Plasma processing system
First Claim
Patent Images
1. A method of operating a plasma processing system, comprising:
- positioning a substrate on a substrate holder in a processing chamber;
initializing the plasma processing system;
igniting a plasma using a first signal at a first RF frequency, wherein a first frequency source is coupled to an electrode in the processing chamber; and
sustaining the plasma using a second signal at a second RF frequency.
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Abstract
A processing system having a processing chamber that includes a substrate holder and an electrode. The processing system can include a pressure control system, gas supply system, and monitoring system. A multi-frequency RF source is coupled to the electrode using a reduced-element matching network having a single variable element. The multi-frequency RF source is set to a first frequency to ignite a plasma and to a second frequency to maintain the plasma.
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Citations
49 Claims
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1. A method of operating a plasma processing system, comprising:
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positioning a substrate on a substrate holder in a processing chamber;
initializing the plasma processing system;
igniting a plasma using a first signal at a first RF frequency, wherein a first frequency source is coupled to an electrode in the processing chamber; and
sustaining the plasma using a second signal at a second RF frequency. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A processing system comprising:
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a processing chamber having a substrate holder and an electrode configured above the substrate holder;
a pressure control system coupled to the processing chamber;
a gas supply system coupled to the processing chamber;
a reduced element matching network coupled to the processing chamber and coupled to the electrode;
a RF generator coupled to the reduced element matching network; and
a control system coupled to the pressure control system, the gas supply system, the monitoring system, the matching network, and the RF generator. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
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48. A computer readable medium containing program instructions for execution on a processor, which when executed by the processor, cause a plasma processing system to perform the steps of:
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initializing the plasma processing system;
supplying a first signal at a first RF frequency to ignite a plasma, wherein a first frequency source is coupled to an electrode in the processing chamber; and
supplying a second signal at a second RF frequency to sustain the plasma.
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49. A plasma processing system comprising:
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means for initializing the plasma processing system;
means for supplying a first signal at a first RF frequency to ignite a plasma, said means for supplying coupling said first signal to an electrode in the processing chamber; and
means for supplying a second signal at a second RF frequency to sustain the plasma.
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Specification