Invention Grant
- Patent Title: Light emitting device and manufacturing method thereof and display panel
-
Application No.: US17412460Application Date: 2021-08-26
-
Publication No.: US11758747B2Publication Date: 2023-09-12
- Inventor: Shu Jing , Xiaobo Du
- Applicant: BOE TECHNOLOGY GROUP CO., LTD.
- Applicant Address: CN Beijing
- Assignee: BOE TECHNOLOGY GROUP CO., LTD.
- Current Assignee: BOE TECHNOLOGY GROUP CO., LTD.
- Current Assignee Address: CN Beijing
- Agency: Houtteman Law LLC
- Priority: CN 2010911623.X 2020.09.02
- Main IPC: H01L51/50
- IPC: H01L51/50 ; H10K50/13 ; H10K50/19 ; H10K71/00 ; H10K85/60 ; H10K101/30 ; H10K102/00

Abstract:
The present disclosure provides a light emitting device including: a first electrode; a first light emitting layer on a side of the first electrode; an N-type charge generation layer on a side of the first light emitting layer distal to the first electrode; a P-type charge generation layer on a side of the N-type charge generation layer distal to the first light emitting layer; a second light emitting layer on a side of the P-type charge generation layer distal to the N-type charge generation layer; and a second electrode on a side of the second light emitting layer distal to the P-type charge generation layer. The N-type charge generation layer includes a host material which has a lowest unoccupied molecular orbital energy level less than or equal to −2.9 and a glass transition temperature greater than 130° C.
Public/Granted literature
- US20220069247A1 LIGHT EMITTING DEVICE AND MANUFACTURING METHOD THEREOF AND DISPLAY PANEL Public/Granted day:2022-03-03
Information query
IPC分类: