Patent ID: 9547234
Date: 2017-01-17
CPC Classifications: B82Y,G03F

Claim:
1. An imprint lithography apparatus comprising: an imprint template arrangement configured to imprint a pattern into an amount of imprintable medium provided to a surface of a substrate; a substrate holder configured to hold the substrate; and a chamber having an inlet to allow gas to flow into the chamber and an outlet to allow gas to flow out of the chamber, and the chamber having a top surface and a bottom surface, contamination within the chamber, in use, falling to the bottom surface of the chamber, wherein the imprint template arrangement and the substrate holder are located within the chamber, the chamber, in use, being arranged to contain a gaseous atmosphere, and wherein the outlet forms part of the bottom surface of the chamber and is spaced, in a direction perpendicular to the surface of the substrate, from and below a bottom of the substrate holder.