Invention Grant
- Patent Title: Light-emitting element, light-emitting device, electronic device, and lighting device
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Application No.: US15999406Application Date: 2018-08-20
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Publication No.: US11043637B2Publication Date: 2021-06-22
- Inventor: Takao Hamada , Hiromi Seo , Kanta Abe , Kyoko Takeda , Satoshi 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: Fish & Richardson P.C.
- Priority: JP2012-172944 20120803,JP2013-045127 20130307
- Main IPC: H01L51/50
- IPC: H01L51/50 ; H01L51/00 ; C07D209/86 ; C09K11/02 ; C09K11/06

Abstract:
A light-emitting element having a long lifetime is provided. A light-emitting element exhibiting high emission efficiency in a high luminance region is provided. A light-emitting element includes a light-emitting layer between a pair of electrodes. The light-emitting layer contains a first organic compound, a second organic compound, and a phosphorescent compound. The first organic compound is represented by a general formula (G0). The molecular weight of the first organic compound is greater than or equal to 500 and less than or equal to 2000. The second organic compound is a compound having an electron-transport property. In the general formula (G0), Ar1 and Ar2 each independently represent a fluorenyl group, a spirofluorenyl group, or a biphenyl group, and Ar3 represents a substituent including a carbazole skeleton.
Public/Granted literature
- US20190013468A1 Light-emitting element, light-emitting device, electronic device, and lighting device Public/Granted day:2019-01-10
Information query
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