EUV PHASE-SHIFT SRAF MASKS BY MEANS OF EMBEDDED PHASE SHIFT LAYERS

Embodiments described herein comprise extreme ultraviolet (EUV) reticles and methods of forming EUV reticles. In an embodiment, the reticle may comprise a substrate and a mirror layer over the substrate. In an embodiment, the mirror layer comprises a plurality of alternating first mirror layers and...

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Bibliographische Detailangaben
Hauptverfasser: CHOI, Chang Ju, SCHENKER, Richard, BRISTOL, Robert, ZHANG, Guojing, TRONIC, Tristan, SUNDARAMURTHY, Arvind, MAGANA, John
Format: Patent
Sprache:eng
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Zusammenfassung:Embodiments described herein comprise extreme ultraviolet (EUV) reticles and methods of forming EUV reticles. In an embodiment, the reticle may comprise a substrate and a mirror layer over the substrate. In an embodiment, the mirror layer comprises a plurality of alternating first mirror layers and second mirror layers. In an embodiment, a phase-shift layer is formed over the mirror layer. In an embodiment, openings for printable features and openings for non-printable features are formed into the phase-shift layer. In an embodiment, the non-printable features have a dimension that is smaller than a dimension of the printable features.