Title:
BACKLIGHT DEVICE FOR DISPLAY
Document Type and Number:
WIPO Patent Application WO/2020/189857
Kind Code:
A1
Abstract:
The present invention relates to a backlight device for a display apparatus and is characterized by comprising: a light source module in which a plurality of light sources are mounted on a substrate and emit light upward; a transparent light guide part which is coupled to the substrate and covers the light sources, and which transmits the light from the light sources; first three-dimensional patterns which fill or coat engraved cavities in the top surface of the light guide part at positions corresponding to the positions of the light sources, and obliquely reflect the vertical components of the light from the light sources; and reflection sheets which are interposed between the substrate and the light guide part, and reflect the light reflected from the first three-dimensional patterns, thereby emitting the light to the top surface of the light guide part.
Inventors:
KIM KI JUNG (KR)
Application Number:
PCT/KR2019/009180
Publication Date:
September 24, 2020
Filing Date:
July 24, 2019
Export Citation:
Assignee:
HEESUNG ELECTRONICS CO LTD (KR)
International Classes:
F21V8/00; G02F1/1335
Foreign References:
| KR20060031518A | 2006-04-12 | |||
| KR20030081975A | 2003-10-22 | |||
| KR20020071358A | 2002-09-12 | |||
| KR101484466B1 | 2015-01-20 | |||
| US5816677A | 1998-10-06 |
Attorney, Agent or Firm:
SHINWOO PATENT & LAW FIRM (KR)
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