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:
Sep. 21, 2010
Filed:
Dec. 15, 2009
Applicant:
Akira Yamada, Nukata-gun, JP;
Inventor:
Akira Yamada, Nukata-gun, JP;
Assignee:
DENSO CORPORATION, Kariya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 21/00 (2006.01); H01L 21/84 (2006.01);
U.S. Cl.
CPC ...
Abstract
A semiconductor device includes: a semiconductor substrate having a first semiconductor layer, an insulation layer and a second semiconductor layer, which are stacked in this order; a LDMOS transistor disposed on the first semiconductor layer; and a region having a dielectric constant, which is lower than that of the first or second semiconductor layer. The region contacts the insulation layer, and the region is disposed between a source and a drain of the LDMOS transistor. The device has high withstand voltage in a direction perpendicular to the substrate.