发明名称 |
POLARIZING PLATE, METHOD FOR PRODUCING POLARIZING PLATE, AND LIQUID CRYSTAL DISPLAY DEVICE |
摘要 |
<p>Disclosed are: a polarizing plate having visibility and viewing angle characteristics; and a liquid crystal display device using the polarizing plate. Specifically disclosed is a polarizing plate which is obtained by sandwiching a polarizer between first and second cellulose ester films. The polarizing plate is characterized in that the first cellulose ester film is formed from a cellulose ester having a total degree of substitution of acyl groups of 2.8-3.0, and the second cellulose ester film is formed from a cellulose ester having a total degree of substitution of acyl groups of 2.0-2.6, and has a retardation value Ro of 30-200 nm and a retardation value Rt of 70-300 nm. The polarizing plate is also characterized in that the first and second cellulose ester films are subjected to a saponification treatment wherein when the saponification condition is expressed as a saponification index M, the saponification index M1 of the first cellulose ester film and the saponification index M2 of the second cellulose ester film satisfy the relation of M1 > M2.</p> |
申请公布号 |
WO2010125997(A1) |
申请公布日期 |
2010.11.04 |
申请号 |
WO2010JP57348 |
申请日期 |
2010.04.26 |
申请人 |
KONICA MINOLTA OPTO, INC.;TAKAGI TAKAHIRO |
发明人 |
TAKAGI TAKAHIRO |
分类号 |
G02B5/30;G02F1/1335;G02F1/13363 |
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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