Patent ID: 11873556
Assignee: TOKYO ELECTRON LIMITED
Field: Surface technology, coating (Chemistry)
Classification: CPC C  F  G  H | IPC C  F  G  H

Claim 13:
14. A film forming apparatus comprising:
a processing container; and
a raw material supply apparatus configured to supply a raw material gas into the processing container,
wherein the raw material supply apparatus includes:
a raw material tank containing the raw material gas;
a raw material supply path through which the raw material gas is supplied from the raw material tank into the processing container;
a storage tank provided in the raw material supply path and configured to store the raw material gas;
a valve provided in the raw material supply path;
a pressure sensor configured to detect an internal pressure of the storage tank;
a raw material exhaust path connected to the raw material supply path downstream of the storage tank and through which the raw material gas in the raw material supply path is exhausted;
an opening degree adjustment mechanism provided in the raw material exhaust path and configured to control the internal pressure of the raw material supply path and the storage tank based on an adjustment of an opening degree of the opening degree adjustment mechanism; and
a controller configured to perform the adjustment of the opening degree of the opening degree adjustment mechanism based on a value detected by the pressure sensor.