发明名称 |
Laminated retardation layer, its fabrication process, and liquid crystal display incorporating the same |
摘要 |
The invention relates to a liquid crystal display that incorporates a laminated retardation layer 10 comprising a combination of a negative C-plate having a specific chromatic dispersion and a positive A-plate having a specific chromatic dispersion, used to improve the viewing angle characteristics thereof, thereby presenting high-contrast images with high color reproducibility yet with neither interference variations nor color shifts. The laminated retardation layer 10 is obtained by lamination of a retardation layer 11 having positive index anisotropy and an optical axis in a layer plane and a retardation layer 12 having negative index anisotropy and an optical axis in a normal direction to a layer plane. A stretched polymer film having inverse chromatic dispersion that causes retardation defined by an optical path difference between extraordinary light and ordinary light to become small as wavelength becomes short is used as the retardation layer 11 having positive index anisotropy and an optical axis in a layer plane, and a coating layer having normal chromatic dispersion that causes retardation defined by an optical path difference between extraordinary light and ordinary light to become large as wavelength becomes short is used as the retardation layer 12 having negative index anisotropy and an optical axis in a normal direction to a layer plane.
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申请公布号 |
US7508474(B2) |
申请公布日期 |
2009.03.24 |
申请号 |
US20040816469 |
申请日期 |
2004.03.31 |
申请人 |
DAI NIPPON PRINTING CO., LTD. |
发明人 |
KASHIMA KEIJI |
分类号 |
G02F1/1335;G02B5/30;G02F1/13363 |
主分类号 |
G02F1/1335 |
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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