Title:
ORGANIC ELECTROLUMINESCENT DEVICE AND PREPARATION METHOD THEREFOR, AND DISPLAY APPARATUS
Document Type and Number:
WIPO Patent Application WO/2022/226718
Kind Code:
A1
Abstract:
An organic electroluminescent device and a preparation method therefor, and a display apparatus. The organic electroluminescent device comprises an anode, a cathode, and a light-emitting layer and an electron transport layer arranged between the anode and the cathode, the electron transport layer being arranged between the light emitting layer and the cathode; the electron transport layer comprises a first host material and a second host material, the mixing ratio of the first host material and the second host material on the side of the electron transport layer closest to the light emitting layer being different to the mixing ratio of the first host material and the second host material on the side of the electron transport layer furthest from the light emitting layer.
Inventors:
ZHANG ZHIHUI (CN)
FAN YAN (CN)
FAN XING (CN)
JING SHU (CN)
LIU HUAMENG (CN)
SHEN KUO (CN)
FAN YAN (CN)
FAN XING (CN)
JING SHU (CN)
LIU HUAMENG (CN)
SHEN KUO (CN)
Application Number:
PCT/CN2021/089833
Publication Date:
November 03, 2022
Filing Date:
April 26, 2021
Export Citation:
Assignee:
BOE TECHNOLOGY GROUP CO LTD (CN)
International Classes:
H01L51/50
Foreign References:
| JP2009212235A | 2009-09-17 | |||
| CN112151689A | 2020-12-29 | |||
| CN106784355A | 2017-05-31 | |||
| CN108539034A | 2018-09-14 | |||
| CN104064690A | 2014-09-24 | |||
| US20120199837A1 | 2012-08-09 |
Attorney, Agent or Firm:
AFD CHINA INTELLECTUAL PROPERTY LAW OFFICE (CN)
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