Invention Grant
- Patent Title: Planar light-emitting device and display apparatus having the same
- Patent Title (中): 平面发光装置及其显示装置
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Application No.: US12167659Application Date: 2008-07-03
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Publication No.: US07705931B2Publication Date: 2010-04-27
- Inventor: Daisaku Okuwaki , Tatsuro Yamada , Kenta Miura
- Applicant: Daisaku Okuwaki , Tatsuro Yamada , Kenta Miura
- Applicant Address: JP Yamanashi-ken
- Assignee: Citizen Electronics Co., Ltd.
- Current Assignee: Citizen Electronics Co., Ltd.
- Current Assignee Address: JP Yamanashi-ken
- Agency: Brinks Hofer Gilson & Lione
- Priority: JP2007-179074 20070706; JP2008-111844 20080422
- Main IPC: G02F1/13337
- IPC: G02F1/13337 ; F21V7/04

Abstract:
A planar light-emitting device includes a lightguide plate (7), a light source including at least one light-emitting package (6) that makes light enter the lightguide plate, and a reflecting sheet (10, 11) that returns light leaking from the light source. The lightguide plate has an upper surface as a light exit surface, a lower surface opposite to the upper surface, and a peripheral edge surface a part of which is disposed as a light entrance surface (7′). The light source includes at least one light-emitting package (6) having a substrate, at least one light-emitting element mounted on a mount surface of the substrate, and a light-transmitting resin provided on the mount surface to seal the light-emitting element. The reflecting sheet is disposed to face at least one of the upper and lower surfaces of the lightguide plate and to extend beyond the light entrance surface as far as over or underneath the light-transmitting resin.
Public/Granted literature
- US20090009689A1 PLANAR LIGHT-EMITTING DEVICE AND DISPLAY APPARATUS HAVING THE SAME Public/Granted day:2009-01-08
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