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:
Feb. 15, 2011
Filed:
Aug. 15, 2007
Hisao Kawasaki, Kawasaki, JP;
Hisao Kawasaki, Kawasaki, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A semiconductor device includes a substrate including a compound semiconductor, a semiconductor layer formed on a surface of the substrate and a constituent of the semiconductor layer including a nitride semiconductor different from a constituent of the substrate, a via hole provided in the substrate and configured to extend from a rear surface side of the substrate to the semiconductor layer, a ground electrode formed on an inner wall of the via hole, a contact layer provided in the semiconductor layer and configured to extend from a surface of the semiconductor layer to the ground electrode, a gate electrode and a drain electrode, each of which being formed on the semiconductor layer, and a source electrode formed on the semiconductor layer and connected to the ground electrode through the contact layer.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile