Patent ID: 7118834
Filing Date: 2006-10-10
Classification: G03F

Abstract:
1. An exposure method comprising: preparing a first mask in which a size of a mask pattern is measured in advance; applying exposures on the first mask to form resist patterns; obtaining an exposure curve of sizes of the formed resist patterns to quantities of the applied exposures; calculating a first exposure quantity to be applied to the first mask from the exposure curve to provide a first resist pattern; simulating an optical intensity distribution on a wafer in a case where the first mask is used and an optical intensity distribution on the wafer in a case where a second mask is used, a size of a mask pattern of the second mask being measured in advance; calculating a difference in optical intensity between the first mask and the second mask from the simulated optical intensity distributions; and calculating a second exposure quantity to be applied to the second mask to provide a second resist pattern, from the first exposure quantity and the difference in optical intensity.