Patent ID: 8517363

Claim:
An XY stage device having an X-axis movable body which moves in an X-axis direction on a platen, and a Y-axis movable body which moves in a Y-axis direction on the platen and guides the movement of the X-axis movable body in the X-axis direction, comprising: a pair of actuators which is provided so as to be separated from each other in the X-axis direction, and drives the Y-axis movable body in the Y-axis direction; a detector which detects a yawing angle that is the angle of the Y-axis movable body in a rotational direction around a Z-axis; a controller which controls the driving of the pair of actuators on the basis of the yawing angle detected by the detector; and a pair of supporters which supports the Y-axis movable body on the platen, wherein one of the pair of supporters is a guide which is a contact type which supports and guides the movement of the Y-axis movable body so as to come into contact with the platen in the Y-axis direction, and the other of the pair of supporters is an air pad which supports the Y-axis movable body in non-contact with the platen.