发明授权
- 专利标题: Super-twisted nematic type liquid crystal display device
- 专利标题(中): 超扭曲向列型液晶显示装置
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申请号: US669576申请日: 1991-03-14
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公开(公告)号: US5184237A公开(公告)日: 1993-02-02
- 发明人: Haruo Iimura , Yasuyuki Takiguchi , Akihiko Kanemoto
- 申请人: Haruo Iimura , Yasuyuki Takiguchi , Akihiko Kanemoto
- 申请人地址: JPX Tokyo
- 专利权人: Ricoh Company, Ltd.
- 当前专利权人: Ricoh Company, Ltd.
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX2-77393 19900327; JPX2-77394 19900327
- 主分类号: G02F1/13363
- IPC分类号: G02F1/13363 ; G02F1/1347 ; G02F1/139
摘要:
A liquid crystal cell display device including a liquid crystal cell comprising a pair of substrates having transparent electrodes and aligning films, a liquid crystal composition with a positive dielectric anisotropy positioned between the substrates, major axes of the liquid crystal molecules being aligned nearly parallel in a plane parallel to the substrate when a field is applied and the liquid crystal molecules being twisted in an angle of 120.degree. to 360.degree. in a direction perpendicular to the substrate; a pair of polarizers positioned on opposite sides of the cell; and one or more birefringent layers positioned between the cell and at least one of the polarizers in which a maximum refractive index directions at a planes contacting the polarizer and the liquid crystal cell, are tilted with respect to a plane parallel to the substrate, angles made between each of the directions and the parallel plane are symmetrical one another with regard to a plane parallel to the substrate when angles made between the substrate and maximum refractive index directions positioned between the contacting planes of the birefringent layers are continuously distributed.
公开/授权文献
- US5721852A Method and apparatus for displaying a split bar window 公开/授权日:1998-02-24
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