Invention Grant
- Patent Title: Organic light-emitting element and light-emitting device with the organic light-emitting element
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Application No.: US14700642Application Date: 2015-04-30
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Publication No.: US09385339B2Publication Date: 2016-07-05
- Inventor: Hiroko Yamazaki , Satoshi Seo
- Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
- Applicant Address: JP Kanagawa-ken
- Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee Address: JP Kanagawa-ken
- Agency: Nixon Peabody LLP
- Agent Jeffrey L. Costellia
- Priority: JP2002-378523 20021226
- Main IPC: H01L51/50
- IPC: H01L51/50 ; H01L33/50 ; H01L51/56 ; H01L27/32 ; H01L51/52 ; H01L51/00
Abstract:
The present invention provides a white organic light-emitting element high in the emission efficiency. In particular, the invention provides a white organic light-emitting element that has an emission spectrum having peaks in the respective wavelength regions of red color, green color and blue color and is high in the emission efficiency. It is preferable to use an electron transport material between a first emission region and a second emission region and more preferable to use a hole block material.
Public/Granted literature
- US20150287952A1 ORGANIC LIGHT-EMITTING ELEMENT AND LIGHT-EMITTING DEVICE WITH THE ORGANIC LIGHT-EMITTING ELEMENT Public/Granted day:2015-10-08
Information query
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