Flexible Board , commonly known as FPC in the industry, is Printed Circuit Board made of Flexible insulating substrate (mainly polyimide or polyester film), which has many advantages that rigid Printed Circuit Board does not have. For example, it can be freely bent, wound and folded.

FPC can greatly reduce the volume of electronic products, suitable for electronic products to high density, small, high reliable direction of development. Therefore, FPC has been widely used in aerospace, military, mobile communications, portable computers, computer peripherals, PDA, digital cameras and other fields or products.

FPC also has the advantages of good heat dissipation and weldability, easy assembly and connection, low comprehensive cost.

FPC can be divided into single, double and multilayer boards.The substrate used is polyimide copper clad baord. This kind of material has high heat resistance, good dimensional stability, and the covering film with mechanical protection and good electrical insulation property is pressed into the final product. The surface and inner conductor of the double-layer and multi-layer printed circuit board are metallized to realize the electrical connection of the inner and outer circuits.

The functions of flexible Circuit board can be divided into four types, namely, Lead Line, Printed Circuit, Connector and Integration of Function. The uses of flexible Circuit board cover the range of computers, peripheral auxiliary systems of computers, consumer appliances and automobiles.