Patent ID: 9455122
Filing Date: 2016-09-27
CPC Classification: B82Y,H01J

Claim Text:
1. A modulation device for use in a charged particle lithography system adapted to generate charged particle beamlets, the modulation device arranged for modulating the charged particle beamlets in accordance with pattern data and comprising: a plate-like body; an array of beamlet deflectors arranged on the plate-like body for deflecting the beamlets; a plurality of power supply terminals for supplying at least two different voltages; a plurality of control circuits arranged on the plate-like body to receive the pattern data and supply corresponding control signals to the beamlet deflectors, wherein the control circuits are fed by the plurality of power supply terminals; and a conductive slab arranged to supply electrical power to one or more of the power supply terminals, wherein the body of the modulation device is divided into an elongated beam area and an elongated non-beam area positioned adjacent to the beam area so that a long edge of the beam area borders a long edge of an adjacent non-beam area, wherein the beamlet deflectors are arranged in the beam area, wherein the control circuits are located in the non-beam area for providing control signals to the beamlet deflectors; and wherein the conductive slab is connected to the one or more of the power supply terminals in the non-beam area, the conductive slab comprising a plurality of thin conductive plates.