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Optimisation of the process control in a semiconductor company: model and case study of defectivity sampling

机译:一家半导体公司的过程控制优化:缺陷抽样的模型和案例研究

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摘要

This article studies the skip, under some assumptions, of process control operations. The case of one tool, one enhanced buffer and one metrology tool of a monotonic parameter is analysed. This article presents circumstances in which control plan can be optimised due to the buffer's behaviour. After discussing the industrial issue of defectivity, this article presents a literature review followed by the model and steps towards industrial development. Then demonstrator, which is applied at a case study of defectivity sampling, is presented. A test of over a 300-mm wafer fabrication data set shows serious improvements - around 35% of defectivity controls have been skipped compared to the static sampling plan.
机译:本文研究在某些假设下过程控制操作的跳过。分析了单调参数的一种工具,一种增强的缓冲区和一种计量工具的情况。本文介绍了由于缓冲区的行为而可以优化控制计划的情况。在讨论了缺陷性的工业问题之后,本文提出了一篇文献综述,随后介绍了工业发展的模型和步骤。然后介绍了用于缺陷率抽样案例研究的演示器。对300毫米以上的晶圆制造数据集进行的测试显示出了重大改进-与静态采样计划相比,大约35%的缺陷率控件已被跳过。

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