Reactor chamber for an externally excited torroidal plasma source with a gas distribution plate
First Claim
1. A plasma chamber defining an evacuated interior environment for processing a substrate, said chamber comprising:
- a substrate support;
an apertured gas distribution plate in spaced facing relationship to the substrate support, and adapted to flow process gases into the chamber interior environment adjacent the substrate support, said gas distribution plate and substrate support defining a substrate processing region therebetween;
a hollow conduit having respective ends opening into said substrate processing region on opposite sides of said gas distribution plate, with the interior of said conduit sharing the interior environment;
a side wall surrounding said processing region between said gas distribution plate and said substrate support;
said conduit being adapted to accept irradiation by an RF field of processing gases within the conduit to sustain a plasma in a reentrant path extending around the conduit interior and across the substrate processing region within said chamber interior environment, said path being bounded by said side wall.
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Accused Products
Abstract
A plasma chamber defining an evacuated interior environment for processing a substrate includes a substrate support, an apertured gas distribution plate in spaced facing relationship to the substrate support, and adapted to flow process gases into the chamber interior environment adjacent the substrate support, the gas distribution plate and substrate support defining a substrate processing region therebetween. A hollow conduit having respective ends opening into the substrate processing region on opposite sides of the gas distribution plate, with the interior of the conduit sharing the interior environment. The conduit being adapted to accept irradiation by an RF field of processing gases within the conduit to sustain a plasma in a path extending around the conduit interior and across the substrate processing region within the chamber interior environment.
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Citations
21 Claims
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1. A plasma chamber defining an evacuated interior environment for processing a substrate, said chamber comprising:
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a substrate support;
an apertured gas distribution plate in spaced facing relationship to the substrate support, and adapted to flow process gases into the chamber interior environment adjacent the substrate support, said gas distribution plate and substrate support defining a substrate processing region therebetween;
a hollow conduit having respective ends opening into said substrate processing region on opposite sides of said gas distribution plate, with the interior of said conduit sharing the interior environment;
a side wall surrounding said processing region between said gas distribution plate and said substrate support;
said conduit being adapted to accept irradiation by an RF field of processing gases within the conduit to sustain a plasma in a reentrant path extending around the conduit interior and across the substrate processing region within said chamber interior environment, said path being bounded by said side wall. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification