Defense against counterfeiting using antifuses
US9685958B2 · kind B2 · utility
6Cited by
1References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2014 |
| Grant date | Jun 20, 2017 |
| Priority date | — |
| Expiry date | Nov 14, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/19107
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
A locking system for an integrated circuit (IC) chip can include an arrangement of one or more antifuse devices in a signal path of the IC chip. The antifuse devices can be configured to operate in a first state, corresponding to a normally open switch, to inhibit normal operation of the IC chip, and to transition from the first state to a permanent second state, corresponding to a closed switch, in response to a program signal applied to at least one terminal of the IC chip to enable the normal operation of the IC chip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.