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. 08, 1991
Filed:
Feb. 17, 1989
Applicant:
Inventors:
Seizi Huzino, Anjo, JP;
Shinya Mizuki, Nukata, JP;
Masumi Arai, Nukata, JP;
Tadashi Hattori, Okazaki, JP;
Assignee:
Nippon Soken, Inc., Nishio, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
428690 ; 313503 ; 313506 ; 428691 ;
Abstract
A thin film electroluminescent element has a substrate, a transparent electrode formed on the substrate, a luminescent film wherein two kinds of luminescent centers are distributed in layers within a basic luminescent material, formed on the transparent electrode through an insulating film, and a back electrode formed on the luminescent film through another insulating film. The luminescent film of this thin film electroluminescent element can emit white light of excellent tone, including lights of three primary colors with sufficiently large luminous intensity.