Semiconductor fabricating apparatus, method for controlling oxyg

Coating apparatus – Gas or vapor deposition – With treating means

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Details

118719, 118715, 432241, 414937, 414939, C23C 1600

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active

057359610

ABSTRACT:
A semiconductor fabricating apparatus comprises a reaction tube defining a space for heat treating a silicon wafer, heater means disposed to extend around the reaction tube, a load-lock chamber connected to the reaction tube by means of a gate valve, a supply pipe communicating with the load-lock chamber for supplying an inert gas and a gas including oxygen thereto, an oxygen concentration meter, an inert gas flow rate adjuster and an oxygen flow rate regulator. Based on the results detected by the oxygen concentration meter the flow rate of the inert gas and the gas including oxygen are controlled by means of the flow rate adjuster and the flow rate regulator to maintain the oxygen concentration within the load-lock chamber at a desired value.

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