Table of Contents
1. Flexible circuit board basic introduction
2. some of the main advantages of flexible printed circuit boards
2.1 Flexibility
2.2 Reduce weight and space
2.3 Suitable for harsh environments
2.4 Better thermal management
2.5 Cut costs
1. Flexible circuit board basic introduction
According to IPC’s TMRC data in June 1994, in the late 1980s, the output value of flexible circuit boards was 400 million US dollars per year, and it was developing at an annual growth rate of 6-7%. In 1994, it was about 1.5 billion US dollars. By 1997 The output value is estimated to be 1.7 billion U.S. dollars, and the average annual growth rate of applications in computers and communication equipment is about 11%, but the flexible board accounts for about 8% of the entire PCB market.
FPC(flexible PCB circuit boards) is a printed circuit made of flexible insulating substrate, which has many advantages that rigid printed circuit boards do not have.
The product is small in size, light in weight, and greatly reduces the volume of the device. It is suitable for the needs of electronic products to develop in the direction of high density, miniaturization, light weight, thinness, and high reliability. It has a high degree of flexibility and can be bent, wound, and twisted freely. Foldable, three-dimensional wiring, arbitrarily arranged according to the space layout requirements, change the shape, and move and expand in the three-dimensional space arbitrarily, so as to achieve the integration of component assembly and wire connection.
The dimensional change of the non-adhesive flexible board substrate is affected by the temperature. Good full-inch stability will be of great help to the fine-line manufacturing process, and finer lines can be made. The future development direction is to prohibit toxic substances such as halogen and lead in products. Since the adhesive-free substrate does not use adhesives, there is no need to use halogen-containing fuels: at the same time, it can meet the requirements of lead-free high-temperature processes. Is the best choice
It has excellent electrical properties, high temperature resistance, and flame resistance. Stable chemical changes, good stability, and high reliability. It has higher assembly reliability, which provides convenience for circuit design, and can greatly reduce assembly workload, and it is easy Ensure the performance of the circuit and reduce the cost of the whole machine. Increase its strength by using reinforced materials to obtain additional mechanical stability. The design of the combination of soft and hard also compensates for the load-bearing capacity of the flexible substrate to a certain extent. Slightly insufficient.
Various electronic devices plays an important role in our daily lives, ranging from mobile phones to computers. Most of these devices usually needs printed circuit boards, because without it, most of these electronic devices will not work properly. There are several types of PCB, each with its own advantages. Flexible circuit boards are one of the most common circuit boards, and flexible PCBs bring plenty of convinience to our life
2. Some of the main advantages of flexible printed circuit boards
2.1 Flexibility
The main advantages of flexible circuit boards are the flexibility and bending capabilities. Therefore, they can be manipulated in various ways to fit edges, folds and creases. The flexibility of the circuit board also means that it is more reliable and durable than the ordinary PCB, because it can reduce the impact of vibration, and there are few wiring on the circuit board. Minimal wiring eliminates the need for interface connections, such as solder joints, contact crimping and connectors.
2. 2 Reduce weight and space
Compared with other solutions, flexible printed circuit boards can not only provide greater design freedom, but also provide better space utilization and weight efficiency. The flexible printed circuit board is thin and light, which can greatly reduce weight and space. For smaller devices, these flexible plates can be folded, crease and placed in a smaller area to make the device miniaturized. This makes flexible circuit boards more suitable for small devices because they can be installed where rigid circuit boards can not be mounted.
2.3 Suitable for harsh environments
Flexible circuit boards can be made of various corrosion-resistant materials and can withstand harsh environments. These materials can be waterproof, shockproof, moisture-proof and even corrosion-resistant. Therefore, these flexible boards are widely used in military and medical applications due to their tough and durable qualities. The natural flexibility of the board can also better absorb shocks
2.4 Better thermal management
Today’s electronic products such as LCD, PDP, COF substrates, etc. require thinning, high density, high size stability, high temperature resistance and reliability. Therefore, under the development of electronic products gradually becoming lighter, thinner and shorter, non-adhesive soft boards will become The mainstream of the market is gradually replacing the three-layer rubberized soft board substrate. Traditional soft board materials are mainly based on the three-layer structure of polyimide film/adhesive/copper foil, but the heat resistance and dimensional stability of the adhesive are not good, and the long-term use temperature is limited to 100~200℃. This makes the field of three-layer rubberized soft board substrates restricted. The choice of non-adhesive soft board substrates can achieve the following purposes: Since the non-adhesive flexible board substrate does not have a poorly heat-resistant adhesive, it has excellent heat resistance. Long-term use temperature can reach more than 300 degrees
The flexible circuit board is made of polyimide, which has excellent thermal stability and can withstand extremely high temperature. This means that the heat dissipation performance makes the board a better basis for surface mounting and is less likely to undergo thermal expansion and contraction. The flexible board can also dissipate heat faster than other solutions, thereby increasing its thermal efficiency.
2.5 Cut costs
SHENZHEN KINGFORD TECHNOLOGY CO.,LIMITED can help reduce flex pcb assembly costs in many ways. The polyimide material of the PCB is thin and light, which means that it requires less space.Since the flexible board eliminates the need to route wires to solder joints and connectors, as the number of components required is reduced, assembly costs are further reduced. Furthermore,By reducing the number of components and wires on the board, testing and rework time can be reduced, which greatly improve productivity and efficiency.
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