Method and system of dry cleaning a processing chamber
First Claim
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1. A method of dry cleaning a plasma processing system comprising:
- selecting a dry cleaning process recipe for substantially reducing particulate contamination during said dry cleaning of said plasma processing system, wherein said dry cleaning process recipe comprises setting at least one of a mass flow rate of a process gas, a pressure for said dry cleaning process, and a power for forming a plasma from said process gas; and
executing said dry cleaning process recipe in said plasma processing system to facilitate said dry cleaning.
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Abstract
A method of dry cleaning a plasma processing system is described, wherein the formation of particulate during dry cleaning is substantially minimized. In one embodiment, the dry cleaning process is adjusted in order to substantially reduce spatial variations of the dry cleaning rate within the plasma processing system. In another embodiment, endpoint detection is utilized to determine the completion of the dry cleaning process in order to avoid excessive ion sputtering of the underlying process chamber components.
36 Citations
20 Claims
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1. A method of dry cleaning a plasma processing system comprising:
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selecting a dry cleaning process recipe for substantially reducing particulate contamination during said dry cleaning of said plasma processing system, wherein said dry cleaning process recipe comprises setting at least one of a mass flow rate of a process gas, a pressure for said dry cleaning process, and a power for forming a plasma from said process gas; and
executing said dry cleaning process recipe in said plasma processing system to facilitate said dry cleaning. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A plasma processing system for processing a substrate comprising:
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a process chamber;
a substrate holder coupled to said process chamber and configured to support said substrate;
a gas injection system coupled to said process chamber and configured to introduce a cleaning gas;
a plasma source coupled to said process chamber and configure to form plasma from said cleaning gas; and
a controller coupled to said process chamber and configured to execute a process recipe for dry cleaning said processing system periodically, wherein said process recipe substantially minimizes particulate formation during said dry cleaning. - View Dependent Claims (17)
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18. A method of optimizing a dry cleaning process in a plasma processing system, comprising:
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performing a dry cleaning process in said plasma processing system, wherein said dry cleaning process comprises introducing a process gas having oxygen, setting a pressure in said plasma processing system, and igniting a plasma from said process gas;
determining a first cleaning rate at a first location;
determining a second cleaning rate at a second location; and
adjusting said dry cleaning process in order to minimize a difference between said first cleaning rate and said second cleaning rate. - View Dependent Claims (19, 20)
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Specification