Patent ID: 7573284

Claim:
A system for testing integrated circuit devices after manufacture, said system comprising: a tester testing and retesting devices; a database comprising a listing of types of defects approved for retesting, wherein said types of defects approved for retesting are based upon previously acquired statistics that indicate which types of defects have retest passing rates, after initially failing testing, above a predetermined threshold; and a processor in communication with said tester and said database, wherein said processor performs the following: directs said tester to test a group of devices to produce a failing group of devices that failed said testing, said devices in said failing group being identified by type of defect; sorts said failing group into devices that have at least one of said types of defects approved for retesting and into devices that do not have said types of defects approved for retesting; and directs said tester to retest only said devices in said failing group that have at least one of said types of defects approved for retesting.