1. Regarding the PCB circuit board, it is the so-called printed circuit board (printed circuit board), which is usually called a hard board. It is the support body among electronic components and is a very important electronic component. PCB circuit boards generally use FR4 glass fiber board as the base material, also called hard board, which cannot be bent or flexed. PCB circuit boards are generally used in some places that do not need to be bent but have relatively strong strength, such as computer motherboards, mobile phone motherboards, etc.
2. FPC is actually a kind of PCB circuit board, but it is very different from traditional printed circuit boards. It is called a soft board, and its full name is a flexible circuit board. FPC generally uses PI as the base material, which is a flexible material that can be bent and flexed arbitrarily. FPC generally requires repeated bending and the link of some small parts, but now it is more than that. At present, smart phones are trying to prevent bending, which requires the use of FPC, a key technology.
3. In fact, FPC is not only a flexible circuit board, but also an important design method for connecting three-dimensional circuit structures. This structure can be combined with other electronic product designs to create a variety of different applications. Therefore, from this From this point of view, FPC and PCB circuit boards are very different.
4. For PCB circuit boards, unless the circuit is made into a three-dimensional form by filling film glue, the circuit board is generally flat. Therefore, to make full use of the three-dimensional space, FPC is a good solution. As far as hard boards are concerned, the current common space extension solution is to use slots and add interface cards, but FPC can make a similar structure with a transfer design, and it is also more flexible in directional design. Using one connecting FPC, two hard boards can be connected into a parallel line system, and can also be turned into any angle to adapt to different product shape designs.
5. Of course, FPC can use terminal connection method for line connection, but it can also use soft and hard boards to avoid these connection mechanisms. A single FPC can be configured with many hard boards and connected by layout. This approach reduces the interference of connectors and terminals, which can improve signal quality and product reliability.
