Patent ID: 11869755
Assignee: TOKYO ELECTRON LIMITED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B | IPC B  H

Claim 0:
1. A method for cleaning a substrate processing apparatus, the method comprising:
mounting a protector including a small diameter portion that covers a mounting portion of an electrostatic chuck on which a substrate is mountable, a large diameter portion that is disposed apart from an edge ring disposed on an outer periphery of the mounting portion and has a diameter larger than that of the small diameter portion, and an intermediate portion that is disposed on the small diameter portion and between the small diameter portion and the large diameter portion connecting the small diameter portion and the large diameter portion, on the mounting portion; and
supplying a cleaning gas, thereby removing by-products deposited between the mounting portion and the edge ring,
wherein the large diameter portion is disposed on the intermediate portion,
the small diameter portion has a diameter equal to or smaller than that of an upper surface of the mounting portion,
the intermediate portion has a diameter equal to or smaller than that of the small diameter portion and smaller than that of the large diameter portion, and
a bottom surface of the large diameter portion above a gap between the mounting portion and the edge ring is disposed higher than the upper surface of the mounting portion.