Patent ID: 8149008

Claim:
A probe card that electrically connects, using a plurality of probes, a semiconductor wafer and a circuit structure for generating a signal to be output to the semiconductor wafer, each probe is made of a conductive material and is extensible and compressible by elastic force along a longitudinal direction thereof, the probe card comprising: a probe head that holds the plurality of probes; a wiring board that has a wiring pattern corresponding to the circuit structure; a flat interposer that is stacked on the wiring board and relays wirings of the wiring board; a flat space transformer that is placed between the interposer and the probe head, transforms a space between the wirings relayed by the interposer, and leads the transformed wirings out to a surface facing the probe head; a plurality of post members that are formed in a substantially columnar shape with a height larger than a sum of a thickness of the wiring board and a thickness of the interposer, and embedded to pierce through the wiring board and the interposer in a thickness direction such that one of end surfaces of each post member comes into contact with the space transformer, wherein the interposer comprises a plurality of connection terminals, each of which is made of a conductive material and is extensible and compressible by elastic force along a longitudinal direction thereof; and a housing member that is made of a flat insulating material and includes a plurality of through holes to individually house the connection terminals, and both ends of each of the connection terminals in the longitudinal direction are exposed from the housing member.