Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
ORGANIC LIGHT-EMITTING DIODE AND DISPLAY PANEL
Document Type and Number:
WIPO Patent Application WO/2022/104627
Kind Code:
A1
Abstract:
An organic light-emitting diode and a display panel. The organic light-emitting diode comprises: a first electrode (10), a second electrode (20), a light-emitting layer (14), a hole blocking layer (15), and an electron transport layer (16). The first electrode (10) and the second electrode (20) are arranged opposite to each other. The light-emitting layer (14) is located between the first electrode (10) and the second electrode (20). The hole blocking layer (15) is located between the light-emitting layer (14) and the second electrode (20). The electron transport layer (16) is located between the hole blocking layer (15) and the second electrode (20). The energy level difference between the HOMO energy level of the hole blocking layer (15) and the HOMO energy level of the light-emitting layer (14) is greater than or equal to 0.1 eV, and the energy level difference between the HOMO energy level of the electron transport layer (16) and the HOMO energy level of the hole blocking layer (15) is greater than or equal to 0.1 eV. Therefore, the hole blocking layer (15) and the electron transport layer (16) of the organic light-emitting diode can effectively block the transport of holes from the light-emitting layer (14) to a side of the second electrode (20), and advantageously confine the holes in the light-emitting layer (14), so that the number of electrons and the number of holes in the light-emitting layer (14) can be increased, and more electrons and holes are thus compounded in the light-emitting layer, thereby improving the light-emitting efficiency of the organic light-emitting diode.

Inventors:
CHEN LEI (CN)
QIU LIXIA (CN)
Application Number:
PCT/CN2020/130004
Publication Date:
May 27, 2022
Filing Date:
November 19, 2020
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
BOE TECHNOLOGY GROUP CO LTD (CN)
International Classes:
H01L51/50
Foreign References:
CN111864095A2020-10-30
CN109503466A2019-03-22
CN110407829A2019-11-05
CN110615809A2019-12-27
US20180076391A12018-03-15
Attorney, Agent or Firm:
TEE&HOWE INTELLECTUAL PROPERTY ATTORNEYS (CN)
Download PDF:
View/Download PDF      PDF Help



 
Previous Patent: MICRO-FLUIDIC TECHNOLOGY-BASED MULTIFUNCTIONAL ORGAN CHIP, PREPARATION METHOD THEREFOR AND USE THERE...

Next Patent: POWDER PUFF FOR COSMETIC AND COSMETIC METHOD USING SAME