Method of plasma load impedance tuning by modulation of an...

Adhesive bonding and miscellaneous chemical manufacture – Differential fluid etching apparatus – With measuring – sensing – detection or process control means

Reexamination Certificate

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C156S345440, C156S345240, C156S345200, C315S111210

Reexamination Certificate

active

07967944

ABSTRACT:
A workpiece is processed in a plasma reactor chamber using stabilization RF power delivered into the chamber, by determining changes in load impedance from RF parameters sensed at an RF source or bias power generator and resolving the changes in load impedance into first and second components thereof, and changing the power level of the stabilization RF power as a function one of the components of changes in load impedance.

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