POROUS SUBSTRATE HOLDER WITH THINNED PORTIONS
First Claim
1. A substrate support system comprising a substrate holder for supporting a substrate, the substrate holder comprising a central portion such that the substrate is spaced apart from the central portion when the substrate is supported by the substrate holder, the central portion having one or more recesses defining thinned portions of the central portion, the central portion being formed of a material having a porosity between about 10%-40% and configured to allow gas flow therethrough.
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Accused Products
Abstract
A substrate support system comprises a substrate holder for supporting a substrate. The substrate holder comprises a central portion sized and shaped to extend beneath most or all of a substrate supported on the substrate holder. The central portion has one or more recesses defining thinned portions of the central portion. The one or more thinned portions may comprise at least about 10% of an upper or lower surface of the central portion. The central portion is formed of a porous material, such as a material having a porosity between about 10-40%, configured to allow gas flow therethrough.
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Citations
30 Claims
- 1. A substrate support system comprising a substrate holder for supporting a substrate, the substrate holder comprising a central portion such that the substrate is spaced apart from the central portion when the substrate is supported by the substrate holder, the central portion having one or more recesses defining thinned portions of the central portion, the central portion being formed of a material having a porosity between about 10%-40% and configured to allow gas flow therethrough.
- 15. A substrate support system comprising a substrate holder for supporting a substrate, the substrate holder comprising a central portion having an upper surface, a lower surface, and a plurality of recesses, each recess being formed in one of the upper surface and the lower surface, each recess defining a thinned portion of the central portion, the central portion formed of a porous material.
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24. A method of processing a substrate, comprising:
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providing a substrate holder comprising a central portion having one or more recesses defining thinned portions of the central portion, wherein the one or more thinned portions are configured to allow gas flow therethrough; resting a substrate onto the substrate holder so that a gap region is formed between an upper surface of the central portion and a bottom surface of the substrate; and directing an inert or cleaning gas through the one or more thinned portions of the substrate holder. - View Dependent Claims (25, 26, 27, 28, 29)
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30. A substrate holder for supporting a substrate, the substrate holder comprising a central portion having an upper surface, a lower surface, and a plurality of recesses each formed in one of the upper surface and the lower surface, each recess defining a thinned portion of the central portion, the central portion formed of a porous material configured to permit gas flow therethrough without allowing light to pass therethrough, the central portion including at least one through-hole configured to receive an upward flow of gas.
Specification