Tracking method of circuit board quality

Abstract

The invention discloses a method for tracing quality of a circuit board. The method comprises the following steps of: providing a circuit board substrate, wherein the circuit board substrate comprises a plurality of product areas and a non-product area, and a first identification code is formed in the non-product area of each circuit board substrate; forming a conductive circuit in the plurality of product areas of the circuit board substrate; laminating a plurality of the circuit board substrates which are used for manufacturing a same multilayer circuit board substrate to obtain a multilayer circuit board substrate, wherein all the product areas which correspond to one another form a circuit board unit; and forming a second identification code on the surface of the multilayer circuit board substrate, wherein the second identification code is correlative to the first identification codes of the plurality of the circuit board substrates which are used for manufacturing the same multilayer circuit board substrate; forming a third identification code on the surface of each circuit board unit, wherein the circuit board unit of the circuit board unit which belongs to the same multilayer circuit board substrate is mutually correlative to the corresponding second identification code; and shaping the multilayer circuit board substrate to obtain a plurality of circuit board units which are separated from one another.

Description

technical field [0001] The invention relates to the technical field of circuit boards, in particular to a method for tracking the quality of circuit boards. Background technique [0002] With the advancement of science and technology, printed circuit boards have been widely used in the electronic field. For the application of the circuit board, please refer to the literature Takahashi, A.Ooki, N.Nagai, A.Akahoshi, H.Mukoh, A.Wajima, M.Res.Lab, High density multilayer printed circuit board for HITAC M-880, IEEE Trans. on Components, Packaging, and Manufacturing Technology, 1992, 15(4): 418-425. [0003] In the actual production process of circuit boards, a large number of circuit board semi-finished products flow in and out of each production station, and it is difficult to record the time interval for each completed circuit board product to be processed at each station. When it is found that there is a problem with the processing of a certain station of the circuit board p...

AI Technical Summary

Problems solved by technology

[0003] In the actual production process of circuit boards, a large number of circuit board semi-finished products flow in and out of each production station, and it is difficult to record the time interval for each completed circuit board product to be processed at each station

When it is found that there is a problem with the processing of a certain station of the circuit board product during the inspection process, it is difficult to track the processing time of the corresponding station, so it is not easy to find the production status of the station when the problematic product is processed, and it is also difficult It is difficult to find the flow of other products that are processed at the same time as the problematic product

In this way, the quality of circuit board products is difficult to track

If manual counting and recording are used for tracking, it will take a lot of time and result in a waste of labor costs

Images