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:
Mar. 18, 2014
Filed:
Mar. 15, 2012
Shingo Totani, Kiyosu, JP;
Masashi Deguchi, Kiyosu, JP;
Shingo Totani, Kiyosu, JP;
Masashi Deguchi, Kiyosu, JP;
Toyoda Gosei Co., Ltd., Kiyosu-shi, Aichi-ken, JP;
Abstract
A reflective film including Ag of an Ag alloy is patterned in a uniform thickness without decreasing reflectivity. The reflective film is formed on the entire surface of a first insulating film by sputtering, vacuum deposition or the like, and a barrier metal film having a given pattern is formed on the reflective film by a lift-off method. The reflective film is wet etched using a silver etching liquid. The barrier metal film is not wet etched by the silver etching liquid, and therefore functions as a mask, and the reflective film in a region on which the barrier metal film has been formed remains not etched. As a result, the reflective film having a desired patter can uniformly be formed on the first insulating film.