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. 06, 1987
Filed:
Apr. 29, 1985
Applicant:
Inventor:
Hisao Kawai, Yamanashi, JP;
Assignee:
Hoya Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ; H01J / ; B32B / ; B32B / ;
U.S. Cl.
CPC ...
428690 ; 428691 ; 428917 ; 313509 ; 313503 ; 313506 ;
Abstract
In an electroluminescent panel comprising a transparent electrode, a back electrode, an electroluminescent layer between the transparent and the back electrodes, and a light absorption layer between the electroluminescent layer and the back electrode, the light absorption layer comprises a lower-order oxide of germanium and has a light absorption coefficient which is not smaller than 3.3.times.10.sup.-4 cm.sup.-1. The light absorption coefficient may be discretely or continuously increased from an electroluminescent layer side towards a back electrode side. The light absorption layer may be selectively deposited under the back electrode when it has a low resistivity.