Invention Grant
US08325418B2 Optical film, its manufacturing method, anti-glare polarizer using the same, and display apparatus
有权
光学膜,其制造方法,使用其的防眩偏振片和显示装置
- Patent Title: Optical film, its manufacturing method, anti-glare polarizer using the same, and display apparatus
- Patent Title (中): 光学膜,其制造方法,使用其的防眩偏振片和显示装置
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Application No.: US12520946Application Date: 2008-06-20
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Publication No.: US08325418B2Publication Date: 2012-12-04
- Inventor: Tsutomu Nagahama , Yumi Haga , Hitoshi Watanabe , Shinichi Matsumura
- Applicant: Tsutomu Nagahama , Yumi Haga , Hitoshi Watanabe , Shinichi Matsumura
- Applicant Address: JP Tokyo
- Assignee: Sony Corporation
- Current Assignee: Sony Corporation
- Current Assignee Address: JP Tokyo
- Agency: K&L Gates LLP
- Priority: JP2007-170563 20070628
- International Application: PCT/JP2008/061680 WO 20080620
- International Announcement: WO2009/001911 WO 20081231
- Main IPC: G02B5/30
- IPC: G02B5/30

Abstract:
An anti-glare film is provided and includes micro concave/convex portions on a surface. An average interval between the micro concave and convex portions is equal to 300 μm or less. A differentiation with respect to angle d{Log(I(α))}/dα of a logarithm intensity of reflection Log(I(α)) in a direction of a deviation angle α from a direction of specular reflection has an extreme value. A differentiation d{Log(P(β)}/dβ of a histogram P(β) to an inclination angle β of the micro concave/convex portions has an extreme value. In the anti-glare film 1, a value C(2.0) of transmitted image clarity measured by using an optical comb of a comb width of 2 mm in accordance with JIS-K7105 is equal to 30% or more, and a ratio C(0.125)/C(2.0) of the value C(2.0) measured by using the optical comb of the comb width of 2 mm and a value C(0.125) measured by using an optical comb having a comb width of 0.125 mm is equal to 0.1 or more.
Public/Granted literature
- US20090310219A1 OPTICAL FILM, ITS MANUFACTURING METHOD, ANTI-GLARE POLARIZER USING THE SAME, AND DISPLAY APPARATUS Public/Granted day:2009-12-17
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