What is a Regid and flexible board

The birth and development of FPC and PCB gave birth to a new product of Regid and Flexible board. Therefore, the rigid-flex board is the flexible circuit board and the rigid circuit board. After pressing and other processes, they are combined according to the relevant process requirements to form a circuit board with FPC characteristics and PCB characteristics.

Advantages of rigid-flex board

• Realize three-dimensional assembly, save assembly space, and make electronic products more compact and lighter.
• The design of the rigid-flex board can use a single component to replace the composite printed circuit board connected by multiple connectors, multiple cables and ribbon cables, with stronger performance and higher stability.
• Combined with HDI technology, the design space of rigid-flex board has gradually opened up.

In summary, with the rapid development of digital products and the continuous development of printed circuit board technology, the rigid-flex board will become more competitive.

Application

• Industrial application
  Industrial applications include rigid-flex boards for industrial, military and medical applications. Most industrial parts require accuracy, safety, and non-fragility. Therefore, the required characteristics of soft and hard boards are: high reliability, high precision, low impedance loss, complete signal transmission quality and durability. However, due to the high complexity of the process, the output is small, and the unit price is quite high.
• Mobile
  In the application of mobile phone software and hardware boards, the common ones are folding mobile phone corners, camera modules, keyboards, radio frequency modules, etc.
• Consumer electronics
  Among consumer products, DSC and DV are representative of the development of regid -flex boards, which can be divided into two main axes: performance and structure. In terms of performance, regid -flex boards can connect different PCB regid boards and components in three dimensions. Therefore, under the same line density, the total use area of ​​the PCB can be increased, its circuit carrying capacity can be relatively improved, and the signal transmission limit of the contacts and the assembly error rate can be reduced. On the other hand, because the rigid and flexible board is light and thin, it can be bent and wired, so it is very helpful to reduce the volume and weight.
• Car
  In the use of car regid -flex boards, it is usually used to connect the buttons on the steering wheel to the main board, the connection between the vehicle video system screen and the control panel, the operation connection of the audio or function keys on the side door, and the reversing radar image system sensor (including Air quality, temperature and humidity, special gas regulation, etc.), vehicle communication system, satellite navigation, rear seat control panel, front controller connection board, vehicle external detection system, etc.

Development trend

In the era of the Internet of Everything, driven by 5G, HDI and RFPCB, as the two relatively advanced products of the PCB industry, have seen continuous growth in market demand in recent years.

Rigid and flexible boards were first used in the field of battery modules. Now looking at all mobile phone brands in the world, it is a consensus to use rigid and flexible boards for batteries, and it may become a long-term trend. At the same time, in order to accommodate more lenses in a smaller and smaller space, mobile phone lens modules have also begun to use soft and hard combination boards. Currently, Korean and Chinese brand mobile phones use soft and hard combination boards as the mainstream lens technology. It has also gradually expanded to other mobile phone modules such as displays. As for the characteristics of lightweight and multi-functional wearable devices, it is naturally expected to become the next application for the large-scale introduction of rigid and flexible boards.

In the future, the chances of seeing a combination of Regid-flex boards in other consumer electronics products will only increase. Some industry players have revealed that the IoT products they see now, including smart speakers and other smart home appliances, may be due to their design and For cost requirements, a combination of Regid-flex boards is used in specific functional modules.

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