Patent ID: 11971144
Assignee: TOKYO ELECTRON LIMITED
Field: Surface technology, coating (Chemistry)
Classification: CPC C  F | IPC C  F

Claim 0:
1. A processing apparatus comprising: a processing container configured to accommodate a substrate; a storage tank connected to the processing container via a gas supply pipe; a pressure sensor configured to detect a pressure in the storage tank; a valve provided in the gas supply pipe between the processing container and the pressure sensor of the storage tank; and a controller configured to control an opening degree of the valve in an open state based on the pressure in the storage tank detected by the pressure sensor to make a drop amount of the pressure in the storage tank become equal to a set discharge pressure of a gas supplied from the storage tank to the processing container through the valve, wherein the controller is configured to control the opening degree of the valve in a first mode for fixing the valve to a constant opening degree, and subsequently control the opening degree of the valve in a second mode for controlling the opening degree of the valve to make the drop amount of the pressure in the storage tank become equal to the set discharge pressure.