Patent ID: 7160432
Filing Date: 2007-01-09
Classification: B23H,B24B,C09G,C25F,H01L

Abstract:
1. A method of processing a substrate having a layer of conductive material layer disposed thereon over narrow feature definitions and wide feature definitions, comprising: removing the conductive material disposed over narrow feature definitions at a higher removal rate than conductive material disposed over wide feature definitions by an electrochemical mechanical polishing technique to form a protrusion of the conductive material deposited over the wide feature definitions, wherein the protrusion of conductive material over the wide feature definitions comprises between about 1% and about 50% of the thickness of the deposited conductive material; and then removing the conductive material disposed over wide feature definitions at a removal rate greater than or equal to the removal rate of conductive material disposed over narrow feature definitions by at least a chemical mechanical polishing technique.