Patent ID: 7005657
Filing Date: 2006-02-28
Classification: H01J

Abstract:
1. An ion implanter, comprising: a source of an ion beam having a terminal ion beam portion traveling along a beam path and being stationary during an implantation operation; an end station operative to scan a semiconductor wafer across the stationary terminal ion beam portion of the ion beam during the implantation operation; beam deflection apparatus being operative (1) in response to a first beam deflection voltage in a first operating condition, to direct the ion beam onto the beam path such that the terminal ion beam portion strikes the semiconductor wafer, and (2) in response to a second beam deflection voltage in a second operating condition, to direct the ion beam away from the beam path such that the terminal ion beam portion does not strike the semiconductor wafer; and beam control circuitry operative during the second operating condition to transition the ion implanter to the first operating condition by rapidly switching from the second beam deflection voltage to the first beam deflection voltage.