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Patent Searching and Data


Title:
電界発光素子および発光装置
Document Type and Number:
Japanese Patent JP4391421
Kind Code:
B2
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.

Inventors:
Nakajima Harue
Tetsushi Seo
Takako Takasu
Hiroko Yamazaki
Application Number:
JP2004553158A
Publication Date:
December 24, 2009
Filing Date:
November 12, 2003
Export Citation:
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Assignee:
Semiconductor Energy Laboratory Co., Ltd.
International Classes:
H01L51/50; C09K11/06; H01L51/30; H05B33/14; C07D309/34; C07D455/04; C07F7/00
Domestic Patent References:
JP9272865A
JP2000053957A
JP2001076879A
JP2001043976A
Foreign References:
US6210814