Patent ID: 6537143
Filing Date: 2003-03-25
Classification: B24B

Abstract:
A pedestal of a load-cup for supporting a wafer as it is loaded/unloaded onto/from a chemical mechanical polishing (CMP) apparatus, the pedestal comprising:a pedestal plate dedicated to support a wafer; a pedestal support column extending from the bottom of and supporting said pedestal plate; and a pedestal film fixed to the upper surface of said pedestal plate; said pedestal support column having a vertical passageway extending therein, said pedestal plate having a central portion, a plurality of radial arms extending radially outwardly from said central portion, plurality of fluid ports extending through said upper surface, and an internal passageway extending therein and connecting said fluid ports to the vertical passageway in said pedestal support column, and said pedestal film extending around said fluid ports.