Patent ID: 11972957
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Surface technology, coating (Chemistry)
Classification: CPC H  C  F | IPC C  F  H

Claim 18:
19. A semiconductor processing tool, comprising:
a process chamber body;
a gas inlet line connected to the process chamber body and configured to provide a process gas to the process chamber body;
a chuck provided within the process chamber body and configured to support a semiconductor device to be processed by the semiconductor processing tool;
a chuck vacuum line connected to the chuck and configured to apply a vacuum to the chuck to retain the semiconductor device against the chuck;
a main pumping line connected to the process chamber body and configured to remove the process gas from the process chamber body after the semiconductor device is processed,
wherein an end portion of the chuck vacuum line is provided within the main pumping line,
wherein an orientation of the end portion of the chuck vacuum line is approximately parallel to an orientation of the main pumping line to prevent buildup of processing byproduct on interior walls of the main pumping line;

a gas flow accelerator provided within the main pumping line and around the end portion of the chuck vacuum line,
wherein the gas flow accelerator comprises a tapered cylindrical body portion; and

a pump, connected to the main pumping line, configured to:
cause the process gas to be removed from the process chamber body through the main pumping line, and
cause the vacuum to be applied to the chuck via the chuck vacuum line.