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    • 1. 发明授权
    • Optically anisotropic film
    • 光学各向异性薄膜
    • US5730899A
    • 1998-03-24
    • US533856
    • 1995-09-26
    • Toshihiro OhnishiKayoko UedaMasato Kuwabara
    • Toshihiro OhnishiKayoko UedaMasato Kuwabara
    • C09K19/38G02B5/30G02F1/13363C09K19/52G02F1/133
    • C09K19/3866G02B5/3016G02F1/13363
    • 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.
    • 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。
    • 6. 发明授权
    • Front panel board for plasma display
    • 等离子显示器前面板
    • US06417619B1
    • 2002-07-09
    • US09402716
    • 1999-10-08
    • Yukio YasunoriHakaru MiyakitaKayoko UedaHaruyoshi Sannou
    • Yukio YasunoriHakaru MiyakitaKayoko UedaHaruyoshi Sannou
    • H01J1749
    • H05K9/0096H01J11/12H01J11/44H01J2211/446
    • A front panel for a plasma display panel having at least one transparent resin plate and a conductive mesh placed on the transparent resin plate, in which a part of the conductive mesh is exposed on the plate in a sheet form on at least one side of the marginal surface of the front panel. The front panel may have uneven patterns on at least one side of the surfaces of the front panel, and may also include an intermediate synthetic resin plate between the conductive mesh and the transparent resin plate, as well as a decorative portion between the intermediate synthetic resin plate and the transparent resin plate. In addition, the front panel may contain a conductive film, which is in contact with the conductive mesh in a sheet form on at least one side of the marginal surface of the front panel.
    • 一种用于等离子体显示面板的前面板,其具有至少一个透明树脂板和放置在透明树脂板上的导电网,导电网的一部分以片状形式露出在该透明树脂板的至少一侧上 前面板的边缘表面。 前面板可以在前面板的表面的至少一侧上具有不均匀的图案,并且还可以包括在导电网和透明树脂板之间的中间合成树脂板以及中间合成树脂之间的装饰部分 板和透明树脂板。 此外,前面板可以包含导电膜,该导电膜在前面板的边缘表面的至少一侧与片状的导电网接触。