Title:
BACKLIGHT DEVICE FOR DISPLAY
Document Type and Number:
WIPO Patent Application WO/2020/189858
Kind Code:
A1
Abstract:
The present invention relates to a backlight device for a display, the device comprising: a light source module including multiple light sources mounted on a substrate to emit light upwards; a first light guide unit made of a transparent material and coupled to the substrate while sealing the light sources, so as to extract and transmit lights from the light sources; multiple reflective patterns formed on the upper surface of the first light guide unit at positions corresponding to the positions of the light sources so as to reflect vertical components of lights from the light sources in an inclined direction; and a reflective sheet interposed between the substrate and the first light guide unit so as to reflect the lights having been reflected from the reflective patterns and thus emit the lights toward the upper surface of the light guide unit.
Inventors:
KIM KI JUNG (KR)
Application Number:
PCT/KR2019/009182
Publication Date:
September 24, 2020
Filing Date:
July 24, 2019
Export Citation:
Assignee:
HEESUNG ELECTRONICS CO LTD (KR)
International Classes:
F21V8/00; G02B5/08; G02F1/13357
Foreign References:
| KR20060031518A | 2006-04-12 | |||
| KR20030081975A | 2003-10-22 | |||
| US20160139326A1 | 2016-05-19 | |||
| KR101484466B1 | 2015-01-20 | |||
| US5816677A | 1998-10-06 |
Attorney, Agent or Firm:
SHINWOO PATENT & LAW FIRM (KR)
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