Invention Grant
- Patent Title: Organic electroluminescent element and electronic device
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Application No.: US17017186Application Date: 2020-09-10
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Publication No.: US11723266B2Publication Date: 2023-08-08
- Inventor: Ryoji Maeda , Satomi Tasaki , Kazuki Nishimura , Yongguk Lee
- Applicant: IDEMITSU KOSAN CO., LTD.
- Applicant Address: JP Tokyo
- Assignee: IDEMITSU KOSAN CO., LTD.
- Current Assignee: IDEMITSU KOSAN CO., LTD.
- Current Assignee Address: JP Tokyo
- Agency: Foley & Lardner LLP
- Priority: JP 19167584 2019.09.13
- Main IPC: C09K11/06
- IPC: C09K11/06 ; H10K85/60 ; C09K11/02 ; H10K50/11 ; H10K101/00

Abstract:
An organic electroluminescence device includes: an anode; a cathode; a first emitting layer, and a second emitting layer, in which the first emitting layer includes a first host material in a form of a first compound represented by a formula (1), the second emitting layer includes a second host material in a form of a second compound represented by a formula (2) and having at least one group represented by a formula (21), and the first emitting layer is in direct contact with the second emitting layer.
Public/Granted literature
- US20210091313A1 ORGANIC ELECTROLUMINESCENT ELEMENT AND ELECTRONIC DEVICE Public/Granted day:2021-03-25
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