Patent ID: 8704998

Claim:
A device manufacturing method comprising: providing a liquid to substantially only a localized area of a surface of a substrate, of a substrate table, or of both, to at least partly fill a space between a projection system and the substrate, the substrate table, or both, the localized area being less than the area of the surface of the whole substrate, wherein the supplied liquid is confined to the localized area, while in normal use during projection of the patterned beam, in a controlled manner except for uncontrolled escaping liquid, and wherein at least a portion of the surface of the substrate is not in contact with the escaping liquid; projecting a patterned beam of radiation through the liquid onto a target portion of the substrate using the projection system; collecting uncontrolled liquid escaping from the localized area with a barrier, the barrier surrounding and laterally spaced apart from the substrate and positioned outwardly of a drainage ditch surrounding an outer peripheral edge of the substrate; and removing liquid from the barrier using a low pressure supply with an outlet in the barrier.