Patent ID: 6188074
Filing Date: 2001-02-13
Classification: B82Y,H01J

Abstract:
A charged particle beam exposure apparatus for forming a predetermined exposure pattern on a specimen using a charged particle beam, comprising:a column with the interior thereof held in vacuum;charged particle beam generating means arranged in said column for generating a charged particle beam;a blanking aperture array arranged in a light path of the charged particle beam from said charged particle beam generating means in said column, and including a plurality of apertures for shaping said charged particle beam and two-dimensionally arranged electrode sets arranged around each of said apertures, said charged particle beam being shaped according to whether a voltage signal is applied to each electrode or not;a blanking aperture array control circuit arranged outside said column for outputting a voltage signal to be applied to the electrodes of each aperture according to said exposure pattern; anda plurality of blanking aperture signal transmission paths each including a plurality of channels for applying said voltage signal output from said blanking aperture array control circuit to the electrode of each aperture, and extending from outside said column into said column;wherein output impedance of said blanking aperture array control circuit substantially coincides with a first transmission impedance of said blanking aperture signal transmission paths;said apparatus further comprising an auxiliary transmission path including a plurality of channels extending from said electrode of each of said apertures to outside of said column, having a transmission impedance substantially coinciding with said first transmission impedance, and terminating with an impedance substantially coinciding with said transmission impedance.