发明名称 |
POLARIZING FILM, POLARIZING PLATE AND LIQUID CRYSTAL DISPLAY DEVICE |
摘要 |
A polarizing film which comprises a polyvinyl alcohol-based resin film and iodine being adsorbed thereon and oriented, and is prepared, for example, by subjecting the polyvinyl alcohol-based resin film to a dyeing treatment, to a stretching treatment, to a boric acid treatment and further to a complementary color treatment in which the film is immersed in a solution containing a chlorinated compound. The polarizing film is so adjusted as to have a boric acid content of 5 to 40 weight % by the dyeing treatment, stretching treatment and boric acid treatment, and also to have a chlorine ion content of 200 to 10,000 ppm by the complementary color treatment. The above polarizing film retains an achromatic hue when it is arranged at a parallel Nicol position, and also exhibits improved durability of its optical characteristics under a high temperature and high humidity condition, and a high temperature condition. |
申请公布号 |
EP1666932(A1) |
申请公布日期 |
2006.06.07 |
申请号 |
EP20040816205 |
申请日期 |
2004.09.15 |
申请人 |
NIPPON KAYAKU KABUSHIKI KAISHA;POLATECHNO CO., LTD |
发明人 |
OKADA, MASARU;YOSHIDA, TATSUYA;OSHIMA, SATOMI |
分类号 |
G02B5/30;G02F1/1335;(IPC1-7):G02B5/30;G02F1/133 |
主分类号 |
G02B5/30 |
代理机构 |
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代理人 |
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