发明名称 |
Quarter wave plate comprising two optically anisotropic layers |
摘要 |
A circularly polarizing plate comprises a linearly polarizing membrane and a quarter wave plate. The quarter wave plate comprises an optically anisotropic layer A and an optically anisotropic layer B. The quarter wave plate has such an optical characteristic that a retardation value essentially is a quarter of a wavelength when the retardation value is measured at the wavelength of 450 nm, 550 nm and 650 nm. One of the optically anisotropic layers A and B is a layer made from liquid crystal molecules, and the other is a polymer film or a layer made from liquid crystal molecules.
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申请公布号 |
US6593984(B2) |
申请公布日期 |
2003.07.15 |
申请号 |
US20020119149 |
申请日期 |
2002.04.10 |
申请人 |
FUJI PHOTO FILM CO., LTD. |
发明人 |
ARAKAWA KOHEI;KAWATA KEN;ICHIHASHI MITSUYOSHI |
分类号 |
G02B5/30;G02F1/13363;(IPC1-7):G02F1/35 |
主分类号 |
G02B5/30 |
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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