Patent ID: 7173716
Filing Date: 2007-02-06
Classification: G03F

Abstract:
1. A method of manufacturing a device by use of an exposure apparatus which includes a reticle stage and exposes a substrate to extreme ultraviolet light via a reflective reticle held by the reticle stage, said method comprising step of: detecting, by use of a detection unit, a position of a first reference mark and a position of a second reference mark relative to the detection unit, said detecting step including sub-steps of: i. detecting light that has been reflected off the first reference mark on the reticle stage positioned at a first position by use of the detection unit, and ii. detecting light that has been reflected off the second reference mark on the reticle stage positioned at a second position that differs from the first position by use of the detection unit, and positioning the reticle stage based on the detected position of the first reference mark and the detected position of the second reference mark; exposing the substrate to extreme ultraviolet light via the reflective reticle held by the positioned reticle stage; developing the exposed substrate; and processing the developed substrate in order to manufacture the device.