Abstract: A method and a system for inspection of a patterned structure are provided. In various embodiments, the method for inspection of a patterned structure includes transferring the patterned structure into a microscope. The method further includes acquiring a top-view image of the patterned structure by the microscope. The method further includes transferring the patterned structure out of the microscope and exporting the top-view image to an image analysis processor. The method further includes measuring a difference between a contour of the top-view image and a predetermined layout of the patterned structure by the image analysis processor.

Abstract: A reticle and a method of fabricating the reticle are provided. In various embodiments, the reticle includes a substrate, a patterned first attenuating layer, a patterned second attenuating layer, and a patterned third attenuating layer. The patterned first attenuating layer is disposed on the substrate. The patterned second attenuating layer is disposed on the patterned first attenuating layer. The patterned third attenuating layer is disposed on the patterned second attenuating layer. A first part of the patterned first attenuating layer, a first part of patterned second attenuating layer, and the patterned third attenuating layer are stacked on the substrate as a binary intensity mask portion.

Abstract: The present disclosure provides a structure of a photomask. The photomask includes a substrate; and a conductive material layer dispose over the substrate and patterned to include a plurality of openings and a recess structure surrounding the plurality of openings.