Chip identifier automatic checking system and method thereof

Abstract

The invention provides an automatic checking system for a chip identifier. The system comprises a data acquisition device, a processing device and a test device, wherein the data acquisition device is used for obtaining chip position data, wafer batch number data, chip number engraving data and a chip random code; and the processing device is provided with a coding module for coding the wafer batch number data, the chip number engraving data, the chip random code and the chip position data so as to form the chip identifier; and the test device is provided with a confirmation module for testing whether the chip identifier is normal or not. When the confirmation module finds that the chip identifier is wrong, the confirmation module transmits a stop signal to enable one probe group connected with the system to be stationary.

Description

technical field [0001] The invention relates to an automatic checking system and its method, in particular to a chip identifier automatic checking system and its method. Background technique [0002] When the current chip products leave the factory, a chip identifier will be written on each chip. At some point, the chip identifier of each chip must be unique. In other words, there cannot be repeated chip identifiers, and Therefore, in the chip manufacturing process, as long as the chip identifiers of two chips on a wafer are repeated, the wafer may have to be reimbursed accordingly. In addition, if the number of wafers in each batch is huge, the number of chips on the wafer is even more difficult to calculate. If the chip identifier of one of the chips is wrong, it is difficult for the staff to find out in real time, which makes subsequent wafers Continue to work until the problem is discovered at the time of shipment, so that the entire batch of goods must be reimbursed, r...

AI Technical Summary

Problems solved by technology

In addition, if the number of wafers in each batch is huge, the number of chips on the wafer is even more difficult to calculate. If the chip identifier of one of the chips is wrong, it is difficult for the staff to find out in real time, which makes subsequent wafers Continue to work until the problem is discovered at the time of shipment, so that the entire batch of goods must be reimbursed, resulting in incalculable losses

[0003] Although a random serial number is added to the code of the chip identifier of some chips, this coding method still has a chance to cause repeated codes, so it still cannot completely solve the above problems

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