Patent ID: 6414501
Filing Date: 2002-07-02
Classification: G01R

Abstract:
A probe card for measuring electrical characteristics of a device by electrically coupling probes to pads of said device, said probe card comprising:an electrically insulated substrate fixed on a circuit board; a plurality of probes fixed on said electrically insulated substrate, each having a base, an elastic cantilever, and a pointed end, such that said insulated substrate restricts an elastic micro movement of said elastic micro cantilever; electrical wiring pattern formed on said probes and said insulated substrate; and an electrically conducting layer plated on said electrical wiring pattern, wherein said base, said elastic micro cantilever, and said pointed end of each of said probes are integrally made of single crystal silicon and manufactured by a pattern-defining photolithography that etches away the material except a pattern-defined portion.