发明授权
- 专利标题: Liquid crystal electro-optical device and manufacturing method for the same
- 专利标题(中): 液晶电光装置及其制造方法相同
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申请号: US950771申请日: 1992-09-24
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公开(公告)号: US5309263A公开(公告)日: 1994-05-03
- 发明人: Masahiko Sato
- 申请人: Masahiko Sato
- 申请人地址: JPX Atsugi
- 专利权人: Semiconductor Energy Laboratory Co., Ltd.
- 当前专利权人: Semiconductor Energy Laboratory Co., Ltd.
- 当前专利权人地址: JPX Atsugi
- 优先权: JPX1-305888 19891124
- 主分类号: G02F1/1337
- IPC分类号: G02F1/1337 ; G02F1/1333 ; G02F1/13
摘要:
A liquid crystal electro-optical device having gettering means therein and a method for manufacturing such a liquid crystal electro-optical device are disclosed. For example, in a liquid crystal panel disposed in the device, polyvinyl carbazole film is formed as the getting means on at least one of a pair of substrates, and the film has a function to absorb ionized impurities existing in liquid crystal disposed in the device. In virtue of the film, ionized impurities in the liquid crystal layer are decreased, and by heating the liquid crystal panel, the function of the polyvinyl carbazole film, i.e. the function to absorb ionized impurities, is enhanced. Consequently, a liquid crystal electro-optical device free from after-image which was a problem in conventional liquid crystal display devices can be obtained.
公开/授权文献
- US5945492A Graft polymers with controlled viscosity 公开/授权日:1999-08-31
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