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Influence of the pellicle on final photomask flatness

机译:防护膜对最终光掩模平坦度的影响

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摘要

Photomask pellicles play an important role in determining final photomask flatness, which is important to photomask optical performance. This study explores the impact of the pellicle frame flatness and pellicle-to-mask adhesive on photomask flatness. In addition, the change in mask flatness as a function of time after pellicle mounting is studied. Implications of these results on photomask manufacture and photolithography are discussed.
机译:光掩模防护膜在确定最终的光掩模平坦度中起重要作用,这对光掩模的光学性能很重要。这项研究探讨了防护膜框架平整度和防护膜-掩模粘合剂对光掩模平坦度的影响。另外,研究了在膜片安装后掩模的平坦度随时间的变化。讨论了这些结果对光掩模制造和光刻的影响。

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