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

Claim 0:
1. A method of cleaning a plasma processing apparatus, the method comprising:
disposing a first dummy substrate at a first position with respect to a stage inside a 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 a 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.