Double-faced flexible PCB (Printed Circuit Board)

Abstract

The invention discloses a double-faced flexible PCB (Printed Circuit Board). The double-faced flexible PCB comprises a main circuit board, main lines, testing lines, testing points, fixed hole sites,a connector, a substrate and protection films, wherein one protection film is attached on each of upper and lower surfaces of the main circuit board; the substrate is arranged at the middle part of the main circuit board; on a plane layout, the plurality of fixed hole sites are arranged at one end of the main circuit board, the plurality of main lines are arranged in the middle and the two testinglines are further arranged; one connector is arranged at the other end of the main circuit board; the testing points are arranged at two ends of each testing point. According to the double-faced flexible PCB disclosed by the invention, the testing lines with the folding resistance which is slightly lower than copper is added, and whether the folding resistance of a whole board of the flexible printed circuit board is influenced or not can be judged, so that poor-quality products are eliminated. Furthermore, the hole sites are improved, so that the stability of the flexible printed circuit board in the aspect of fixed connection can be further improved.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a double-sided flexible PCB board with enhanced connection stability and capable of eliminating circuit boards whose service life is nearing the end. Background technique [0002] Flexible circuit board is a kind of highly reliable and excellent flexible printed circuit board made of polyimide or polyester film as the base material. It has high wiring density, light weight, thin thickness, bending Sexual characteristics. [0003] Multi-layer flexible circuit boards have the advantages of high assembly density, small size, and light weight. Because of high-density assembly, the connection between components (including parts) is reduced, thereby increasing reliability; it can increase wiring layers, and then increase design flexibility. ; It can also constitute the impedance of the circuit, can form a certain high-speed transmission circuit, can set the circuit, electromagneti...

AI Technical Summary

Problems solved by technology

[0004] The advantage of the flexible board is that it can be assembled to the place that needs to be bent, but its performance is affected by the number of bending times and the environment in which it is located. In many cases, it cannot be used repeatedly, and it can be found that the design of the flexible board is relatively simple. line

At present, the design of many circuits is based on the design of existing packaged devices. There will also be problems in the soldering of devices on the flexible plate. It is necessary to ensure the bendability of the board and ensure good soldering of the devices. There is a contradiction between the two. of

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