Patent ID: 8405052
Filing Date: 2013-03-26
Classification: H01J

Abstract:
1. An ion implanter in which when a direction of travel of a central orbit of an ion beam is an x direction and two directions orthogonal to the x direction are a y direction and a z direction, respectively, a ribbon-like ion beam whose dimension in the y direction is larger than its dimension in the z direction is applied to a target, the ion implanter comprising: a beam deflector having a pair of magnetic poles facing each other in the z direction, the beam deflector being configured to deflect, by a magnetic field, an overall shape of the ion beam so as to be substantially parallel to the x direction; insulating members provided on the respective magnetic poles; at least one pair of electrodes provided on the insulating members so as to face each other across a space through which the ion beam passes in the z direction, having a dimension longer than the dimension of the ion beam in the y direction, and constituting an asymmetrical einzel lens in the direction of travel of the central orbit of the ion beam; and at least one power source configured to apply a voltage to the pair of electrodes.