Invention Grant
- Patent Title: Light-emitting element, lighting device, light-emitting device, and electronic device
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Application No.: US17411660Application Date: 2021-08-25
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Publication No.: US11462704B2Publication Date: 2022-10-04
- Inventor: Takahiro Ushikubo
- 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
- Priority: JP2007-250512 20070927
- Main IPC: H01L51/50
- IPC: H01L51/50 ; H01L51/00 ; H01L27/32

Abstract:
A light-emitting element whose degree of deterioration with driving time is improved and of which emission colors are easily controlled. A light-emitting emitting element having a first electrode, a second electrode, and a layer containing an organic compound located between the first electrode and the second electrode, in which the layer containing the organic compound at least has, from the second electrode side, a light-emitting layer in which a first layer, a second layer, and a third layer are stacked, and a hole-transporting layer provided in contact with the third layer; the first layer contains a first organic compound and a second organic compound; the second layer contains a third organic compound and a fourth organic compound; and the third layer contains the first organic compound and a fifth organic compound.
Public/Granted literature
- US20210384455A1 Light-Emitting Element, Lighting Device, Light-Emitting Device, and Electronic Device Public/Granted day:2021-12-09
Information query
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