Physical unclonable function generator and manufacturing method thereof
US12412848B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 27, 2022 |
| Grant date | Sep 9, 2025 |
| Priority date | — |
| Expiry date | Feb 22, 2044 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A physical unclonable function (PUF) generator including a substrate and semiconductor units is provided. Each of the semiconductor units includes an isolation structure, a first conductive line, and a second conductive line. The isolation structure is located in the substrate. The isolation structure has a first protrusion portion and a recess. The first protrusion portion and the recess are adjacent to each other. The first conductive line is located above the first protrusion portion and the recess. The second conductive line is located above the first conductive line. At least one short circuit randomly exists between at least one of the first conductive lines and at least one of the second conductive lines in at least one of the semiconductor units.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.