Patent ID: 11887824
Assignee: TOKYO ELECTRON LIMITED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 18:
19. A plasma processing apparatus, comprising:
a chamber;
a stage provided inside the chamber and configured to mount a first dummy substrate or a second dummy substrate on the stage;
a dry cleaning part configured to dry-clean an interior of the chamber; and
a controller configured to control the dry cleaning part,
wherein the controller controls the dry cleaning part so as to perform: disposing the first dummy substrate at a first position with respect to the stage inside the chamber and performing a first dry cleaning process of cleaning an inside of the chamber with the first dummy substrate disposed at the first position; and disposing the second dummy substrate at a second position with respect to the stage inside the chamber and performing a second dry cleaning process of cleaning the inside of the chamber with the second dummy substrate disposed at the second position,
wherein each of a center of the first position and a center of the second position is located at a different position from a center of the stage in a plan view, and
wherein the first position and the second position are different from each other in a plan view.