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    • 3. 发明授权
    • Liquid crystal display device with compensating film(s)
    • 带补偿膜的液晶显示装置
    • US6034754A
    • 2000-03-07
    • US85962
    • 1998-05-27
    • Yasushi SatoTakehiro ToyookaHitoshi Mazaki
    • Yasushi SatoTakehiro ToyookaHitoshi Mazaki
    • G02B5/30G02F1/1335G02F1/13363G02F1/1337
    • G02F1/13363G02F2413/02G02F2413/08G02F2413/105
    • Provided is a liquid crystal display device of a TN type which is improved on a display contrast, gray scale characteristics and viewing angle characteristics of a display color. A liquid crystal cell of a TN type for drive is sandwiched by a pair of upper and lower polarizing plates and at least one compensating film which has an extinction axis angle of 5 to 90 degrees as an absolute value and an optical rotating angle of 0.5 to 10 degrees as an absolute value, wherein signs of the extinction axis angle and the optical rotating angle are contrary to each other, is inserted between the liquid crystal cell and the upper polarizing plate, or between the liquid crystal cell and the lower polarizing plate, or at least two compensating films are respectively inserted between the liquid crystal cell and the upper polarizing plate, and between the liquid crystal cell and the lower polarizing plate, wherein a quasi fast axis vector of a compensating film and an easy axis vector of an electrode substrate nearer the compensating film of the liquid crystal cell satisfy an angular relation therebetween in the range of -30 to +30 degrees or +150 to +210 degrees.
    • 本发明提供一种改进了显示对比度,灰度特性和显示颜色的视角特性的TN型液晶显示装置。 用于驱动的​​TN型液晶单元由一对上下偏振片和至少一个具有消光轴角度为5至90度的补偿膜作为绝对值并且光学旋转角度为0.5至 10度为绝对值,其中消光轴角度和光学旋转角度的符号彼此相反插入在液晶单元和上偏振片之间,或液晶单元和下偏振片之间, 或者至少两个补偿膜分别插入在液晶单元和上偏振板之间以及液晶单元和下偏振板之间,其中补偿膜的准快轴矢量和电极的易轴矢量 靠近液晶单元的补偿膜的衬底在-30至+30度或+150至+210度的范围内满足其间的角度关系。
    • 6. 发明授权
    • Method for producing viewing angle compensator for liquid crystal display
    • 液晶显示器视角补偿器的制造方法
    • US5491001A
    • 1996-02-13
    • US208445
    • 1994-03-09
    • Hitoshi MazakiTakehiro ToyookaHiroyuki Itoh
    • Hitoshi MazakiTakehiro ToyookaHiroyuki Itoh
    • C09K19/38C09K19/40C09K19/58G02F1/13363B05D5/06
    • C09K19/586C09K19/3809C09K19/408C09K19/588G02F1/133636
    • The present invention relates to a method for producing a viewing angle compensator for liquid crystal displays which diminishes the view angle dependency of the liquid crystal display. More specifically, the method of making the view angle compensator involves applying a coating of an optically active polyester containing as a constituent a hydrocarbon unit selected from the group consisting of bulky aromatic units, polycyclic hydrocarbon units and ortho-substituted aromatic units, or a composition containing a liquid crystalline polyester which contains the said hydrocarbon unit as a constituent and also contains an optically active compound to a light transmitting substrate. The foregoing coating is heat-treated at a temperature higher than the glass transition point of the polyester to form a cholesteric orientation. The heat-treated coating is thereafter cooled to a temperature lower than the glass transition temperature to solidify a cholesteric structure.
    • 本发明涉及一种用于制造液晶显示器的视角补偿器的方法,其减少了液晶显示器的视角依赖性。 更具体地说,制造视角补偿器的方法包括:将含有选自大体积芳族单元,多环烃单元和邻位取代的芳族单元的烃单元作为组分的光学活性聚酯的涂层,或组合物 含有含有所述烃单元作为成分的液晶聚酯,并且还含有光学活性化合物至透光性基材。 将上述涂层在比聚酯的玻璃化转变温度高的温度下热处理以形成胆甾醇取向。 然后将经热处理的涂层冷却至低于玻璃化转变温度的温度以固化胆甾型结构。