Patent ID: 11887868
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  B | IPC B  H

Claim 4:
5. The method of claim 4,
wherein the contact portion between the upper vessel and the lower vessel is where the upper vessel and the lower vessel contact each other in the closed position, and the substrate processing apparatus further comprises a first protective layer on the contact portion,
wherein the first protective layer is disposed between a bottom surface of the upper vessel and a top surface of the lower vessel in the closed position,
wherein the top surface of the lower vessel is flat,
wherein the first protective layer contacts a portion of the bottom surface of the upper vessel and a portion of the top surface of the lower vessel in the closed position, and
wherein the portion of the bottom surface of the upper vessel and the portion of the top surface of the lower vessel constitute the contact portion.