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    • 36. 发明授权
    • Color liquid crystal display device using polymer and polarization films
    • 彩色液晶显示装置采用聚合物和偏振膜
    • US6055033A
    • 2000-04-25
    • US304248
    • 1999-05-03
    • Hisanori YamaguchiHiroaki MizunoShingo FujitaTetsu Ogawa
    • Hisanori YamaguchiHiroaki MizunoShingo FujitaTetsu Ogawa
    • G02F1/133G02F1/1335G02F1/13363G02F1/139
    • G02F1/13363G02F1/1397G02F2203/34G02F2413/02G02F2413/07G02F2413/08
    • A color liquid crystal display device comprises a liquid crystal cell and a polymer film. The liquid crystal cell comprises a liquid crystal layer positioned between a pair of transparent substrates, on whose innersides transparent electrodes are provided. The polymer film is positioned at one side of the liquid crystal cell. The liquid crystal layer and the polymer film are sandwiched by a pair of polarization films. A twist angle of the liquid crystal layer is set to be a predetermined value. The product of birefringence of the nematic liquid crystal, .DELTA.n.sub.LC, and a thickness of liquid crystal layer, d.sub.LC, .DELTA.n.sub.LC .multidot.d.sub.LC is set to be a predetermined value. The birefringence difference .DELTA.(R)=R.sub.Film -.DELTA.n.sub.LC .multidot.d.sub.LC, which is defined by using the .DELTA.n.sub.LC .multidot.d.sub.LC and retardation of the polymer film, R.sub.Film, is set to be a value between 0.0 .mu.m and 0.1 .mu.m. The present color liquid crystal device can express a black and white display in achromatic color having bright white and with high contrast, and a red display with high color purity.
    • 彩色液晶显示装置包括液晶单元和聚合物膜。 液晶单元包括位于一对透明基板之间的液晶层,其上设置有透明电极。 聚合物膜位于液晶单元的一侧。 液晶层和聚合物膜被一对偏光膜夹在中间。 将液晶层的扭转角设定为规定值。 向列型液晶的双折射产物,DELTA nLC和液晶层dLC,DELTA nLCxdLC的厚度被设定为预定值。 通过使用DELTA nLCxdLC和聚合物膜的延迟RFilm定义的双折射差DELTA(R)= RFilm-DELTA nLCxdLC被设置为在0.0μm和0.1μm之间的值。 本发明的彩色液晶显示装置可以表现出具有明亮的白色和高对比度的无彩色的黑白显示,以及高纯度的红色显示。