Title:
LIGHT-EMITTING DEVICE AND DISPLAY APPARATUS
Document Type and Number:
WIPO Patent Application WO/2023/225933
Kind Code:
A1
Abstract:
The present application relates to the technical field of display, and provided thereby are a light-emitting device and a display apparatus. The light-emitting device comprises a light-emitting layer, comprising a first sub-layer, a second sub-layer and a third sub-layer. The second sub-layer is arranged between the first sub-layer and the third sub-layer. The second sub-layer comprises a host material and a guest material. Under the action of external energy, excitons are compounded in the second sub-layer. The first sub-layer and the third sub-layer both comprise the host material. The concentration of excitons in the second sub-layer is greater than the concentration of exciton in the first sub-layer. Furthermore, the concentration of excitons in the second sub-layer is greater than the concentration of excitons in the third sub-layer. In the light-emitting device provided by the present application, by means of the concentration of excitons being highest in the second sub-layer, the main light-emitting region must be located in the second sub-layer under the action of external energy, that is, the main light-emitting region is located in the middle of the light-emitting layer.
Inventors:
ZHANG SHENGDE (CN)
XU RUIQIAN (CN)
YUAN DE (CN)
ZHANG CAN (CN)
XIANG JIE (CN)
YANG JIAN (CN)
SHANG FEI (CN)
CAO LIANG (CN)
GONG XU (CN)
XU RUIQIAN (CN)
YUAN DE (CN)
ZHANG CAN (CN)
XIANG JIE (CN)
YANG JIAN (CN)
SHANG FEI (CN)
CAO LIANG (CN)
GONG XU (CN)
Application Number:
PCT/CN2022/095200
Publication Date:
November 30, 2023
Filing Date:
May 26, 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; H01L51/50
Foreign References:
| CN110635061A | 2019-12-31 | |||
| CN103887436A | 2014-06-25 | |||
| CN103730590A | 2014-04-16 | |||
| CN108281559A | 2018-07-13 | |||
| CN103887435A | 2014-06-25 | |||
| CN109860407A | 2019-06-07 | |||
| CN1809236A | 2006-07-26 |
Attorney, Agent or Firm:
BEIJING RUN ZEHENG INTELLECTUAL PROPERTY LAW FIRM (CN)
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