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    Electromagnetic shield plate
    1.
    发明授权
    Electromagnetic shield plate 失效
    电磁屏蔽板

    公开(公告)号：US06399879B1

    公开(公告)日：2002-06-04

    申请号：US09427740

    申请日：1999-10-27

    申请人： Kayoko Ueda ,  Hajime Kuwahara ,  Toshiya Inoue ,  Masakazu Shirakawa

    发明人： Kayoko Ueda ,  Hajime Kuwahara ,  Toshiya Inoue ,  Masakazu Shirakawa

    IPC分类号： H05K900

    CPC分类号： H05K9/0096 ,  H01J2211/446

    摘要： An electromagnetic shield plate comprising a geometric pattern having a line width of 10 &mgr;m to 80 &mgr;m and a line interval of 50 to 250 mesh on a surface of a transparent substrate, provides good visibility and excellent electromagnetic shielding, and is easy to manufacture and permits the fabrication of a large-size plate in a simple manner.

    摘要翻译： 在透明基板的表面上具有线宽为10〜80μm，线间隔为50〜250目的几何图形的电磁屏蔽板，具有良好的可视性和优异的电磁屏蔽性，容易制造和许可 以简单的方式制造大尺寸的板。

    Optically anisotropic film
    7.
    发明授权
    Optically anisotropic film 失效
    光学各向异性薄膜

    公开(公告)号：US5730899A

    公开(公告)日：1998-03-24

    申请号：US533856

    申请日：1995-09-26

    申请人： Toshihiro Ohnishi ,  Kayoko Ueda ,  Masato Kuwabara

    发明人： Toshihiro Ohnishi ,  Kayoko Ueda ,  Masato Kuwabara

    IPC分类号： C09K19/38 ,  G02B5/30 ,  G02F1/13363 ,  C09K19/52 ,  G02F1/133

    CPC分类号： C09K19/3866 ,  G02B5/3016 ,  G02F1/13363

    摘要： An optically anisotropic film comprising a liquid crystal composition having twisted nematic alignment, characterized in that the helical axis of twisted nematic alignment is substantially parallel to the direction normal to the film plane, and the liquid crystal composition shows a cholesteric phase, contains at least one liquid crystal oligomer selected from the linear or cyclic liquid crystal oligomers (A) such as obtained from reaction of a vinyl monomer having a specific cholesterol group and pentamethylcyclopentasiloxane, and is defined by the fact that when the thickness of the film is represented by d (.mu.m) and the helical pitch of the twisted nematic phase is represented by P (.mu.m), d.gtoreq.3.times.P and P.ltoreq.0.3 .mu.m or P.gtoreq.0.8 .mu.m, wherein when the numbers of the recurring units (I) and (II) in one molecule of the liquid crystal oligomer (A) are supposed to be n and n', respectively, n and n' are each an integer of 1 to 20 and satisfy the relations of 4.ltoreq.n+n'.ltoreq.21 and n: n'=20:1 to 1:20, and the terminal group of the recurring unit (II) of the liquid crystal oligomer (A) is polymerized. This optically anisotropic film is capable of providing a liquid crystal display device with smaller viewing angle dependency of contrast or display color.

    摘要翻译： 一种光学各向异性膜，包括具有扭曲向列取向的液晶组合物，其特征在于，所述扭曲向列取向的螺旋轴基本上平行于与所述膜平面垂直的方向，并且所述液晶组合物显示胆甾型相，包含至少一个 从具有特定胆固醇基的乙烯基单体和五甲基环五硅氧烷的反应获得的线性或环状液晶低聚物（A）中选择的液晶低聚物，其定义为当膜的厚度由d m m），扭曲向列相的螺旋间距由P（μm），d> / = 3×P，P <=0.3μm或P> / =0.8μm表示，其中，当重复 液晶低聚物（A）的一个分子中的单元（I）和（II）分别假定为n和n'，n和n'各自为1〜20的整数，并且满足4 < = n + n'= 21，n：n'= 20：1 至1:20，并且液晶低聚物（A）的重复单元（II）的末端基团聚合。 该光学各向异性膜能够提供具有较小的对比度或显示颜色的视角依赖性的液晶显示装置。