Title:
DISPLAY SUBSTRATE AND DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/201561
Kind Code:
A1
Abstract:
A display substrate and a display device. The display substrate comprises a substrate (10), a light-emitting device layer (20) located on the substrate (10), a filter layer (30) located on the side of the light-emitting device layer (20) facing away from the substrate (10), and an auxiliary layer (40) located on the side of the filter layer (30) facing away from the substrate (10); the light-emitting device layer (20) comprises a plurality of sub-pixels (21), and the plurality of sub-pixels (21) comprise a first sub-pixel (211) emitting blue light and a second sub-pixel (212) emitting non-blue light; the filter layer (30) comprises a light shielding portion (31) provided with a plurality of openings (301) and a plurality of light filtering portions (32) arranged at intervals, and the light filtering portions (32) are at least partially located in the openings (301); an orthographic projection of each opening (301) on the substrate (10) covers an orthographic projection of one sub-pixel (21) on the substrate (10); the transmittance of the auxiliary layer (40) to the blue light is less than the transmittance thereof to the non-blue light, the auxiliary layer (40) is provided with a plurality of first hollow portions (41), and an orthographic projection of the opening (301) corresponding to each first sub-pixel (211) on the substrate (10) falls within an orthographic projection of one first hollow portion (41) on the substrate (10). The phenomenon of bluing of a display area in a non-display state of the display substrate can be improved, and meanwhile, during display, the auxiliary layer has a small influence on emission of light emitted by the blue sub-pixel, thereby ensuring normal display of the display substrate.
Inventors:
QI PUYU (CN)
Application Number:
PCT/CN2022/087866
Publication Date:
October 26, 2023
Filing Date:
April 20, 2022
Export Citation:
Assignee:
BOE TECHNOLOGY GROUP CO LTD (CN)
CHENGDU BOE OPTOELECT TECH CO (CN)
CHENGDU BOE OPTOELECT TECH CO (CN)
International Classes:
H01L27/32; H01L51/52
Foreign References:
| CN110473900A | 2019-11-19 | |||
| CN112106204A | 2020-12-18 | |||
| CN103278876A | 2013-09-04 | |||
| CN107092048A | 2017-08-25 | |||
| CN107316948A | 2017-11-03 | |||
| CN109659340A | 2019-04-19 | |||
| CN110335955A | 2019-10-15 | |||
| CN107565053A | 2018-01-09 | |||
| US20190245017A1 | 2019-08-08 |
Attorney, Agent or Firm:
BEIJING BESTIPR INTELLECTUAL PROPERTY LAW CORPORATION (CN)
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