Patent ID: 8064037
Filing Date: 2011-11-22
Classification: G03F

Abstract:
1. An exposure apparatus comprising: a projection optical system having an optical member via which an exposure light is irradiated onto a substrate to expose the substrate; a liquid supply system including a supply port through which a liquid is supplied onto the substrate; a liquid recovery system including a recovery port through which the liquid having been supplied onto the substrate is recovered from above the substrate; and a controller that controls the liquid supply system and the liquid recovery system such that (i) when the exposure light is being irradiated onto an image plane of the projection optical system, the liquid recovery system does not perform recovery of the liquid and the liquid supply system performs the supply of the liquid onto the substrate, and (ii) during at least some times when the exposure light is not being irradiated onto the image plane of the projection optical system, the liquid recovery system performs recovery of the liquid and the liquid supply system simultaneously performs the supply of the liquid onto the substrate.