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 11:
12. 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:
input piping on a lower surface of the immersion hood apparatus;
output piping on the lower surface of the immersion hood apparatus; and
extractor piping configured to attract and remove any liquid that is outside of the immersion hood apparatus, wherein the extractor piping has a pair of extractor piping segments respectively on opposite sides of the immersion hood apparatus and between which the input piping and the output piping are arranged, and wherein the extractor piping segments extend into the immersion hood apparatus laterally towards each other from the lower surface of the immersion hood apparatus and have individual diameters that increase along their lengths away from the lower surface.