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. 10, 2015
Filed:
Jul. 31, 2013
Applicant:
Stmicroelectronics (Tours) Sas, Tours, FR;
Inventors:
Olivier Ory, Tours, FR;
Eric Laconde, Tours, FR;
Assignee:
STMicroelectronics (Tours) SAS, Tours, FR;
Primary Examiner:
Int. Cl.
CPC ...
H02H 9/00 (2006.01); H01L 23/62 (2006.01); H01L 27/02 (2006.01);
U.S. Cl.
CPC ...
H01L 23/62 (2013.01); H01L 27/0255 (2013.01); H01L 2924/0002 (2013.01);
Abstract
A device for protecting an integrated circuit against overvoltages, the device being formed inside and on top of a semiconductor substrate of a first conductivity type and including: a capacitor including a well of the second conductivity type penetrating into the substrate and trenches with insulated walls formed in the well and filled with a conductive material; and a zener diode formed by the junction between the substrate and the well.