Patent ID: 6337281
Filing Date: 2002-01-08
Classification: B24B,B24D,B29C,B29L,G11B,H01L

Abstract:
A polishing pad providing abrasive particles at a polishing interface between a polishing pad surface on the polishing pad and an article to be polished, the polishing pad comprising:a three dimensional, fixed, abrasive polishing layer having a continuous phase provided by a matrix material, and a discontinuous phase provided by multiple abrasive particles for which the average particle size thereof multiplied by the valley abrasion number thereof is less than 300; the polishing layer providing the polishing pad surface with a textured structure having multiple protrusions and recesses between the protrusions; the abrasive particles being provided as nanoasperities protruding at the textured structure for polishing at the polishing interface; the protruding nanoasperities being releasable from the textured structure to the polishing interface during polishing; and upon release of the releasable nanoasperities from the polishing pad surface, further nanoasperities protruding at the textured structure for polishing at the polishing interface.