Patent ID: 6906542

Claim:
A prober for measuring electrical characteristics of a test target object, the prober comprising: a stage which places a test target object thereon, the test target object having a plurality of electrical circuit devices on a surface thereof, each of the electrical circuit devices having a plurality of electrodes on a surface thereof; a probe card which is arranged above the stage, the probe card comprising a plurality of probes; a first sensor which detects positions of distal ends of the probes; a second sensor which detects a surface position of an individual one of the electrical circuit devices; and a controller which brings the probes of the probe card and the electrodes of the electrical circuit devices into contact with each other on the basis of the positions of the distal ends of the probes detected by the first sensor and the surface position of each of the electrical circuit devices detected by the second sensor, the controller sequentially performing the contact for each of the plurality of electrical circuit devices.