Title:
ORGANIC ELECTROLUMINESCENT DEVICE AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2004/089043
Kind Code:
A1
Abstract:
An organic electroluminescent device is formed by stacking a plurality of layers, each of which is composed of a polymer material which is soluble to an organic solvent. The polymer material used for a foundation layer has a larger molecular weight than the polymer material used for a layer formed on the foundation layer. The organic solvent into which the polymer material for the foundation layer is dissolved has a larger relative dielectric constant than the organic solvent into which the polymer material for the upper layer is dissolved. When the foundation layer serves as a light-emitting layer and the upper layer serves as an electron-transporting layer, the electron-transporting layer may preferably contain a polymer material having hole-blocking properties. In such a case where the foundation layer serves as the light-emitting layer and the upper layer serves as the electron-transporting layer, it is also preferable that repeating units of the polymer material of the light-emitting layer and those of the polymer material of the electron-transporting layer have the same skeletons.
Inventors:
HIRAYAMA YASUKO
SANO TAKESHI
SAKAKIBARA TAKAHISA
SANO TAKESHI
SAKAKIBARA TAKAHISA
Application Number:
PCT/JP2004/004104
Publication Date:
October 14, 2004
Filing Date:
March 24, 2004
Export Citation:
Assignee:
SANYO ELECTRIC CO (JP)
HIRAYAMA YASUKO
SANO TAKESHI
SAKAKIBARA TAKAHISA
HIRAYAMA YASUKO
SANO TAKESHI
SAKAKIBARA TAKAHISA
International Classes:
C08L65/00; C09K11/06; H01L51/50; H05B33/00; H05B33/10; H05B33/12; H05B33/14; H05B33/22; H01L51/00; H01L51/30; H01L51/56; (IPC1-7): H05B33/14; H05B33/10; H05B33/22; C09K11/06; C08L65/00
Foreign References:
| JP2003045664A | 2003-02-14 | |||
| JP2000223278A | 2000-08-11 | |||
| JP2002105445A | 2002-04-10 |
Attorney, Agent or Firm:
Fukushima, Yoshito (4-1 Hiroshiba-cho, Suita-sh, Osaka 52, JP)
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