The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 12, 1999
Filed:
Feb. 20, 1996
Applicant:
Inventors:
Takeshi Sano, Hirakata, JP;
Takanori Fujii, Sumoto, JP;
Yuji Hamada, Kadoma, JP;
Kenichi Shibata, Hashimoto, JP;
Kazuhiko Kuroki, Uji, JP;
Assignee:
Sanyo Electric Co., Ltd., Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
428690 ; 428917 ; 313504 ;
Abstract
In an organic electroluminescent device according to the present invention, at least a luminescent layer using an organic material is provided between a hole injection electrode and an electron injection electrode, and a luminescent material composed of a condensed polycyclic aromatic compound having condensed rings each having a benzene ring as a basic unit the number of which is in the range of 2 to 10, along with an organic material having hole transporting characteristics, is contained as the organic material in the luminescent layer.