Patent ID: 7572172

Claim:
A manufacturing method of a semiconductor device which includes a polishing step of supplying slurry on an abrasive pad attached on a rotating platen, presses a semiconductor wafer held on bottom of a head against the abrasive pad, and polishes the semiconductor wafer, comprising: spraying a cleaning fluid on an outer surface of the head and an exposed surface adjacent to an outside of the head on the abrasive pad, with a spray angle made between a spray direction of the cleaning fluid and the abrasive pad surface as a first spray angle, when a polished surface of the semiconductor wafer is contacted with a surface of the abrasive pad after finishing the polishing step; next, spraying the cleaning fluid into an interstice between the polished surface and the abrasive pad surface formed early in a step of raising the head, at a second spray angle equal to or smaller than the first spray angle; and next, spraying the cleaning fluid by following the polished surface with rise of the head.