Patent ID: 7354332

Claim:
A method for qualifying a semiconductor manufacturing tool comprising a bulk removal polishing platen, a copper clearing platen and a barrier removal polishing platen, said method comprising: (a) transferring a wafer to said bulk removal polishing platen; (b) measuring, in situ, bulk removal polishing platen qualification characteristics from said wafer during processing by said bulk removal polishing platen; (c) qualifying said bulk removal polishing platen by adjusting one or more parameters of a process recipe in accordance with said one or more bulk removal polishing platen qualification characteristics measured from said wafer to target one or more bulk removal polishing platen specifications; (d) transferring a wafer to said copper clearing platen; (e) measuring, in situ, copper clearing platen qualification characteristics from said wafer during processing by said copper clearing platen; (f) qualifying said copper clearing platen by adjusting one or more parameters of said recipe revised in (c) in accordance with said one or more copper clearing platen qualification characteristics measured from said wafer to target one or more copper clearing platen specifications; (g) transferring a wafer to said barrier removal polishing platen; (h) measuring, in situ, barrier removal polishing platen qualification characteristics from said wafer during processing by said barrier removal polishing platen; (i) qualifying said barrier removal polishing platen by adjusting one or more parameters of said recipe revised in (f) in accordance with said one or more barrier removal polishing platen qualification characteristics to target one or more barrier removal polishing platen specifications; (j) using said recipe revised in (i) in the processing of one or more subsequent wafers by each of said bulk removal polishing platen, said copper clearing platen, and said barrier removal polishing platen; (k) measuring, in situ, a defectivity from said wafer; and (l) qualifying said tool for defectivity by adjusting one or more parameters of said recipe in accordance with said defectivity to target a defectivity specification.