Laser detection device with a detection cell and detection circuit and methods of formation thereof
US10345142B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2017 |
| Grant date | Jul 9, 2019 |
| Priority date | — |
| Expiry date | Sep 8, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2001/4238
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A laser detection device can be used to protect an integrated circuit. The device includes a detection cell having a buried channel of a first conductivity type extending in a substrate of the integrated circuit. The substrate is of a second conductivity type. The detection cell also has a first electrical connection coupling a first point in the buried channel to a supply voltage rail, and a second electrical connection coupled to a second point in the buried channel. A detection circuit is coupled to the second point in the buried channel via the second electrical connection and adapted to detect a fall in the voltage at the second point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.