Patent ID: 8658537
Filing Date: 2014-02-25
Classification: B29C,B82Y,G01B,G03F,G21K,H01L

Abstract:
1. A mask manufacturing method comprising: acquiring positional deviation information based on a difference between an actual position of a pattern formed on a mask substrate and a design position decided at a time of designing the pattern; calculating an irradiating amount and an irradiating position, each corresponding to a predetermined area of a square on the mask substrate and determined from the positional deviation information; and irradiating the mask substrate with radiation according to the calculated irradiating amount and the calculated irradiating position 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 calculating the irradiating amount includes calculating the irradiating amount according to positional-deviation correction information indicating a relationship between (1) an irradiating amount when an irradiating position in a thickness direction of the mask substrate is fixed and (2) a pattern position change after irradiating the mask substrate.