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AssigneeKabushiki Kaisha Toshiba
InventorsAkira Ogawa, Yukihiro Ushiku, Tomomi Ino
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A quality control system has: a QC value storage unit that stores QC actual measurements of past lots, a data acquisition device that acquires the device internal information of a processing device processing an intended lot, a device internal information storage unit that stores the device internal information, a recipe storage unit that stores a plurality of recipes classified by the distribution of sampling density within a wafer, a QC value prediction unit that predicts a QC prediction value of the intended lot using the device internal information and the QC actual measurements, a wafer determination unit that determines a sample wafer to be measured from among a plurality of wafers constituting the intended lot using the QC prediction value, a recipe selection unit that selects an application recipe to be applied to the sample wafer from among the plurality of recipes using the QC prediction value, and a measurement device that makes a QC measurement on the sample wafer using the application recipe and stores the measurement result in the QC value storage unit.
A quality control system comprising:
A quality control method comprising:
A method of lot-to-lot wafer processing comprising:
Dependencies are inferred from the claim text.