发明授权
- 专利标题: Liquid crystal device for gradational display
- 专利标题(中): 液晶显示器
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申请号: US253160申请日: 1994-06-02
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公开(公告)号: US5583682A公开(公告)日: 1996-12-10
- 发明人: Hiroyuki Kitayama , Kenji Shinjo , Syuji Yamada
- 申请人: Hiroyuki Kitayama , Kenji Shinjo , Syuji Yamada
- 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: JPX5-154557 19930602
- 主分类号: G02F1/1337
- IPC分类号: G02F1/1337 ; C09K19/02 ; C09K19/34 ; G02F1/141
摘要:
A liquid crystal device for gradational display, comprising: a pair of substrates each provided with an electrode, and a liquid crystal layer comprising a chiral smectic liquid crystal disposed between the substrates; the pair of substrates each having thereon alignment control layer provided with a uniaxial alignment axis, wherein aid liquid crystal layer comprises a striped region and a non-striped region where (1) the striped region and the non-striped region each assume a homogeneous alignment state, (2) the striped region extends in a direction perpendicular to the direction of the uniaxial alignment axis, and (3) each of liquid crystal molecules within the striped region and the non-striped region show bistability; and the liquid crystal molecules within the striped region have a threshold voltage, for switching between two stable states, different from that given by the liquid crystal molecules within the on-striped region. The above two regions (striped and non-striped region) having different threshold voltages each other are suitable as a display region for a liquid crystal device providing good gradation characteristic.
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