Dual-channel showerhead with improved profile
First Claim
1. A semiconductor processing chamber comprising:
- a chamber housing at least partially defining an interior region of the semiconductor processing chamber, wherein the chamber housing comprises a lid;
a pedestal configured to support a substrate within a processing region of the semiconductor processing chamber;
a first showerhead positioned within the semiconductor processing chamber between the lid and the processing region;
a faceplate positioned within the semiconductor processing chamber between the first showerhead and the processing region; and
a second showerhead positioned within the semiconductor processing chamber between the faceplate and the processing region of the semiconductor processing chamber, wherein the second showerhead comprises at least two plates coupled together to define a volume between the at least two plates, wherein the at least two plates at least partially define channels through the second showerhead, and wherein each channel is characterized by a first diameter at a first end of the channel and is characterized by a plurality of ports at a second end of the channel.
1 Assignment
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Accused Products
Abstract
Described processing chambers may include a chamber housing at least partially defining an interior region of the semiconductor processing chamber. The chambers may include a pedestal. The chambers may include a first showerhead positioned between the lid and the processing region, and may include a faceplate positioned between the first showerhead and the processing region. The chambers may also include a second showerhead positioned within the chamber between the faceplate and the processing region of the semiconductor processing chamber. The second showerhead may include at least two plates coupled together to define a volume between the at least two plates. The at least two plates may at least partially define channels through the second showerhead, and each channel may be characterized by a first diameter at a first end of the channel and may be characterized by a plurality of ports at a second end of the channel.
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Citations
20 Claims
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1. A semiconductor processing chamber comprising:
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a chamber housing at least partially defining an interior region of the semiconductor processing chamber, wherein the chamber housing comprises a lid; a pedestal configured to support a substrate within a processing region of the semiconductor processing chamber; a first showerhead positioned within the semiconductor processing chamber between the lid and the processing region; a faceplate positioned within the semiconductor processing chamber between the first showerhead and the processing region; and a second showerhead positioned within the semiconductor processing chamber between the faceplate and the processing region of the semiconductor processing chamber, wherein the second showerhead comprises at least two plates coupled together to define a volume between the at least two plates, wherein the at least two plates at least partially define channels through the second showerhead, and wherein each channel is characterized by a first diameter at a first end of the channel and is characterized by a plurality of ports at a second end of the channel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A showerhead comprising:
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a first plate defining a plurality of through-holes; and a second plate coupled with the first plate, wherein the second plate defines a first plurality of apertures and a second plurality of apertures, wherein the second plurality of apertures are defined in the second plate in a plurality of groups of apertures including at least two apertures of the second plurality of apertures, and wherein each through-hole of the first plate is aligned with at least one group of apertures to produce a channel. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. A showerhead comprising:
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a first plate defining a first plurality of apertures, wherein the first plurality of apertures are defined in the first plate in a plurality of groups of apertures including at least two apertures of the first plurality of apertures; and a second plate coupled with the first plate, wherein the second plate defines a second plurality of apertures and a plurality of through-holes, and wherein each through-hole of the second plate is aligned with at least one group of apertures of the first plurality of apertures to produce a channel.
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Specification