Patent ID: 8092602
Filing Date: 2012-01-10
Classification: H01L,Y10T

Abstract:
1. A thermally zoned substrate holder for a processing system, comprising: a substrate holder having a top surface configured to support a substrate and a bottom surface opposing said top surface, wherein said substrate holder comprises two or more concentric thermal zones; a first concentric array of temperature control elements disposed within said substrate holder and located beneath said top surface such that each temperature control element of said first concentric array is positioned within one of said two or more concentric thermal zones and each of said two or more concentric thermal zones includes at least one temperature control element of the first concentric array, wherein each temperature control element of the first concentric array comprises a channel which extends circumferentially about a center of the top surface and which is configured to circulate a temperature control fluid; a second concentric array of temperature control elements disposed within said substrate holder beneath said top surface and above said first concentric array of temperature control elements such that each temperature control element of said second concentric array is positioned within one of said two or more concentric thermal zones and and each of said two or more concentric thermal zones includes at least one temperature control element of the second concentric array, wherein each temperature control element of the second concentric array comprises either a resistive heating element or a thermoelectric cooling element, or both a resistive heating element and a thermoelectric cooling element, and extends circumferentially about the center of said top surface; and at least one thermal insulator extending circumferentially about the center of said top surface and is interposed radially between adjacent concentric thermal zones, wherein said at least one thermal insulator comprises an annular plenum space extending in a direction from said top surface to said bottom surface of said substrate holder such that the thermal insulator is positioned between adjacent first temperature control elements and positioned between adjacent second temperature control elements, and wherein said annular plenum space is configured to receive a gas from a gas supply through one or more pressure control devices and to distribute said gas through a plurality of openings in said top surface to the backside of the substrate.