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:
Oct. 25, 1994
Filed:
Dec. 20, 1991
Kenichi Kondo, Fujisawa, JP;
Takahiro Saida, Yokohama, JP;
Shuichi Taya, Yokohama, JP;
Toyoshi Iida, Tsukuba, JP;
Takeshi Sotomura, Tsukuba, JP;
Yuko Fujii, Tsukuba, JP;
Keiji Sato, Tsukuba, JP;
Mamoru Takahashi, Gunma, JP;
Sadayasu Yamakawa, Nagai, JP;
Shunichi Osawa, Nagai, JP;
Stanley Electric Co., Ltd., Tokyo, JP;
Japan Metals & Chemicals Co., Ltd., Tokyo, JP;
Abstract
An EL lamp having a higher luminescence efficiency and a process for manufacturing the same are provided. The EL element includes an aluminum foil having at least one specularly polished surface, an anodized oxide film formed on the specularly polished surface of the aluminum foil, a light emitting EL layer formed directly on the film, and a transparent electrode formed on the light emitting EL layer. The process for manufacturing an EL lamp includes the steps of polishing specularly at least one of the surfaces of an aluminum foil, forming an anodized oxide film on the specularly polished surface of the aluminum foil, and forming directly on the aluminum oxide film a light emitting EL layer and a transparent electrode.