Patent ID: 7965382
Filing Date: 2011-06-21
Classification: G03F

Abstract:
1. A method of forming a patterned region on a substrate using a multi-pattern, multi-exposure patterning process comprising: providing a reticle having at least a first pattern and a second pattern that are offset on the reticle; positioning a substrate near the reticle; exposing the substrate to the first and second patterns using the reticle, thereby defining a first region of the substrate exposed by the first pattern and a second region of the substrate exposed by the second pattern; adjusting a position of the substrate relative to the reticle by a distance related to the inverse of the number of patterns on the reticle so as to align the second pattern of the reticle to the first region of the substrate exposed by the first pattern of the reticle; and exposing the substrate to the first and second patterns using the reticle so that the first region of the substrate has been exposed to both the first pattern and the second pattern of the reticle and the second pattern overlaps the first pattern in the first region.