Patent ID: 9536769
Date: 2017-01-03
CPC Classifications: C23C,G06K,H01J,H01L,H02N,H04N

Claim:
1. A chucking circuit for an electrostatic chuck (ESC), the chucking circuit comprising: one or more chucking electrodes disposed in a dielectric body of the ESC; a plurality of pixel electrodes disposed in the dielectric body; and a chucking circuit comprising the one or more chucking electrodes and the plurality of pixel electrodes, the chucking circuit operable to electrostatically chuck a substrate to a workpiece support surface of the ESC, the chucking circuit having a plurality of secondary circuits, wherein each secondary circuit includes at least one capacitor of a plurality of capacitors, each secondary circuit is configured to independently control an impedance between one of the pixel electrodes and a ground.