Electro-optical liquid crystal display
    51.
    发明授权
    Electro-optical liquid crystal display 失效
    电光液晶显示

    公开(公告)号:US5965060A

    公开(公告)日:1999-10-12

    申请号:US989771

    申请日:1997-12-12

    摘要: An electro-optical liquid crystal display with active-matrix addressing, in which the liquid-crystal layer has a homeotropic or tilted homeotropic alignment in the switched-off state and which contains a liquid-crystalline medium of negative dielectric anisotropy. The medium containsA) 30-70% by weight of two or more compounds of the formula I ##STR1## and B) 20-50% by weight of two or more compounds of the formula II ##STR2## in which R.sup.1, R.sup.2, ##STR3## and m are as defined in claim 1. The displays are particularly capable of operation based on the vertically-aligned cholesteric or nematic (VAC or VAN) effect.

    摘要翻译: 一种具有有源矩阵寻址的电光液晶显示器,其中液晶层在关闭状态下具有垂直或倾斜的垂直取向,并且包含具有负介电各向异性的液晶介质。 该介质包含A)30-70重量%的两种或更多种式I化合物和B)20-50%重量的两种或更多种式II化合物,其中R 1,R 2和m如 显示器特别能够基于垂直取向的胆甾型或向列(VAC或VAN)效应来操作。

    Liquid-crystalline medium
    58.
    发明授权
    Liquid-crystalline medium 有权
    液晶介质

    公开(公告)号:US06287648B1

    公开(公告)日:2001-09-11

    申请号:US09468846

    申请日:1999-12-22

    IPC分类号: C09K1930

    摘要: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, containing at least one compound of the general formula I in which R1 and R2 are each, independently of one another, an alkyl or alkenyl radical having 1 to 12 carbon atoms which is unsubstituted, monosubstituted by CN or CF3 or at least monosubstituted by halogen, where one or more CH2 groups in these radicals may also, in each case independently of one another, be replaced by —O—, —S—, —CO—, —CO—O—, —O—CO— or —O—CO—O— in such a way that O atoms are not linked directly to one another and u is 1 or 2.

    摘要翻译: 本发明涉及一种基于正介电各向异性的极性化合物的混合物的液晶介质,其含有至少一种通式Iin的化合物,其中R 1和R 2各自彼此独立地为具有1个 至12个碳原子,其未被取代,被CN或CF 3单取代或至少被卤素单取代,其中这些基团中的一个或多个CH 2基团也可以彼此独立地被-O - , - S- ,-CO-,-CO-O-,-O-CO-或-O-CO-O-,使得O原子彼此不直接连接并且u是1或2。

    Liquid-crystalline medium
    60.
    发明授权
    Liquid-crystalline medium 失效
    液晶介质

    公开(公告)号:US6083573A

    公开(公告)日:2000-07-04

    申请号:US29390

    申请日:1998-02-26

    摘要: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds having positive dielectric anisotropy, characterized in that it comprises one or more compounds of the general formula I ##STR1## in which R is H, an alkyl or alkenyl radical having 1 to 15 carbon atoms which is unsubstituted, monosubstituted by CN or CF.sub.3 or at least monosubstituted by halogen, it also being possible for one or more CH.sub.2 groups in these radicals to be replaced, in each case independently of one another, by --O--, --S-- ##STR2## --CO--, --CO--O--, --O--CO-- or --O--CO--O--in such a way that O atoms are not linked directly to one another,Y is F, Cl, halogenated alkyl, alkenyl or alkoxy having 1 to 6 carbon atoms, andL.sup.1 is F.

    摘要翻译: PCT No.PCT / EP96 / 03636 371日期1998年2月26日 102(e)1998年2月26日PCT PCT 1996年8月19日PCT公布。 出版物WO97 / 09395 日期1997年3月13日本发明涉及一种基于具有正介电各向异性的极性化合物的混合物的液晶介质,其特征在于其包含一种或多种通式I的化合物,其中R为H,烷基或烯基 具有1至15个碳原子的基团,其是未取代的,被CN或CF 3单取代或至少被卤素单取代,也可以在这些基团中的一个或多个CH 2基团彼此独立地被 - O-,-S-CO-,-CO-O-,-O-CO-或-O-CO-O-,使得O原子彼此不直接连接,Y是F,Cl, 卤代烷基,烯基或具有1至6个碳原子的烷氧基,而L1为F.