Patent ID: 8309283

Claim:
A writing method comprising: calculating a proximity effect-corrected dose for correcting a proximity effect in charged particle beam writing, for each first mesh region made by virtually dividing a writing region of a target object into a plurality of first mesh regions of a first mesh size; calculating a fogging effect-corrected dose by using the proximity effect-corrected dose calculated and an area density in the first mesh size with respect to a first part of a calculation region for calculating the fogging effect-corrected dose for correcting a fogging effect in the charged particle beam writing, and by using an area density in a second mesh size larger than the first mesh size with respect to a remaining second part of the calculation region; synthesizing the fogging effect-corrected dose and the proximity effect-corrected dose for the each first mesh region; and writing a pattern on the target object by using a charged particle beam based on a synthesized correction dose.