Patent ID: 6277527
Filing Date: 2001-08-21
Classification: G03F

Abstract:
A photolithographic mask comprising:a first image segment having an image segment width, the first image segment imparting a predetermined phase shift with respect to electromagnetic radiation of a predetermined frequency; anda second image segment imparting a phase shift of 180.degree. more or less from an edge of the phase shift of said first image segment with respect to the predetermined electromagnetic radiation,said first and second segments being on a substrate adjacent to each other and positioned such that at an intersection of said predetermined electromagnetic radiation passing through said segments, said electromagnetic radiation passing through said segments is cancelled out by the phase shift of 180.degree. more or less differential between the edges of said first and second image segments causing printable images having a width less than the image segment width to be created below said substrate and between the image segments when exposed to said predetermined electromagnetic radiation.