Patent ID: 6463119
Filing Date: 2002-10-08
Classification: G03F

Abstract:
An exposure method using X-rays as an exposure beam, said method comprising:a step of setting, in an optical path, a light blocking member for limiting a view angle of exposure by blocking a portion of the exposure beam; a step of setting in the view angle an X-ray transfer mask having an attenuation area for attenuating the exposure beam at an outer periphery of a pattern to be transferred; a step of setting a view angle of exposure on the mask by positioning the light blocking member such that an inner edge of the attenuation area of the X-ray transfer mask overlaps a penumbra of the exposure beam provided by the light blocking member on the mask; and a step of exposing a photosensitive substrate to the pattern to be transferred, formed on the mask in the view angle, to transfer the pattern onto the substrate.