Film-formation apparatus and source supplying apparatus therefor, gas concentration measuring method
First Claim
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1. A film-formation apparatus, comprising:
- a film-formation chamber; and
a source gas supplying apparatus supplying a source gas to said film-formation chamber together with a carrier gas, said source gas supplying apparatus comprising;
a concentration detector detecting a concentration of said source gas; and
a gas flow controller controlling a flow rate of an inert gas added to said carrier gas based on a result of measurement of said concentration of said source gas obtained by said concentration detector.
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Abstract
A film-formation apparatus includes a film-formation chamber and a source gas supplying apparatus supplying a source gas to the film-formation chamber together with a carrier gas, wherein the source gas supplying apparatus includes a concentration detector detecting a concentration of the source gas and a gas flow controller controlling a flow rate of an inert gas added to the carrier gas based on a result of measurement of the concentration of the source gas obtained by the concentration detector.
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Citations
29 Claims
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1. A film-formation apparatus, comprising:
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a film-formation chamber; and
a source gas supplying apparatus supplying a source gas to said film-formation chamber together with a carrier gas, said source gas supplying apparatus comprising;
a concentration detector detecting a concentration of said source gas; and
a gas flow controller controlling a flow rate of an inert gas added to said carrier gas based on a result of measurement of said concentration of said source gas obtained by said concentration detector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A source supplying system of a film-formation apparatus, comprising:
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a concentration detector detecting a concentration of said source gas; and
a gas flow controller controlling a flow rate of an inert gas added to said carrier gas based on a result of measurement of said concentration of said source gas obtained by said concentration detector.
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14. A film-formation apparatus, comprising:
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a film-formation chamber; and
a source gas supplying apparatus supplying a source gas to said film-formation chamber together with a carrier gas via a gas passage in the form of a mixed gas, said source supplying apparatus comprising;
a gas concentration measurement part measuring the concentration of said source gas contained in said mixed gas in said gas passage;
a gas concentration controller connected to said gas passage, said gas concentration controller adding an inert gas to said mixed gas in said gas passage; and
an inert-gas flow-rate controller controlling the flow rate of said inert gas added by said gas concentration controller based on a measured concentration of said source gas obtained by said gas concentration measurement part, said gas concentration measurement part including a manometer for measuring the pressure of said mixed gas in said gas passage, said gas concentration measurement part correcting said measured concentration of said source gas based on a pressure measured by said manometer. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method of detecting a gas concentration, comprising the steps of:
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supplying a mixed gas containing therein a source gas to a flow passage;
measuring the pressure of said mixed gas in said flow passage;
injecting infrared light to said mixed gas in said flow passage;
acquiring an absorption spectrum of said source gas by detecting said infrared light after said infrared light has passed through said mixed gas in said flow passage;
acquiring the concentration of said source gas in said mixed gas by correcting an intensity of said absorption spectrum, said step of correction comprising the step of applying a correction term including therein said pressure. - View Dependent Claims (26, 27, 28, 29)
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Specification