发明授权
- 专利标题： Ferroelectric liquid crystal cell with rubbed polyimide alignment layer
- 专利标题（中）： 铁电液晶电池与摩擦聚酰亚胺取向层
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申请号： US729420申请日： 1984-05-01
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公开(公告)号： US4634228A公开(公告)日： 1987-01-06
- 发明人: Kishiro Iwasaki , Susumu Era , Hisao Yokokura , Tadao Nakata , Akio Mukoh
- 申请人： Kishiro Iwasaki , Susumu Era , Hisao Yokokura , Tadao Nakata , Akio Mukoh
- 申请人地址： JPX Tokyo
- 专利权人： Hitachi, Ltd.
- 当前专利权人： Hitachi, Ltd.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX59-86235 19840501; JPX59-116455 19840608
- 主分类号： C08G73/10
- IPC分类号： C08G73/10 ; C09K19/02 ; G02F1/1337 ; G02F1/13
摘要：
Orientation control films are coated on a pair of transparent substrates on the side contiguous to the ferroelectric liquid crystal layer and rubbed for aligning molecules thereof. The films are made of a polyimide polymer prepared by ring closure by heating and dehydrating of a polyamic acid which is synthesized by condensing, for example, pyromellitic dianhydride with 4,4'-diaminoterphenyl. A contrast ratio of the ferroelectric liquid crystal element is improved while keeping a high response characteristic of the ferroelectric liquid crystal materials.
公开/授权文献
- US5825081A Tape carrier and assembly structure thereof 公开/授权日：1998-10-20
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