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Global source optimization for MEEF and OPE

机译:针对MEEF和OPE的全局源优化

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This work describes freeform source optimization considering mask error enhancement factor (MEEF), optical proximity effect (OPE), process window, and hardware-specific constraints. Our algorithm allows users to define maximum allowed MEEF and OPE error as constraints without defining weights among the metrics. We also consider hardware-specific constraints, so that the optimized source is suitable to be realized in Nikon's Intelligent Illumination hardware. Our approach utilizes a global optimization procedure to arrive at a freeform source shape solution, and since each source grid-point is assigned as variable, the source solution encompasses the maximum amount of degrees of freedom.
机译:这项工作描述了考虑掩模误差增强因子(MEEF),光学邻近效应(OPE),工艺窗口和特定于硬件的约束的自由格式源优化。我们的算法允许用户将最大允许的MEEF和OPE错误定义为约束,而无需在指标之间定义权重。我们还考虑了特定于硬件的约束,因此优化的光源适合在尼康的智能照明硬件中实现。我们的方法利用全局优化过程来获得自由形式的源形状解决方案,并且由于每个源网格点都被指定为变量,因此源解决方案包含最大的自由度。

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