Title:
BACKLIGHT SOURCE STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2022/193834
Kind Code:
A1
Abstract:
A backlight source structure, comprising: a lighting assembly (1), a light guide plate (3), a dimming film (4), and a light reflecting sheet (2) located on one side of a light reflecting surface of the light guide plate (3). The light guide plate (3) has a light incident surface, a light exit surface, and the light reflecting surface; a contact angle between a tangent line of any point on the surface of a first surface microstructure (31) on the light reflecting surface and the light reflecting surface is not larger than 9°; an included angle between a tangent line of any point on the surface of a second surface microstructure (32) on the light incident surface and the light incident surface is 30-70°; an included angle between a tangent line of any point on the surface of a third surface microstructure (33) on the light exit surface and the light incident surface is not larger than 70°. The dimming film (4) located on one side of the light exit surface of the light guide plate (3) comprises a substrate layer (41) and a microstructure layer (42), and the microstructure layer (42) has triangular prism strips extending along the direction parallel to the light incident surface and arranged intermittently or continuously. Thus, large angle light and a light exit angle are reduced, and the utilization rate and brightness of a backlight source are improved.
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Inventors:
MA JUN (CN)
XUE JIUZHI (CN)
XUE JIUZHI (CN)
Application Number:
PCT/CN2022/073004
Publication Date:
September 22, 2022
Filing Date:
January 20, 2022
Export Citation:
Assignee:
SMART LIQUID CRYSTAL TECH CO LTD (CN)
International Classes:
G02B6/00; G02B5/02; G02F1/13357
Foreign References:
| CN212341509U | 2021-01-12 | |||
| CN107065060A | 2017-08-18 | |||
| CN112882148A | 2021-06-01 | |||
| CN202813042U | 2013-03-20 | |||
| JP2004069879A | 2004-03-04 | |||
| CN110082853A | 2019-08-02 | |||
| CN1996059A | 2007-07-11 |
Attorney, Agent or Firm:
SUZHOU WISPRO INTELLECTUAL PROPERTY AGENCY (CN)
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