Patent ID: 7679386

Claim:
A probe card comprising: a base wiring layer having a contactor area, a noncotnactor area on a surface thereof and via holes and wherein the contactor area projects higher than the non-contactor area; a rewiring layer disposed on the surface of the base wiring layer, the rewiring layer having via holes and a contactor area higher than the non-contactor area utilizing the height of the projecting contactor area in the base wiring layer, and pitch of the via holes of the rewiring layer being smaller than pitch of the via holes of the base wiring layer; and a contactor disposed on the surface in the contactor area of the rewiring layer, the contactor formed on the surface of the rewiring layer at the contactor area to correspond to the via holes of the rewiring layer that are formed with the pitch that is smaller than the pitch of the via holes of the base wiring layer.