发明名称 |
FERROELECTRIC LIQUID CRYSTAL CELL |
摘要 |
<p>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.</p> |
申请公布号 |
EP0160302(B1) |
申请公布日期 |
1993.07.21 |
申请号 |
EP19850105290 |
申请日期 |
1985.04.30 |
申请人 |
HITACHI, LTD. |
发明人 |
IWASAKI, KISHIRO;ERA, SUSUMU;YOKOKURA, HISAO;NAKATA, TADAO;MUKOH, AKIO |
分类号 |
C08G73/10;C09K19/02;G02F1/1337 |
主分类号 |
C08G73/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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