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:
Oct. 25, 2011
Filed:
Feb. 12, 2008
Monica Micciche, Enna, IT;
Antonio Giuseppe Grimaldi, San Giovanni La Punta, IT;
Luigi Arcuri, Misterbianco, IT;
Monica Micciche, Enna, IT;
Antonio Giuseppe Grimaldi, San Giovanni La Punta, IT;
Luigi Arcuri, Misterbianco, IT;
STMicroelectronics S.R.L., Agrate Brianza (MI), IT;
Abstract
An electronic device includes a semiconductor substrate of a first conductivity type and a drain layer adjacent the semiconductor substrate and having a plurality of drains. The drain layer includes a first semiconductor layer of the first conductivity type adjacent the semiconductor substrate, and at least one second semiconductor layer of a second conductivity type adjacent the first semiconductor layer. Moreover, a plurality of first column regions of the first conductivity type extends through the at least one second semiconductor layer to contact the first semiconductor layer. A plurality of second column regions of the second conductivity type delimits the plurality of first column regions. Furthermore, a plurality of body regions of the second conductivity type are adjacent respective ones of the plurality of second column regions.