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. 08, 2020
Filed:
Apr. 12, 2019
Applicant:
Stmicroelectronics (Rousset) Sas, Rousset, FR;
Inventors:
Clement Champeix, Aix-en-Provence, FR;
Nicolas Borrel, Martigues, FR;
Assignee:
STMICROELECTRONICS (ROUSSET) SAS, Rousset, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 25/00 (2006.01); H01L 23/00 (2006.01); H01L 25/065 (2006.01); H01L 23/48 (2006.01);
U.S. Cl.
CPC ...
H01L 23/576 (2013.01); H01L 23/481 (2013.01); H01L 25/0657 (2013.01); H01L 2225/06513 (2013.01); H01L 2225/06527 (2013.01); H01L 2225/06541 (2013.01); H01L 2225/06565 (2013.01);
Abstract
A method of protecting a first chip in a multi-chip stack includes determining an electrical characteristic of a conductive loop. The conductive loop extends over a top portion of the first chip. The conductive loop also extends through the first chip and within a top portion of a second chip. The top portion of the second chip is adjacent to a bottom portion of the first chip. The method further includes determining whether the electrical characteristic indicates that an attack is being made to determine contents or operation of the first chip.