Patent ID: 6659850
Filing Date: 2003-12-09
Classification: B24B

Abstract:
A carrier for planarizing a first surface of a work piece comprising:a carrier housing; a carrier insert coupled to the work piece carrier housing, the carrier insert comprising: a work piece bladder having a work piece diaphragm with a surface configured to press against a second surface of a work piece and having a plurality of ribs integrally formed with the work piece diaphragm; an optically transparent carrier backing plate adapted for coupling to the carrier housing; and a plurality of clamps for scaling the ribs to the carrier backing plate; a plurality of web plenums bounded by the work piece diaphragm, ribs, and carrier backing plate and in each of which the pressure can be controlled; and a plurality of carrier plenums bounded by the ribs and the carrier backing plate and in each of which the pressure can be controlled to control pressure exerted on a corresponding one of the plurality of ribs; and a floating wear ring coupled to the carrier housing and surrounding and closely spaced apart from the work piece bladder.