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:
Mar. 27, 2012
Filed:
Jul. 29, 2008
Johannes A. J. Van Geloven, Eindhoven, NL;
Pim T. Tuyls, Mol, BE;
Robertus A. M. Wolters, Eindhoven, NL;
Nynke Verhaegh, Arnhem, NL;
Johannes A. J. Van Geloven, Eindhoven, NL;
Pim T. Tuyls, Mol, BE;
Robertus A. M. Wolters, Eindhoven, NL;
Nynke Verhaegh, Arnhem, NL;
NXP B.V., Eindhoven, NL;
Abstract
The invention relates to a tamper-resistant semiconductor device comprising a substrate () comprising an electronic circuit arranged on a first side thereof. An electrically-conductive protection layer () is arranged on a second side of the substrate () opposite to the first side. At least three through-substrate electrically-conductive connections () extend from the first side of the substrate () into the substrate () and in electrical contact with the electrically-conductive protection layer () on the second side of the substrate (). A security circuit is arranged on the first side connected to the through-substrate electrically-conductive connections () and is arranged for measuring at least two resistance values (R, R, R, R, R, R) of the electrically-conductive protection layer () through the through-substrate electrically-conductive connections (). The security circuit is further arranged for comparing the measured resistance values (R, R, R, R, R, R) with reference resistance values.