Patent ID: 6439967
Filing Date: 2002-08-27
Classification: B24B,B24D

Abstract:
In the fabrication of microelectric substrates, a method of planarizing a microelectric substrate, comprising:extending a planarizing surface of a flexible and unitary planarizing medium across a fluid based formed in a fluid container to define an enclosed fluid chamber; filling the fluid chamber with a support fluid; retaining the medium on the container by clamping a circumferential perimeter portion of the member between a rim extending from a sidewall of the container and a retaining member; contacting the substrate with the planarizing surface and moving the substrate with respect to the planarizing surface; and removing material from a surface of the substrate by flexing portions of the planarizing medium under the substrate as the substrate moves across the planarizing medium to continuously conform a local flex zone on the medium to a global curvature across the substrate and provide at least a substantially uniform pressure distribution across the substrate.