Processing Technology and Application of FPC Flexible Circuit Board

FPC board, also known as soft board, flexible board and flexible circuit board, is a highly reliable and excellent flexible printed circuit board made of flexible insulating substrate (polyimide or polyester film). Understanding its process in the factory will be of great benefit to the design of electronic engineers.

The flexible circuit board has the characteristics of high wiring density, light weight, thin thickness and good flexibility. Flexible circuit board is the only solution to meet the requirements of miniaturization and mobility of electronic products. It can bend, wind and fold freely, can withstand millions of times of dynamic bending without damaging the wire, can be arranged arbitrarily according to the spatial layout requirements, and can move and expand freely in three-dimensional space, so as to achieve the integration of component assembly and wire connection; Flexible circuit board can greatly reduce the volume and weight of electronic products, which is suitable for the development of electronic products in the direction of high-density, miniaturization and high reliability.

According to the number of layers of the line: single-sided FPC, double-sided FPC, multi-layer FPC

According to physical strength: flexible PCB, rigid flexible PCB

According to the base material: polyester base material type, organic fiber base material type, polytetraethylene medium film base material type, etc

With or without reinforcement layer: with enhanced FPC, without enhanced FPC

Wiring density according to the line: ordinary FPC, high-density interconnection (HDI) FPC

2、 Production process

Surface treatment form:

3、 Application industry

FPC has been widely used in aerospace, military, mobile communication, laptop, computer peripherals, PDA, digital cameras and other fields or products. Our most common flexible board is the internal connection cable of computer hard disk drive (HDD). At present, the market potential of flexible circuit technology in portable devices (such as mobile phones) is very large.

4、 Major manufacturers

At present, the global FPC production enterprises are mainly Japan, South Korea and Taiwan, China. In recent years, the FPC production in Chinese Mainland has been rising, which has exceeded 30% of the global FPC production, but most of the production is occupied by joint ventures and foreign-funded enterprises. Joint ventures, external strong R&D strength, complete upstream and downstream industrial chains, technology and capacity scale have obvious advantages. According to statistics, about 1/3 of China's FPC enterprises are foreign-funded enterprises, whose total output value accounts for more than 80% of the mainland's FPC GDP.