The structure of PCB is divided into single board, double board and multilayer board. A single panel has only one printed circuit, with wiring on one side and mounted components on the other. Double-sided printed circuit and double-sided wiring are more suitable for complex circuits. Multi-layer board adds internal circuit architecture on the basis of single and double-layer board, which can realize more complex functions. The main types of PCB are rigid board and flexible board, which can be bent and folded, and are suitable for scenes with limited space or high strength.
With the continuous development of electronic technology, the application of PCB is also expanding. PCB has become a widely used component in modern industry. Widely used in electronic equipment, computers, communication equipment, automobiles, medical devices and other industries. Because of its high reliability and the improvement of manufacturing efficiency, PCB is more and more widely used, and its importance in the electronic industry is also rising.