发明授权
- 专利标题: Chiral smectic liquid crystal device and display apparatus
- 专利标题(中): 手性近晶体液晶装置及显示装置
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申请号: US252535申请日: 1994-06-01
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公开(公告)号: US5453861A公开(公告)日: 1995-09-26
- 发明人: Kenji Shinjo , Hiroyuki Kitayama , Masanobu Asaoka , Masahiro Terada , Syuji Yamada , Hiroshi Mizuno
- 申请人: Kenji Shinjo , Hiroyuki Kitayama , Masanobu Asaoka , Masahiro Terada , Syuji Yamada , Hiroshi Mizuno
- 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: JPX3-310130 19911030; JPX4-105272 19920401
- 主分类号: G02F1/1337
- IPC分类号: G02F1/1337 ; G02F1/141 ; G02F1/13 ; G02F1/1343
摘要:
A liquid crystal device showing improved uniform alignment characteristic and switching characteristic is constituted by a pair of an upper substrate and a lower substrate, and a chiral smectic liquid crystal disposed between the upper and lower substrates. Each of the upper and lower substrates has thereon an electrode for applying a voltage to the liquid crystal and a uniaxial alignment film. The alignment films on the upper and lower substrates are provided with uniaxial alignment axes which cross each other so that the direction of crossing of the uniaxial alignment axes from the lower substrate to the upper substrate is identical to the direction of helical twist in cholesteric phase of the chiral smectic liquid crystal, and the chiral smectic liquid crystal is disposed in such an alignment state that the liquid crystal shows a pretilt angle .alpha., a cone angle H, an inclination angle .delta. of SmC.sup.* layer, and an apparent tilt angle .theta.a satisfying relationships of: H .theta.a>H/2. The crossing direction may preferably have a polarity (taken as "positive" in clockwise direction and "negative" in anticlockwise direction) which is the same as the polarity of the spontaneous polarization of the liquid crystal.
公开/授权文献
- US4360531A Substituted cycloalkanes 公开/授权日:1982-11-23
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