BLANK MASK AND PHOTOMASK USING THE SAME

Disclosed is a blank mask including a transparent substrate and a light shielding film disposed on the transparent substrate, wherein the light shielding film includes a transition metal and at least one selected from the group consisting of oxygen and nitrogen, wherein when a surface of the light s...

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Bibliographische Detailangaben
Hauptverfasser: KIM, Taewan, SHIN, Inkyun, KIM, Seong Yoon, LEE, GeonGon, CHO, Hahyeon, KIM, Suhyeon, CHOI, Suk Young, LEE, Hyung-joo, SON, Sung Hoon, JEONG, Min Gyo
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:Disclosed is a blank mask including a transparent substrate and a light shielding film disposed on the transparent substrate, wherein the light shielding film includes a transition metal and at least one selected from the group consisting of oxygen and nitrogen, wherein when a surface of the light shielding film includes nine sectors formed by trisecting the surface of the light shielding film vertically and horizontally, each of the nine sectors has a Rsk value, respectively, and an average value of the Rsk values of the nine sectors is equal to −0.64 or more and less than or equal to 0, where Rsk value is a height symmetry of the surface of the light shielding film measured in accordance with ISO_4287, and wherein an average value of Rku values, which are kurtosis of the surface of the light shielding film measured in accordance with ISO_4287, of the nine sectors is 3 or less.