Patent ID: 6390891
Filing Date: 2002-05-21
Classification: B24B,Y10S

Abstract:
A method of chemical mechanical polishing a surface of a workpiece using a polishing pad, the method comprising:providing a groove pattern on a surface of the polishing pad, the polishing pad having a single continuous layer, wherein the groove pattern has a plurality of bends with a turn radius greater than ninety degrees and wherein the grooves of the groove pattern do not penetrate completely through the polishing pad; mounting the polishing pad on a subpad; causing the surface of the workpiece and the grooved surface of the polishing pad to be in contact; providing slurry to an interface at which the surface of the workpiece and the polishing pad come into contact, wherein the slurry is provided through holes in the polishing pad and subpad; and imparting a relative motion between the substrate and polishing pad to polish the surface of the workpiece, wherein the slurry is distributed across the interface through the groove pattern.