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. 03, 2015
Filed:
Jan. 15, 2013
Applicant:
Anpec Electronics Corporation, Hsin-Chu, TW;
Inventor:
Yung-Fa Lin, Hsinchu, TW;
Assignee:
Anpec Electronics Corporation, Hsinchu Science Park, Hsin-Chu, TW;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01L 29/78 (2006.01);
U.S. Cl.
CPC ...
H01L 29/7827 (2013.01);
Abstract
A semiconductor power device includes an epitaxial layer grown on a semiconductor substrate; an ion well with a junction depth in the epitaxial layer; a gate trench with a depth deeper than the junction depth in the ion well; a gate oxide layer in the gate trench; a gate embedded the gate trench; and a pocket doping region in the epitaxial layer. The pocket doping region is adjacent to and covers at least a corner of the gate trench.