发明名称 |
PHASE RETARDER AND LIQUID CRYSTAL DISPLAY USING THE SAME |
摘要 |
A phase retarder obtained by uniaxially stretching a thermoplastic resin film, whose retardation value ranges from 30 to 1200 nm and whose color difference .DELTA.E* is not more than 30 as defined with the phase retarder being set between crossed polarizers in such a manner that the optical axis thereof makes an angle of 45.degree. with respect to the planes of polarization of the polarizers, and a liquid crystal display using the phase retarder are disclosed. The phase retarder has a fixed optical axis, a retardation value suited for new optical uses including liquid crystal displays, and freedom from optical color unevenness. The liquid crystal display using the phase retarder exhibits markedly improved image quality. |
申请公布号 |
CA1312759(C) |
申请公布日期 |
1993.01.19 |
申请号 |
CA19880570770 |
申请日期 |
1988.06.29 |
申请人 |
SUMITOMO CHEMICAL COMPANY, LIMITED |
发明人 |
NAKAMURA, KIMISHIGE;OKADA, TOYOKAZU;SAKAKURA, KAZUAKI;HIGASHI, KOJI;KIKUI, HITOSHI;ICHINOSE, KEIZO |
分类号 |
G02B5/30;G02B27/28;G02F1/133 |
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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