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:
May. 18, 2010
Filed:
Apr. 18, 2007
Applicants:
Tomoyuki Tachikawa, Tokorozawa, JP;
Norihito Itoh, Misato, JP;
Keisuke Hashimoto, Abiko, JP;
Inventors:
Assignee:
Dai Nippon Printing Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03C 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
There is provided a process for producing an EL element by photolithography, which process can produce an EL element having improved luminescence efficiency. The production process comprises the steps of removing a photoresist from photoresist layer-covered parts of an electroluminescent layer and cleaning the surface of the electroluminescent layer parts from which the photoresist has been removed.