DevelSet: Deep Neural Level Set for Instant Mask Optimization

• URL: http://arxiv.org/abs/2303.12529v1
• Date: Sat, 18 Mar 2023 13:48:53 GMT
• Title: DevelSet: Deep Neural Level Set for Instant Mask Optimization
• Authors: Guojin Chen, Ziyang Yu, Hongduo Liu, Yuzhe Ma, Bei Yu
• Abstract summary: inverse lithography technique (ILT) has drawn significant attention and is becoming prevalent in emerging OPC solutions. In this paper, we present DevelSet, a GPU and deep neural network (DNN) accelerated level set OPC framework for metal layer.
• Score: 11.847061281805463
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: With the feature size continuously shrinking in advanced technology nodes, mask optimization is increasingly crucial in the conventional design flow, accompanied by an explosive growth in prohibitive computational overhead in optical proximity correction (OPC) methods. Recently, inverse lithography technique (ILT) has drawn significant attention and is becoming prevalent in emerging OPC solutions. However, ILT methods are either time-consuming or in weak performance of mask printability and manufacturability. In this paper, we present DevelSet, a GPU and deep neural network (DNN) accelerated level set OPC framework for metal layer. We first improve the conventional level set-based ILT algorithm by introducing the curvature term to reduce mask complexity and applying GPU acceleration to overcome computational bottlenecks. To further enhance printability and fast iterative convergence, we propose a novel deep neural network delicately designed with level set intrinsic principles to facilitate the joint optimization of DNN and GPU accelerated level set optimizer. Experimental results show that DevelSet framework surpasses the state-of-the-art methods in printability and boost the runtime performance achieving instant level (around 1 second).

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