Patent ID: 7321416

Claim:
A lithographic apparatus, comprising: an illumination system that supplies a beam of radiation; a controllable patterning device comprising an array of individually controllable elements that pattern the beam; a control system that outputs a voltage signal and controls the patterning device; a projection system that projects the patterned beam onto a target portion of a substrate; and a supply channel coupled between the control system and the patterning device, wherein, the patterning device comprises a plurality of cells, each cell comprising a respective one of the individually controllable elements and a respective local control circuit controllable to generate a respective control voltage that determines a configuration of the respective controllable element, the supply channel provides the voltage signal to each cell, the control system provides control signals to the plurality of local control circuits, each local control circuit comprises a charge collector including a logic device, a switching system and an integration circuit, and each local control circuit is responsive to the control signals to generate the respective control voltage from the voltage signal.