Patent ID: 7372286
Filing Date: 2008-05-13
Classification: G01R

Abstract:
1. A modular probe card comprising: a printed circuit board having a plurality of first contact pads; a probe head having a plurality of probes and a plurality of second contact pads; an interposer disposed between the printed circuit board and the probe head, the interposer includes a substrate and a plurality of pogo pins, wherein the substrate has a first surface, a second surface, and a plurality of through holes penetrating from the first surface to the second surface, the pogo pins are secured in the through holes, each pogo pin has a first contact point, a second contact point, and a spring therebetween, whereby the first contact points are elastically extruded from the first surface to electrically contact the first contact pad, and the second contact points are elastically extruded from the second surface to electrically contact the second contact pad; and a metal plate disposed on the printed circuit board for assembling the probe head, the interposer, and the printed circuit board together with a plurality of joint elements, the printed circuit board has a plurality of through holes, the plurality of joint elements pass through the plurality of through holes in the printed circuit board and connect to the metal plate.