Patent ID: 6681361
Filing Date: 2004-01-20
Classification: G01R

Abstract:
A testing equipment of semiconductor device for performing simultaneous inspection of plurality of semiconductor devices under test and performing classification of said semiconductor devices into prescribed categories, responsive to the results of said inspection, with utilizing a semiconductor device handler adapted for that purpose, comprising:a sequential mounting means for mounting a reference sample having data for prescribed characteristic item, into a plurality of DUT sections provided in a measurement section; a first storage means for storing said prescribed characteristic item of the reference sample; a second storage means for measuring said data of a prescribed characteristic item of said reference sample in each of said DUT sections and storing measurement results; a calculating means for calculating a difference value between said measured value of said reference sample in each of said DUT sections as stored in said second storage means, and said data of a prescribed characteristic item of said reference value stored in said first storage means, and determining a compensation value for each of said DUT sections; and a testing means using program with said compensation values established by said reference sample for each DUT section in order to execute prescribed inspection processing for each semiconductor devices unit under test in each DUT sections simultaneously and judge the samples characteristics for each one of said semiconductor devices, respectively; and a frequency setting control means for repeating a calculation operation for determining said compensation value for said plurality of DUT sections of said measurement section with a prescribed frequency.