Invention Grant
- Patent Title: Viewing-angle control sheet
- Patent Title (中): 视角控制表
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Application No.: US10562516Application Date: 2005-04-26
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Publication No.: US07686463B2Publication Date: 2010-03-30
- Inventor: Masahiro Goto
- Applicant: Masahiro Goto
- Applicant Address: JP Tokyo-to
- Assignee: Dai Nippon Printing Co., Ltd.
- Current Assignee: Dai Nippon Printing Co., Ltd.
- Current Assignee Address: JP Tokyo-to
- Agency: Ladas & Parry LLP
- Priority: JP2004-154911 20040525
- International Application: PCT/JP2005/007911 WO 20050426
- International Announcement: WO2005/116698 WO 20051208
- Main IPC: G02B27/00
- IPC: G02B27/00 ; G03B21/56

Abstract:
A view angle control sheet which can suppress a decrease in screen brightness is provided. Lens portions having trapezoidal shapes in cross section are arranged at predetermined intervals, and a wedge-shaped portion between the lens portions adjacent to each other is filled with the same material as the lens portion or with a material different from the lens portion. In the wedge-shaped portion, a bottom surface is provided on a screen image side while a leading edge is provided on an observer side, and at least a slope portion of the wedge-shaped portion is made of a material having a refractive index lower than that of a lens portion material.
Public/Granted literature
- US20060245060A1 Viewing-angle control sheet Public/Granted day:2006-11-02
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