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    • 7. 发明申请
    • MACROMOLECULAR DISPERSION TYPE LIQUID CRYSTAL DISPLAY ELEMENT AND METHOD OF MANUFACTURING THE SAME
    • 大分子分散型液晶显示元件及其制造方法
    • WO1998011467A1
    • 1998-03-19
    • PCT/JP1997003266
    • 1997-09-16
    • MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.KUBOTA, HirofumiKOSAKO, ShinyaNAKAO, KenjiNAITO, NorikoUEMURA, TsuyoshiYAMAMOTO, Masao
    • MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    • G02F01/133
    • C09K19/544C09K2019/546G02F1/1334Y10T428/10Y10T428/2984
    • A liquid crystal element wherein liquid crystal droplets are dispersed and retained in a macromolecular compound between a pair of substrates having electrodes on the respective inner surfaces. The liquid crystal droplets have substantially the same shape and size and the variation in the particle size is small, whereby it becomes possible to stably retain the alignment mode of the liquid crystal droplets in a bipolar type in a wide temperature range, and minimize the hysteresis of the transmittance of light with respect to a voltage applied across the electrodes. The same effect can also be obtained by reducing a tilt angle of the liquid crystal molecules in the vicinity of an interface between the liquid crystals and the macromolecular compound or increasing the anchoring strength, as a result of adding an interface regulating force controlling agent to a mutual solution of the liquid crystal and a macromolecule precursor, and raising the temperature at which the polymerization of the macromolecule and the phase separation of the macromolecule and the liquid crystal from each other occur by the ultraviolet radiation. The same effect can also be obtained by reducing the hysteresis of electrostatic capacity to a low level, or setting the electrostatic capacity ratio over 60 % at a voltage which gives a transmittance of not less than 10 % in voltage-transmittance characteristics. The electric field response can be improved in a wide range of temperatures in use, by reducing the surface tension of a liquid crystalline material to a level lower than that of the critical surface tension of an insulating film or the surface tension of the macromolecular compound. Accordingly, a display such as a TV set and a personal computer which are capable of displaying animations in a wide range of temperatures in use can be obtained.
    • 一种其中液晶微滴分散并保留在大分子化合物之间的液晶元件,所述大分子化合物在各自的内表面上具有电极的一对基板之间。 液晶小滴具有基本相同的形状和尺寸,并且粒径的变化小,从而可以在宽的温度范围内将液晶微滴的取向模式稳定地保持为双极型,并且使滞后最小化 相对于施加在电极上的电压的光的透射率。 通过在液晶和高分子化合物之间的界面附近降低液晶分子的倾斜角度或增加锚固强度,也可以获得相同的效果,这是通过向界面添加界面调节力控制剂 液晶和高分子前体的相互溶解,提高高分子聚合的温度和高分子与液晶的相分离通过紫外线照射发生。 通过将静电电容的滞后降低到低电平,或者在电压透过率特性的透射率为10%以上的电压下,将静电容量比设定为60%以上,也可以获得同样的效果。 通过将液晶材料的表面张力降低到比绝缘膜的临界表面张力低的程度或大分子化合物的表面张力,可以在宽范围的使用温度范围内改善电场响应。 因此,可以获得能够在宽范围的使用温度下显示动画的诸如电视机和个人计算机的显示器。