发明名称 |
Liquid crystal device having alignment film with particular surface energy difference before and after rubbing |
摘要 |
A liquid crystal device is constituted by a pair of substrates, and a liquid crystal disposed between the substrates. At least one of the substrates has thereon an alignment film. The alignment film is characterized in that (1) it has a surface energy of at most 35 dyne/cm before rubbing and has been rubbed to have a refractive index anisotropy of at least 0.02, or (2) it has been rubbed to have a surface energy difference DELTA E of at least 9 dyne/cm and a difference DELTA delta in dispersion term of the surface energy of at least 6 dyne/cm between before and after the rubbing. The alignment film is effective in providing a high contrast and decreasing a delay in optical response causing after-image.
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申请公布号 |
US5400159(A) |
申请公布日期 |
1995.03.21 |
申请号 |
US19940180459 |
申请日期 |
1994.01.12 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
TAKAO, HIDEAKI;ASAOKA, MASANOBU;KOJIMA, MAKOTO |
分类号 |
G02F1/1337;G02F1/141;(IPC1-7):G02F1/133;G02F1/133 |
主分类号 |
G02F1/1337 |
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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