Patent ID: 9690205
Date: 2017-06-27
CPC Classifications: G03F,Y10T

Claim:
1. An exposure apparatus that exposes an object with an energy beam via a projection optical system and a liquid, the apparatus comprising: a frame member that supports the projection optical system; a base member having a surface that is substantially parallel to a predetermined plane orthogonal to an optical axis of the projection optical system; a first movable body and a second movable body each located on the base member and having a holder to hold the object; a local liquid immersion device that has a nozzle surrounding an optical element of the projection optical system, and forms a liquid immersion area under the projection optical system with the liquid, the optical element being in contact with the liquid; a drive system that has a planar motor having a stator located at the base member and a mover located at the first and the second movable bodies, and moves the first and the second movable bodies, severally, from one of an exposure position and an exchange position to the other, in the exposure position exposure of the object being performed via the projection optical system and the liquid of the liquid immersion area, the exchange position being different in position from the exposure position in a first direction within the predetermined plane, and in the exchange position exchange of the object being performed on the first movable body or the second movable body that has been moved to the exchange position; an encoder system that has a plurality of head members each irradiating a measurement beam to a grating section having a reflection-type two-dimensional grating, and measures positional information of the first and the second movable bodies, the grating section being located at one of the frame member and the first and the second movable bodies, and the plurality of head members being located at the other of the frame member and the first and the second movable bodies; a measurement system distinct from the encoder system and located at the frame member, that measures positional information of the object at a measurement position that is different in position from the exposure position in the first direction; and a controller coupled to the drive system, that controls driving of the first and the second movable bodies based on the positional information measured by the encoder system, wherein a cable is connected to the first movable body from one side in a second direction orthogonal to the first direction within the predetermined plane, and another cable is connected to the second movable body from the other side in the second direction, the controller moves the first and the second movable bodies, severally, from the exchange position that is different from the measurement position to the exposure position via the measurement position, when moving one of the first and the second movable bodies from the exchange position to the exposure position via the measurement position, the controller relatively moves the first and the second movable bodies so that the one movable body moves closer to the other of the first and the second movable bodies that faces the projection optical system, and the controller also moves the first and the second movable bodies that are closer together with respect to the nozzle so that the one movable body faces the projection optical system in place of the other movable body while substantially maintaining the liquid immersion area under the projection optical system, and to move the first and the second movable bodies, severally, from the exposure position to the exchange position, the controller moves the first movable body on one side of the exposure position in the second direction and also moves the second movable body on the other side of the exposure position in the second direction.