Patent ID: 8653483

Claim:
A mask manufacturing device comprising: a positional-deviation calculating unit that acquires positional deviation information, based on a difference between an actual position of a pattern firmed on a mask substrate and a design position decided at a time of designing the pattern, from a predetermined area of a square on the mask substrate; an irradiating-condition calculating unit that calculates an irradiating condition, including an irradiating amount and an irradiating position, to correct the positional deviation within the predetermined area of a square on the mask substrate by using a first positional-deviation correction information, which indicates a relationship between (1) the irradiating amount and the irradiating position of the mask substrate and (2) a pattern position change after irradiation; and an irradiating unit that irradiates the mask substrate with radiation under the irradiating condition calculated by the irradiating-condition calculating unit to form a heterogeneous layer in a predetermined position within the mask substrate, the heterogeneous layer having a volume that expands more greatly than that of a surrounding mask substrate region, wherein the irradiating-condition calculating unit calculates the irradiating amount according to a second positional-deviation correction information indicating a relationship between (1) an irradiating amount when an irradiation position in a thickness direction of the mask substrate is fixed and (2) a pattern position change after irradiation.