The FPC Flexible Printed Circuit Board, as its name suggests, has the function of inflection and can be made into a three-dimensional space. Therefore, in theory, the entire wiring work can be completed with only one FPC flexible circuit board/FPC soft board in one machine. Since the FPC flexible circuit board/FPC soft board can be omitted, many connectors or wires can be omitted, and the wiring volume can be greatly reduced, so that the electronic product can achieve the goal of miniaturization and weight reduction. In addition, the FPC flexible circuit board/FPC flexible board can be equipped with many parts and can be stored in the gaps in the machine, so the well-designed circuit does not need any welding and adjustment work after being installed in the chassis, which is greatly reduced invisibly. cost.
　　 Since the FPC flexible circuit board/FPC flexible board has the ability to withstand small tortuous turns, this characteristic is difficult to replace with ordinary wires. Therefore, the recent use of FPC flexible circuit boards/FPC soft boards on the printed heads has absolutely overwhelmed ordinary wires, and almost all of the printed heads on electronic calculators and personal computers have adopted FPC flexible circuit boards/FPC soft boards. . And in the recently developed circuit forming technology, a circuit with a width of 0.1 mm and a pitch of 0.2 mm can be regulated, especially for a circuit that needs to flow a large number of signals but does not need to flow a large current, and can simultaneously configure the ground line and power cable.
　　 Light and thin are a major feature of FPC flexible circuit boards/FPC soft boards. Most of the RPCs have a thickness of 1.6 mm, and the recently developed glass fiber RPC also has a thickness of 0.40.6 mm. In general, when the electric wire flows through a current of about 1 A, the thickness of the insulating sheath also has an outer diameter of 1 mm. However, if the FPC flexible circuit board/FPC soft board of general performance is used, if the thickness of the substrate is 25um, the overall thickness is only 100140um, which fully shows the advantage of the thickness of the FPC flexible circuit board/FPC soft board. In terms of weight, the weight of the plastic matrix and the glass fiber matrix can not be compared at all.
　　 It can be seen from the above points that if the weight and volume of the product are to be reduced, it is necessary to rely on the FPC.
　　 In addition, the FPC flexible circuit board/FPC flexible board has the advantage of improving product reliability. That is, as the number of solder joints is reduced, the connector is also reduced, and the chance of failure is greatly reduced. In addition, the number of man-hours for assembly can be greatly reduced compared to the conventional substrate for one-by-one wire bonding, and many operational errors are eliminated, so that the online repair work can be greatly reduced, and the production cost can be greatly reduced.