RF power delivery regulation for processing substrates
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United States of America Patent
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Nov 5, 2019
Grant Date -
Dec 14, 2017
app pub date -
Aug 29, 2017
filing date -
Oct 5, 2015
priority date (Note) -
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Abstract
Methods of operating a plasma enhanced substrate processing system using pulsed radio frequency (RF) power are provided herein. In some embodiments, a method of operating a plasma enhanced substrate processing system using pulsed radio frequency (RF) power includes providing a first pulsed RF power waveform to a process chamber at a first power level during a first time period, providing a second pulsed RF power waveform at a first power level to the process chamber during the first time period, obtaining a first reflected power created by the first and second pulsed RF power waveforms provided during the first time period, and performing a first load leveling process to adjust the first power level of the first pulsed RF power waveform to compensate for the obtained reflected power during the first time period to produce a delivered power at a preset power level.
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