Multiple complementary gas distribution assemblies
First Claim
1. An apparatus, comprising:
- a first gas distribution assembly that includes a first gas passage for introducing a first process gas into a second gas passage that introduces the first process gas into a processing chamber; and
a second gas distribution assembly that includes a third gas passage for introducing a second process gas into a fourth gas passage that introduces the second process gas into the processing chamber, wherein the first and second gas distribution assemblies are each adapted to be coupled to at least one chamber wall of a processing chamber, wherein the second gas passage and the fourth gas passage each include a plurality of orifices to introduce the first and second process gases into the processing chamber, wherein the first gas passage is shaped as a first annular ring within the processing chamber at a first height above the second gas passage that is shaped as a second annular ring for uniform distribution of the first process gas at a different second height within the processing chamber, wherein the third gas passage is positioned within the processing chamber at a third different height below the first height of the first gas passage and above the second height of the second gas passage.
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Accused Products
Abstract
In one embodiment, an apparatus includes a first gas distribution assembly that includes a first gas passage for introducing a first process gas into a second gas passage that introduces the first process gas into a processing chamber and a second gas distribution assembly that includes a third gas passage for introducing a second process gas into a fourth gas passage that introduces the second process gas into the processing chamber. The first and second gas distribution assemblies are each adapted to be coupled to at least one chamber wall of the processing chamber. The first gas passage is shaped as a first ring positioned within the processing chamber above the second gas passage that is shaped as a second ring positioned within the processing chamber. The gas distribution assemblies may be designed to have complementary characteristic radial film growth rate profiles.
19 Citations
19 Claims
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1. An apparatus, comprising:
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a first gas distribution assembly that includes a first gas passage for introducing a first process gas into a second gas passage that introduces the first process gas into a processing chamber; and a second gas distribution assembly that includes a third gas passage for introducing a second process gas into a fourth gas passage that introduces the second process gas into the processing chamber, wherein the first and second gas distribution assemblies are each adapted to be coupled to at least one chamber wall of a processing chamber, wherein the second gas passage and the fourth gas passage each include a plurality of orifices to introduce the first and second process gases into the processing chamber, wherein the first gas passage is shaped as a first annular ring within the processing chamber at a first height above the second gas passage that is shaped as a second annular ring for uniform distribution of the first process gas at a different second height within the processing chamber, wherein the third gas passage is positioned within the processing chamber at a third different height below the first height of the first gas passage and above the second height of the second gas passage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method comprising:
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introducing a first process gas into a first sidewall gas distribution assembly that includes a first gas passage and a second gas passage; and introducing a second process gas into a second sidewall gas distribution assembly that includes a third gas passage and a fourth gas passage, wherein the first and second sidewall gas distribution assemblies are each adapted to be coupled to at least one chamber wall of a processing chamber, wherein the second gas passage and the fourth gas passage each include a plurality of orifices to introduce the first and second process gases respectively into the processing chamber, wherein the first sidewall gas distribution assembly has a first characteristic radial film growth rate profile having a faster growth rate near a center of a susceptor of the processing chamber and the second sidewall gas distribution assembly has a second characteristic radial film growth rate profile having a faster growth rate near an edge of the susceptor to complement each other to produce a net uniform radial growth rate profile. - View Dependent Claims (12, 13, 14, 15, 16)
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17. An apparatus, comprising:
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a first sidewall gas distribution assembly that includes a first plurality of orifices to introduce one or more process gases into a processing chamber; and a second sidewall gas distribution assembly that includes a second plurality of orifices to introduce one or more process gases into the processing chamber, wherein the first and second gas distribution assemblies are each adapted to be coupled to at least one chamber wall of the processing chamber, wherein the first sidewall gas distribution assembly has a first characteristic radial film growth rate profile having a faster growth rate near a center of a susceptor of the processing chamber and the second sidewall gas distribution assembly has a second characteristic radial film growth rate profile having a faster growth rate near an edge of the susceptor to complement each other to produce a net uniform radial growth rate profile. - View Dependent Claims (18, 19)
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Specification