Patent ID: 8581217
Filing Date: 2013-11-12
Classification: H01J

Abstract:
1. A method for monitoring ion implantation, comprising: providing an ion beam and a workpiece; implanting said workpiece by said ion beam and generating a profile having a plurality of signals relevant to respectively a plurality of relative positions between said ion beam and said workpiece when said ion beam is scanned through said workpiece, wherein said profile comprises a higher portion, a gradual portion and a lower portion, a width of said ion beam is acquired by measuring a span of said gradual portion when a relative moving direction between said ion beam and said workpiece coincides with a minor axis of said ion beam and crosses a diameter of said workpiece, and a height of said ion beam is acquired by measuring a span of said gradual portion when said relative moving direction coincides with a major axis of said ion beam and crosses said diameter of said workpiece; and analyzing said profile without referring to a pre-determined profile, wherein at least one of the following of said ion beam is monitored: a beam contour of said ion beam and a current distribution of said ion beam along an ion beam radial cross-section.