Patent ID: 7372547
Filing Date: 2008-05-13
Classification: G03F

Abstract:
1. A method of forming a pattern on a substrate, the method comprising: providing a target substrate having formed thereon a photoimageable layer; providing a mirror array comprising a plurality of movable mirrors that can be configured to generate a phase shift optical image pattern; configuring the mirror array to generate a single phase shift optical image pattern having a background pattern; a line pattern; and an assist feature pattern; illuminating the mirror array with off-axis light that is directed onto the mirror array from an angle other than normal to a plane of the mirror away to generate said single phase shift optical image pattern producing the background pattern, the line pattern, and the assist feature pattern and wherein the off-axis light is comprised of substantially of non-zero order light; and exposing the target substrate to said phase shift optical image pattern to transfer a desired exposure pattern onto the photoimageable layer.