Patent ID: 9322849
Filing Date: 2016-04-26
CPC Classification: G01R

Claim Text:
1. A method of cleaning needles of a probe card in a test system, the method comprising: mounting the probe card having a plurality of devices under test (DUTs) in a card mounting part, each DUT comprising needles; scanning the DUTs and the needles of each DUT using a camera positioned in the test system to provide a scan result; focusing a laser beam on at least one of the needles based on the scan result; and irradiating the laser beam on the at least one of the needles to clean the at least one of the needles, wherein the laser beam comprises a plurality of laser beams and the at least one needle comprises a plurality of needles and wherein focusing the laser beams comprises comparing the scan result with a stored image corresponding to a case where the laser beams are focused on the needles and moving the laser beams or the probe card to focus the laser beams on the needles based on the comparison of the scan result and the stored image.