Patent ID: 6335981
Filing Date: 2002-01-01
Classification: G03F,G06F,G06T,Y02P

Abstract:
A method for correcting a pattern of a photomask for forming a desired photoresist pattern on a wafer by developing a photoresist after exposure through a photomask, comprising the steps of:(1) receiving, at a time, pattern data representing patterns of a plurality of photomasks; (2) automatically extracting, from an entire region of each of the plurality of photomasks on the pattern data, a development correction range which require being corrected with respect to receding edges and pattern deformation of a photoresist generated during development; (3) correcting, with respect to development of the photoresist, the photoresist within only the development correction range; (4) automatically extracting, from the entire region of each of the plurality of photomasks on the pattern data, an underlayer correction range which require being corrected with respect to an optical proximity effect due to a base structure of the photoresist; and (5) correcting, with respect to the base structure of the photoresist, the photoresist within only the underlayer correction range.