Invention Grant
- Patent Title: Light-emitting element, light-emitting device, electronic device, lighting device, and novel organic compound
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Application No.: US17320621Application Date: 2021-05-14
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Publication No.: US11773321B2Publication Date: 2023-10-03
- Inventor: Kyoko Takeda , Harue Osaka , Satoko Shitagaki , Nobuharu Ohsawa , Satoshi Seo , Hiromi Seo
- Applicant: Semiconductor Energy Laboratory Co., Ltd.
- Applicant Address: JP Kanagawa-ken
- Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee Address: JP Kanagawa-ken
- Agency: Husch Blackwell LLP
- Main IPC: C09K11/06
- IPC: C09K11/06 ; H10K85/60 ; H10K50/11 ; H10K50/16 ; H10K85/30 ; H10K101/10 ; H10K101/30
Abstract:
A light-emitting element includes an EL layer between a pair of electrodes. The EL layer contains a first compound and a second compound. The first compound is a phosphorescent iridium metal complex having a LUMO level of greater than or equal to −3.5 eV and less than or equal to −2.5 eV, and the second compound is an organic compound having a pyrimidine skeleton. The light-emitting element includes an EL layer between a pair of electrodes. The EL layer contains a first compound and a second compound. The first compound is a phosphorescent iridium metal complex having a diazine skeleton, and the second compound is an organic compound having a pyrimidine skeleton.
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