Abstract: An immersion lithographic apparatus having a fluid handling structure, the fluid handling structure configured to confine immersion fluid to a region and including: a meniscus controlling feature having an extractor exit on a surface of the fluid handling structure; and a gas knife system outwards of the extractor exit and including passages each having an exit, the passages having a plurality of first passages having a plurality of corresponding first exits on the surface, and a plurality of second passages having a plurality of corresponding second exits outwards of the first exits on the surface, wherein the surface faces and is substantially parallel to a top surface of a substrate during exposure, and the first exits and the second exits are arranged at a greater distance from the substrate than the extractor exit.
Type:
Application
Filed:
September 13, 2019
Publication date:
January 2, 2020
Applicant:
ASML NETHERLANDS H.V.
Inventors:
Erik Henricus Egidius Catharina EUMMELEN, Giovanni Luca GATTOBIGIO, Johannes Cornelis Paulus MELMAN, Han Henricus Aldegonda LEMPENS, Miao YU, Cornelius Maria ROPS, Ruud OLIESLAGERS, Arturnç ULUCAN, Theodorus Wilhelmus POLET, Patrick Johannes Wilhelmus SPRUYTENBURG