Patent ID: 11887815
Assignee: TOKYO ELECTRON LIMITED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 14:
15. A method for plasma processing of a semiconductor wafer, the method comprising:
loading the semiconductor wafer in a plasma processing chamber coupled to a radio frequency (RF) source electrode and a microwave power system comprising a conductive spatial uniformity component comprising a plurality of through openings, the conductive spatial uniformity component comprising a major surface coupled to a depth adjuster, a microwave oscillator and a microwave source;
igniting plasma by coupling RF power from the RF source electrode to gas in the plasma processing chamber;
coupling microwave power from the microwave power system to a plasma ignited in the plasma processing chamber by coupling the microwave oscillator to the microwave source; and
changing, with the depth adjuster, an unfilled depth of the plurality of through openings to control a combined electromagnetic (EM) power being supplied to the plasma, wherein controlling the combined EM power adjusts a spatial uniformity metric of EM power.