Patent ID: 8456184

Claim:
A probe card that electrically connects a semiconductor wafer as a test object and a circuit structure that generates a signal for a test, the probe card comprising: a plurality of probes that is made of a conductive material and comes 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 includes wires electrically connected to the circuit structure; a space transformer that transforms intervals between the wires of the substrate and causes the wires to come out to a surface of the space transformer on a side opposing the probe head; and a holding unit that is in direct contact with each of the probe head and the space transformer to directly press a portion near an edge portion of each of the probe head and the space transformer in a direction vertical to the substrate, wherein the probe head is closely stacked on the space transformer without a gap, and a point of application of force applied from the holding unit to the probe head is positioned inside of an outer edge of the probe head and/or a point of application of force applied from the holding unit to the space transformer is positioned inside of an outer edge of the space transformer so as to suppress warp of the probe head and the space transformer.