Patent ID: 9013673
Filing Date: 2015-04-21
Classification: G03F

Abstract:
1. A lithographic apparatus comprising: a table configured to support a substrate, the table having an upper surface, said upper surface to receive said substrate and a sensor, a target for a sensor, or both; a liquid handling structure configured to provide liquid to a space adjacent the substrate and/or table; a liquid displacement device comprising a gas outlet configured to direct a localized gas flow towards the sensor or target, or both on said upper surface; and a cover attached to an outer edge of the table and extending from the outer edge of the table and away from the upper surface of the table, wherein the liquid displacement device is configured such that liquid is displaced from the sensor or target off the outer edge of the table, and wherein the cover comprises a surface which is contiguous with the upper surface of the table so that, in use, droplets of liquid present on the sensor or target or both are displaced by the localized gas flow from the upper surface to the surface of the cover.