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:
Aug. 24, 2004
Filed:
Jan. 21, 2003
Applicant:
Inventors:
Yoshihiko Yano, Tokyo, JP;
Jun Hirabayashi, Tokyo, JP;
Katsuto Nagano, Tokyo, JP;
Mutsuko Nakano, Tokyo, JP;
Assignee:
TDK Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H05B 3/300 ;
U.S. Cl.
CPC ...
H05B 3/300 ;
Abstract
An EL panel for providing a display of three colors, comprising at least EL phosphor thin films of two types for emitting green and blue colors, and a red light emitting portion, the EL phosphor thin films of two types for emitting green and blue colors comprising an alkaline earth sulfide or oxide. The EL panel, especially full color EL panel can produce light of an improved color purity without a need for a RGB patterned filter.