Patent ID: 7151271
Filing Date: 2006-12-19
Classification: B82Y,H01J

Abstract:
1. A system for concentrating high energy particles on a predetermined area on a target semiconductor substrate, comprising: a high energy source for generating a predetermined amount of high energy particles; an electro-magnetic radiation source for generating one or more low energy beams; and a mask set exposed to the high energy source and the electro-magnetic radiation source, the mask set having at least one mask with at least one alignment area and at least one mask target area thereon, the mask target area passing more high energy particles than any other area of the mask, wherein the mask is aligned with the predetermined target semiconductor substrate using the low energy beams, wherein the high energy particles generated by the high energy source pass through the mask target area to land on the predetermined area on the target semiconductor substrate, and wherein the predetermined area receives the high energy particles with a collective energy exceeding a predetermined threshold; wherein the predetermined threshold is in a range between 1 to 5 MeV.