Patent ID: 7074525

Claim:
A method of printing a feature on a substrate using an optical projection system, said method comprising: irradiating a photolithographic mask using a light source, said photolithographic mask having a mask pattern that includes at least one lines and spaces array surrounded by a clear region, the lines and spaces array having a plurality of lines separated from one another by spaces, said photolithographic mask further having a plurality of line features disposed in said clear region, a first one of said line features being in proximity to said lines and spaces array and extending parallel to said lines within said lines and spaces array, and a second one of said line features being in proximity to said lines and spaces array and extending perpendicular to said lines within the lines and spaces array, each of the line features having a line width that is smaller than a minimum resolution of said optical projection system; and projecting light transmitted through said photolithographic mask onto said substrate using said optical projection system.