Patent ID: 6191399
Filing Date: 2001-02-20
Classification: G01J,H01L

Abstract:
A method of processing a substrate by a processing operation in a semiconductor processing chamber, comprising the steps of:supporting the substrate on a holder within the chamber;sensing the temperature near the substrate by using a non-contact-type temperature sensor;controlling the temperature of the processing chamber by using at least one temperature controller that is generally responsive to the temperature sensed by said non-contact-type temperature sensor;sensing the temperature of said substrate within the processing chamber during a steady state portion of the processing operation by using a contact-type temperature sensor;sensing the temperature of the substrate by using said non-contact-type sensor, at substantially the same time as said sensing by using said contact-type sensor;comparing the temperature sensed by the contact-type sensor to the temperature sensed by the non-contact-type sensor; andadjusting the response of the temperature controller to the temperature sensed by the non-contact-type sensor based on the comparison.