Patent ID: 7582396

Claim:
A hybrid phase-shift mask having a cell area and a periphery area, comprising: a transparent film; an attenuated film, arranged on said transparent film; an opaque film, arranged on said attenuated film; a plurality of first transparent regions, constituted by said transparent film within said cell area; a plurality of second transparent regions, constituted by trenches of said transparent film within said cell area, each of the plurality of the second transparent regions being arranged between every two of the plurality of first transparent regions along the x-coordinate; a plurality of first shading regions, constituted by patterned said opaque film and attenuated film within said cell area, and said transparent film, each of the plurality of the first shading regions being arranged between every two of the plurality of first transparent regions along the y-coordinate; a plurality of third transparent regions, constituted by patterned said attenuated film and transparent film within said periphery area; and a plurality of fourth transparent regions, constituted by said transparent film within said periphery area; whereby said first transparent region and second transparent region form the chrome-less phase-shift mask features in x-coordinate, and said first transparent region and first shading region form the alternate PSM in y-coordinate.