Patent ID: 7474109

Claim:
A contact terminal for transmitting a signal between a desired probe pin among a plurality of probe pins arranged in parallel at a predetermined distance in a predetermined arrangement direction on the primary surface of a probe substrate and an external measurement apparatus, comprising: a signal terminal having a width smaller than a distance between probe pins provided on both sides of one probe pin in the arrangement direction, the signal terminal having a first conductor width enough to be in electrical contact with the one probe pin and not enough to be in electrical contact with the probe pins adjacent to the one probe pin; two ground terminals to which a ground potential is applied, which are provided on both sides of the signal terminal in the arrangement direction and which have each width larger than that of the signal terminal in the arrangement direction, each of the two ground terminals having a second conductor width or a plane conductor enough to be in electrical contact with the probe pins adjacent to the one probe pin; and a signal line electrically connecting the signal terminal to the external measurement apparatus, wherein the surface of each of the signal terminal and the two ground terminals contacting with the probe pins has a non-zero degree angle with the primary surface of the probe substrate.