Patent ID: 7004820

Claim:
A method for chemical mechanical polishing (CMP), comprising: providing a CMP device comprising a base having a central region and a peripheral region, wherein a platen is disposed in the central region, a polishing pad is disposed on the platen, and at least one nozzle is set on the peripheral region; the CMP device further comprising a supplier set above the polishing pad, wherein the supplier has at least an orifice to spray DI water onto the polishing pad; performing a polishing process, wherein a wafer carrier holds a wafer to allow the wafer to contact the polishing pad; and following that, performing a rinsing process, the supplier spraying DI water through the orifice to the polishing pad, and the nozzle spraying DI water to the orifice of the supplier simultaneously, so as to prevent the orifice from being clogged.