Electrostatic discharge protection device for a high density printed circuit board
US6493198B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 22, 2000 |
| Grant date | Dec 10, 2002 |
| Priority date | — |
| Expiry date | Feb 22, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2201/09472
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electrostatic discharge protection device for a high-density printed circuit board consists of a layered structure starting at the bottom layer with a ground conductor. A dielectric layer covers the ground conductor to electrically isolate it from a circuit trace that is on top of the dielectric layer. A via is formed in the dielectric layer such that a portion of the ground conductor is exposed, and the via is strategically located such that the edge of the via is tangent to an edge portion of the circuit trace. The via forms a spark gap between the edge portion of the circuit trace and the underlying ground conductor, using air as the dielectric medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.