发明授权
US5311343A Liquid crystal device with at least two liquid crystal compounds, one
having and one not having a chiral smectic phase
失效
具有至少两个液晶化合物的液晶装置，一个具有和不具有手性近晶相的液晶装置
- 专利标题： Liquid crystal device with at least two liquid crystal compounds, one having and one not having a chiral smectic phase
- 专利标题（中）： 具有至少两个液晶化合物的液晶装置，一个具有和不具有手性近晶相的液晶装置
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申请号： US34827申请日： 1993-03-18
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公开(公告)号： US5311343A公开(公告)日： 1994-05-10
- 发明人: Kazuharu Katagiri , Kazuo Yoshinaga , Shinjiro Okada , Junichiro Kanbe
- 申请人： Kazuharu Katagiri , Kazuo Yoshinaga , Shinjiro Okada , Junichiro Kanbe
- 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： JPX59-146211 19840713; JPX59-146498 19840714; JPX59-190789 19840912; JPX59-190790 19840912; JPX59-192920 19840914
- 主分类号： C09K19/02
- IPC分类号： C09K19/02 ; C09K19/20 ; C09K19/50 ; G02F1/1337 ; G02F1/1341 ; G02F1/141 ; G02F1/137 ; C09K19/52 ; G02F1/13
摘要：
A liquid crystal device is constituted by (a) a pair of base plates each having an orientation control film thereon, and (b) a liquid crystal composition interposed between the base plates. The liquid crystal composition comprises a mixture including at least one liquid crystal compound which has a temperature range in which it shows chiral smectic phase and at least one optically active substance which does not have a temperature range in which it shows chiral smectic phase. The liquid crystal composition has a temperature range in which it shows cholesteric phase and is placed in chiral smectic phase which has been formed through cholesteric phase on temperature decrease. The liquid crystal composition comprises liquid crystal molecules having long axes forming a pre-tilt in the chiral smectic phase.
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