Patent ID: 11860547
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC G  F  H | IPC F  G  H

Claim 0:
1. A process tool, comprising:
a lithography apparatus over a wafer chuck; and
an immersion hood apparatus over the wafer chuck and laterally around the lithography apparatus, wherein the immersion hood apparatus comprises:
output piping on a lower surface of the immersion hood apparatus and configured to contain a liquid to a containment area between the lithography apparatus and the wafer chuck; and
extractor piping configured to attract and remove any liquid outside the containment area via an extractor opening of the extractor piping, which is at a corner defined by the lower surface of the immersion hood apparatus and an outermost sidewall of the immersion hood apparatus that faces away from the lithography apparatus, wherein the extractor piping is covered by an upper portion of the immersion hood apparatus and is farther from a width-wise center of the immersion hood apparatus than the output piping at the lower surface.