Nematic liquid crystal mixtures and a matrix liquid crystal display
    5.
    发明授权
    Nematic liquid crystal mixtures and a matrix liquid crystal display 失效
    向列液晶混合物和矩阵液晶显示器

    公开(公告)号:US06649088B1

    公开(公告)日:2003-11-18

    申请号:US09615737

    申请日:2000-07-13

    IPC分类号: C09K1912

    摘要: A nematic liquid crystal mixture having a positive dielectric anisotropy &Dgr;∈ of at least +4 and a birefringence &Dgr;n of at least 0.12, characterized in that the mixtures comprises one or more components having the core structure wherein L1, L2, Y and Z are each independently of one another H or F, one of Q1 and Q2 is 1,4-phenylene, 3-fluoro-1,4-phenylene or 3,5-difluoro-1,4-phenylene and the other residue Q1 or Q2 is —CH2CH2—, —CH2CH2CH2CH2— or—if at least one of L1, L2, Y and Z denotes F—also a single bond, whereby this core structure can be optionally further fluorinated in the benzene rings.

    摘要翻译: 具有至少+4的正介电各向异性Δε和至少为0.12的双折射Deltan的向列型液晶混合物,其特征在于,所述混合物包含一种或多种具有核心结构的组分,其中L 1,L 2, Y和Z各自独立地为H或F,Q 1和Q 2中的一个为1,4-亚苯基,3-氟-1,4-亚苯基或3,5-二氟-1,4 - 亚苯基和其余残基Q 1或Q 2是-CH 2 CH 2 - , - CH 2 CH 2 CH 2 CH 2 - 或 - 如果L 1,L 2,Y和Z中的至少一个表示F-也是单键 由此该核心结构可任选地进一步在苯环中氟化。

    Liquid-crystalline medium
    8.
    发明授权
    Liquid-crystalline medium 失效
    液晶介质

    公开(公告)号:US5616284A

    公开(公告)日:1997-04-01

    申请号:US453355

    申请日:1995-05-30

    IPC分类号: C09K19/30 C09K19/52 G02F1/13

    摘要: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, characterized in that it contains one or more compounds of the general formula I ##STR1## in which X is fluorine, chlorine, CF.sub.3, OCF.sub.3 or OCHF.sub.2, one of the radicals 1.sup.1 and 1.sup.2 is fluorine, the other radical 1.sup.1 or 1.sup.2 is hydrogen and R is alkyl, oxaalkyl, fluoroalkyl or alkenyl, in each case having up to 7 carbon atoms.

    摘要翻译: 本发明涉及一种基于正介电各向异性极性化合物的混合物的液晶介质,其特征在于其含有一种或多种通式I的化合物,其中X为氟,氯,CF 3,OCF 3 或OCHF 2,基团11和12之一是氟,另一个基团11或12是氢,R是烷基,氧杂烷基,氟烷基或烯基,在每种情况下具有至多7个碳原子。