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    Characterizing Process Nonuniformities on Large-Diameter Wafers: An Overview

    Published: 01 January 1983

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    An overview is presented of the techniques available for characterizing process nonuniformities on large-diameter wafers. Examples are given of the use of two-dimensional and three-dimensional mapping techniques for displaying within-wafer variability, and of relative and cumulative frequency plots for representing process tolerances. Two new display methods are recommended for dealing with small data sets: minicontour maps and folded-axis cumulative frequency plots.


    resistivity characterization, nonuniformities, silicon wafers, large-diameter wafers, ion implantation, resistivity mapping, two-dimensional maps, three-dimensional maps, contour maps, frequency plots

    Author Information:

    Perloff, DS
    Signetics Corporation, Sunnyvale, Calif.

    PROMETRIX Corp., Sunnyvale, Calif.

    Committee/Subcommittee: F01.06

    DOI: 10.1520/STP36182S