Patent ID: 11920240
Assignee: TOKYO ELECTRON LIMITED
Field: Semiconductors (Electrical engineering)
Classification: CPC C  H  B | IPC B  C

Claim 14:
15. A substrate processing apparatus configured to process a substrate, comprising:
a functional component constituting a part of the substrate processing apparatus;
a nozzle, provided on a surface of the functional component, allowing a gas to pass therethrough;
a nozzle flow path which is connected to the nozzle of the functional component and through which the gas flows;
a flow rate sensor configured to measure a flow rate of the gas flowing through the nozzle flow path; and
a controller configured to make a determination as to a state of a distance between an interfering object and the functional component based on a measurement result obtained by the flow rate sensor,
wherein the functional component is a surrounding member disposed within a substrate processing unit configured to process the substrate while holding the substrate, and configured to surround the substrate when the substrate is processed, and
the nozzle is provided on a surface of the surrounding member,
wherein the controller determines, as the determination, whether or not the interfering object and the surrounding member are in contact with each other, and
the controller determines that the interfering object and the surrounding member are in contact with each other when the measurement result of the flow rate sensor meets a preset condition.