Chamber having process monitoring window
First Claim
Patent Images
1. A substrate processing chamber comprising:
- (a) a support to support a substrate;
(b) a gas distributor;
(c) a gas energizer;
(d) a wall ceiling adapted to face the substrate, the ceiling comprising a radiation transmitting portion;
(e) a mask overlying the radiation transmitting portion and extending into a process zone of the process chamber, the mask having an aperture comprising an aspect ratio that is selected to reduce deposition of process residue on 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 whereby radiation may be transmitted through the aperture of the mask and the radiation transmitting portion.
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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 which may comprise a window or radiation transmitting portion 130 that allows light to be transmitted therethrough. Residue deposits onto the window 130 during processing of the substrate 30 may be reduced. 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.
143 Citations
70 Claims
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1. A substrate processing chamber comprising:
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(a) a support to support a substrate;
(b) a gas distributor;
(c) a gas energizer;
(d) a wall ceiling adapted to face the substrate, the ceiling comprising a radiation transmitting portion;
(e) a mask overlying the radiation transmitting portion and extending into a process zone of the process chamber, the mask having an aperture comprising an aspect ratio that is selected to reduce deposition of process residue on 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 whereby radiation may be transmitted through the aperture of the mask and the radiation transmitting portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 70)
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12. A substrate processing chamber comprising:
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(a) a support having a receiving surface capable of supporting a substrate, (b) a gas distributor capable of providing process gas in the chamber and a gas energizer that is capable of coupling energy to the process gas;
(c) a wall comprising a radiation transmitting portion that allows radiation to be transmitted therethrough to monitor processing of the substrate;
(d) a mask overlying the radiation transmitting portion and extending into a process zone of the chamber, the mask having an aperture comprising an aspect ratio that is selected to reduce deposition of process residue on the radiation transmitting portion, the aspect ratio being from about 0.25;
1 to about 3;
1; and
(e) an exhaust capable of exhausting process gas from the chamber. - View Dependent Claims (13, 14)
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15. A substrate processing chamber comprising:
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(a) a support to support a substrate;
(b) a gas distributor;
(c) a gas energizer;
(d) a ceiling adapted to face the substrate, the ceiling comprising a radiation transmitting portion having a mask extending into a process zone of the chamber, the mask having a plurality of apertures, the apertures having an aspect ratio that is selected to reduce deposition of process residues on the radiation transmitting portion; and
(e) 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 whereby radiation may be transmitted through the apertures and the radiation transmitting portion. - View Dependent Claims (16)
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17. A ceiling capable of being mounted on a process chamber facing a substrate, the ceiling comprising:
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a radiation transmitting portion; and
an overlying mask adapted to extend into a process zone of the chamber, the overlying mask comprising a plurality of apertures having an aspect ratio that is selected to reduce deposition of process residues on the radiation transmitting portion, whereby radiation may be transmitted through the radiation transmitting portion when a substrate is processed in the process chamber. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A substrate processing chamber comprising:
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(a) a support;
(b) a gas distributor;
(c) a gas energizer;
(d) a wall comprising a radiation transmitting portion;
(e) a mask overlying the radiation transmitting portion, the mask having an aperture;
(f) an electrical field source that is adapted to couple electrical energy to the wall to reduce deposition of process residues on the wall; and
(g) an exhaust, wherein 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 whereby the mask is adapted to reduce deposition of process residue on the radiation transmitting portion and whereby radiation may be transmitted through the aperture of the mask and the radiation transmitting portion. - View Dependent Claims (30, 31, 32, 33, 34, 35)
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36. A substrate processing chamber comprising:
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(a) a support;
(b) a gas distributor;
(c) a gas energizer;
(d) a wall comprising a radiation transmitting portion;
(e) a mask overlying the radiation transmitting portion, the mask having an aperture;
(f) a magnetic field source adapted to provide a magnetic flux across the wall to reduce deposition of process residues on the wall; and
(g) 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 whereby the mask is adapted to reduce deposition of process residue on the radiation transmitting portion and whereby radiation may be transmitted through the aperture of the mask and the radiation transmitting portion. - View Dependent Claims (37, 38, 39, 40, 41, 42)
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43. A substrate processing chamber comprising:
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(a) a support having a receiving surface capable of supporting a substrate;
(b) a gas distributor capable of providing process gas in the chamber and a gas energizer that is capable of coupling energy to the process gas;
(c) a radiation transmitting portion that allows radiation to be transmitted therethrough to monitor processing of the substrate;
(d) means extending into the interior of the chamber for reducing deposition of process residue from process gas on the radiation transmitting portion;
(e) an electrical field source that couples electrical energy to the radiation transmitting portion to further reduce deposition of process residues on the radiation transmitting portion; and
(f) an exhaust capable of exhausting process gas from the chamber. - View Dependent Claims (44, 45, 46, 47)
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48. A substrate processing chamber comprising:
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(a) a support having a receiving surface capable of supporting a substrate;
(b) a gas distributor capable of providing process gas in the chamber and a gas energizer that is capable of coupling energy to the process gas;
(c) a radiation transmitting portion that allows radiation to be transmitted therethrough to monitor processing of the substrate;
(d) means extending into the interior of the chamber for reducing deposition of process residue from process gas on the radiation transmitting portion;
(e) a magnetic field source adapted to provide a magnetic flux across the radiation transmitting portion to further reduce the deposition of process residues on the radiation transmitting portion; and
(f) an exhaust capable of exhausting process gas from the chamber. - View Dependent Claims (49, 50, 51, 52)
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53. A window capable of being mounted on a process chamber, the window comprising:
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a radiation transmitting portion;
an overlying mask with an aperture; and
an electrical field source that is adapted to couple electrical energy to the radiation transmitting portion to reduce deposition of the process residues on the radiation transmitting portion, whereby the mask is adapted to reduce deposition of process residue on the window and whereby radiation may be transmitted through the window when a substrate is processed in the process chamber. - View Dependent Claims (54, 55, 56, 57, 58, 59, 60)
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61. A window capable of being mounted on a process chamber, the window comprising:
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a radiation transmitting portion;
an overlying mask with an aperture; and
a magnetic field source adapted to provide a magnetic flux across the radiation transmitting portion to reduce deposition of process residues on the radiation transmitting portion;
whereby the mask is adapted to reduce deposition of process residue on the window and whereby radiation may be transmitted through the window when a substrate is processed in the process chamber. - View Dependent Claims (62, 63, 64, 65, 66, 67, 68)
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69. A substrate processing chamber comprising:
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(a) a support having a receiving surface capable of supporting a substrate;
(b) a gas distributor capable of providing process gas in the chamber and a gas energizer that is capable of coupling energy to the process gas;
(c) a wall comprising a radiation transmitting portion that allows radiation to be transmitted therethrough to monitor processing of the substrate;
(d) a mask overlying the radiation transmitting portion and extending into a process zone of the chamber, the mask having an aperture comprising an aspect ratio that is sufficiently small to allow ions of the energized gas to enter the aperture and etch away the process residues formed on a sidewall of the aperture and the radiation transmitting portion to reduce deposition of process residue on the radiation transmitting portion, the aspect ratio being from about 0.25;
1 to about 3;
1; and
(e) an exhaust capable of exhausting process gas from the chamber.
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Specification