Invention Grant
- Patent Title: Light-emitting element, light-emitting device, electronic device, and lighting device
- Patent Title (中): 发光元件,发光元件,电子元件及照明器具
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Application No.: US13040511Application Date: 2011-03-04
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Publication No.: US09012041B2Publication Date: 2015-04-21
- Inventor: Hiromi Nowatari , Satoshi Seo
- Applicant: Hiromi Nowatari , Satoshi Seo
- 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: JP2010-050451 20100308
- Main IPC: H01L51/54
- IPC: H01L51/54 ; C09K11/06 ; H01L51/50 ; H01L51/00

Abstract:
A light-emitting element includes an EL layer between an anode and a cathode, and a first layer, a second layer, and a third layer between the cathode and the EL layer. The first layer provided between the cathode and the second layer is in contact with the cathode and the second layer, and includes a substance having a hole-transport property and an acceptor substance. The second layer provided between the first layer and the third layer is in contact with the first layer and the third layer, and includes a phthalocyanine-based material. The third layer provided between the second layer and the EL layer is in contact with the second layer and the EL layer, and includes an alkali metal, an alkaline-earth metal, a rare-earth metal, an alkali metal compound, an alkaline-earth metal compound, or a rare-earth metal compound.
Public/Granted literature
- US20110215307A1 Light-Emitting Element, Light-Emitting Device, Electronic Device, and Lighting Device Public/Granted day:2011-09-08
Information query
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