PCB circuit board is one of the most important components in various electronic equipment, which plays a decisive role in the function of electronic equipment. In industrial electronic circuits, more than 60% of the PCB boards used are multilayer circuit boards, which shows the importance of multilayer circuit boards. With the development of science and technology, people began to have a better understanding of PCB multilayer circuit boards,
Multilayer PCB Manufacturing Overview: In essence, the manufacturing process followed by copper multilayer PCB manufacturers is very simple. The manufacturing process shall be carried out in the following manner:
Choose the material of inner core, prepreg and copper foil.
The prepreg sheet is made of glass cloth and epoxy resin.
The core laminate is further covered with copper foil (Cu) of a specific weight and thickness.
These layers are then covered with a photosensitive dry film that brings UV light into contact with the resist. By using UV light, electronic data from the internal circuit is transmitted to the photoresist.