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:
Jan. 18, 2022
Filed:
Jun. 08, 2020
Infineon Technologies Austria Ag, Villach, AT;
Markus Zundel, Egmating, DE;
Franz Hirler, Isen, DE;
Infineon Technologies Austria AG, Villach, AT;
Abstract
A transistor device includes at least one transistor cell which includes: a source region, a body region and a drift region in a semiconductor body; a gate electrode dielectrically insulated from the body region by a gate dielectric; a field electrode dielectrically insulated from the drift region by a field electrode dielectric; and a contact plug extending from a first surface of the semiconductor body to the field electrode. A portion of the semiconductor body is arranged between the field electrode trench and the first surface of the semiconductor body. The portion of the semiconductor body that is arranged between the field electrode trench and the first surface comprises the body region. The body region directly contacts the upper surface of the field electrode dielectric.