发明授权
- 专利标题: Optical cellulose acylate film, polarizing plate and liquid crystal display
- 专利标题(中): 光学纤维素酰化膜,偏光板和液晶显示
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申请号: US11630959申请日: 2005-06-27
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公开(公告)号: US07927672B2公开(公告)日: 2011-04-19
- 发明人: Sumio Ohtani , Hiroyuki Kawanishi , Seimi Satake
- 申请人: Sumio Ohtani , Hiroyuki Kawanishi , Seimi Satake
- 申请人地址: JP Minato-Ku, Tokyo
- 专利权人: Fujifilm Corporation
- 当前专利权人: Fujifilm Corporation
- 当前专利权人地址: JP Minato-Ku, Tokyo
- 代理机构: Buchanan Ingersoll & Rooney PC
- 优先权: JP2004-191075 20040629
- 国际申请: PCT/JP2005/012260 WO 20050627
- 国际公布: WO2006/001527 WO 20060105
- 主分类号: G02F1/13363
- IPC分类号: G02F1/13363 ; G02F1/335
摘要:
A cellulose acylate film is provided and is excellent in increasability of an in-plane retardation and a retardation in a thickness direction, from which an additive does not bleed out, and which is excellent in surface properties. The cellulose acylate film has a thickness of 40 μm to 180 μm and contains no retardation increasing agent. Retardation values Re and Rth of the cellulose acylate film meet the following formulae (III) to (V): 46≦Re≦100 (III) Rth=a−5.9Re (IV) 520≦a≦670 (V) A polarizing plate and a VA mode liquid crystal display having wide viewing angle characteristics and small changes in color, which are using the cellulose acylate film, are provided.
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