发明授权
US5206752A Optical rotator formed of a twisted nematic liquid crystal polyster
including an ortho-substituted aromatic unit
失效
光学旋转器形成一个包含正交取代的芳族单元的双向液晶液晶
- 专利标题： Optical rotator formed of a twisted nematic liquid crystal polyster including an ortho-substituted aromatic unit
- 专利标题（中）： 光学旋转器形成一个包含正交取代的芳族单元的双向液晶液晶
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申请号： US703179申请日： 1991-05-20
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公开(公告)号： US5206752A公开(公告)日： 1993-04-27
- 发明人: Hiroyuki Itoh , Takehiro Toyooka , Shigeki Iida
- 申请人： Hiroyuki Itoh , Takehiro Toyooka , Shigeki Iida
- 申请人地址： JPX Tokyo
- 专利权人： Nippon Oil Company, Limited
- 当前专利权人： Nippon Oil Company, Limited
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX2-126962 19900518
- 主分类号： G02B1/08
- IPC分类号： G02B1/08 ; G02B5/30 ; G02F1/13 ; G02F1/13363
摘要：
An optical rotator comprising a light transmitting base, an alignment film layer formed on said base, and a film layer formed of a liquid crystalline polymer. The film layer exhibits a twisted nematic orientation in the state of liquid crystal and assumes a glassy state at a temperature below a liquid crystal transition point of the polymer. The polymer is a polyester which includes an ortho-substituted aromatic unit.