Patent ID: 7112390

Claim:
A method of manufacturing an application-specific chromeless phase shift mask which is adaptively configured for use in any of plural exposure devices and any of plural exposure conditions, comprising: designing a chromeless phase shift mask having a phase shifter which will change the phase of exposure light transmitted therethrough; manufacturing a basic form of the chromeless phase shift mask according to said designing; forming a photoresist film pattern on a wafer by a photolithographic process in which exposure light is directed onto a photoresist layer on the wafer through the basic form of the phase shift mask; measuring a specification of the photoresist film pattern; making a decision on whether the basic form of the chromeless phase shift mask on the basis of a determination as to whether the specification of the photoresist film pattern is within a predetermined range; and modifying the chromeless phase shift mask in a manner that changes a specification of the basic form of the mask without altering the phase shift characteristics of the mask, unless the measured specification of the photoresist film pattern is within said predetermined range, to obtain the application-specific chromeless phase shift mask.