Patent ID: 6897646
Filing Date: 2005-05-24
Classification: G01R

Abstract:
1. Method for testing wafers to be tested in a test device, in which the test device can be calibrated, having the following steps: a) Introduction of a calibration wafer into the test device by means of a handling unit; b) Determination of calibration values of the test device by means of a control by a calibration sequence control unit; c) Storage of the calibration values determined in a memory unit; d) Calibration of the test device by means of the stored calibration values; e) Removing the calibration wafer from the calibrated test device such that the calibration wafer can be replaced by a wafer to be tested; f) Introduction of the wafer to be tested into the calibrated test device by means of the handling unit; and g) Testing of the wafer to be tested in the calibrated test device by means of a control by a test sequence control unit, the stored calibration values being applied.