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Plasma CVD apparatus for large area CVD film

  • US 20040083967A1
  • Filed: 08/26/2003
  • Published: 05/06/2004
  • Est. Priority Date: 11/10/1999
  • Status: Active Grant
First Claim
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1. A plasma CVD apparatus comprising:

  • first and second electrodes;

    neutral gas introduction pipes; and

    a plasma confining electrode interposed between said first and second electrodes to separate a plasma generation region and a substrate processing region, wherein said plasma confining electrode has a hollow structure defined by an upper electrode plate, and a lower electrode plate, and has gas diffusing plates provided in the hollow structure, and has radical passage holes provided to supply radicals from said plasma generation region into said substrate processing region while isolating from a neutral gas, said plasma confining electrode is connected to said neutral gas introduction pipes, and a plurality of neutral gas passage holes are provided for each of said lower electrode plate and said gas diffusing plates to supply said neutral gas into said substrate processing region, and a total opening area of said plurality of neutral gas passage holes in said gas diffusing plate on a side of said upper electrode plate is smaller than that of said plurality of neutral gas passage holes in said gas diffusing plate on a side of said lower electrode plate.

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