Patent ID: 6262586
Filing Date: 2001-07-17
Classification: G01R

Abstract:
A probing method utilizing an optimal probing mode, comprising the steps of:moving successively a probe card having a plurality of probes constituting a set of measuring channels used to obtain electrical signals from a plurality of chips formed on a semiconductor wafer, in which each of the plurality of probes is necessarily in contact with a chip, and wherein each of the plurality of probes of each measuring channels is in contact with a different chip on said semiconductor wafer; andinspecting the plurality of chips formed on said semiconductor wafer, to which said probe card is successively moved, wherein each of said plurality of probes is in contact with a chip on said semiconductor wafer during the inspection,wherein each of said plurality of chips is inspected only once, and with respect to a first chip that has been contacted only once, the first chip is inspected during the one contact, and with respect to a second chip that has been contacted multiple times, the second chip is inspected during only one of the multiple contacts.