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:
Aug. 08, 2006
Filed:
Jan. 14, 2005
Hajime Matsuda, Yamanashi, JP;
Hajime Matsuda, Yamanashi, JP;
Eudyna Devices, Inc., Yamanishi, JP;
Abstract
A semiconductor device includes a compound semiconductor substrate, a channel layer provided on the compound semiconductor substrate, a buried layer provided on the channel layer, a first recess formed in the buried layer in an E-mode region, a second recess formed in the first recess in the E-mode region and another second recess formed in the buried layer in a D-mode region, and a gate electrode provided in the second recess in the E-mode region and another gate electrode provided in the second recess in the D-mode region, and a distance between a surface of the buried layer and a bottom of the second recess in the E-mode region is shorter than another distance between another surface of the buried layer and a bottom of said another second recess in the D-mode region.