Patent ID: 6573517
Filing Date: 2003-06-03
Classification: G21K,H01J

Abstract:
An ion implantation apparatus, comprising:an ion source; a mass-analyzing magnet which mass-analyzes an ion beam extracted from the ion source; an accelerating/decelerating element which accelerates and decelerates the ion beam at a post-stage; and plural deflecting elements which are arranged additionally between the mass-analyzing magnet and the accelerating/decelerating element; each deflecting element having an operation direction angle and having an operating deflection mode and a non-operating deflection mode both of which modes have a standard beam trajectory according to a regular ion implantation apparatus, and each operation direction angle being determined wherein a final beam trajectory of the ion beam in a predetermined area before being introduced into a wafer substrate is substantially identical in either the operating deflection mode or the non-operating deflection mode.