Patent ID: 7982195

Claim:
For use with an ion implanter having an ion source and an implantation chamber; apparatus comprising: a) beam forming structure that scans ions from side to side to produce a thin ion beam moving into an ion implantation chamber; b) a workpiece support for positioning a workpiece within the implantation chamber; c) a drive for moving the workpiece support back and forth through the thin ion beam to effect controlled ion beam processing of said workpiece; and d) a control including: i) a first control output coupled to the beam forming structure that limits an extent of side to side scanning to reduce a width of the ion beam to a width less than a width of the workpiece thereby limiting ion beam processing of the workpiece to a specified region of the workpiece; and ii) a second control output coupled to the drive to control back and forth movement of the workpiece to a specified amount; said first and second control outputs causing the ion beam to impact less than an entire surface of the workpiece.