Invention Grant
- Patent Title: Electroluminescent element and light emitting device
- Patent Title (中): 电致发光元件和发光装置
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Application No.: US10715106Application Date: 2003-11-17
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Publication No.: US07476451B2Publication Date: 2009-01-13
- Inventor: Harue Nakashima , Satoshi Seo , Takako Takasu , Hiroko Yamazaki
- Applicant: Harue Nakashima , Satoshi Seo , Takako Takasu , Hiroko Yamazaki
- Applicant Address: JP
- Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee Address: JP
- Agency: Cook Alex Ltd.
- Priority: JP2002-337623 20021121
- Main IPC: H01L51/50
- IPC: H01L51/50

Abstract:
There is provided an electroluminescent element using a material that is excellent in film forming properties and carrier transporting properties, emits a light in the solid state, and can be suitably used also as a host material. The electroluminescent element has an electroluminescence layer between a couple of electrodes, and a complex of a Group 4 metal of the periodic table, which is excellent in the film forming properties and the carrier transporting properties and capable of emitting a light in the solid state, is used in a part of the electroluminescence layer to form the electroluminescent element. The complex of a Group 4 metal of the periodic table has an emission wavelength on a longer wavelength side as compared with conventional host materials such as Alq3, and thereby may be combined with a red light emitting guest material to form a light emitting layer.
Public/Granted literature
- US20040247936A1 Electroluminescent element and light emitting device Public/Granted day:2004-12-09
Information query
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