Title:
OPTICAL FILM SET, BACKLIGHT MODULE, AND DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/102802
Kind Code:
A1
Abstract:
An optical film set (200), configured to guide light out of a light guide plate (110) of a backlight module (100). The optical film set (200) comprises a lower prism sheet (220) and an upper prism sheet (230). The lower prism sheet (220) has a plurality of lower prism structures (221), and each lower prism structure (221) extends along a first direction (D1). The upper prism sheet (230) is disposed above the lower prism sheet (220), the upper prism sheet (230) has a plurality of upper prism structures (231), each upper prism structure (231) extends along a second direction (D2), and the second direction (D2) is different from the first direction (D1). An included angle in a range from 25 degrees to 50 degrees or from 130 degrees to 155 degrees is formed between the second direction (D2) and an extension direction (A1) of a light incident surface (111) of the light guide plate (110), and comprises endpoint values.
Inventors:
HUANG CHIEN-CHIH (CN)
HUANG PO-CHANG (CN)
CHANG CHIA-YIN (CN)
HUANG PO-CHANG (CN)
CHANG CHIA-YIN (CN)
Application Number:
PCT/CN2021/136657
Publication Date:
June 15, 2023
Filing Date:
December 09, 2021
Export Citation:
Assignee:
RADIANT GUANGZHOU OPTO ELECTRONICS CO LTD (CN)
International Classes:
G02F1/1335; G02B5/02; G02B5/04
Foreign References:
| CN213069419U | 2021-04-27 | |||
| CN111679352A | 2020-09-18 | |||
| CN108490692A | 2018-09-04 | |||
| TWI738465B | 2021-09-01 | |||
| CN212229385U | 2020-12-25 | |||
| CN103631052A | 2014-03-12 | |||
| US20090002592A1 | 2009-01-01 |
Attorney, Agent or Firm:
BEIJING EAST IP LTD. (CN)
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