What is a flexible printed circuit board?
Flexible Printed Circuit Board (Flexible Printed Circuit Board) is a printed circuit made of a flexible insulating substrate, which has many advantages that a rigid printed circuit board does not have. For example, it can be freely bent, wound, and folded, can be arranged arbitrarily according to the space layout requirements, and can be moved and stretched arbitrarily in three-dimensional space, so as to achieve the integration of the electronic components assembly and the electronic connectors. The use of FPC can greatly reduce the volume of electronic products, which is suitable for the development of electronic products in the direction of high density (HDI PCB), miniaturization and high reliability. Therefore, FPC has been widely used in aerospace, military, mobile communications, laptop computers, computer peripherals, PDAs, digital cameras and other fields or product PCB assemblies.
FPC also has the advantages of good heat dissipation and solderability, easy assembly, and comprehensive cheap pcb manufacturing. The design of soft and hard combination also makes up for the slight deficiency of the flexible substrate in the component carrying capacity to a certain extent.
Flexible printed circuit boards are divided into single-sided, double-sided and multi-layer boards. The base material used is mainly polyimide copper clad laminate. This kind of material has high heat resistance, good dimensional stability, and a cover film with mechanical protection and good electrical insulation properties through pressing to form the final product. The surface and inner conductors of the double-sided, multilayer printed circuit board are electrically connected to the inner and outer circuits through metallization.
