Abstract:
A photomask includes a transparent substrate, a mask pattern formed on the substrate, and a protective layer pattern covering side walls of the mask pattern, wherein a top of the protective layer pattern is exposed.
Abstract:
A photomask includes a transparent substrate, a mask pattern formed on the substrate, and a protective layer pattern covering side walls of the mask pattern, wherein a top of the protective layer pattern is exposed.
Abstract:
A method of manufacturing a pellicle includes forming a membrane on a first surface of a substrate from a chemical reaction in which the substrate serves as a catalyst, forming a protective pattern on a second surface of the substrate, immersing the substrate in an etchant solution, such that a portion of the substrate exposed through the protective pattern is removed to form a frame, and replacing the etchant solution with a solvent.
Abstract:
A reflective photomask blank, a reflective photomask and an integrated circuit device manufactured by using a reflective photomask, include a multi-layered reflection layer; a capping layer on the multi-layered reflection layer and including a first transition metal; a passivation film contacting at least a portion of the capping layer on a side opposite to the multi-layered reflection layer and including a second transition metal and a nitrogen (N) atom; and a light absorption pattern covering a portion of the capping layer.