ESD protection circuit for RFID tag
US8324658B2 · kind B2 · utility
16Cited by
5References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 14, 2010 |
| Grant date | Dec 4, 2012 |
| Priority date | — |
| Expiry date | Jan 27, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D62/126
Abstract
An electrostatic discharge (ESD) protection circuit structure includes a dual directional silicon controlled rectifier (SCR) formed in a substrate. The SCR includes first and second P-wells laterally interposed by an N-well. A deep N-well is disposed underneath the P-wells and the N-well. First and second N-type regions are disposed in the first and second P-wells, respectively, and are coupled to a pair of pads. First and second P-type regions are disposed in the first and second P-wells, respectively, are coupled to the pads, and are disposed closer to the N-well than the first and second N-type regions, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.