Liquid crystal compounds, liquid crystal medium and liquid crystal display
    61.
    发明授权
    Liquid crystal compounds, liquid crystal medium and liquid crystal display 有权
    液晶化合物,液晶介质和液晶显示器

    公开(公告)号:US06569505B2

    公开(公告)日:2003-05-27

    申请号:US09773673

    申请日:2001-02-02

    Abstract: The instant invention relates to liquid crystal media comprising a strongly dielectrically positive component A, preferably comprising isothiocyanate compounds, most preferably compounds of formula I, as given in the text, and a further dielectrically positive component B, preferably comprising terminally polar substituted bi- or terphenyl compounds, most preferably comprising compounds of formula II, as given in the text, further to novel isothiocyanato compounds as well as to liquid crystal displays comprising these media, in particular to PDLC display and most particular to holographic PDLC displays. The instant invention further relates to compounds of formula I wherein the parameters are as as specified in the text.

    Abstract translation: 本发明涉及液晶介质,其包含强介导的正性组分A,优选包括异硫氰酸酯化合物,最优选如本文中给出的式I化合物和另外的反应性阳性组分B,其优选包含末端极性取代的双 三联苯化合物,最优选包含本文给出的式II化合物,进一步涉及新型异硫氰酸酯化合物以及包含这些介质的液晶显示器,特别是PDLC显示器,最特别地涉及全息PDLC显示器。 本发明还涉及式I化合物,其中参数如文中所述。

    Liquid-crystal display
    64.
    发明授权
    Liquid-crystal display 失效
    液晶显示器

    公开(公告)号:US5725796A

    公开(公告)日:1998-03-10

    申请号:US461737

    申请日:1995-06-05

    Abstract: The invention relates to a liquid-crystal display based on a twisted nematic cell and having two substrates provided with electrode layers and alignment layers thereon and, with a frame, forming a cell, a nematic liquid-crystal mixture having positive dielectric anisotropy present in the cell, and a twist angle of the liquid-crystal layer in the cell with a value of between 0.degree. and 600.degree. from alignment layer to alignment layer,whose liquid-crystal mixture is based on medium-polarity compounds of the SFM type which are selected so that the liquid-crystal mixture has a viscosity at 20.degree. C. of less than 30 mm.sup.2 s.sup.-1 and has a value of K/.DELTA..di-elect cons..ltoreq.1.5 for the quotient of the Frank constant K ##EQU1## and the dielectric anisotropy .DELTA..di-elect cons. .DELTA..di-elect cons.=.di-elect cons..vertline.-.di-elect cons..sub..perp.when used in a TN cell (.nu.=.pi./2, d/p

    Abstract translation: 本发明涉及一种基于扭转向列单元的液晶显示器,具有在其上设置有电极层和取向层的两个基板,并且具有形成单元的框架,存在于该介质各向异性中的正的介电各向异性的向列型液晶混合物 电池中的液晶层和从配向层到取向层的值在0〜600度之间的电池中的液晶层的扭转角,其液晶混合物基于SFM型的中极性化合物 选择为使得液晶混合物在20℃下的粘度小于30mm 2 s -1,并且具有值+ E,ovs K + EE / DELTA +531 <= 1.5,对于Frank的商 常数+ E,ovs K + EE 和介电常数各向异性DELTA +531 DELTA +531 = + 531 | - + 531当在TN单元中使用ORTHOGONAL(nu = pi / 2,d / p << 1)+ E,ovs K + EE / DELTA +531

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