Patent ID: 6921455

Claim:
A polishing machine for a peripheral edge of a semiconductor wafer, said machine comprising: a rotary mechanism for holding a semiconductor wafer while rotating it in a prescribed direction; a rotary body which rotates relative to the semiconductor wafer while maintaining a prescribed gap from a periphery of said semiconductor wafer, having a rotary axis which is set in the same direction as the rotary axis of said semiconductor wafer, so that the rotary body and the semiconductor wafer are not in contact with each other during a complete polishing process; a polishing solution channel for channeling the flow of polishing solution to said gap; and a polishing solution supply portion for supplying the polishing solution to said polishing solution channel; wherein said polishing solution is drawn into said gap between the peripheral edge of said semiconductor wafer and said rotary body, and polishing abrasive particles in said polishing solution collide with the peripheral edge of said semiconductor wafer to conduct non-contact polishing of the peripheral edge of said semiconductor wafer.