Title:
OPTICAL CONVERSION STRUCTURE, BACKLIGHT MODULE, COLOR FILM SUBSTRATE, AND DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/076175
Kind Code:
A1
Abstract:
An optical conversion structure applied to a display device, a backlight module comprising the optical conversion structure, a color film substrate, and a display device. The optical conversion structure comprises a filter structure (100), the filter structure (100) comprising N first optical film layers (110) and N second optical film layers (120) which are alternately arranged and attached to each other, N being an even number; one of the surface (111) of each first optical film layer (110) distant from the corresponding second optical film layer (120) and the surface (121) of each second optical film layer (120) distant from the corresponding first optical film layer (110) is an incident surface (1001) of the filter structure (100), and the other surface is an exit surface (1003); the part of incident light of a first color (101) reflected by the incident surface (1001) is first reflected light, the part reflected by an interface (1002) between each first optical film layer (110) and the corresponding second optical film layer (120) is second reflected light (103), and the optical path difference between the first reflected light (102) and the second reflected light (103) satisfies an integer multiple of the wavelength of the incident light of a first color (101). The optical conversion structure can reflect part of the incident light of a first color (101), so that the incident light of a first color (101) is reused, and therefore, the utilization rate of a light-emitting material in a display device is improved.
Inventors:
WANG RUIYONG (CN)
YOU YANG (CN)
YANG RUIZHI (CN)
QIU YUN (CN)
YOU YANG (CN)
YANG RUIZHI (CN)
QIU YUN (CN)
Application Number:
PCT/CN2018/106000
Publication Date:
April 25, 2019
Filing Date:
September 17, 2018
Export Citation:
Assignee:
BOE TECHNOLOGY GROUP CO LTD (CN)
BEIJING BOE DISPLAY TECH CO (CN)
BEIJING BOE DISPLAY TECH CO (CN)
International Classes:
G02F1/1335; G02B5/20
Foreign References:
| CN106681055A | 2017-05-17 | |||
| US20170242292A1 | 2017-08-24 | |||
| CN103676288A | 2014-03-26 | |||
| CN107505767A | 2017-12-22 | |||
| CN107045226A | 2017-08-15 |
Attorney, Agent or Firm:
LIU, SHEN & ASSOCIATES (CN)
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