Patent ID: 9679792
Date: 2017-06-13
CPC Classifications: F25B,H01L

Claim:
1. A temperature control system for use in semiconductor wafer manufacture comprising: a target having a temperature, the target is an electrostatic chuck with a platen and the platen is adapted for receiving a semiconductor wafer; a fluid circulation loop coupled to the target for controlling the temperature of the target; a heating heat exchanger coupled to the fluid circulation loop for selectively providing heat to the fluid circulation loop; a cooling heat exchanger coupled to the fluid circulation loop for selectively providing cooling to the fluid circulation loop; and a plurality of thermal electric elements carried by the platen of the target for selectively providing heating or cooling to the target, the plurality of thermal electric elements are a plurality of p-type and n-type semiconductor elements, whereby the heating heat exchanger and cooling heat exchanger provide gross control of the temperature of the semiconductor wafer and the plurality of thermal electric elements provide fine control of the temperature of the semiconductor wafer.