Patent ID: 6340281
Filing Date: 2002-01-22
Classification: H01L,Y10S

Abstract:
A method for positioning a disk-shaped object, in which a disk-shaped object is supported by a support member which can be rotated about an axis of rotation and moved in a direction perpendicular to the axis of the rotation in a vacuum vessel, and the support member is moved from outside of the vacuum vessel to position the disk-shaped object, said method comprising:extending the support member to the outside of the vacuum vessel through an opening in the vacuum vessel and through an opening in a bellows, one end of the bellows being connected to a surface defining the vacuum vessel opening and the other end being connected to an opening in a bearing support, the support member being spaced from the opening and the bellows to provide sufficient play for movement of the support member in the perpendicular direction, and arranging the support member in a bulkhead portion of said bearing support, said bulkhead portion having a roller bearing for rotation of the support member, said bulkhead portion being connected to the other end of the bellows and closing the opening in said bearing support connected to the other end of the bellows; providing necessary rotation to the support member from the outside of the bulkhead portion via a pair of inside and outside magnetic couplings facing each other on the inside and outside of the bulkhead portion; and moving the support member in the direction perpendicular to the axis of rotation by moving the bearing support in the direction perpendicular to the axis of rotation with respect to the vacuum vessel.