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.: US14029208Application Date: 2013-09-17
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Publication No.: US09502666B2Publication Date: 2016-11-22
- Inventor: Tomonori Nakayama , Takako Takasu , Satoko Shitagaki , Harue Osaka , Toshiki Hamada
- 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: JP2012-208080 20120921
- Main IPC: H01L51/00
- IPC: H01L51/00 ; C09K11/06 ; H05B33/14 ; H01L51/50
Abstract:
A light-emitting element emitting phosphorescence and having high emission efficiency, in which a property of injecting holes to a light-emitting layer is increased, is provided. The light-emitting layer of the light-emitting element includes a first organic compound represented by the following general formula (G1) and a second organic compound which is a phosphorescent compound. The difference between the HOMO level of the first organic compound and the HOMO level of the second organic compound is lower than or equal to 0.3 eV.
Public/Granted literature
- US20140084273A1 Light-Emitting Element, Light-Emitting Device, Electronic Device, and Lighting Device Public/Granted day:2014-03-27
Information query
IPC分类:
