Patent ID: 8222574
Filing Date: 2012-07-17
Classification: H01L

Abstract:
1. A chamber for processing a substrate, comprising: a chamber enclosure defining a processing volume; a substrate support disposed in the processing volume; an edge ring disposed on the substrate support, the edge ring to support the substrate on a periphery of the substrate during processing; a first heat source including an array of heating elements and a reflector to heat the substrate; a second heat source dedicated to change the temperature of the edge ring; an edge ring thermal probe and wafer thermal probes, the first heat source, the second heat source and the edge ring thermal probe and wafer thermal probes connected to a controller to heat and cool the edge ring independently of the substrate and to minimize the difference in temperature between the edge ring and the wafer; and a thermal mass positioned adjacent the edge ring including at least one channel containing a fluid that heats or cool the thermal mass, the edge ring and the thermal mass being movable with respect to each to cool and heat the edge ring to decrease a temperature difference between the edge ring and the thermal mass.