Method and device for protecting an integrated circuit against backside attacks
US9117833B2 · kind B2 · utility
6Cited by
9References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 23, 2013 |
| Grant date | Aug 25, 2015 |
| Priority date | — |
| Expiry date | May 23, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/15311
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for detecting an attack, such as by laser, on an electronic microcircuit from a backside of a substrate includes forming the microcircuit on the semiconductor substrate, the microcircuit comprising a circuit to be protected against attacks, forming photodiodes between components of the circuit to be protected, forming a circuit for comparing a signal supplied by each photodiode with a threshold value, and forming a circuit for activating a detection signal when a signal at output of one of the photodiodes crosses the threshold value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.