Template, method of forming a template, apparatus and method of manufacturing an article
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United States of America Patent
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Sep 10, 2024
Grant Date -
Jun 29, 2023
app pub date -
Dec 27, 2021
filing date -
Dec 27, 2021
priority date (Note) -
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status (Latency Note)
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Abstract
A method of forming an imprint template. A hard mask layer is formed at a first side first side of a template plate. An imprint lithography is performed to form a patterned hard mask covering the first region, the patterned hard mask having a pattern portion and an edge portion defined in the same imprint lithography. The template plate is dry etched with the first region of the template plate covered with the patterned hard mask. An additional mask layer is formed on the patterned hard mask. A wet etch process is performed with both the patterned hard mask and the additional mask layer formed on the template plate to form a mesa under the pattern portion with the edge portion of the hard mask overhanging on the second region of the template plate.
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