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    Liquid crystal display device and phase plate therefor
    1.
    发明授权
    Liquid crystal display device and phase plate therefor 失效
    液晶显示装置及其相位板

    公开(公告)号：US5220447A

    公开(公告)日：1993-06-15

    申请号：US494551

    申请日：1990-03-16

    申请人： Hisao Yokokura ,  Teruo Kitamura ,  Akio Mukoh ,  Junichi Hirakata ,  Yasuhiko Kando ,  Isoji Sakai ,  Yasuo Fujimura ,  Noboru Masutani

    发明人： Hisao Yokokura ,  Teruo Kitamura ,  Akio Mukoh ,  Junichi Hirakata ,  Yasuhiko Kando ,  Isoji Sakai ,  Yasuo Fujimura ,  Noboru Masutani

    IPC分类号： G02F1/133 ,  B01J19/00 ,  B29C41/24 ,  C08J5/18 ,  G02B5/30 ,  G02F1/1335 ,  G02F1/13363 ,  G02F1/137 ,  G02F1/139

    CPC分类号： G02B5/3083 ,  B29C55/00 ,  B29D11/0074 ,  G02F1/13363 ,  G02F1/133636 ,  B29K2105/0079 ,  G02F1/1397 ,  G02F2202/40 ,  G02F2413/01

    摘要： A liquid crystal display device comprising: a liquid crystal display element formed by holding, between two substrates at least one of which has a light-permeable electrode, a liquid crystal layer in which liquid crystal molecules of a nematic liquid crystal having positive dielectric anisotropy and containing an optically active substance has a helical axis perpendicular to the substrates between the substrates and are helically oriented, and the liquid crystal molecules between the substrates have a twist angle of 180 to 270 degrees, and a phase plate formed by stacking water surface development films of an organic polymer with changing the orientation axes thereof at a constant angle, wherein the contrast ratio, a ratio between brightness in white display and brightness in black display, is remarkably excellent over that of a device obtained by stacking plastic films, and the transmissivity, a quotient of background brightness and light source brightness, is equivalent to that of a conventional double layer structure liquid crystal display device.

    摘要翻译： 一种液晶显示装置，包括：液晶显示元件，其通过在其中至少一个具有透光性电极的两个基板之间保持其液晶层，其中具有正介电各向异性的向列型液晶的液晶分子和 含有光学活性物质的螺旋轴具有垂直于基板之间的基板的螺旋轴并且被螺旋取向，并且基板之间的液晶分子具有180至270度的扭曲角度，并且通过将水表面显影膜 的有机聚合物以恒定角度改变其取向轴，其中对比度，白色显示中的亮度与黑色显示中的亮度之间的比例，显着优于通过堆叠塑料膜获得的装置的透射率 ，背景亮度和光源亮度的商相当于a 常规双层结构液晶显示装置。

    Liquid crystal polyimide alignment free of scattering domains
    5.
    发明授权
    Liquid crystal polyimide alignment free of scattering domains 失效
    液晶聚酰亚胺排列没有散射域

    公开(公告)号：US4781439A

    公开(公告)日：1988-11-01

    申请号：US5899

    申请日：1987-01-22

    申请人： Hisao Yokokura ,  Tadao Nakata ,  Susumu Era ,  Yasuo Hanawa ,  Kishiro Iwasaki ,  Teruo Kitamura ,  Akio Mukoh ,  Toshikazu Narahara ,  Yasuhiko Kando ,  Shunichi Numata ,  Kooji Fujisaki

    发明人： Hisao Yokokura ,  Tadao Nakata ,  Susumu Era ,  Yasuo Hanawa ,  Kishiro Iwasaki ,  Teruo Kitamura ,  Akio Mukoh ,  Toshikazu Narahara ,  Yasuhiko Kando ,  Shunichi Numata ,  Kooji Fujisaki

    IPC分类号： G02F1/133 ,  C08G73/10 ,  G02F1/1337 ,  G02F1/139

    CPC分类号： C08G73/1039 ,  C08G73/105 ,  G02F1/133723 ,  G02F1/1397 ,  Y10T428/1014 ,  Y10T428/1023

    摘要： A liquid crystal display element comprising a pair of substrates, a pair of electrodes provided on the respective substrates, at least one of which is transparent and a liquid crystal layer disposed between said substrates, the liquid crystal layer comprising a nematic liquid crystal, which exhibits a positive dielectric constant anisotropy and contains an optically active substance, the liquid crystal moleccule orientation direction in the liquid crystal layer is twisted in the range of 200.degree. to 250.degree. from the one substrate surface toward the other substrate surface so as to form a helical structure therein. A polyimide orientation film is provided between the electrodes and the liquid crystal layer. The polyimide orientation film is one made of a polyimide prepared by reacting a diamine compound having a long-chain hydrocarbon group or a diamine compound having a trifluoromethyl group with a tetracarboxylic dianhydride and causes a pretilt angle of at least 3.degree. relative to the nematic liquid crystal molecules. The liquid crystal display element of the present invention is free from a scattering domain.

    摘要翻译： 一种液晶显示元件，包括一对基板，一对电极，设置在各个基板上，其中至少一个是透明的，并且液晶层设置在所述基板之间，所述液晶层包括向列型液晶， 正介电常数各向异性，并含有光学活性物质，液晶层中的液晶分子取向方向从一个基板表面向另一个基板表面扭曲在200°至250°的范围内，从而形成螺旋 结构。 在电极和液晶层之间设置聚酰亚胺取向膜。 聚酰亚胺取向膜是由具有长链烃基的二胺化合物或具有三氟甲基的二胺化合物与四羧酸二酐反应制备的聚酰亚胺制成的，并且相对于向列液体产生至少3度的预倾角 晶体分子。 本发明的液晶显示元件没有散射域。

    Ferroelectric liquid crystal device
    7.
    发明授权
    Ferroelectric liquid crystal device 失效
    铁电液晶装置

    公开(公告)号：US5020883A

    公开(公告)日：1991-06-04

    申请号：US263982

    申请日：1988-10-27

    申请人： Susumu Era ,  Kishiro Iwasaki ,  Hisao Yokokura ,  Yasuo Hanawa ,  Katsumi Kondo ,  Tadao Nakada ,  Teruo Kitamura ,  Akio Mukoh

    发明人： Susumu Era ,  Kishiro Iwasaki ,  Hisao Yokokura ,  Yasuo Hanawa ,  Katsumi Kondo ,  Tadao Nakada ,  Teruo Kitamura ,  Akio Mukoh

    IPC分类号： C08G73/00 ,  C08G73/10 ,  G02F1/133 ,  G02F1/1337

    CPC分类号： G02F1/133711 ,  C09K19/0225 ,  C09K19/2021

    摘要： A ferroelectric liquid crystal device which comprises at least one pair of counterposed substrates, a ferroelectric liquid crystal material provided between the substrates, means for applying an electric field to the liquid crystal material and provided at the substrates, an alignment-controlling layer provided on the surface on the liquid crystal material side of each of the substrates, and a sealing member at the peripheral edges of the substrates, the alignment-controlling layer being a film of an organic polymer whose .beta. dispersion temperature is higher than the curing temperature of a sealant for the sealing member, preferably at least 200.degree. C., has a good alignment state of ferroelectric liquid crystal molecules achieved by cooling alone without any application of an electric field and has good display qualities such as a high contrast.

    摘要翻译： 一种强电介质液晶装置，包括至少一对相对的基板，设置在基板之间的铁电液晶材料，用于向液晶材料施加电场并设置在基板上的装置，设置在基板上的对准控制层 每个基板的液晶材料侧的表面以及基板的周缘处的密封构件，该取向控制层是其分散温度高于密封剂的固化温度的有机聚合物的膜 对于密封构件，优选至少200℃，具有通过单独冷却实现的铁电液晶分子的良好取向状态，而不施加电场，并且具有良好的显示质量，例如高对比度。