Patent ID: 7629803
Filing Date: 2009-12-08
Classification: G01R

Abstract:
1. A probe card assembly, comprising a main body, a probe base provided at a center of the main body, and a plurality of test probes connecting the main body and the probe base, wherein each of the test probes has a tip extending out from the probe base for contacting a wafer to be tested, and the test probes comprise at least one power probe, at least one grounding probe and a plurality of signal probes, in which each of the test probes has a middle section between the main body and the probe base and contains therein a core that is wrapped by an insulation layer, the probe card assembly being characterized in that: at least one of the test probes other than the grounding probe has an outer surface of the middle section thereof wound by at least one conductive wire whose two ends are connected to a grounding end of the main body of the probe card assembly, wherein a length L