Invention Grant
- Patent Title: Light-scattering film, polarizing plate and image display
- Patent Title (中): 光散射膜,偏光板和图像显示
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Application No.: US11727581Application Date: 2007-03-27
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Publication No.: US07813038B2Publication Date: 2010-10-12
- Inventor: Katsumi Inoue , Jun Watanabe , Tetsuya Asakura , Daiki Wakizaka , Hideyasu Ishibashi , Isao Ikuhara
- Applicant: Katsumi Inoue , Jun Watanabe , Tetsuya Asakura , Daiki Wakizaka , Hideyasu Ishibashi , Isao Ikuhara
- 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: JP2006-089032 20060328
- Main IPC: G02B5/30
- IPC: G02B5/30

Abstract:
A light-scattering film is provided and includes a transparent support having thereon at least a light-scattering layer. When substantially parallel light is incident on a surface of the film at an incident angle of 5°, the reflectance for an angle θ in the light-receiving part measured in a plane containing the film normal line and the incident direction is R(θ), the value obtained by normalizing R(θ) by the reflectance of regular reflection is Rrel(θ), and the value calculated from the maximum variation |dRrel(θ)/dθ|max for the angle θ is a scattering coefficient A (formula 1), the reflection coefficient B (formula 2) calculated from the scattering coefficient A and the 5° specular reflectance Rs is from 2.0 to 5.0. Scattering coefficient A=1/(10×|dRrel(θ)/dθ|max) (Formula 1) Reflection coefficient B=2.2×log 10(Rs)−7.5×log 10(A)+5.9 (Formula 2)
Public/Granted literature
- US20070229804A1 Light-scattering film, polarizing plate and image display Public/Granted day:2007-10-04
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