PCB tolerance plate structure and processing method thereof

Abstract

The invention provides a PCB tolerance plate structure and a processing method thereof. The structure comprises a PCB substrate, the PCB substrate is provided with n positioning holes and n PCB line units, the PCB substrate is provided with a reference measuring hole and an anti-weld counterpoint column, and the thickness of the anti-weld counterpoint column is larger than or equal to that of thePCB line units; etching is conducted according to the position of the positioning hole, whether the PCB line units and the anti-weld counterpoint column are qualified or not is judged according to thereference measuring hole, according to the position of the anti-weld counterpoint column, the exposed anti-weld ink is solidified, image transfer is achieved, and a PCB tolerance plate is obtained. Accordingly, whether the PCB line units formed through etching meet the requirements or not can be detected in time, the rate of certified products of etching is guaranteed, when the anti-weld ink is printed, image transfer can be achieved accurately according to the anti-weld counterpoint structure, the positions of all structures of the finished PCB tolerance plate product are accurate, the PCB line unit performance obtained through quantity production is guaranteed, the number of scrap is reduced, and the cost is reduced.

Description

technical field [0001] The invention relates to a PCB structure and a processing method, and specifically discloses a PCB tolerance plate structure and a processing method thereof. Background technique [0002] PCB, or printed circuit board, is the basis of almost any electronic product and appears in almost every electronic device. Generally speaking, if there are electronic components in a certain device, they are also integrated in various sizes. different PCB. In addition to fixing various components, the main function of PCB is to provide connection circuits between various components. As electronic equipment becomes more and more complex, more and more components are required, and the lines and components on the surface of the PCB are becoming more and more dense. [0003] PCB tolerance board is to form several identical and small PCB line units by etching a large copper-clad board, and print solder resist ink on the PCB tolerance board, so that all PCB line units on...

AI Technical Summary

Problems solved by technology

After the traditional copper clad laminate is etched by dry film, the solder resist ink is directly printed and the image is transferred to the solder resist ink through the film. After development, the PCB tolerance board finally obtained is prone to misalignment, resulting in the final cured solder resist ink remaining on the PCB circuit. The structure of the unit does not need to print solder resist ink, which affects the performance of the PCB line unit, and may also cause the entire PCB tolerance board to fail, and the failure rate of the finished product is high

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