0,1或2,m是0,1或2,1 + m> = 1,Z是-CH 2 CH 2 - 或单键,n是 0〜4,R为H原子或1-7C的直链或支链烷基,当R为烷基时,双键具有反式构型。 本发明的化合物适用于STN显示元件的液晶材料,并且化学稳定; 因此可以制备具有优异的多重特性并能够进行低电压驱动的组合物。