发明授权
- 专利标题： Polarizing plate protective film, polarizing plate, and liquid crystal display
- 专利标题（中）： 偏光板保护膜，偏光板和液晶显示屏
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申请号： US12296297申请日： 2007-04-02
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公开(公告)号： US07973883B2公开(公告)日： 2011-07-05
- 发明人: Shigeki Oka , Kunio Shimizu
- 申请人： Shigeki Oka , Kunio Shimizu
- 申请人地址： JP Tokyo
- 专利权人： Konica Minolta Opto, Inc.
- 当前专利权人： Konica Minolta Opto, Inc.
- 当前专利权人地址： JP Tokyo
- 代理机构： Lucas & Mercanti, LLP
- 优先权： JP2006-109477 20060412
- 国际申请： PCT/JP2007/057386 WO 20070402
- 国际公布： WO2007/119646 WO 20071025
- 主分类号： G02F1/1335
- IPC分类号： G02F1/1335 ; C09K19/00
摘要：
Disclosed is a polarizing plate protective film having high dimensional stability against moisture. Also disclosed are a polarizing plate using such a polarizing plate protective film, and a liquid crystal display. Specifically disclosed is a polarizing plate protective film which is characterized by containing a cellulose ester and a polymer X which is obtained by copolymerizing at least a styrene derivative monomer Xa having no hydroxyl group and an ethylenically unsaturated monomer Xb having a hydroxyl group or a carboxyl group, and has a weight average molecular weight of 500-100,000.