Patent ID: 8974270
Filing Date: 2015-03-10
Classification: B24B,B24D,H01L,Y10T

Abstract:
1. A CMP pad dresser, comprising: a first monolayer of superabrasive particles disposed on and protruding from one side of a metal support layer, wherein the difference in protrusion distance between the highest protruding tip and the second highest protruding tip of the monolayer of superabrasive particles is less than or equal to about 50 microns; a second monolayer of superabrasive particles disposed on the metal support layer on an opposite side from the first monolayer, wherein the superabrasive particles of the second monolayer are positioned to have substantially the same distribution as the superabrasive particles of the first monolayer; and a rigid support coupled to the second monolayer of superabrasive particles opposite the first monolayer.