Patent ID: 6138745
Filing Date: 2000-10-31
Classification: C23C,H01J,H01L,Y10T

Abstract:
A thermally conductive chuck for supporting a substrate within a vacuum processing chamber comprising:a chuck body having a mounting surface that supports the substrate for processing within a first pressure-regulatable space of the processing chamber;said mounting surface being positioned for forming together with the substrate a second pressure-regulatable space for assisting transfers of heat between said chuck body and the substrate;a clamp that presses the substrate against the mounting surface and that forms together with said chuck body and the substrate a third pressure-regulatable space that extends beyond a periphery of the substrate between the first and second pressure-regulatable spaces;the third pressure-regulatable space separating the second pressure-regulatable space from the first pressure-regulatable space;a first conduit that delivers fluid to the second pressure-regulatable space and a second conduit that evacuates fluid from the third pressure-regulatable space for reducing pressure in the third pressure-regulatable space with respect to the second pressure-regulatable space;said first conduit being one of a pair of concentric conduits for conveying fluid both to and from the second pressure-regulatable space; andsaid concentric conduits including inner and outer conduits each having first and second ends and further comprising an inlet manifold connected to said first end of one of said inner and outer conduits and an outlet manifold connected to said first end of the other of said inner and outer conduits.