Patent ID: 8421040

Claim:
A writing apparatus comprising: a deflection position calculation unit configured to calculate a deflection position for a first pattern by using a design position for the first pattern, and to calculate a deflection position for a second pattern by using a design position for the second pattern, the second pattern being complementary to the first pattern; a storage device configured to store a correction map; a correction unit configured to read the correction map from the storage device, and to correct the deflection position for the first pattern based on the correction map, and to correct the deflection position for the second pattern based on the correction map; a writing unit configured to write a first pattern at the deflection position for the first pattern, which has already been corrected and a plurality of measurement patterns for measurement onto a first mask substrate using a charged particle beam; and an addition unit configured to add a positional deviation amount of the first pattern having been written on the first mask substrate to the deflection position for the second pattern, which has already been corrected, wherein positional deviation amounts of the plurality of measurement patterns, the first pattern and the plurality of measurement patterns having been written onto the first mask substrate, are measured, the positional deviation amount of the first pattern is obtained by using the positional deviation amounts of the plurality of measurement patterns measured, and the writing unit writes the second pattern being complementary to the first pattern at the deflection position of the second pattern, to which the positional deviation amount of the first pattern has already been added, onto a second mask substrate using a charged particle beam.