Patent ID: 7732332
Filing Date: 2010-06-08
Classification: B24B,G01N,H01L

Abstract:
1. A chemical mechanical polishing process, comprising: providing a wafer disposed at a wafer handling region of a chemical mechanical polishing apparatus; moving the wafer into a buffer region of the chemical mechanical polishing apparatus; performing a first detecting process for obtaining a pre-polishing condition of the wafer by using a detector in the buffer region, wherein after the first detecting process, performing a cleaning process when the pre-polishing condition shows that a surface of a polished-to-be material layer of the wafer is peeling so as to remove the peeling; moving the wafer into a chemical mechanical polishing region and performing a chemical mechanical process; and performing a second detecting process, in the buffer region, for obtaining a post-polishing condition of the wafer by using the detector of the buffer region.