Patent ID: 10444620

Abstract:
To provide a phase-shift mask in which the reduction in thickness of a light-shielding film is provided when a transition metal silicide-based material is used for the light-shielding film and by which the problem of ArF light fastness can be solved; and a mask blank for manufacturing the phase-shift mask.A mask blank has a structure in which a phase-shift film, an etching stopper film, a light-shielding film, and a hard mask film are laminated in said order on a transparent substrate, and at least one layer in the light-shielding film is made of a material which contains transition metal and silicon, and satisfies the conditions of Formula (1) below: CN≤9.0×10−6×RM4−1.65×10−4×RM3−7.718×10−2×RM2+3.611×RM−21.084   Formula (1)wherein RM is a ratio of the content of transition metal to the total content of transition metal and silicon in said one layer, and CN is the content of nitrogen in said one layer.