Patent ID: 6267649
Filing Date: 2001-07-31
Classification: B24B

Abstract:
A method for removing deposits from the periphery of a substrate, comprising:(a) providing a substrate, said substrate having been processed and containing layers of dielectric and layers of metal deposited over the active surface of said substrate;(b) inserting said substrate into an arrangement of bevel/edge polishing heads, said bevel/edge polishing head comprising a polishing pad holder, said polishing pad holder having a cavity wherein are contained a bevel polishing pad and an edge polishing pad and a polishing pad support body, said bevel polishing pad and said edge polishing pad and said polishing pad support body being mounted inside said polishing pad holder in such a manner that:(i) said bevel polishing pad is in physical contact with the active surface of said substrate, said physical contact extending into a perimeter of said substrate over a measurable amount;(ii) said edge polishing pad is in physical contact with an edge of said substrate;(iii) said pad support body is in physical contact with the bottom surface of said substrate in such a manner as to provide support to said substrate; and(iv) the distance between said bevel polishing pad and said pad support body when measured in a direction that is perpendicular to the plane of said substrate is essentially equal to a thickness of said substrate; and(c) removing excess deposits from a periphery of said substrate.