Patent ID: 11961711
Assignee: COMET TECHNOLOGIES USA, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. A radio frequency plasma processing system comprising:
an RF generator;
a plasma chamber receiving RF power from the RF generator for plasma processes applied to substrates within the plasma chamber;
an impedance matching network coupled between the RF generator and the plasma chamber;
sensor coupled to the plasma processing system; and
a controller connected to the sensor performing a method, comprising:
receiving measurements from the sensor during a plasma process on a selected substrate within the plasma chamber,
determining an unacceptable processing condition based on the measurements during the plasma process, and
determining an expected life of a capacitor in the matching network based on the deviation of the electric parameter for the selected substrate from the desired range; and
issuing an intervention command causing a remedial action altering the RF power during the plasma process to avoid improper processing of the substrate, an alert including the expected life of the capacitor in the alert, or a combination thereof.