Patent ID: 7997567
Filing Date: 2011-08-16
Classification: G03F,H01L

Abstract:
1. A stage apparatus, comprising: a holding member configured to hold a subject; an elevation supporting member configured to support the holding member so that the holding member can move up and down; a rotation supporting member configured to support the elevation supporting member so that the elevation supporting member can be rotated with respect to a Z axis, said rotation supporting member being in a plate shape and substantially parallel to the holding member; a Z axis driving part configured to elevate the holding member in a Z axial direction; and a bearing provided to the rotation supporting member; wherein the Z axis driving part is directly located on the rotation supporting member and makes the holding member move up and down relative to the rotation supporting member, wherein the holding member includes a Z axis member, the Z axis member being engaged with a guide hole forming part having a non-circular shape configuration and formed in the center of a lower surface of the holding member so as to move up and down, and wherein the elevation supporting member includes a Z axis guide part and a brim part, the Z axis guide part being engaged to a center portion of the brim part rotatably supported by the bearing so as to rotate together with the brim part.