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. 02, 2019
Filed:
Nov. 03, 2017
Toyoda Gosei Co., Ltd., Kiyosu-shi, JP;
Shingo Totani, Kiyosu, JP;
TOYODA GOSEI CO., LTD., Kiyosu-Shi, Aichi-Ken, JP;
Abstract
A transparent electrode is formed on a region for forming a reflective electrode later on the p-type layer. Subsequently, a part of the surface of the p-type layer is dry etched to expose the n-type layer. On the p-type layer and the n-type layer exposed in the previous step, a resist layer with an opening is formed through photolithography. The opening has a pattern in which the center of the transparent electrode is exposed and the ends of the opening are covered with the resist layer. Next, the transparent electrode is wet etched. A reflective film is formed on the p-type layer and the resist layer, to remove the resist layer. Thus, only the reflective film on the p-type layer is left to form a reflective electrode. Then, a cover metal layer is continuously formed over the reflective electrode and the transparent electrode.