Invention Grant
- Patent Title: Light-emitting element, light-emitting device, and electronic device
- Patent Title (中): 发光元件,发光元件及电子元件
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Application No.: US11821757Application Date: 2007-06-25
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Publication No.: US07902742B2Publication Date: 2011-03-08
- Inventor: Tsunenori Suzuki , Satoshi Seo , Ryoji Nomura
- Applicant: Tsunenori Suzuki , Satoshi Seo , Ryoji Nomura
- 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: JP2006-184350 20060704; JP2006-327609 20061204
- Main IPC: H05B33/00
- IPC: H05B33/00

Abstract:
The light-emitting element of the present invention includes a light-emitting layer and a layer for controlling movement of carriers between a pair of electrodes. The layer for controlling movement of carriers includes a first organic compound having a carrier transporting property and a second organic compound for reducing the carrier transporting property of the first organic compound, and the second organic compound is dispersed in the first organic compound. The layer for controlling movement of carriers is provided in such a manner, whereby change in carrier balance with time can be suppressed. Therefore, a light-emitting element having a long lifetime can be obtained.
Public/Granted literature
- US20080007165A1 Light-emitting element, light-emitting device, and electronic device Public/Granted day:2008-01-10
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