Patent ID: 9256137
Filing Date: 2016-02-09
CPC Classification: G03F

Claim Text:
1. An exposure apparatus that exposes a substrate with exposure light through a first liquid, comprising: a first member that is disposed at least in a part of a periphery of an optical path of the exposure light, and has a first face that faces an upper face of an object through a first gap and holds the first liquid between the upper face of the object and the first face; a second member that is disposed at an outer side of the first face with respect to the optical path and has a second face facing the upper face of the object through a second gap; a first supply port that is disposed at an outer side of the second face with respect to the optical path and supplies a second liquid biased from the second face toward the upper face of the object; and a first suction port that is disposed between the first face and the second face, and suctions at least part of gas in an outer space of the second member with respect to the optical path via a gap between the second face and the upper face of the object, wherein the first suction port, while suctioning the second liquid, suctions the gas in the outer space to keep the second liquid from dropping down from the second face to the upper face of the object and to maintain a gas passage between the second face and the upper face of the object.