Patent ID: 6930316
Filing Date: 2005-08-16
Classification: H01J

Abstract:
1. An ion implantation system comprising: (a) plural stationary ion sources for generating ion beams which include a multi-charged ion source for implanting ions at high energy and a high current ion source for implanting ions at a high dosage level; (b) a mass analyzing portion which has a magnetic field and which is connected to said plural stationary ion sources, and which has means for changing the strength of said magnetic field in order to select one of said plural stationary ion sources; (c) an ion acceleration portion for accelerating a beam of ions selected by said mass analyzing portion; (d) an ion beam processing portion which comprises, (e) an end station chamber in which said semiconductor substrate is placed; and (f) stencil mask means arranged relative to said semiconductor substrate in said end station chamber and which defines at least one region to be implanted on said semiconductor substrate, whereby; (i) when said mass analyzing portion selects said multi-charged ion source, said focus point changing lens focuses said ion beam onto said semiconductor substrate, said beam scanner scans said ion beam, and said collimator leads an axis of said scanned ion beam perpendicularly onto said semiconductor substrate and in parallel with any other scanned beams, and thereby said ion beams are scanned on said at least one region of said semiconductor substrate in parallel, or (ii) when said mass analyzing portion selects said high current ion source, said focus point changing lens focuses said ion beam onto said focus region of said collimator at the upstream side of said collimator, said ion beam is diverged after focusing, and said collimator collimates the diverged ion beam to be a parallel ion beam, and leads said parallel ion beam onto selected of said at least one specific regions of said semiconductor substrate simultaneously, or as a spot implantation.