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:
Mar. 04, 2003
Filed:
Sep. 15, 2000
Applicant:
Inventors:
Harumi Suzuki, Kariya, JP;
Tetsuya Kato, Anjo, JP;
Assignee:
Denso Corporation, Kariya, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B 3/300 ;
U.S. Cl.
CPC ...
H05B 3/300 ;
Abstract
An organic EL element includes a luminescent layer containing an organic compound and sandwiched between an anode and a cathode. The luminescent layer is composed of a hole-transporting luminescent layer and an electron-transporting luminescent layer. Both luminescent layers emit light simultaneously. Each of the hole-transporting luminescent layer and the electron-transporting luminescent layer includes two or more kinds of fluorescent materials so that the emission spectrum from the hole-transporting luminescent layer substantially confirms the emission spectrum from of the electron-transporting luminescent layer.