What is screen printing of circuit boards?

Screen printing of circuit board is to make printed circuit board by screen printing technology. The screen printing value is a screen printing layer. When drawing a pcb, it is layered, and the layer containing text is used to mark components or add other information. This layer is called a screen printing layer.

Screen printing is used to print descriptive words such as the shape and number of components on the surface of components or solder, which is convenient for the maintenance and operation of plug-ins (including surface package component patches) in the production process of circuit boards and subsequent products.

Generally, the screen printing layer is placed on the top, but for electronic products with high failure rate and frequent maintenance, such as the motherboard of TV sets, computer monitors, printers and so on. The screen printing layer can be arranged on the surface of the component and the solder surface.

Extended data:

According to the number of layers, circuit boards can be divided into three categories: single board, double board and multi-layer circuit boards.

The first is a single panel. On the most basic PCB, the parts are concentrated on one side and the wires are concentrated on the other side. Because the wires only appear on one side, this PCB is called a single-sided circuit board. Single panel is usually simple to manufacture and low in cost, but the disadvantage is that it cannot be applied to too complicated products.

A double panel is an extension of a single panel. When single-layer wiring cannot meet the needs of electronic products, double panels will be used. Both sides are covered with copper and have traces, and the lines between the two layers can be connected through vias to form the required network connection.

Multilayer board refers to a printed board composed of more than three conductive pattern layers and insulating materials spaced between them, and the conductive patterns between them are connected with each other as required. Multilayer circuit board is the product of the development of electronic information technology towards high speed, multifunction, large capacity, small volume and thinness. According to its characteristics, circuit boards can be divided into flexible board (FPC), rigid board (PCB) and soft-hard combination board (FPCB).

References:

Baidu encyclopedia-circuit board

Baidu encyclopedia-silkscreen