Patent ID: 6913520

Claim:
An all-in-one polishing process for a semiconductor wafer, the semiconductor wafer being positioned on a polishing platen of a chemical mechanical polishing (CMP) device and comprising a top surface, a bottom surface and an edge bevel surface, the edge bevel surface comprising a front side bevel, a backside bevel and an edge, the top surface comprising at least a first material layer, the edge bevel surface comprising a second material layer, the polishing process comprising: performing a surface CMP process by utilizing a polishing pad to remove the fist material layer on the top surface to a first thickness; performing a first cleaning process to clean the top surface of the semiconductor wafer; performing a buffing polishing process by utilizing a buffing pad; performing a rim CMP process to completely remove the second material layer on the front side bevel, the backside bevel and the edge; performing a second cleaning process to clean the top surface, the front side bevel, the backside bevel, the edge, and the surface of the semiconductor wafer; and drying the semiconductor wafer.