Invention Grant
US07207706B2 Light emitting diode having diffraction grating and planar light source device using the same
有权
具有衍射光栅的发光二极管和使用其的平面光源装置
- Patent Title: Light emitting diode having diffraction grating and planar light source device using the same
- Patent Title (中): 具有衍射光栅的发光二极管和使用其的平面光源装置
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Application No.: US10946447Application Date: 2004-09-20
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Publication No.: US07207706B2Publication Date: 2007-04-24
- Inventor: Charles Leu , Wen-Jeng Huang , Jyh-Chain Lin
- Applicant: Charles Leu , Wen-Jeng Huang , Jyh-Chain Lin
- Applicant Address: TW Taipei Hsien
- Assignee: Hon Hai Precision Ind. Co., Ltd.
- Current Assignee: Hon Hai Precision Ind. Co., Ltd.
- Current Assignee Address: TW Taipei Hsien
- Agent Wei Te Chung
- Priority: TW92125989A 20030919
- Main IPC: F21V7/04
- IPC: F21V7/04 ; F21V29/00 ; H01L33/00 ; H01L21/00 ; H01J1/62
Abstract:
A planar light source device (100) for a display device includes a light guide plate (120) and pluralities of light emitting diodes (110). The light guide plate has a light incident surface (121). The light emitting diodes are located in the vicinity of the light incident surface. Each light emitting diode has a light emission surface opposite to the light incident surface of the light guide plate, and has a diffraction grating (117) provided on the light emission surface for improving a range of divergence of light beams emitted therefrom.
Public/Granted literature
- US20050063173A1 Light emitting diode having diffraction grating and planar light source device using the same Public/Granted day:2005-03-24
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