Patent ID: 6887132
Filing Date: 2005-05-03
Classification: B24B

Abstract:
1. A polishing apparatus for removing material from a surface of a substrate, the polishing apparatus comprising: a platen having a polishing surface thereon; a polishing head adapted to hold the substrate against the polishing surface during a polishing operation; a drive mechanism to rotate the platen providing a relative motion between the polishing head and the polishing surface during the polishing operation; a dispenser having a plurality of nozzles adapted to dispense chemical on the polishing surface; and a distributor positioned between the plurality of nozzles of the dispenser and the polishing head, whereby the distributor mixes and uniformly distributes chemical between the surface of the substrate and the polishing surface during the polishing operation when there is relative motion between the polishing head and the polishing surface during the polishing operation.