Title:
COMPOSITE DIFFUSION PLATE AND ULTRA-THIN DIRECT-LIT BACKLIGHT MODULE
Document Type and Number:
WIPO Patent Application WO/2019/127754
Kind Code:
A1
Abstract:
A composite diffusion plate (10), comprising a light emitting layer (1) used for emitting light, a middle layer (2) used for guiding light, and a light incident layer (3) used for light to come in, which are sequentially stacked from top to bottom. At least one surface of the middle layer (2) is provided with a curved protrusion (2a) of an array. The index of refraction gradually increases from the light emitting layer (1) to the middle layer (2) to the light incident layer (3). Further disclosed is an ultra-thin direct-lit backlight module. The present invention further enhances the effect of angular divergence such that a direct-lit television may have an increased light emitting area while a light mixing distance value is small, thus alleviating the problem of LED mura, and achieving an ultra-thin direct-lit television.
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Inventors:
FU LINLIN (CN)
HE XIAOYU (CN)
HE XIAOYU (CN)
Application Number:
PCT/CN2018/073477
Publication Date:
July 04, 2019
Filing Date:
January 19, 2018
Export Citation:
Assignee:
HUIZHOU CHINA STAR OPTOELECTRONICS TECH CO LTD (CN)
International Classes:
F21S2/00; F21V5/00; F21V13/04; F21Y115/10
Foreign References:
| CN102798908A | 2012-11-28 | |||
| CN101554817A | 2009-10-14 | |||
| CN201228916Y | 2009-04-29 | |||
| CN101261329A | 2008-09-10 | |||
| CN1847949A | 2006-10-18 |
Attorney, Agent or Firm:
MING & YUE INTELLECTUAL PROPERTY LAW FIRM (CN)
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