发明授权
US5268780A Liquid crystal device having a polyimide alignment film substituted with fluorine or a fluorine-containing group 失效
具有由氟或含氟基团取代的聚酰亚胺取向膜的液晶装置

  • 专利标题: Liquid crystal device having a polyimide alignment film substituted with fluorine or a fluorine-containing group
  • 专利标题(中): 具有由氟或含氟基团取代的聚酰亚胺取向膜的液晶装置
  • 申请号: US899161
    申请日: 1992-06-15
  • 公开(公告)号: US5268780A
    公开(公告)日: 1993-12-07
  • 发明人: Yukio HanyuMasanobu Asaoka
  • 申请人: Yukio HanyuMasanobu Asaoka
  • 申请人地址: JPX Tokyo
  • 专利权人: Canon Kabushiki Kaisha
  • 当前专利权人: Canon Kabushiki Kaisha
  • 当前专利权人地址: JPX Tokyo
  • 优先权: JPX1-119605 19890511; JPX1-119606 19890511; JPX1-119607 19890511; JPX1-119608 19890511; JPX1-119609 19890511; JPX1-119610 19890511; JPX1-119611 19890511; JPX1-119612 19890511; JPX2-100769 19900417
  • 主分类号: C08G73/10
  • IPC分类号: C08G73/10 G02F1/1337 G02F1/13
Liquid crystal device having a polyimide alignment film substituted with
fluorine or a fluorine-containing group
摘要:
A liquid crystal device is formed by applying an alignment film comprising a fluorine-containing polyimide having a substituent of a fluorine atom or a fluorine containing group in its moiety originated from the carboxylic acid anhydride on at least one of a pair of substrates sandwiching a chiral smectic liquid crystal. Preferably, the respective substrates are provided with such fluorine-containing polyimide alignment films which have been rubbed in directions which are substantially parallel with each other and identical to each other or which intersect each other at a small counter-clockwise intersection angle. The liquid crystal device thus formed shows a high contrast display, particularly by multiplexing drive, free from after-image because of quick responsiveness.
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