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. 25, 2014
Filed:
Jul. 03, 2013
Tekcore Co., Ltd., Nantou, TW;
Jen-Inn Chyi, Jung-li, TW;
Lung-Chieh Cheng, Jung-li, TW;
Hsueh-Hsing Liu, Jung-li, TW;
Geng-Yen Lee, Jung-li, TW;
Tekcore Co., Ltd., Nantou, TW;
Abstract
A growth method for reducing defect density of GaN includes steps of: sequentially forming a buffer growth layer, a stress release layer and a first nanometer cover layer on a substrate, wherein the first nanometer cover layer has multiple openings interconnected with the stress release layer; growing a first island in each of the openings; growing a first buffer layer and a second nanometer cover layer on the first island; and growing a second island to form a dislocated island structure. Thus, through the first nanometer cover layer and the second nanometer cover layer, multiple dislocated island structures can be directly formed to reduce manufacturing complexity as well as increase yield rate by decreasing manufacturing environment variation. Further, the epitaxial lateral over growth (ELOG) approach also effectively enhances characteristics of GaN optoelectronic semiconductor elements.