Patent ID: 11923220
Assignee: TOKYO ELECTRON LIMITED
Field: Measurement (Instruments)
Classification: CPC H  B  G | IPC B  G  H

Claim 11:
12. A substrate processing apparatus comprising:
a processing chamber;
a substrate holder disposed in the processing chamber and configured to hold a substrate;
a processing liquid supply configured to supply a processing liquid to the substrate held in the substrate holder;
an infrared camera configured to acquire an infrared image of the processing chamber; and
a controller configured to detect at least a state of the processing liquid based on the infrared image and monitor presence/absence of an abnormality;
wherein the controller records information on the presence/absence of an abnormality, in a storage, and
wherein the controller records ejection start time information indicating when the ejection of the processing liquid from the processing liquid supply starts, and ejection stop time information indicating when the ejection of the processing liquid from the processing liquid supply stops, in the storage as information on the presence/absence of an abnormality.