Patent ID: 6887136

Claim:
A method of chemical mechanical polishing, comprising: contacting a substrate with a generally linear fixed-abrasive polishing sheet releasably secured to a first platen, the polishing sheet having a width greater than a diameter of the substrate; supplying a first polishing liquid to the polishing sheet, wherein the first polishing liquid includes at least one chemically-reactive agent; creating relative motion between the substrate and the polishing sheet to polish the substrate; incrementally advancing the polishing sheet in a linear direction across the top surface of the first platen after polishing at the first platen; contacting the substrate with a generally circular fixed-abrasive polishing pad secured to a second platen; supplying a second polishing liquid to the polishing pad, wherein the second polishing liquid includes at least one chemically-reactive agent; and rotating the second platen to create relative motion between the substrate and the polishing pad to polish the substrate.