Patent ID: 9134602
Filing Date: 2015-09-15
Classification: G03F

Abstract:
1. A method of manufacturing an extreme ultraviolet (EUV) mask, the method comprising: providing a workpiece having a substrate with a multilayer (ML) film on the substrate; inspecting for defects on a top surface of the workpiece; if a defect is found, determining a first volume including the defect wherein the first volume has a first area in the substrate, a second area on a top surface of the first ML film and a peripheral surface between the first area and the second area; removing the first volume from the ML film and the substrate to form an opening; preparing a ML body that is defect free and matches the first volume in size and shape; plugging the ML body into the opening in the ML film and the substrate; and forming an absorber layer on the ML film and the ML body.