Patent ID: 7068057
Filing Date: 2006-06-27
Classification: G01R

Abstract:
1. A probe card for probing a test device comprising: (a) a laminate board including a top dielectric layer, a bottom dielectric layer and a set of auxiliary guard traces interposed between said top dielectric layer and said bottom dielectric layer, said board forming an opening and having a top major surface and bottom major surface; (b) a plurality of probing devices for probing a plurality of probing sites on a test device, each probing device including an elongate probing needle and an electrical connection point electrically connected to said probing needle, said probing devices being mounted to said top major surface in radial arrangement about said opening and extending below said opening, so that said probing needles terminate in a pattern suitable for probing said sites; (c) a plurality of pogo pin receptive pad sets; (d) a set of first conductors for electrically connecting each pad set to a said auxiliary guard trace; and (e) a second conductor for electrically connecting a said electrical connection point to said pad set.