Mask blank substrate, substrate with multilayer reflection film, transmissive mask blank, reflective mask, and semiconductor device fabrication method

Disclosed is a mask blank substrate for use in lithography, wherein the main surface on which the transfer pattern of the substrate is formed has a root mean square roughness (Rms) of not more than 0.15 nm obtained by measuring an area of 1 μm×1 μm with an atomic force microscope, and has a power sp...

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Bibliographische Detailangaben
Hauptverfasser: Horikawa, Junichi, Usui, Youichi, Kozakai, Hirofumi, Shoki, Tsutomu, Hamamoto, Kazuhiro, Orihara, Toshihiko
Format: Patent
Sprache:eng
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Zusammenfassung:Disclosed is a mask blank substrate for use in lithography, wherein the main surface on which the transfer pattern of the substrate is formed has a root mean square roughness (Rms) of not more than 0.15 nm obtained by measuring an area of 1 μm×1 μm with an atomic force microscope, and has a power spectrum density of not more than 10 nm4 at a spatial frequency of not less than 1 μm−1.