Gas delivery apparatus and method for atomic layer deposition
First Claim
1. A chamber, comprising:
- a substrate support having a substrate receiving surface;
a chamber lid comprising;
an expanding channel at a central portion of the chamber lid; and
a tapered bottom surface extending from the expanding channel to a peripheral portion of the chamber lid, wherein the tapered bottom surface is shaped and sized to substantially cover the substrate receiving surface, and wherein a plurality of flow sections are defined between the tapered bottom surface of the chamber lid and the substrate receiving surface, wherein a ratio of a maximum area of the flow sections to a minimum area of the flow sections is less than about 2.0;
one or more gas conduits coupled to the expanding channel, wherein the one or more gas conduits are positioned at an angle from a center of the expanding channel and wherein the one or more gas conduits comprise one or more valves; and
one or more gas sources coupled to each valve.
1 Assignment
0 Petitions
Accused Products
Abstract
One embodiment of the gas delivery assembly comprises a covering member having an expanding channel at a central portion of the covering member and having a bottom surface extending from the expanding channel to a peripheral portion of the covering member. One or more gas conduits are coupled to the expanding channel in which the one or more gas conduits are positioned at an angle from a center of the expanding channel. One embodiment of a chamber comprises a substrate support having a substrate receiving surface. The chamber further includes a chamber lid having a passageway at a central portion of the chamber lid and a tapered bottom surface extending from the passageway to a peripheral portion of the chamber lid. The bottom surface of the chamber lid is shaped and sized to substantially cover the substrate receiving surface. One or more valves are coupled to the passageway, and one or more gas sources are coupled to each valve. In one aspect, the bottom surface of the chamber lid may be tapered. In another aspect, a reaction zone defined between the chamber lid and the substrate receiving surface may comprise a small volume. In still another aspect, the passageway may comprise a tapered expanding channel extending from the central portion of the chamber lid. Another embodiment of the chamber comprises a substrate support having a substrate receiving surface. The chamber further comprises a chamber lid having an expanding channel extending from a central portion of the chamber lid and having a tapered bottom surface extending from the expanding channel to a peripheral portion of the chamber lid. One or more gas conduits are disposed around an upper portion of the expanding channel in which the one or more gas conduits are disposed at an angle from a center of the expanding channel. A choke is disposed on the chamber lid adjacent a perimeter of the tapered bottom surface.
868 Citations
21 Claims
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1. A chamber, comprising:
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a substrate support having a substrate receiving surface;
a chamber lid comprising;
an expanding channel at a central portion of the chamber lid; and
a tapered bottom surface extending from the expanding channel to a peripheral portion of the chamber lid, wherein the tapered bottom surface is shaped and sized to substantially cover the substrate receiving surface, and wherein a plurality of flow sections are defined between the tapered bottom surface of the chamber lid and the substrate receiving surface, wherein a ratio of a maximum area of the flow sections to a minimum area of the flow sections is less than about 2.0;
one or more gas conduits coupled to the expanding channel, wherein the one or more gas conduits are positioned at an angle from a center of the expanding channel and wherein the one or more gas conduits comprise one or more valves; and
one or more gas sources coupled to each valve. - View Dependent Claims (2, 3, 4)
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5. A chamber, comprising:
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a substrate support having a substrate receiving surface;
a chamber lid comprising;
an expanding channel at a central portion of the chamber lid; and
a tapered bottom surface extending from the expanding channel to a peripheral portion of the chamber lid, wherein the tapered bottom surface is shaped and sized to substantially cover the substrate receiving surface, and wherein a reaction zone defined between the chamber lid and the substrate receiving surface comprises about 1.000 cm3 or less and the substrate receiving surface is adapted to receive a 200 mm diameter substrate;
one or more gas conduits coupled to the expanding channel, wherein the one or more gas conduits are positioned at an angle from a center of the expanding channel and wherein the one or more gas conduits comprise one or more valves; and
one or more gas sources coupled to each valve. - View Dependent Claims (6, 7)
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8. A chamber, comprising:
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a substrate support having a substrate receiving surface;
a chamber lid comprising;
an expanding channel at a central portion of the chamber lid; and
a tapered bottom surface extending from the expanding channel to a peripheral portion of the chamber lid, wherein the tapered bottom is surface shaped and sized to substantially cover the substrate receiving surface, and wherein a reaction zone defined between the chamber lid and the substrate receiving surface comprises about 3,000 cm3 or less and the substrate receiving surface is adapted to receive a 300 mm diameter substrate. - View Dependent Claims (9, 10)
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11. A chamber, comprising:
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a substrate support having a substrate receiving surface;
a chamber lid comprising;
an expanding channel at a central portion of the chamber lid; and
a tapered bottom surface extending from the expanding channel to a peripheral portion of the chamber lid, wherein the tapered bottom surface is shaped and sized to substantially cover the substrate receiving surface;
one or more gas conduits coupled to the expanding channel, wherein at least one of the one or more gas conduits has an inner diameter which increases toward the expanding channel and wherein the one or more gas conduits are positioned at an angle from a center of the expanding channel and wherein the one or more gas conduits comprises one or more valves and couple the one or more valves to the expanding channel; and
one or more gas sources coupled to each valve. - View Dependent Claims (12, 13, 18, 19, 20, 21)
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14. A chamber, comprising:
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a substrate support having a substrate receiving surface;
a chamber lid comprising;
an expanding channel at a central portion of the chamber lid; and
a tapered bottom surface extending from the expanding channel to a peripheral portion of the chamber lid, wherein the tapered bottom surface is shaped and sized to substantially cover the substrate receiving surface;
one or more gas conduits coupled to the expanding channel, wherein a longitudinal axis of at least one of the one or more gas conduits is not parallel to a longitudinal axis of the expanding channel, and wherein the one or more gas conduits comprise one or more valves; and
one or more gas sources coupled to each valve. - View Dependent Claims (15, 16, 17)
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Specification