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, 2020
Filed:
Feb. 20, 2018
Polar Semiconductor, Llc, Bloomington, MN (US);
Sanken Electric Co., Ltd., Saitama, JP;
Dosi Dosev, Woodbury, MN (US);
Don Rankila, Farmington, MN (US);
Tatsuya Kamimura, St. Louis Park, MN (US);
Shunsuke Fukunaga, Saitama, JP;
Steven Kosier, Lakeville, MN (US);
Peter West, Minneapolis, MN (US);
POLAR SEMICONDUCTOR, LLC, Bloomington, MN (US);
SANKEN ELECTRIC CO., LTD., Saitama, JP;
Abstract
A trench semiconductor device includes a layer of semiconductor material, an exterior trench pattern formed in the layer of semiconductor material, and an interior trench pattern formed in the layer of semiconductor material, at least partially surrounded by the exterior trench pattern. The exterior trench pattern includes a plurality of exterior trench portions that are each lined with dielectric material and filled with conductive material, and the interior trench pattern includes a plurality of interior trench portions that are each lined with dielectric material and filled with conductive material.