Patent ID: 8832607

Claim:
A method for making a correction map of a dose amount, the dose amount being a dose amount of EUV light used when exposing with the EUV light, the exposing being performed by sequentially irradiating the EUV light onto a plurality of regions, the method comprising: making an initial correction map of the dose amount by considering at least one selected from the group consisting of a nonuniformity of a dose amount of EUV light emitted from a light source, a bias of a pattern of an EUV mask, and fluctuation of exposing by an exposure apparatus, but not considering a flare of the EUV light; calculating, using a processor programmed to perform the calculating, an aerial image of the EUV mask to be optically formed at a position of a resist film based on the initial correction map of the dose amount and flare irradiated onto one of the regions when the EUV light is irradiated onto the one of the regions; estimating a pattern formed in the resist film by performing a simulation of the exposing and a developing based on the aerial image; determining whether or not all of differences between estimated values and target values of critical dimensions of portions of the estimated pattern are less than reference values; and correcting the initial correction map in the case where at least one of the differences is more than the reference value, the correcting of the initial correction map, the calculating of the aerial image, the estimating of the pattern, and the determining being repeated until all of the differences are less than the reference value.