Patent ID: 8698998
Filing Date: 2014-04-15
Classification: G03F

Abstract:
1. An exposure apparatus, comprising: a radiation system that supplies a beam of radiation; a substrate table that supports a substrate coated with a resist; a liquid supply system which supplies a liquid from a supply port; a projection system that projects a patterned beam of radiation onto the substrate through the liquid supplied from the supply port during an exposure process; and a controller that controls the radiation system and the substrate table to cause the exposure process and a cleaning process to be performed at different times, wherein at least a part of the substrate table that comprises a sensor is coated with a coating, the coating comprising a metal oxide or a photocatalyst, and the coating is exposed to the liquid supplied from the supply port, and a cleaning beam is supplied to the substrate table through a liquid when the substrate coated with the resist is not supported by the substrate table in order to clean the substrate table during the cleaning process.