arXiv:2412.14599physics.opticscs.LG2024-12被引 2

用深度学习加速光刻掩模生成,提升可制造性。

Fast inverse lithography based on a model-driven block stacking convolutional neural network

  • 基于向量光刻模型,用块堆叠网络实现端到端掩模优化。
  • 无需大量标注数据,训练更高效,支持复杂掩模结构生成。
  • 适合芯片制造中对高精度、低成本掩模的需求场景。

在光刻领域,光学邻近修正(OPC)是一种关键的分辨率增强技术,通过像素级优化光掩模的透射函数以对抗光学邻近效应(OPE)。然而,传统像素级OPC方法生成的图案常面临制造难题,导致实际应用成本上升。本文提出一种新型逆光刻方法,采用模型驱动的块堆叠深度学习框架,显著加速生成可制造掩模。该方法基于向量光刻建模,通过消除对大规模标注数据的需求简化了训练过程。同时,引入波函数坍缩算法随机生成多样化目标图案,大幅扩展掩模模式范围。数值实验验证了该端到端方法的有效性,展现了其在先进OPC光刻中处理复杂掩模的能力。该进展有望提升OPC技术在实际制造环境中的可行性与经济性。

原文摘要 · Abstract (English)

In the realm of lithography, Optical Proximity Correction (OPC) is a crucial resolution enhancement technique that optimizes the transmission function of photomasks on a pixel-based to effectively counter Optical Proximity Effects (OPE). However, conventional pixel-based OPC methods often generate patterns that pose manufacturing challenges, thereby leading to the increased cost in practical scenarios. This paper presents a novel inverse lithographic approach to OPC, employing a model-driven, block stacking deep learning framework that expedites the generation of masks conducive to manufacturing. This method is founded on vector lithography modelling and streamlines the training process by eliminating the requirement for extensive labeled datasets. Furthermore, diversity of mask patterns is enhanced by employing a wave function collapse algorithm, which facilitates the random generation of a multitude of target patterns, therefore significantly expanding the range of mask paradigm. Numerical experiments have substantiated the efficacy of the proposed end-to-end approach, highlighting its superior capability to manage mask complexity within the context of advanced OPC lithography. This advancement is anticipated to enhance the feasibility and economic viability of OPC technology within actual manufacturing environments.

光刻深度学习OPC掩模生成

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