Patent ID: 7947431

Claim:
A method of manufacturing a device, the method comprising: providing a lithography mask including a substrate having a first region and a second region, a polarization rotating material being disposed over at least the first region of the substrate, the polarization rotating material adapted to alter a polarization and a phase of light in at least the first region, the substrate being recessed in the second region, the lithography mask including a pattern for a plurality of first features in the first region and a pattern for a plurality of second features in the second region, and the lithographic mask including a phase shifting compensating feature disposed in at least portions of the second region adapted to compensate for the altered phase of light due to the polarization rotating material in the first region; exposing a layer of photosensitive material on a workpiece to light using the lithography mask as a mask, forming the plurality of first features and the plurality of second features in the layer of photosensitive material, wherein the polarization rotating material of the lithography mask alters a polarization of the light in at least the first region; and developing the layer of photosensitive material.