发明授权
- 专利标题： Optical film, method for manufacturing the same, and phase difference film and polarizing plate using the same
- 专利标题（中）： 光学膜，其制造方法以及使用该膜的相位差膜和偏振片
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申请号： US10499963申请日： 2003-01-22
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公开(公告)号： US07270855B2公开(公告)日： 2007-09-18
- 发明人: Takashi Yamaoka , Shuuji Yano , Junichi Adachi , Masayuki Kawai , Kanako Wasai , Nao Murakami
- 申请人： Takashi Yamaoka , Shuuji Yano , Junichi Adachi , Masayuki Kawai , Kanako Wasai , Nao Murakami
- 申请人地址： JP Ibaraki-shi, Osaka
- 专利权人： Nitto Denko Corporation
- 当前专利权人： Nitto Denko Corporation
- 当前专利权人地址： JP Ibaraki-shi, Osaka
- 代理机构： Westerman, Hattori, Daniels & Adrian LLP
- 优先权： JP2002-014528 20020123
- 国际申请： PCT/JP03/00507 WO 20030122
- 国际公布： WO03/062873 WO 20030731
- 主分类号： G02B5/30
- IPC分类号： G02B5/30 ; C09K19/42 ; C09K19/36 ; G02F1/13363
摘要：
A method for preparing an optical film, which comprises applying and developing an application liquid mixture containing a liquid crystal monomer, a chiral agent and a polymerization initiator on an orientation substrate, subjecting the resultant developed layer to a heat treatment, to orient the monomer to a cholesteric structure, and then subjecting the developed layer to a poltmerization treatment, to polymerize the oriented liquid crystal monomer, thereby forming an optical film exhibiting a selective reflection wave length of 100 to 320 nm. An optical film prepared by the above method is reduced in the coloring due to selective reflection.