Patent ID: 7071721
Filing Date: 2006-07-04
Classification: G01R

Abstract:
1. A test device for testing a plurality of electronic devices formed on a wafer, comprising: a pattern supply part for supplying a test pattern to each of the plurality of electronic devices; a measurement part for measuring data indicating operation of each of the plurality of electronic devices generated from the test pattern; a judgment part for judging acceptability of other electronic devices based on the data of at least one of the electronic devices among the plurality of electronic devices, wherein the data of each of the plurality of electronic devices is measured by the measurement part under the same condition and at the same time; and calculating a reference value for judging the acceptability of each of the plurality of electronic devices using the data of the plurality of electronic devices, wherein said judgment part judges the acceptability of each of the plurality of electronic devices using the reference value and the data of each of the plurality of electronic devices.