Abstract:The lithography industry has historically striven to improve resolution by reducing wavelength and increasing the lens’ numerical aperture (NA). The introduction of 0.33 NA extreme ultraviolet (EUV) lithography into high-volume manufacturing (HVM) represents the largest jump in resolution ever achieved by the industry. However, even this resolution is not sufficient for the patterns required for beyond the 2 nm logic technology node. This is due to low contrast and the diffraction limit of current EUVL scanner… Show more
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