Patent ID: 6646235
Filing Date: 2003-11-11
Classification: H01L

Abstract:
A system comprising:a chamber configured to house a substrate for processing; a resistive heater comprising a stage disposed within the chamber including a surface having an area to support a substrate and a body, a first heating element disposed within a first portion of the surface area of the stage and within a first plane of the body of the stage and adapted to apply a variable heat energy to an area of the surface of the stage, and a second heating element disposed within a second portion of the surface area of the stage and in a second plane of the body of the stage; a power source configured to supply power to the first heating element and the second heating element; a system controller coupled to the power source and configured to control the power source; and a memory coupled to the controller comprising a computer-readable medium having a computer-readable program embodiment therein for directing operation of the system, the computer-readable program comprising: instructions for controlling the temperature at the stage by regulating the power supply to each of the first heating element and the second heating element.