Patent ID: 7883395
Filing Date: 2011-02-08
Classification: B24B,Y10T

Abstract:
1. A planarization method, comprising: providing a contact structure, said contact structure comprising an axle, said axle having an axis of rotation, said axle configured to rotate about said axis of rotation; a plurality of cantilever arms, each cantilever arm of said plurality of cantilever arms having a first end and a second opposing end, said first end connected to said axle, said each cantilever arm extending radially outward from said axle about perpendicular to said axis of rotation; and a plurality of electrically conductive spheres, wherein at least one electrically conductive sphere of said plurality of electrically conductive spheres is disposed on said second end of each cantilever arm of said plurality of cantilever arms; placing a substrate in contact with said plurality of electrically conductive spheres, wherein said substrate lies in a plane about perpendicular to said axis of rotation; applying an electric voltage to said axle, said electric voltage transferring to said substrate, wherein responsive to said transferring an electrochemical reaction occurs on said substrate; rotating said axle on said axis, wherein said plurality of electrically conductive spheres revolves about said axis, wherein at least one electrically conductive sphere of said plurality of electrically conductive spheres remains in electrical contact with said substrate during said rotating; and electrochemical-mechanically planarizing said substrate during said rotating.