Visit: 792    Date: 2021-06-12

From the appearance of electronic products to the present, it has been through every rigorous and innovative process that the current electronic products have become more and more superior in performance and smaller and lighter in appearance. But with the advent of these precision electronics, PCB circuit boards have become more and more complex in terms of wiring structure. The previous double-sided panels have great limitations in space, so PCB boards also follow the requirements of all electronic products to innovate, from the original single-sided to double-sided, and then to the emergence of multiple layers, an evolution in technology and space . So why does PCB develop to multi-layer? Let me tell you the following from Tongchuangxin.

PCB circuit board-character production

In the face of high assembly density, small size, light weight, and the requirements of light and miniaturization of electronic equipment, PCB circuit boards cannot meet these requirements with the most primitive double-sided PCB circuit boards. It cannot be satisfied, so it is necessary to adopt a multi-layer PCB circuit board, which can increase the number of wiring layers, thereby increasing design flexibility. In addition, the multilayer circuit board can form a circuit with a certain impedance, which can form a high-speed transmission circuit.

Alternate conductive pattern layers and insulating materials are laminated to form a multilayer PCB circuit board. The process is generally to etch the inner layer pattern first, and after blackening treatment, add the prepreg according to the predetermined design to add layers, and then add the copper The foil is added on the back and the back for pressing; while the double-sided does not need these steps of double-sided, it can directly take the material and start the process production.

Therefore, with the continuous development of electronic technology and the continuous improvement of electronic equipment requirements in various industries, the development of PCB circuit boards is moving in the direction of compactness, lightness, space and density.