Patent ID: 8953869
Filing Date: 2015-02-10
Classification: G06T

Abstract:
1. A method of inspecting an extreme ultraviolet (EUV) reticle, the method comprising: using an inspection tool for detecting electromagnetic waveforms to obtain a phase defect map for the EUV reticle before a pattern is formed on the EUV reticle, wherein the phase defect map identifies a position of each phase defect on the EUV reticle; after the pattern is formed on the EUV reticle, using a charged particle tool to obtain an image of each reticle portion that is proximate to each position of each phase defect as identified in the phase defect map; displaying or storing the phase defect map and one or images of each reticle portion that is proximate to each position of each phase defect so as to facilitate analysis of whether to repair or discard the EUV reticle; after the pattern is formed on the EUV reticle, using a charged particle tool to obtain a pattern defect map for the EUV reticle, wherein the pattern defect map identifies a position of each pattern defect on the EUV reticle; and displaying and/or storing the pattern defect map in association with the phase defect map and one or images of each reticle portion that is proximate to each position of each phase defect so as to further facilitate analysis of whether to repair or discard the EUV reticle.