| 摘要 |
In a particle-beam projection processing apparatus for irradiating a target by a beam of energetic electrically charged particles, including an illumination system, a pattern definition system for positioning an aperture arrangement composed of apertures transparent to the energetic particles in the path of the illuminating beam, and a projection system to project the beam onto a target, there is provided at least one plate electrode device, which has openings corresponding to the apertures of the pattern definition system and including a composite electrode composed of a number of partial electrodes being arranged non-overlapping and adjoining to each other, the total lateral dimensions of the composite electrode covering the aperture arrangement of the pattern definition system. The partial electrodes can be applied different electrostatic potentials.
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