Patent ID: 7901509

Claim:
An apparatus for supporting a substrate in a process chamber and regulating the surface temperature of the substrate, the apparatus comprising: a base support having a surface adapted to support the substrate; a heating element for heating the substrate to a temperature of at least 300° C.; at least one layer of thermal pyrolytic graphite material embedded in the base support, the thermal pyrolytic graphite (TPG) layer having a thermal conductivity of at least 1000 W/m° C. in a plane parallel to the substrate being supported; wherein the surface of the base support has a maximum temperature variation of 10° C. between a lowest point and a highest temperature point on the surface of the base support; and further wherein, the base support for supporting the wafer comprises a base substrate comprising at least one of copper, aluminum, and alloys thereof; the at least a layer of thermal pyrolytic graphite is embedded in the metal base substrate; the heating element for heating the substrate to a temperature of at least 300° C. is embedded in the metal base substrate, under the thermal pyrolytic graphite layer and away from the wafer substrate.