Device for protecting an integrated circuit against overvoltages
US8953290B2 · kind B2 · utility
2Cited by
3References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2013 |
| Grant date | Feb 10, 2015 |
| Priority date | — |
| Expiry date | Jul 31, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/0002
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
A device for protecting an integrated circuit against overvoltages, the device being formed inside and on top of a semiconductor substrate of a first conductivity type and including: a capacitor including a well of the second conductivity type penetrating into the substrate and trenches with insulated walls formed in the well and filled with a conductive material; and a zener diode formed by the junction between the substrate and the well.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.