Supertwisted nematic liquid crystal displays
    7.
    发明授权
    Supertwisted nematic liquid crystal displays 失效
    超扭曲向列型液晶显示器

    公开(公告)号:US06440506B1

    公开(公告)日:2002-08-27

    申请号:US09443433

    申请日:1999-11-19

    IPC分类号: C09K1902

    摘要: The invention relates to supertwist liquid-crystal displays (STN-LCDs) having short switching times and good steepnesses and angle dependencies, and to the novel nematic liquid-crystal mixtures used therein, which comprise compounds having a 3,4,5-trifluorophenyl group together with compounds of formula I wherein R3 is an alkenyl group with 2 to 7 C atoms, R4 is an optionally fluorinated alkyl, alkoxy, alkenyl or alkenyloxy group with 1 to 12 C atoms, wherein one or two non-adjacent CH2 groups can be replaced by —O—, —CH═CH—, —CO—, —OCO— or —COO— in such a manner that O atoms are not directly adjacent to one another, or, in case m=1, R4 can also be Q—Y, Q is CF2, OCF2, CFH, OCFH or a single bond, Y is F or Cl, L1 and L2 are each independently H or F, and m is 0 or 1.

    摘要翻译: 本发明涉及具有短切换时间和良好陡度和角度依赖性的超扭曲液晶显示器(STN-LCD)及其中所用的新型向列型液晶混合物,其包括具有3,4,5-三氟苯基 与式I化合物一起使用,其中R 3是具有2至7个C原子的烯基,R 4是具有1至12个C原子的任选氟化的烷基,烷氧基,烯基或烯氧基,其中一个或两个不相邻的CH 2基团可以被 -O-,-CH = CH-,-CO-,-OCO-或-COO-,使得O原子彼此不直接相邻,或者在m = 1的情况下,R 4也可以是QY, Q是CF 2,OCF 2,CFH,OCFH或单键,Y是F或Cl,L 1和L 2各自独立地为H或F,且m为0或1。