Patent ID: 6217412
Filing Date: 2001-04-17
Classification: B24B,H01L

Abstract:
A method, comprising:polishing a first sit of production wafers using a fist polishing pad and an initial set of polishing parameters;replacing the first polishing pad with a second polishing pad;polishing a second set of production wafers using the second polishing pad and at least some of the initial set of polishing parameters used with said first polishing pad;obtaining data including a rate of removal of a of a process layer from said second set of production wafers based upon said polishing said second set of production wafers using the second polishing pad; anddetermining if said rate of removal of said process layer from said second set of production wafers using the second polishing pad is acceptable based upon said data obtained from the second set of production wafers polished using the second polishing pad.