Patent ID: 6066266
Filing Date: 2000-05-23
Classification: B24B,H01L

Abstract:
A process for compensating for degradation of a first polishing pad during polishing on said first polishing pad of a plurality of substrate surfaces that have substantially similar film stacks, said process comprising:characterizing a test polishing pad, said characterization includes determining changes in film removal rates of layers of said film stack during polishing of said plurality of said substrate surfaces on said test polishing pad;polishing a first substrate surface on said first polishing pad under a first set of polishing conditions, said first and said test polishing pads are substantially similar; andpolishing a second substrate surface on said first polishing pad under a second set of polishing conditions, wherein difference between said second set of polishing conditions and said first set of polishing conditions is designed to minimize said changes in said film removal rates of said layers of said film stack and thereby compensate for degradation of said first polishing pad.