Honeycomb optical window deposition shield and method for a plasma processing system
First Claim
1. An optical window deposition shield comprising:
- a backing plate having a through hole;
a honeycomb structure comprising plural adjacent corrugated sheets attached together to form a plurality of adjacent cells in spaces between the adjacent corrugated sheets, the cells configured to allow optical viewing through the honeycomb structure, each cell having an aspect ratio of length to diameter sufficient to impede a processing plasma from traveling through the full length of the cell; and
a coupling device configured to couple the honeycomb structure to the backing plate such that the honeycomb structure is aligned with at least a portion of the through hole in the backing plate.
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Accused Products
Abstract
An optical window deposition shield including a backing plate having a through hole, and a honeycomb structure having a plurality of adjacent cells configured to allow optical viewing through the honeycomb structure. Each cell of the honeycomb structure has an aspect ratio of length to diameter sufficient to impede a processing plasma from traveling through the full length of the cell. A coupling device configured to couple the honeycomb core structure to the backing plate such that the honeycomb structure is aligned with at least a portion of the through hole in the backing plate. The optical window deposition shield shields the optical viewing window of a plasma processing apparatus from contact with the plasma.
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Citations
47 Claims
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1. An optical window deposition shield comprising:
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a backing plate having a through hole; a honeycomb structure comprising plural adjacent corrugated sheets attached together to form a plurality of adjacent cells in spaces between the adjacent corrugated sheets, the cells configured to allow optical viewing through the honeycomb structure, each cell having an aspect ratio of length to diameter sufficient to impede a processing plasma from traveling through the full length of the cell; and a coupling device configured to couple the honeycomb structure to the backing plate such that the honeycomb structure is aligned with at least a portion of the through hole in the backing plate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. An optical window deposition shield comprising:
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a honeycomb structure planar sheet having a plurality of adjacent cells configured to allow optical viewing through the honeycomb structure, each cell having an aspect ratio of length to diameter sufficient to impede a processing plasma from traveling through the full length of the cell; and a clip device configured to hold opposing ends of the honeycomb planar sheet together to form a substantially continuous liner of honeycomb material configured to line a chamber wall of a plasma processing chamber.
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21. A plasma processing chamber comprising:
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a chamber wall having an optical viewing window; a chamber liner having a liner hole that is substantially aligned with said viewing window to permit viewing an interior of the chamber through the viewing window and liner hole; and an optical window deposition shield substantially aligned with said viewing window and liner hole, the optical viewing window deposition shield comprising a backing plate having a through hole, a honeycomb structure comprising plural adjacent corrugated sheets attached together to form a plurality of adjacent cells in spaces between the adjacent corrugated sheets, the cells configured to allow optical viewing through the honeycomb structure, each cell having an aspect ratio of length to diameter sufficient to impede a processing plasma from traveling through the full length of the cell, and a coupling device configured to couple the honeycomb structure to the backing plate such that the honeycomb structure is aligned with at least a portion of the through hole in the backing plate. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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40. An optical window deposition shield comprising:
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means for impeding processing plasma from traveling into contact with a viewing window of a plasma chamber and for allowing viewing through cells formed between attached adjacent corrugated sheets; and means for holding the means for impeding within an opening of a chamber liner used in the plasma chamber.
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41. A method for impeding a processing plasma from traveling into contact with a viewing window of a plasma chamber, the method comprising;
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providing a mounting hole in a liner of the plasma chamber; and fixedly mounting a honeycomb structure within the mounting hole, said honeycomb structure comprising plural adjacent corrugated sheets attached together to form a plurality of adjacent cells in spaces between the adjacent corrugated sheets, the cells configured to allow optical viewing through the honeycomb structure, each cell having an aspect ratio of length to diameter sufficient to impede a processing plasma from traveling through the full length of the cell.
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42. An optical window deposition shield comprising:
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a backing plate having a through hole; a honeycomb structure comprising a plurality of adjacent cells configured to allow optical viewing through the honeycomb structure, each cell having an aspect ratio of length to diameter sufficient to impede a processing plasma from traveling through the full length of the cell; and a coupling device configured to couple the honeycomb structure to the backing plate such that the honeycomb structure is aligned with at least a portion of the through hole in the backing plate and comprising a retaining flange that is detachably coupled to the backing plate by press contact when the backing plate is coupled to a chamber liner.
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43. An optical window deposition shield comprising:
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a backing plate having a through hole; a honeycomb structure comprising a plurality of adjacent cells configured to allow optical viewing through the honeycomb structure, each cell having an aspect ratio of length to diameter sufficient to impede a processing plasma from traveling through the full length of the cell; and a coupling device configured to couple the honeycomb structure to the backing plate such that the honeycomb structure is aligned with at least a portion of the through hole in the backing plate and comprising at least one retaining pin fixed to the backing plate and configured to engage at least one cell of the honeycomb structure when the honeycomb structure is pressed over the at least one retaining pin. - View Dependent Claims (44)
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45. A plasma processing chamber comprising:
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a chamber wall having an optical viewing window; a chamber liner having a liner hole that is substantially aligned with said viewing window to permit viewing an interior of the chamber through the viewing window and liner hole; and an optical window deposition shield substantially aligned with said viewing window and liner hole, the optical viewing window deposition shield comprising a backing plate having a through hole, a honeycomb structure comprising a plurality of adjacent cells configured to allow optical viewing through the honeycomb structure, each cell having an aspect ratio of length to diameter sufficient to impede a processing plasma from traveling through the full length of the cell, and a coupling device configured to couple the honeycomb structure to the backing plate such that the honeycomb structure is aligned with at least a portion of the through hole in the backing plate and comprising a retaining flange that is detachably coupled to the backing plate by press contact when the backing plate is coupled to the chamber liner.
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46. A plasma processing chamber comprising:
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a chamber wall having an optical viewing window; a chamber liner having a liner hole that is substantially aligned with said viewing window to permit viewing an interior of the chamber through the viewing window and liner hole; and an optical window deposition shield substantially aligned with said viewing window and liner hole, the optical viewing window deposition shield comprising a backing plate having a through hole, a honeycomb structure comprising a plurality of adjacent cells configured to allow optical viewing through the honeycomb structure, each cell having an aspect ratio of length to diameter sufficient to impede a processing plasma from traveling through the full length of the cell, and a coupling device configured to couple the honeycomb structure to the backing plate such that the honeycomb structure is aligned with at least a portion of the through hole in the backing plate and comprising at least one retaining pin fixed to the backing plate and configured to engage at least one cell of the honeycomb structure when the honeycomb structure is pressed over the at least one retaining pin. - View Dependent Claims (47)
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Specification