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Chamber having improved process monitoring window

  • US 6,390,019 B1
  • Filed: 06/11/1998
  • Issued: 05/21/2002
  • Est. Priority Date: 06/11/1998
  • Status: Expired due to Fees
First Claim
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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.

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