Patent ID: 11908715
Assignee: LAM RESEARCH CORPORATION
Field: Surface technology, coating (Chemistry)
Classification: CPC C  H | IPC H

Claim 15:
16. A method for controlling temperatures of zones in a substrate support of a substrate processing system, comprising:
measuring temperature in one of N zones of a substrate support during operation of the substrate processing system using a temperature sensor located in the one of the N zones, where N is an integer greater than one;
measuring N resistances of N resistive heaters located in the N zones, respectively, during operation of the substrate processing system; and
adjusting power to N−1 of the N resistive heaters in N−1 of the N zones, respectively, during operation of the substrate processing system to control temperatures in N−1 of the N zones in response to:
the measured temperature in the one of the N zones;
the N resistances of the N resistive heaters; and
N−1 resistance ratios.