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A novel Alt-PSM structure: isn't this an embedded Atten-PSM

机译:一种新颖的Alt-PSM结构:这不是嵌入式Atten-PSM

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摘要

A novel mask structure for an alternating aperture phase shift mask (Alt-PSM) to cut mask cost is proposed. By a mask with structure of an embedded attenuating phase shift mask (Atten-PSM), an Alt-PSM for an isolated line formation can be well fabricated. Fine image quality is confirmed with optical image calculations. Moreover, concept of this novel mask is proved by a preliminary experiment. In conclusion, this novel mask can replace conventional Alt-PSM for logic devices, resulting in considerable cut of mask cost.
机译:提出了一种用于交替孔径相移掩模(Alt-PSM)的新型掩模结构,以降低掩模成本。通过具有嵌入式衰减相移掩模(Atten-PSM)的结构的掩模,可以很好地制造用于隔离线形成的Alt-PSM。光学图像计算可确认图像质量良好。此外,通过初步实验证明了这种新型口罩的概念。总之,这种新颖的掩模可以代替传统的逻辑器件Alt-PSM,从而大大降低了掩模成本。

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