Patent ID: 6403973
Filing Date: 2002-06-11
Classification: H01J

Abstract:
An electron beam exposure method of performing exposure according to the deflection of an electron beam while continuously moving a sample table with a sample placed thereon, comprising the following steps:a step for determining displacements of a position of said sample table and a position to apply the electron beam; a step for sampling said displacements in synchronism with shot timing provided to apply the electron beam and determining a first amount of trace deflection for correcting the sampled displacement according to the deflection of the electron beam; a step for setting said first amount of trace deflection as the point of origin and determining a second amount of trace deflection for correcting the amount of a variation from the point of origin in a cycle shorter than a calculation cycle for the first amount of trace deflection; a step for adding said first amount of trace deflection and said second amount of trace deflection to the amount of deflection of an electron beam for graphics exposure; and a step for performing said deflection according to the added deflection data to thereby prevent a glitch noise produced in the deflection of the electron beam.