Patent ID: 8075729
Filing Date: 2011-12-13
Classification: H01L,Y10T

Abstract:
1. A substrate pedestal assembly comprising: an electrostatic chuck having at least one chucking electrode; and a metallic base coupled to the electrostatic chuck and having at least two isolated fluid conduit loops disposed therein; wherein the at least two isolated fluid conduit loops comprise an outer loop and an inner loop, wherein at least one of the inner loop or the outer loop is doubled back between an adjacent inlet and an outlet, and wherein an angular orientation of the inlet and outlet relative to a centerline of the base is offset; wherein doubled back comprises a first conduit portion extending from the inlet to a second conduit portion, the second conduit portion following the path of the first conduit portion back to the outlet in a side-by-side orientation such that flow in the second conduit portion flows counter to the flow in the first portion to the outlet.