Extracting Defect Density and Size Distributions from Product ICs
Extracting Defect Density and Size Distributions from Product ICs
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从产品 IC 中提取缺陷密度和尺寸分布
DOI:
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发表时间:
2006
影响因子:
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通讯作者:
C. Schuermyer
中科院分区:
文献类型:
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作者:
J. E. Nelson;T. Zanon;J. G. Brown;O. Poku;R. D. Blanton;Wojciech Maly;B. Benware;C. Schuermyer
Defect density and size distributions (DDSDs) are important parameters for characterizing spot defects in a process. This article addresses random spot defects, which affect all processes and currently require a heavy silicon investment to characterize and a new approach is proposed for characterizing such defects. This approach presents a system that overcomes the obstacle of silicon area overhead by using available wafer sort test results to measure critical-area yield model parameters with no additional silicon area. The results of the experiment on chips fabricated in silicon confirm the results of the simulation experiment that DDSDs measurement characterizes a process in ordinary digital circuits using only slow, structural test results from the product