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:
Apr. 10, 1990
Filed:
Jul. 07, 1988
Applicant:
Inventors:
Akiyoshi Mikami, Yamatotakada, JP;
Takashi Ogura, Nara, JP;
Kouji Taniguchi, Nara, JP;
Masaru Yoshida, Nara, JP;
Assignee:
Sharp Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B / ; H05B / ;
U.S. Cl.
CPC ...
313503 ; 313509 ; 2523 / ; 428690 ; 428917 ;
Abstract
A thin film electroluminescent (EL) device which emits a luminescence in response to the application of an electric field, and comprises ZnS as a host material and a rare earth element providing luminescent centers.