- 专利标题: Light emitting device and manufacturing method thereof and display panel
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申请号: US17412460申请日: 2021-08-26
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公开(公告)号: US11758747B2公开(公告)日: 2023-09-12
- 发明人: Shu Jing , Xiaobo Du
- 申请人: BOE TECHNOLOGY GROUP CO., LTD.
- 申请人地址: CN Beijing
- 专利权人: BOE TECHNOLOGY GROUP CO., LTD.
- 当前专利权人: BOE TECHNOLOGY GROUP CO., LTD.
- 当前专利权人地址: CN Beijing
- 代理机构: Houtteman Law LLC
- 优先权: CN 2010911623.X 2020.09.02
- 主分类号: H01L51/50
- IPC分类号: H01L51/50 ; H10K50/13 ; H10K50/19 ; H10K71/00 ; H10K85/60 ; H10K101/30 ; H10K102/00
摘要:
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.
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