METHOD AND APPARATUS FOR SUB-PELLICLE DEFECT REDUCTION ON PHOTOMASKS

In one embodiment, the invention is a method and apparatus for sub-pellicle defect reduction on photomasks. One embodiment of a photomask for use in photolithography includes a substrate on which a pattern is formed, the substrate having a frontside and an opposite backside, and a protective coating...

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Bibliographische Detailangaben
Hauptverfasser: BURNHAM JAY S, HOULE FRANCES A, KINDT LOUIS M
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:In one embodiment, the invention is a method and apparatus for sub-pellicle defect reduction on photomasks. One embodiment of a photomask for use in photolithography includes a substrate on which a pattern is formed, the substrate having a frontside and an opposite backside, and a protective coating formed on at least one of the frontside and the backside, the protective coating comprising silicon-based compound.