Title:
QUANTUM DOT LIGHT EMITTING DEVICE AND MANUFACTURING METHOD THEREFOR, AND DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/062718
Kind Code:
A1
Abstract:
The present application discloses a quantum dot light emitting device and a manufacturing method therefor, and a display device. In the present application, at least one layer of at least one light emitting functional layer is provided to comprise at least two sub-functional layers, each sub-functional layer comprises a ligand, and in the transport direction of carriers in the sub-functional layers, the surface energies of the ligands corresponding to the sub-functional layers change in a gradient manner, so that the energy levels of the sub-functional layers change in a gradient manner. In this way, the energy level of each sub-functional layer can match the energy level of the adjacent light emitting functional layer, so that the carrier transport and balance can be improved and the device efficiency can be improved.
Inventors:
MEI WENHAI (CN)
LU ZHIGAO (CN)
LU ZHIGAO (CN)
Application Number:
PCT/CN2021/111093
Publication Date:
March 31, 2022
Filing Date:
August 06, 2021
Export Citation:
Assignee:
BOE TECHNOLOGY GROUP CO LTD (CN)
BEIJING BOE TECHNOLOGY DEV CO LTD (CN)
BEIJING BOE TECHNOLOGY DEV CO LTD (CN)
International Classes:
H01L51/50
Foreign References:
| CN112151689A | 2020-12-29 | |||
| CN110289360A | 2019-09-27 | |||
| CN105161635A | 2015-12-16 | |||
| CN109817772A | 2019-05-28 | |||
| CN107342367A | 2017-11-10 | |||
| CN109728179A | 2019-05-07 | |||
| US20080118755A1 | 2008-05-22 |
Attorney, Agent or Firm:
BEIJING RUN ZEHENG INTELLECTUAL PROPERTY LAW FIRM (CN)
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