Probe card
US7804315B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 5, 2009 |
| Grant date | Sep 28, 2010 |
| Priority date | — |
| Expiry date | Jun 5, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R1/06772
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A probe card is disclosed, which has a conductive layer additionally provided on an insulating seat of a probe stand and the conductive layer is electrically connected to a ground circuit on the probe card via a conductive pin being fed through the insulating seat. A conductive wire is wound surrounding the intermediate segment of the probe, one end of the conductive wire is electrically connected to the ground circuit of the circuit board, and the other end of the conductive wire is electrically connected to the conductive layer of the probe stand. Thus, due to that an additional ground portion of the conductive layer is provided on the conductive wire wound surrounding the probe, a loop inductance of the probe in the insulating seat can be reduced such that accuracy of test data of the probe can be enhanced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.