Patent ID: 11961708
Assignee: NUFLARE TECHNOLOGY, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 10:
11. A non-transitory computer-readable storage medium with an executable program stored thereon, wherein the program causes a computer to execute:
processing in which a writing region of a substrate on which a pattern is to be written by causing a deflector to deflect a charged particle beam is virtually divided in a mesh-like manner and a pattern density distribution indicating an arrangement ratio of the pattern is calculated for each mesh region;
processing in which a dose distribution indicating a dose for each mesh region is calculated using the pattern density distribution;
processing in which an exposure amount distribution of the charged particle beam, to which the substrate is exposed, is calculated using the pattern density distribution and the dose distribution;
processing in which a plurality of fogging charged particle amount distributions are calculated by convoluting each of a plurality of distribution functions for fogging charged particles with the exposure amount distribution, the plurality of distribution functions having different distribution centers and radius of influence of a fogging effect from each other;
processing in which a charge amount distribution due to direct charge is calculated using the pattern density distribution, the dose distribution, and the exposure amount distribution, and a plurality of charge amount distributions due to fogging charge are calculated using the plurality of fogging charged particle amount distributions;
processing in which a position shift amount of a writing position is calculated that is based on the charge amount distribution due to direct charge and the plurality of charge amount distributions due to fogging charge;
processing in which an exposure position is corrected using the position shift amount; and
processing in which the corrected exposure position is exposed to a charged particle beam.