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:
Aug. 20, 2019
Filed:
Mar. 10, 2017
Applicant:
Excelliance Mos Corporation, Hsinchu County, TW;
Inventor:
Chu-Kuang Liu, Hsinchu County, TW;
Assignee:
Excelliance MOS Corporation, Hsinchu County, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 29/78 (2006.01); H01L 29/06 (2006.01); H01L 29/423 (2006.01);
U.S. Cl.
CPC ...
H01L 29/7816 (2013.01); H01L 29/0696 (2013.01); H01L 29/4238 (2013.01);
Abstract
A power chip and a transistor structure thereof are provided. The transistor structure includes a semiconductor substrate, a plurality of gate structures, a plurality of first doped regions and a second doped region. The gate structures are disposed on the semiconductor substrate. The first doped regions are formed respectively in a plurality of first areas surrounded by the gate structures. The second doped region is formed in a second area among the gate structures. Each of the gate structures is arranged in an enclosed ring, and the shape of each of the gate structures is octagon.