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.: US14513982Application Date: 2014-10-14
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Publication No.: US09379345B2Publication Date: 2016-06-28
- Inventor: Satoshi Seo , Shogo Uesaka , Ryohei Yamaoka
- 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: JP2013-215721 20131016; JP2014-101204 20140515
- Main IPC: H01L51/50
- IPC: H01L51/50 ; H01L51/52 ; H01L27/32 ; H01L51/00

Abstract:
A light-emitting element with high reliability that can keep favorable characteristics after long-time driving is provided. In addition, a light-emitting device having a long lifetime including the light-emitting element is provided. Moreover, an electronic device and a lighting device having a long lifetime are provided. In a light-emitting element including an EL layer between a pair of electrodes, a light-emitting layer included in the EL layer has a stacked-layer structure which is different from the conventional structure, whereby the light-emitting element can keep favorable characteristics after long-time driving even in the case where carrier balance is changed over time due to driving of the light-emitting element or a light-emitting region is shifted due to the change.
Public/Granted literature
- US20150102331A1 Light-Emitting Element, Light-Emitting Device, Electronic Device, and Lighting Device Public/Granted day:2015-04-16
Information query
IPC分类: