The main purpose of flexible PCB is to diminish the use of cables as well as connectors from various electrical devices. In this way, it also proliferates the reliability of the electronic system and helps us to reduce cost by the means of saving cost. Furthermore, it also reduces the dimension of these daily life appliances. 

Flexible PCB is a combination of various circuits along with the substrate, which is flexible regarding the different applications of real life. These circuits are made by an insulating film, which is very thin and made by the means of polymer. Apart from this, conductive elements are attached on both sides of this substrate. The history of these circuits begin after world war 2 and their applications are rising day by day due to their plenty of benefits. As the name demonstrates that we can make modifications in the structure of flexible printed circuit boards regarding usage and space.

Type of flexible PCB

There are plenty of sorts in the case of flexible PCB such as single&double sided flex and it can also multiply layer, flexible board. Furthermore, we can also adjust the size as well as the shape of these circuits, which makes them more extraordinary as compared to others.

• Single-Sided Flexible PCB
• Double-Sided Flexible PCB
• Multi-Layer Flexible PCB

Advantages of Flexible PCB

There is an enormous number of benefits of these circuits in this modern era as compared to the old system.

• Flexible design: As we know from the name, this circuit can be adjusted as we change its usage in different apparatus. It can modify from single layer to double layer, single to double access, and one to multiple layers. It entirely depends on our desire and needs. That’s why it is the most suitable circuit for other categories of circuits. The most appropriate use of this type is in the complex system, where we need plenty of interconnections.

• Reduction in weight and size: Flexible PCB is very tiny in the size as compared to the cable system, which can save plenty of space. Therefore, it is very easy to adjust this circuit in any small place. As a result of this, the applications of this circuit are increasing with time. Furthermore, the weight of this modern circuit is very low regarding the previous connector and cable. 

• Durability: This factor is very essential in this modern world in the field of electronic devices. Hence, the lifespan of the electrical system relies on the circuit. Therefore, the durability of this flexible PCB is 500 million more as compared to the normal system. Moreover, it can handle high temperatures, such as 360 degrees. Thus, it can make possible the application of different in high temperature.

• Heat Dissipation: Despite being very denser circuits along with the compact device, it also has plenty of fins as well as the thermal path, which are very helpful in heat dissipation cases. Moreover, flexible circuits have double access, which could boost heat removal. 

• Reliability: Before flexible PCB, the main source of the interconnection of the device is cables along with connecting, which produced many doubts about the reliability of these systems due to plenty of failures. However, these problems overcame by the means of modern Flexible circuit boards due to less interconnection. Moreover, it constructs through the machine in this era, which reduces the chances of any error. As a result of this, we can say that reliability is no longer a concern in this case.

• Reduce cost: During the manufacturing process of this circuit, mostly we use polyimide films, which are very small in the size and easily could adjust any place. Therefore, it saves cost in the term of assembly. Besides, the number of errors is diminished due to machinery production.

The Importance of Flexible PCB  in the modern world

Due to all the above advantages, flexible PCB plays a crucial role in the progress of the modern world. Therefore, we have countless applications of this circuit in our daily life appliances. Several applications are mentioning in the following paragraphs.

1. Computer Industry

One of the important elements in the computer is flexible PCB for different tasks. For instance, we can example of hard drives on the computer. In this device, we need a flexible system for various operations in very small areas. Furthermore, it also has to stand with high temperatures due to multiply operations at the same time. All the above conditions could be meet if use flexible circuit boards in the computer system. Hence, this circuit is popular in the field of computers. Besides this, it is also used in TV, microwaves, and gaming system.

1. Automotive 

When we talk about modern vehicles then we need to mention various electronic hardware and sensors. The majority of these devices use flexible PCB for these operations, namely airbags, EMU, braking system( particularly anti-lock ), and all other electronic systems. On the contrary, engineers need to put this hardware in very small and rough places, and they also reduce weight along with the cost of Automotive. Hence, flexible PCB is very widespread in the market of vehicles. Furthermore, the demand for such types of automotive has proliferated in this era due to these facilities.

1. Smartphones

The most common example of Flexible PCB in the modern era is smartphones. In this device, engineers have a very small place, where they have to adjust a very thing. Apart from this, less weight is also an essential key point during the manufacturing process. Therefore, they can not use old hardware in this tiny place. Hence, all smartphones use these flexible boarts due to their properties. Moreover, durability is also the main factor in the phone, which we can get by the means of flexible PCB.

4. Medical Field

It is worth noticing that plenty of doctors uses these flexible devices for the betterment of human health. For example, many patients use modern pills (Camphill), which play the role of the camera in the body of a human. In this way, doctors will be able to get a report of inner body parts. Therefore, they could be able to treat the patient in the right way. From these inventions, we can imagine how important these flexible in our life.