Patent ID: 6337164
Filing Date: 2002-01-08
Classification: B82Y,H01J,Y10S

Abstract:
A method for performing microlithography of a pattern, defined on a reticle and having a minimum linewidth, to a sensitive substrate using a charged particle beam, comprising:(a) illuminating a region of the reticle with a charged-particle illumination beam, passing through an illumination-optical system, to form a patterned beam propagating downstream of the reticle; (b) projecting and focusing the patterned beam, with demagnification, through a projection-optical system onto a corresponding region on a sensitive substrate; (c) determining a minimum linewidth of the pattern defined by the reticle; and (d) controlling the projection-optical system to provide the patterned beam with a beam-edge resolution that is 0.8 to 1.0 times the minimum linewidth of the pattern.