发明授权
- 专利标题： Cellulose ester film, polarizing plate and liquid crystal display
- 专利标题（中）： 纤维素酯膜，偏光板和液晶显示器
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申请号： US11445580申请日： 2006-06-02
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公开(公告)号： US07749578B2公开(公告)日： 2010-07-06
- 发明人: Shigeki Oka , Kunio Shimizu , Takashi Takebe
- 申请人： Shigeki Oka , Kunio Shimizu , Takashi Takebe
- 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： Frishauf, Holtz, Goodman & Chick, P.C.
- 优先权： JP2005-168004 20050608; JP2005-249041 20050830
- 主分类号： G02F1/13363
- IPC分类号： G02F1/13363
摘要：
An object of the present invention is to provide a polarizing plate protective film exhibiting a reduced variation value retardation, which is highly stable against polarizing plate degradation, polarizing plate dimension, and polarizing plate curl. Disclosed is a cellulose ester film possessing cellulose ester, polymer X having a weight average molecular weight of 2000-30000 prepared by copolymerizing ethylenic unsaturated monomer Xa containing no aromatic ring and hydrophilic group within a molecule and ethylenic unsaturated monomer Xb containing no aromatic ring but a hydrophilic group within a molecule, and polymer Y having a weight average molecular weight of 500-3000 prepared by polymerizing ethylenic unsaturated monomer Ya containing no aromatic ring.
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