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:
Jul. 24, 2012
Filed:
Dec. 04, 2009
Applicant:
Choul Joo Ko, Seongnam-si, KR;
Inventor:
Choul Joo Ko, Seongnam-si, KR;
Assignee:
Dongbu HiTek Co., Ltd., Seoul, KR;
Primary Examiner:
Int. Cl.
CPC ...
H01L 27/092 (2006.01); H01L 29/76 (2006.01);
U.S. Cl.
CPC ...
Abstract
A semiconductor device and a method for manufacturing the same are disclosed. The semiconductor device includes a substrate having a first conductor-type, a buried layer of a second conductor-type on the substrate, a drain, and a first guard-ring on one side of the drain, a second guard-ring on one side of the first guard-ring, and a third guard-ring on one side of the second guard-ring.