Method for preparing circuit board and circuit board

Abstract

The application provides a method for preparing a circuit board and the circuit board. The preparation method of the above-mentioned circuit board comprises the following steps: making a ventilating board, and setting an island area on the venting board; Connect to the bottom layer of the screen plate to obtain an aluminum mesh with a window; place the aluminum mesh on the circuit board of the hole to be plugged; set the window facing the hole to be plugged, and the hole to be plugged is facing the air guide between the island areas Setting; scrape the copper paste covered in the aluminum mesh into the window, and pour the copper paste into the hole to be plugged through the window; insert the resin plug into the hole to be plugged in the circuit board through the aluminum mesh; insert the circuit The copper paste in the board is cured. The preparation method of the above-mentioned circuit board can make the plug hole smooth and free of bubbles, and can ensure that the circuit board will not be deformed during the resin plug hole manufacturing process.

Description

technical field [0001] The invention relates to the technical field of printed circuit board manufacturing, in particular to a method for preparing a circuit board and a circuit board. Background technique [0002] With the development of miniaturization of assembly components, the wiring area and pattern design area of ​​circuit boards are also continuously reduced. In order to adapt to this development trend, circuit board designers and manufacturers are constantly updating the design concepts and production methods. The process of resin plug hole is also a technical method invented by people to reduce the design size of the circuit board and assemble components. Its bold design concept and large-scale production have indeed played a great impetus in the field of circuit board production, effectively improving the reliability and production process capabilities of products such as HDI, thick copper, and backplanes. Understanding and effectively using this technology is a...

AI Technical Summary

Problems solved by technology

[0003] The general tools for resin plug hole production include plug hole aluminum sheet screen, breathable plate and scraper. The scraper squeezes and scrapes the resin into the hole to make it full, but the breathable plate is needed to give air flow space, so the breathable plate is the resin plugging process. A necessary auxiliary tool, but during the drilling process of the existing air-permeable board, the slightly denser parts will fall off and form holes. The larger these holes are, the circuit board will be deformed when using a scraper to make resin plug holes. The problem gets worse, leading to problems with plug holes, underfilled plug holes, and plug hole blistering

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