Chamber having improved process monitoring window
First Claim
1. A process chamber capable of processing a substrate, the process chamber comprising:
- (a) a support;
(b) a gas distributor;
(c) a gas energizer;
(d) a radiation transmitting portion capable of transmitting radiation to or from the process chamber during processing of a substrate;
(e) electromagnetic means for reducing deposition of process residue on the radiation transmitting portion absent a heating element for heating the radiation transmitting portion; and
(f) an exhaust, whereby a substrate held on the support may be processed by process gas distributed by the gas distributor, energized by the gas energizer, and exhausted by the exhaust, and the electromagnetic means for reducing deposition of process residue on the radiation transmitting portion allows radiation to be transmitted through the radiation transmitting portion to monitor processing of the substrate.
1 Assignment
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Accused Products
Abstract
A process chamber 35 for processing a substrate 30 and monitoring the process conducted on the substrate 30, comprises a support 45, a gas distributor, and an exhaust 85. The process chamber 35 has a wall comprising a window 130 that allows light to be transmitted therethrough and reduces deposition of process residue from the process gas onto the window 130 during processing of the substrate 30. In one version, the window 130 comprises a transparent plate 135 covered by an overlying mask 140 that has at least one aperture 145 extending through the mask 140 so that light can be transmitted through the aperture 145 and the transparent plate 135.
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Citations
66 Claims
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1. A process chamber capable of processing a substrate, the process chamber comprising:
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(a) a support;
(b) a gas distributor;
(c) a gas energizer;
(d) a radiation transmitting portion capable of transmitting radiation to or from the process chamber during processing of a substrate;
(e) electromagnetic means for reducing deposition of process residue on the radiation transmitting portion absent a heating element for heating the radiation transmitting portion; and
(f) an exhaust, whereby a substrate held on the support may be processed by process gas distributed by the gas distributor, energized by the gas energizer, and exhausted by the exhaust, and the electromagnetic means for reducing deposition of process residue on the radiation transmitting portion allows radiation to be transmitted through the radiation transmitting portion to monitor processing of the substrate. - View Dependent Claims (2, 3, 4, 5)
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6. A process chamber capable of processing a substrate, the process chamber comprising:
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(a) a support;
(b) a gas distributor;
(c) a gas energizer;
(d) a window in a wall of the process chamber;
(e) a magnetic field source adapted to provide a magnetic flux across the window; and
(f) an exhaust;
whereby a substrate held on the support may be processed by an energized process gas thereby forming process residues in the process chamber, and whereby the magnetic flux across the window reduces the deposition of the process residues on the window. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A process chamber capable of processing a substrate, the process chamber comprising:
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(a) a support;
(b) a gas distributor;
(c) a gas energizer;
(d) a window in a wall of the process chamber;
(e) an electrical field source that couples electrical energy to the window; and
(f) an exhaust;
whereby a substrate held on the support may be processed by an energized process gas thereby forming process residues in the process chamber, and whereby the electrical energy coupled to the window reduces deposition of the process residues on the window. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A process chamber capable of processing a substrate, the process chamber comprising:
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(a) a support;
(b) a gas distributor to provide a process gas in the chamber;
(c) a wall about the support;
(d) a gas energizer adapted to couple RF energy through the wall to energize the process gas, the gas energizer comprising at least one of an inductor antenna or process electrodes;
(e) a magnetic field source adapted to provide a magnetic flux across a portion of the wall, the magnetic flux selected to be sufficiently high to reduce a deposition of process residues on the portion of the wall; and
(f) an exhaust capable of exhausting the process gas from the chamber;
whereby a substrate held on the support may be processed by the energized process gas thereby forming the process residues in the process chamber, and whereby the magnetic flux across the wall reduces the deposition of the process residues on the wall. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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43. A process chamber capable of processing a substrate, the process chamber comprising:
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(a) a support;
(b) a gas distributor to provide a process gas in the chamber;
(c) a gas energizer to energize the process gas;
(d) a wall about the support;
(e) an electrical field source to couple electrical energy to a portion of the wall to reduce a deposition of process residues on the portion of the wall; and
(f) an exhaust capable of exhausting the process gas from the chamber;
whereby a substrate held on the support may be processed by the energized process gas thereby forming process residues in the process chamber, and whereby the electrical energy coupled to the wall reduces the deposition of the process residues on the wall. - View Dependent Claims (44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56)
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57. A process chamber capable of processing a substrate, the process chamber comprising:
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(a) a support;
(b) a gas distributor;
(c) a gas energizer;
(d) a window in a wall of the process chamber;
(e) a process monitoring system adapted to monitor radiation transmissions passing through the window;
(f) a magnetic field source adapted to provide a magnetic flux across the window; and
(g) an exhaust;
whereby a substrate held on the support may be processed by an energized process gas thereby forming process residues in the process chamber, and whereby the magnetic flux across the window reduces the deposition of the process residues on the window. - View Dependent Claims (58, 59, 60, 61)
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62. A process chamber capable of processing a substrate, the process chamber comprising:
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(a) a support;
(b) a gas distributor;
(c) a gas energizer;
(d) a window in a wall of the process chamber;
(e) a process monitoring system adapted to monitor radiation transmissions passing through the window;
(f) an electrical field source that couples electrical energy to the window; and
(g) an exhaust;
whereby a substrate held on the support may be processed by an energized process gas thereby forming process residues in the process chamber, and whereby the electrical energy coupled to the window reduces deposition of the process residues on the window. - View Dependent Claims (63, 64, 65, 66)
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Specification