Patent ID: 6557162
Filing Date: 2003-04-29
Classification: G03F,H01J

Abstract:
A method for creating a lithography reticle from an integrated circuit (IC) layout data file, the method comprising:identifying a plurality of critical layout features in the IC layout data file; defining a plurality of halo regions, each of the plurality of halo regions having an inner perimeter and an outer perimeter, the inner perimeter of each of the plurality of halo regions being defined by the outer perimeter of a corresponding one of the plurality of layout features, and the inner perimeter and the outer perimeter of each of the plurality of halo regions being substantially parallel; and performing an operation on the lithography reticle using a first set of parameters and a second set of parameters, the first set of parameters being associated with the plurality of critical layout features and the plurality of halo regions, the second set of parameters being associated with the IC layout data file not including the plurality of critical layout features and the plurality of halo regions, the first set of parameters being different from the second set of parameters.