Patent ID: 7609053
Filing Date: 2009-10-27
Classification: G01R

Abstract:
1. A wafer testing system integrated with radio frequency identification (RFID) techniques, comprising: a wafer storage section, for storing at least a carrier loaded with a plurality of wafers; a prober, comprising a movable stage, a probe card clamping mechanism and a probe card, wherein the movable stage is used to support a wafer to be tested and move the wafer along X, Y and Z axes while the probe card is clamped by the probe card clamping mechanism; and a tester, for sending a test signal to the prober so as to conduct a testing process on said wafer and, when the testing process is completed, calling an interface program to convert a test result of said wafer into a file conforming to a specific data format; wherein the wafer testing system is characterized in: the carrier being provided with at least one RFID tag; the prober being provided with an RFID reader for reading a tag info stored in the RFID tag; an RFID middleware unit being provided to receive the tag info read by the RFID reader and calling related applications so as to generate a corresponding wafer info; an engineering data analysis (EDA) system being provided to receive and process the file in the specific data format converted by the interface program so as to generate a yield info of said wafer; and a manufacturing execution system (MES system) being provided to integrate the wafer info from the RFID middleware unit with the yield info from the EDA system to allow a real-time wafer-based monitoring process.