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:
Dec. 27, 2022
Filed:
Sep. 30, 2020
Applicant:
Alpha and Omega Semiconductor (Cayman) Ltd., Grand Cayman, KY;
Inventors:
Yi Su, Cupertino, CA (US);
Madhur Bobde, Sunnyvale, CA (US);
Assignee:
ALPHA AND OMEGA SEMICONDUCTOR (CAYMAN) LTD., Grand Cayman, KY;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01L 29/78 (2006.01); H01L 21/266 (2006.01); H01L 21/28 (2006.01); H01L 21/306 (2006.01); H01L 21/321 (2006.01); H01L 29/06 (2006.01); H01L 29/08 (2006.01); H01L 29/10 (2006.01); H01L 29/423 (2006.01); H01L 29/45 (2006.01); H01L 29/66 (2006.01); H01L 29/872 (2006.01); H01L 29/47 (2006.01);
U.S. Cl.
CPC ...
H01L 29/7806 (2013.01); H01L 21/266 (2013.01); H01L 21/28035 (2013.01); H01L 21/30604 (2013.01); H01L 21/3212 (2013.01); H01L 29/0634 (2013.01); H01L 29/0696 (2013.01); H01L 29/086 (2013.01); H01L 29/1095 (2013.01); H01L 29/4236 (2013.01); H01L 29/45 (2013.01); H01L 29/47 (2013.01); H01L 29/66143 (2013.01); H01L 29/66734 (2013.01); H01L 29/7811 (2013.01); H01L 29/7813 (2013.01); H01L 29/872 (2013.01);
Abstract
A trench metal-oxide-semiconductor field-effect transistor (MOSFET) device comprises an active cell area including a plurality of superjunction trench power MOSFETs, and a Schottky diode area including a plurality of Schottky diodes formed in the drift region having the superjunction structure. Each of the integrated Schottky diodes includes a Schottky contact between a lightly doped semiconductor layer and a metallic layer.