Patent ID: 8149006

Claim:
A probe card that electrically connects a semiconductor wafer as a test object and a circuit structure for generating a signal for a test, the probe card comprising: a plurality of probes that are made of a conductive material and come into contact with the semiconductor wafer to receive or output an electric signal; a probe head that houses and holds the probes; a substrate that has a wiring pattern corresponding to the circuit structure; a reinforcing member that is mounted on the substrate and reinforces the substrate; an interposer that includes a housing and is stacked on the substrate for connection of wires of the substrate, the housing having a plurality of connection terminals made of a conductive material and resilient in an axial direction of the connection terminals and a plurality of hole portions made of an insulative material each housing one of the connection terminals; and a space transformer that is interposed and stacked between the interposer and the probe head and transforms intervals among the wires to be connected through the interposer, the wires coming out on a surface of the space transformer facing the probe head.