Phase shifting mask structure with multilayer optical coating fo

Radiation imagery chemistry: process – composition – or product th – Radiation modifying product or process of making – Radiation mask

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430311, 430312, 430323, 430224, 428156, G03F 900

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054728118

ABSTRACT:
A multi-layer PSM structure with multi-layer optical coating disposed between a quartz substrate and a surrounding medium, which typically is air. The multi-layer coating is comprised of a high index of refraction material overlying the quartz and a lower index of refraction material overlying the first. The multi-layer coating essentially functions as an anti-reflective coating to reduce scattering and reflection at the interface boundaries.

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