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

Claim 6:
7. A substrate processing apparatus comprising a protecting member and a cleaning gas supply, the protecting member comprising:
a small diameter portion mounted on a mounting portion of an electrostatic chuck provided in the substrate processing apparatus, when cleaning the substrate processing apparatus, the small diameter portion being configured to cover the mounting portion;
a large diameter portion disposed apart from an edge ring on an outer periphery of the mounting portion and having a diameter larger than that of the small diameter portion; and
an intermediate portion 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,
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.