Title:
ORGANIC ELECTROLUMINESCENT ELEMENT
Document Type and Number:
WIPO Patent Application WO/2010/119891
Kind Code:
A1
Abstract:
Disclosed is an organic electroluminescent element which can be produced by a wet process, has improved laminated structure, and also has improved external quantum efficiency and an improved service life. The organic electroluminescent element comprises at least an anode, a cathode and a laminated structure intercalated between the anode and the cathode, all of which are arranged on a substrate, wherein the laminated structure has at least four layers formed by a wet process, and wherein the layers produced by the wet process include at least a hole injection layer, a hole transport layer and a light-emitting layer. The organic electroluminescent element is characterized in that the hole injection layer comprises an electrically conductive polymer, the hole transport layer comprises a polymeric compound having a repeating unit represented by general formula (1), and the polymeric compound has a weight average molecular weight of 50,000 to 200,000 in terms of polystyrene content.
Inventors:
MUROTA KAZUTOSHI (JP)
IWASAKI TOSHIHIKO (JP)
IWASAKI TOSHIHIKO (JP)
Application Number:
PCT/JP2010/056672
Publication Date:
October 21, 2010
Filing Date:
April 14, 2010
Export Citation:
Assignee:
KONICA MINOLTA HOLDINGS INC (JP)
MUROTA KAZUTOSHI (JP)
IWASAKI TOSHIHIKO (JP)
MUROTA KAZUTOSHI (JP)
IWASAKI TOSHIHIKO (JP)
International Classes:
H01L51/50; C08G61/12; H05B33/10
Domestic Patent References:
| WO2008146838A1 | 2008-12-04 | |||
| WO2006095553A1 | 2006-09-14 | |||
| WO2009063850A1 | 2009-05-22 |
Foreign References:
| JP2008280385A | 2008-11-20 | |||
| JP2009059767A | 2009-03-19 | |||
| JP2004265672A | 2004-09-24 | |||
| JP2006316280A | 2006-11-24 |
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