Patent ID: 6544373
Filing Date: 2003-04-08
Classification: B24B,Y10T

Abstract:
A method of fabricating a composite polishing pad, the method comprising:providing a first polishing pad which comprises a glue layer on a surface of the first polishing pad and a plurality of hard polishing materials positioned on the glue layer; removing portions of the first polishing pad to remove portions of the hard polishing material positioned on the surface of the first polishing pad so as to form a plurality of holes penetrating the first polishing pad; providing a second polishing pad which comprises a glue layer on a surface of the second polishing pad and a plurality of soft polishing materials adhering to the glue layer; removing portions of the soft polishing material positioned on the surface of the second polishing pad while retaining the glue layer, and the soft polishing material retained on the surface of the second polishing pad completely matching the holes formed in the first polishing pad; and sticking the first polishing pad on the surface of the second polishing pad so as to form a composite polishing pad; wherein the surface of the composite polishing pad comprises a pattern formed by the hard and soft polishing materials.