Patent ID: 7175510
Filing Date: 2007-02-13
Classification: B24B

Abstract:
1. A method, comprising: polishing a surface of a semiconductor wafer by moving a polishing surface of the polishing pad over a surface of the semiconductor wafer; and conditioning the polishing pad by rotating a conditioning disk at a rate between about 100 rpm and about 750 rpm with a plurality of diamonds embedded within a surface of the disk so that the diamonds scrape over the polishing surface; wherein the diamonds comprise a geometry having at least two vertices, wherein each vertices is formed by two edges of the diamond that meet to form an angle of about 90 degrees; wherein the diamonds are embedded within a base of the conditioning disk; wherein the conditioning disk has a diameter between about 0.5 and about 1.5 inches; wherein the plurality of diamonds comprises between about 150 and about 900 diamonds; wherein each of the diamonds of the plurality of diamonds have at least two vertices having angle of about 90 degrees protruding from the base, each by an approximately equal amount; and