Patent ID: 11865590
Assignee: TOKYO ELECTRON LIMITED
Field: Semiconductors (Electrical engineering)
Classification: CPC B  H | IPC B  H

Claim 0:
1. A processing container cleaning method comprising:
spraying gas from a spray port of a gas nozzle arranged within a processing container;
causing vertical shock waves, generated by spraying the gas from the gas nozzle, to collide with a surface of a collision board arranged within the processing container;
blowing an airflow, generated by the vertical shock waves colliding with the surface of the collision board, onto an inner wall surface of the processing container; and
removing particles adhering to the inner wall surface of the processing container, by blowing the airflow onto the inner wall surface of the processing container,
wherein the method further comprises:
controlling the gas nozzle to move in a radial direction of a substrate holder that is configured to hold a substrate arranged within the processing container between a position directly above a center of the substrate holder and a position directly above an outer periphery of the substrate holder.