发明授权
- 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
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申请号: US899161申请日: 1992-06-15
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公开(公告)号: US5268780A公开(公告)日: 1993-12-07
- 发明人: Yukio Hanyu , Masanobu Asaoka
- 申请人: Yukio Hanyu , Masanobu 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
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.
公开/授权文献
- US5979380A Valve timing control device 公开/授权日:1999-11-09
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