Patent ID: 7507960
Filing Date: 2009-03-24
Classification: B82Y,H01J,H01L,Y10T

Abstract:
1. A chamber for exposing a workpiece to charged particles propagated along a path, the chamber comprising: a charged particle source configured to generate a stream of charged particles; a collimator configured to collimate and direct the stream of charged particles from the charged particle source along an axis of propagation; a beam digitizer configured to create temporally and spatially resolved digital flashes comprising groups including at least one charged particle by adjusting longitudinal spacing between the charged particles along the axis of propagation; a deflector configured to deflect said digital flashes transversely to the direction of propagation, the deflector in said path between the collimator and the deflector; an objective lens assembly configured to demagnify said digital flashes or one or more groups of said digital flashes, the deflector in said path between the beam digitizer and the objective lens assembly; and a workpiece stage configured to hold a workpiece, the objective lens assembly between the deflector and the workpiece stage.