Patent ID: 6351041
Filing Date: 2002-02-26
Classification: G03F,H01J,H01L

Abstract:
A stage apparatus comprising:a base member; a table member which moves in a plane parallel to a guide plane provided at said base member; a first guide member which guides said table member in a first direction and moves along the guide plane; a second guide member which guides said first guide member in a second direction perpendicular with respect to the first direction; non-contact bearings which provide guidance and support in such a manner that there is no contact between each of said base member, said table member, and said second guide member, and said first guide member; a planar motor constituted by magnets provided at one of either the base member or said table member and electromagnets provided at the remaining one of either said base member or said table member; and a movement control apparatus which controls said planar motor, so that drive force in directions parallel to the guide plane is generated to move said table member.