Invention Grant
- Patent Title: Light-emitting element, display device, electronic device, and lighting device
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Application No.: US15483049Application Date: 2017-04-10
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Publication No.: US10096658B2Publication Date: 2018-10-09
- Inventor: Takeyoshi Watabe , Satomi Mitsumori , Nobuharu Ohsawa , Harue Osaka , Kunihiko Suzuki , Satoshi Seo
- Applicant: Semiconductor Energy Laboratory Co., Ltd.
- Applicant Address: JP Atsugi-shi, Kanagawa-ken
- Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee Address: JP Atsugi-shi, Kanagawa-ken
- Agency: Fish & Richardson P.C.
- Priority: JP2016-086542 20160422
- Main IPC: H01L27/32
- IPC: H01L27/32 ; H01L51/50

Abstract:
Providing a light-emitting element emitting light in a broad emission spectrum. A combination of a first organic compound and a second organic compound forms an exciplex. The first organic compound has a function of converting triplet-excitation energy into light emission. The lowest triplet excitation level of the second organic compound is higher than or equal to the lowest triplet excitation level of the first organic compound, and the lowest triplet excitation level of the first organic compound is higher than or equal to the lowest triplet excitation level of the exciplex. Light emission from a light-emitting layer includes light emission from the first organic compound and light emission from the exciplex.
Public/Granted literature
- US20170309687A1 LIGHT-EMITTING ELEMENT, DISPLAY DEVICE, ELECTRONIC DEVICE, AND LIGHTING DEVICE Public/Granted day:2017-10-26
Information query
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