Diffuser support
First Claim
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1. A gas distribution apparatus for a plasma processing chamber, comprising:
- a backing plate;
a diffuser disposed downstream of the backing plate;
a frame structure disposed outside of the plasma processing chamber, the frame structure being spaced apart from the processing chamber by two or more support members; and
a diffuser support member coupled to the frame structure and the diffuser, the diffuser support member being movably disposed through and spaced apart from the backing plate such that a gap is present therebetween, wherein the backing plate is movable independent of the diffuser when the diffuser is coupled with the diffuser support member and the frame structure.
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Abstract
Embodiments of gas distribution apparatus comprise a diffuser support member coupled to a diffuser and movably disposed through a backing plate. Embodiments of methods of processing a substrate on a substrate receiving surface of a substrate support comprise providing a diffuser in which a diffuser support member supports the diffuser and is movably disposed through the backing plate.
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Citations
19 Claims
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1. A gas distribution apparatus for a plasma processing chamber, comprising:
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a backing plate; a diffuser disposed downstream of the backing plate; a frame structure disposed outside of the plasma processing chamber, the frame structure being spaced apart from the processing chamber by two or more support members; and a diffuser support member coupled to the frame structure and the diffuser, the diffuser support member being movably disposed through and spaced apart from the backing plate such that a gap is present therebetween, wherein the backing plate is movable independent of the diffuser when the diffuser is coupled with the diffuser support member and the frame structure. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A plasma processing apparatus, comprising:
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a chamber body including a bottom and walls; a backing plate disposed over the chamber body; a chamber interior volume bounded by the chamber body and the backing plate; a frame structure disposed outside of the chamber body and spaced apart from the backing plate, the frame structure comprising a length that is equal to a length or a width of the chamber body, and a width that is less than a width of the chamber body; a diffuser disposed within the chamber interior volume; a coupling assembly disposed between the backing plate and the frame structure, and coupled to the frame structure by one or more fasteners; and a diffuser support member coupled to the diffuser and the coupling assembly, the diffuser support member disposed between the diffuser and the coupling assembly and movably disposed through the backing plate and spaced apart from the backing plate such that a gap is present therebetween. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A plasma processing apparatus, comprising:
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a chamber body having a lid, a bottom, walls, and a backing plate coupled to the lid defining a chamber interior volume; a frame structure disposed outside of the chamber body and spaced apart from the chamber lid by two or more support members, the frame structure comprising a length that is equal to a length or a width of the chamber body, and a width that is less than a width of the chamber body; a diffuser disposed within the chamber interior volume, an edge portion of the diffuser being coupled to the backing plate by a suspension member; and at least one diffuser support member extending between the frame structure and the diffuser through an opening in the backing plate, the diffuser support member being spaced apart from the backing plate such that a gap is present between the opening and the diffuser support member that facilitates support of the diffuser independent from the backing plate such that the backing plate is movable relative to the diffuser while the diffuser is coupled to the at least one diffuser support member. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification