Title:
LIGHT-EMITTING SUBSTRATE AND LIGHT-EMITTING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2023/050171
Kind Code:
A1
Abstract:
A light-emitting substrate (1) comprises: a base (11), multiple sub-pixels (P) disposed on the base (11), a first light extraction layer (15) and a second light extraction layer (16). Each sub-pixel (P) comprises a light-emitting element (12) disposed on the base (11) and a light conversion pattern (13) disposed on a light-emitting side of the light-emitting element (12), the light-emitting element (12) being configured to emit light of a first color. The multiple sub-pixels (P) comprise at least one first sub-pixel (P1), a light conversion pattern (13) comprised by the at least one first sub-pixel (P1) being a first light conversion pattern (13_1), and the first light conversion pattern (13_1) being configured to convert the light of the first color emitted by the light-emitting element (12) into light of a second color for emission. The first light extraction layer (15) is disposed on a side of the first light conversion pattern (13_1) distant from the light-emitting element (12), and the first light extraction layer (15) is disposed in the area where the at least one first sub-pixel (P1) is located. The first light extraction layer (15) contains an optically active substance, the optically active substance being selected from among materials capable of selectively reflecting the light of the first color, and the refractive index of the second light extraction layer (16) is less than the refractive index of the first light extraction layer (15).
Inventors:
SUN HAIYAN (CN)
ZHANG XIAOJIN (CN)
WANG SIQI (CN)
WANG DAN (CN)
ZHANG XIAOJIN (CN)
WANG SIQI (CN)
WANG DAN (CN)
Application Number:
PCT/CN2021/121760
Publication Date:
April 06, 2023
Filing Date:
September 29, 2021
Export Citation:
Assignee:
BOE TECHNOLOGY GROUP CO LTD (CN)
International Classes:
H01L51/52
Domestic Patent References:
| WO2021065532A1 | 2021-04-08 |
Foreign References:
| CN111063826A | 2020-04-24 | |||
| CN109581733A | 2019-04-05 | |||
| CN111613735A | 2020-09-01 | |||
| CN112310314A | 2021-02-02 | |||
| CN111146263A | 2020-05-12 | |||
| CN110828688A | 2020-02-21 | |||
| CN110366691A | 2019-10-22 | |||
| CN111341939A | 2020-06-26 | |||
| CN108153036A | 2018-06-12 |
Attorney, Agent or Firm:
BEIJING ZBSD PATENT & TRADEMARK AGENT LTD. (CN)
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