Patent ID: 8372564
Filing Date: 2013-02-12
Classification: B82Y,G03F

Abstract:
1. A reflective mask produced by forming a transfer pattern in an absorbing film of a reflective mask blank comprising a multilayer reflective film, on a substrate, having a structure in which high refractive index layers and low refractive index layers are alternately laminated, and the absorbing film stacked on the multilayer reflective film and adapted to absorb EUV exposure light, wherein the absorbing film is a phase shift film that allows the EUV exposure light having passed therethrough and reflected by the multilayer reflective film to have a predetermined phase difference with respect to the EUV exposure light directly incident on and reflected by the multilayer reflective film, wherein the multilayer reflective film is adapted to reflective films for the EUV exposure light, wherein the absorbing film in a blind area is removed, and wherein a plurality of the layers or all the layers of the multilayer reflective film in the blind area are removed from its upper layer.