发明名称 |
Liquid crystal display device |
摘要 |
A liquid crystal display device wherein a nematic liquid crystal having a positive dielectric anisotropy and added with a chiral material is sealed between a pair of upper and lower substrates so as to constitute a helical structure twisted within a range between 140 DEG and 250 DEG along a direction of thickness thereof, and polarizing axes or absorption axes of a pair of polarizing plates disposed on the upper and lower substrates are angularly displaced by a predetermined angle or predetermined angles from major axes of liquid crystal molecules adjacent to the upper and lower substrates, respectively, and a ratio of thickness of the nematic liquid crystal to a natural molecular helical pitch of the nematic liquid crystal added with a chiral material falls within a range of from 0.14 to 0.60 inclusive.
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申请公布号 |
US4653865(A) |
申请公布日期 |
1987.03.31 |
申请号 |
US19860847166 |
申请日期 |
1986.04.02 |
申请人 |
HITACHI, LTD. |
发明人 |
KANDO, YASUHIKO;NAKAGOMI, TAMIHITO;HASEGAWA, SHINJI;HANADA, YOSHIO |
分类号 |
G02F1/133;G02F1/1335;G02F1/137;G02F1/139;G09F9/35;(IPC1-7):G02F1/13 |
主分类号 |
G02F1/133 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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