Showerheads
First Claim
Patent Images
1. A showerhead for substrate processing including:
- a gas inlet leading to a gas reservoir;
a faceplate fitted between the reservoir and a processing space, the faceplate including a plurality of orifices, and a sheet including a plurality of orifices, the sheet orifices being smaller in size than the minimum diameter of the faceplate orifices, wherein the sheet is fitted in or on the showerhead such that the fluid passes to the process space from the reservoir via the sheet orifices.
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Abstract
A showerhead for substrate processing including a gas inlet leading to a gas reservoir. A faceplate including a plurality of orifices is fitted between the reservoir and a processing space. The showerhead further includes a sheet including a plurality of orifices, the sheet orifices being smaller in size than the minimum diameter of the faceplate orifices. The sheet is fitted in or on the showerhead such that the fluid passes to the process space from the reservoir via the sheet orifices.
113 Citations
21 Claims
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1. A showerhead for substrate processing including:
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a gas inlet leading to a gas reservoir;
a faceplate fitted between the reservoir and a processing space, the faceplate including a plurality of orifices, and a sheet including a plurality of orifices, the sheet orifices being smaller in size than the minimum diameter of the faceplate orifices, wherein the sheet is fitted in or on the showerhead such that the fluid passes to the process space from the reservoir via the sheet orifices. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of manufacturing a showerhead for substrate processing, the method including steps of:
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forming a plurality of orifices in a sheet, and fitting the sheet in a showerhead having a gas inlet leading to a gas reservoir and a faceplate fitted between the reservoir and a processing space, the sheet being fitted in or on the showerhead such that fluid passes from the reservoir to the processing space via the sheet orifices, wherein the size of the sheet orifices is less than the minimum diameter of orifices in the faceplate. - View Dependent Claims (18)
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- 19. A sheet adapted for fitting in a showerhead for substrate processing, the sheet including a plurality of orifices of diameter smaller than the minimum diameter of orifices in a faceplate of the showerhead into which the sheet is to be fitted.
Specification