Invention Grant
- Patent Title: Light-emitting element, display element, display device, electronic device, and lighting device
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Application No.: US15050779Application Date: 2016-02-23
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Publication No.: US09755174B2Publication Date: 2017-09-05
- Inventor: Shogo Uesaka , Nobuharu Ohsawa
- Applicant: Semiconductor Energy Laboratory Co., Ltd.
- Applicant Address: JP
- Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee Address: JP
- Agency: Husch Blackwell LLP
- Priority: JP2015-035678 20150225
- Main IPC: H01L51/50
- IPC: H01L51/50

Abstract:
A light-emitting element with high emission efficiency which includes a plurality of light-emitting layers and exhibits multi-color light emission is provided. The light-emitting element includes a first electrode, a second electrode, and an EL layer between the first electrode and the second electrode. The EL layer includes a first injection layer, a first light-emitting layer, and a second light-emitting layer in a first region, and a second injection layer, the first light-emitting layer, and the second light-emitting layer in a second region. The first light-emitting layer includes a first light-emitting material and a first host material, and the second light-emitting layer includes a second light-emitting material and a second host material. A color of light emitted from the first region is different from that of light emitted from the second region.
Public/Granted literature
- US20160248033A1 Light-Emitting Element, Display Element, Display Device, Electronic Device, and Lighting Device Public/Granted day:2016-08-25
Information query
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