Patent ID: 6741330
Filing Date: 2004-05-25
Classification: G03F

Abstract:
Exposure device which comprises:a mask alignment mark microscope for determining the location of mask alignment marks formed on a mask; a workpiece alignment mark microscope for determining the location of workpiece alignment marks formed on a workpiece; a workpiece carrier which has a device for movement in X-Y-&thgr; directions; and a controller means for controlling positioning of the mask relative to the workpiece from position information of the mask alignment marks which has been determined by the mask alignment mark microscope, and position information of the workpiece alignment marks which has been determined by the workpiece alignment microscope, and for controlling exposure of a mask pattern formed on the mask onto a workpiece seated on the workpiece carrier, wherein the mask alignment mark microscope is located in the workpiece carrier so as to be movable in unison with the workpiece carrier, wherein a reference mark is located at a position which is at a light incidence part of the mask alignment mark microscope, the location of which is determinable by the mask alignment mark microscope and the workpiece alignment mark microscope.