Invention Grant
- Patent Title: Optical film, polarizing plate and liquid crystal display
- Patent Title (中): 光学膜，偏光板和液晶显示器
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Application No.: US11911993Application Date: 2006-04-20
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Publication No.: US07876502B2Publication Date: 2011-01-25
- Inventor: Yoji Ito , Yoshiaki Hisakado , Yuta Takahashi
- Applicant: Yoji Ito , Yoshiaki Hisakado , Yuta Takahashi
- Applicant Address: JP Minato-Ku, Tokyo
- Assignee: Fujifilm Corporation
- Current Assignee: Fujifilm Corporation
- Current Assignee Address: JP Minato-Ku, Tokyo
- Agency: Buchanan Ingersoll & Rooney PC
- Priority: JP2005-125356 20050422; JP2005-125357 20050422; JP2005-192312 20050630; JP2005-192313 20050630
- International Application: PCT/JP2006/308792 WO 20060420
- International Announcement: WO2006/115280 WO 20061102
- Main IPC: G02B5/30
- IPC: G02B5/30
Abstract:
An optical film is provided and includes a transparent polymer film. The optical film has at least an A1 value defined by Re (450)/Re (550) of from 0.10 to 0.95 and A2 value defined by Re (650)/Re (550) of from 1.01 to 1.50. Re (λ) represents the retardation value of the film with respect to light having a wavelength of λ nm; and Rth (λ) is the retardation value in the thickness direction of film with respect to light having a wavelength of λ nm.
Public/Granted literature
- US20090052032A1 OPTICAL FILM, POLARIZING PLATE AND LIQUID CRYSTAL DISPLAY Public/Granted day:2009-02-26
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