Invention Grant
US08371720B2 Diffusion sheet, diffusion unit, illuminating unit, and display device
有权
扩散片，扩散单元，照明单元和显示装置
- Patent Title: Diffusion sheet, diffusion unit, illuminating unit, and display device
- Patent Title (中): 扩散片，扩散单元，照明单元和显示装置
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Application No.: US12739961Application Date: 2008-07-23
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Publication No.: US08371720B2Publication Date: 2013-02-12
- Inventor: Takahiro Yoshikawa
- Applicant: Takahiro Yoshikawa
- Applicant Address: JP Osaka
- Assignee: Sharp Kabushiki Kaisha
- Current Assignee: Sharp Kabushiki Kaisha
- Current Assignee Address: JP Osaka
- Agency: Keating & Bennett, LLP
- Priority: JP2007-285774 20071102
- International Application: PCT/JP2008/063154 WO 20080723
- International Announcement: WO2009/057362 WO 20090507
- Main IPC: G09F13/04
- IPC: G09F13/04 ; G02F1/13357
Abstract:
In a diffusion sheet (46), first reflection areas (AR1) with high reflectance and second reflection areas (AR2) with low reflectance are alternately arranged parallel to each other on a light receiving surface (46R), and third reflection areas (AR3) with high reflectance and fourth reflection areas (AR4) with low reflectance are alternately arranged parallel to each other on an light emitting surface (46F). In the diffusion sheet (46), the first reflection areas (AR1) and the fourth reflection areas (AR4) are opposed to each other, and the second reflection areas (AR2) and the third reflection areas (AR3) are opposed to each other.
Public/Granted literature
- US20100246190A1 DIFFUSION SHEET, DIFFUSION UNIT, ILLUMINATING UNIT, AND DISPLAY DEVICE Public/Granted day:2010-09-30
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