Title:
ORGANIC ELECTROLUMINESCENT ELEMENT
Document Type and Number:
WIPO Patent Application WO/2010/114021
Kind Code:
A1
Abstract:
Disclosed is an organic EL element which comprises a positive electrode, a negative electrode, and an organic thin film layer that is arranged between the positive electrode and the negative electrode. The organic thin film layer comprises a light-emitting layer that contains a host material and a light-emitting material. The hole-transporting layer comprises a first hole-transporting layer and a second hole-transporting layer, sequentially from the positive electrode side, and the first hole-transporting layer contains a specific amine compound and the second hole-transporting layer contains a specific amine compound; or alternatively, the hole-transporting layer comprises a layer that contains a specific electron-accepting compound. Consequently, the organic EL element has lower driving voltage and high luminous efficiency, thereby being excellently practical.
Inventors:
YABUNOUCHI NOBUHIRO (JP)
ARAKANE TAKASHI (JP)
NISHIMURA KAZUKI (JP)
HOSOKAWA CHISHIO (JP)
ARAKANE TAKASHI (JP)
NISHIMURA KAZUKI (JP)
HOSOKAWA CHISHIO (JP)
Application Number:
PCT/JP2010/055855
Publication Date:
October 07, 2010
Filing Date:
March 31, 2010
Export Citation:
Assignee:
IDEMITSU KOSAN CO (JP)
YABUNOUCHI NOBUHIRO (JP)
ARAKANE TAKASHI (JP)
NISHIMURA KAZUKI (JP)
HOSOKAWA CHISHIO (JP)
YABUNOUCHI NOBUHIRO (JP)
ARAKANE TAKASHI (JP)
NISHIMURA KAZUKI (JP)
HOSOKAWA CHISHIO (JP)
International Classes:
H01L51/50; C09K11/06
Domestic Patent References:
| WO2010044130A1 | 2010-04-22 | |||
| WO2009099060A1 | 2009-08-13 | |||
| WO2009084268A1 | 2009-07-09 |
Foreign References:
| JP2009298767A | 2009-12-24 | |||
| JP2007110093A | 2007-04-26 | |||
| JPH11273860A | 1999-10-08 |
Attorney, Agent or Firm:
OHTANI, Tamotsu et al. (JP)
Tamotsu Otani (JP)
Tamotsu Otani (JP)
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