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.

Date of Patent:
Apr. 08, 2025

Filed:

Jan. 10, 2024
Applicant:

Fuji Electric Co., Ltd., Kawasaki, JP;

Inventor:

Keiji Okumura, Matsumoto, JP;

Assignee:

FUJI ELECTRIC CO., LTD., Kawasaki, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 29/78 (2006.01); H01L 29/16 (2006.01); H01L 29/49 (2006.01);
U.S. Cl.
CPC ...
H01L 29/7813 (2013.01); H01L 29/1608 (2013.01); H01L 29/4941 (2013.01);
Abstract

A semiconductor device having an active portion and a gate pad portion on a semiconductor substrate includes: a first semiconductor layer of a first conductivity type; and a second semiconductor layer of a second conductivity type. The active portion has: first semiconductor regions of the first conductivity type; a first electrode provided on the first semiconductor regions; and first trenches. The gate pad portion has: a gate electrode pad provided above the second semiconductor layer; second trenches provided beneath the gate electrode pad; and second semiconductor regions of the second conductivity type, each provided in the first semiconductor layer so as to be in contact with a respective one of bottoms of the second trenches. Each of the second trenches is continuous with a respective one of the first trenches. The second semiconductor layer is continuous from the active portion to the gate pad portion.


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Quick Actions:

Okumura, Keiji. (2025). Semiconductor device having base region beneath trench gate (U.S. Patent No. 12272748). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12272748

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