Patent ID: 8389964
Filing Date: 2013-03-05
Classification: H01J

Abstract:
1. An ion implanting apparatus comprising: an electrostatic accelerating tube for causing an ion beam extracted from an ion source to have a desirable energy, and deflecting the ion beam to be incident on a target, the electrostatic accelerating tube including deflecting electrodes provided to interpose the ion beam therebetween, wherein the deflecting electrodes comprise a first deflecting electrode and a second deflecting electrode to which different electric potentials from each other are set, wherein the second deflecting electrode is provided on a side where the ion beam is to be deflected and includes an upstream electrode provided on an upstream side of the ion beam and a downstream electrode provided apart from the upstream electrode toward a downstream side, wherein an electric potential of the upstream electrode and an electric potential of the downstream electrode are independently set from each other, wherein a deflecting center position of the ion beam is not changed greatly as compared with a case in which an acceleration/deceleration of the ion beam is not carried out, wherein the first deflecting electrode and the upstream electrode are extended in parallel with a traveling direction of the ion beam which is not deflected, and the downstream electrode is extended in parallel with a traveling direction of the ion beam which is deflected.