Patent ID: 9394607
Filing Date: 2016-07-19
CPC Classification: C23C,H01L

Claim Text:
1. A substrate processing apparatus comprising: a process vessel configured to process a substrate; a process gas supply system configured to supply a process gas into the process vessel; an inert gas supply system configured to supply an inert gas into the process vessel; a seal cap configured to close an opening of the process vessel; and a controller configured to control the process gas supply system and the inert gas supply system, wherein the inert gas supply system comprises: wherein the controller is configured to control the process gas supply system and the inert gas supply system to: supply the inert gas having the flow rate thereof controlled by the flow rate controller to the first supply pipe and the second supply pipe through the third supply pipe; eject the inert gas supplied to the first supply pipe into the process vessel through the first ejection part installed at the center portion of the seal cap; and eject the inert gas supplied to the second supply pipe to the inner wall surface of the opening at the end portion of the process vessel through the second ejection part while the process gas is supplied into the process vessel.