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    • 1. 发明授权
    • Electrochromic display device
    • 电致变色显示装置
    • US4660939A
    • 1987-04-28
    • US647490
    • 1984-09-05
    • Sohji TsuchiyaWataru FujikawaToshikuni KojimaSadashi HiguchiAkio Yamashita
    • Sohji TsuchiyaWataru FujikawaToshikuni KojimaSadashi HiguchiAkio Yamashita
    • G02F1/155G02F1/01
    • G02F1/155
    • In an electrochromic display device including a pair of opposed substrates, a display electrode formed on one of the substrates and a counter electrode formed on the other substrate, the response speed and display life of the device are improved by its novel counter electrode structure including a low conductive film arranged to face the display electrode and a high conductive film arranged to uncover, adjoin or cover the former. Alternatively, the low conductive film is embedded in the high conductive film to face the display electrode. Each of the conductive films is essentially made of In.sub.2 O.sub.3, In.sub.2 O.sub.3 --SnO.sub.2 or SnO.sub.2. The high conductive film may be made of Au, Ag or Pt. Where the low conductive film is an insulating film, it is sandwiched by the high conductive films. The insulating film is made of a metal oxide, metal fluoride or metal nitride. The difference in electric resistance between the low and high conductive films is selected 10 times or more. This novel counter electrode structure reduces the leakage current and provides a uniform current density distribution thus ensuring an improved response speed and display life.
    • 在包括一对相对基板的电致变色显示装置中,形成在一个基板上的显示电极和形成在另一个基板上的对电极,通过其新颖的对电极结构改善了该装置的响应速度和显示寿命, 布置成面对显示电极的低导电膜和布置成露出,邻接或覆盖前者的高导电膜。 或者,低导电膜嵌入到高导电膜中以面对显示电极。 每个导电膜基本上由In2O3,In2O3-SnO2或SnO2制成。 高导电膜可以由Au,Ag或Pt制成。 低导电膜是绝缘膜时,被高导电膜夹在中间。 绝缘膜由金属氧化物,金属氟化物或金属氮化物制成。 低导电膜和高导电膜之间的电阻差为10倍以上。 这种新型的对电极结构减少了泄漏电流并且提供均匀的电流密度分布,从而确保了改进的响应速度和显示寿命。