Patent ID: 8592313
Filing Date: 2013-11-26
Classification: B24B

Abstract:
1. A polishing method for polishing workpieces, the polishing method comprising: performing a first polishing process on a first workpiece first taken out of a cassette in which a plurality of workpieces are stored, the first polishing process comprising (i) measuring a surface of the first workpiece before polishing, (ii) polishing the surface of the first workpiece multiple times under preset conditions, and measuring the surface of the first workpiece between each polishing, and (iii) measuring the surface of the first workpiece after polishing the surface of the first workpiece multiple times; and performing a second polishing process on a second or later workpiece later taken out of a cassette, the second polishing process comprising (iv) measuring a surface of the second or later workpiece before polishing, (v) polishing the surface of the second or later workpiece multiple times successively under polishing conditions without measuring the surface of the second or later workpiece between each polishing, and (vi) measuring the surface of the second or later workpiece after polishing, wherein the polishing conditions for at least one polishing of the multiple polishings of the surface of the second workpiece are modified based on the results of the measuring in (i), (ii) and (iii) of the performing a first polishing process on the first workpiece, and the polishing conditions for at least one polishing of multiple polishings of a surface of a third workpiece are modified based on the results of the measuring in (iv) and (vi) of the performing a second polishing process on the second workpiece.