Patent ID: 6330352
Filing Date: 2001-12-11
Classification: G01N,H01L

Abstract:
An inspection system comprising:a first inspection machine to inspect defects on a work piece;a second inspection machine to inspect electric characteristics of chips of the work piece; andan analysis unit to process inspection results to be inspected by the first and second inspection machine and to output processing results;wherein said analysis unit has a data processing unit to judge which chips are chips with defects by using the inspection results of the first inspection machine, and to calculate a rate of good chips with defects or bad chips with defects by using the inspection results of the second inspection machine, and to correlate the rate of good chips with defects and bad chips with defects to each of a plurality of processes and to output the calculation result indicating the yield of good chips with defects relative to bad chips with defects for each of the plurality of processes, wherein said first inspection machine is a visual inspection machine or a particle inspection machine.