Patent ID: 11953824
Assignee: D2S, INC.
Field: Optics (Instruments)
Classification: CPC G  H | IPC G

Claim 0:
1. A method for fracturing a pattern to be exposed on a surface using variable shaped beam (VSB) lithography, the method comprising:
inputting an initial pattern;
calculating a first substrate pattern from the initial pattern;
overlaying the initial pattern with a two-dimensional grid, wherein an initial set of VSB shots are formed by a union of the initial pattern with locations on the grid;
merging two or more adjacent shots in the initial set of VSB shots to create a larger shot in a modified set of VSB shots;
calculating a calculated pattern to be exposed on the surface with the modified set of VSB shots; and
calculating a second substrate pattern from the calculated pattern to be exposed on the surface.