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PCB Tech

PCB Tech

PCB Tech

PCB Tech

Multi-layer impedance PCB circuit board quick proofing
2021-08-26
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Author:Belle

Fpc soft board is also called flexible circuit board, flexible circuit board, and flexible circuit board. Referred to as soft board or FPC, it is compared with ordinary hard resin circuit boards, fpc soft board has the advantages of high wiring density, light weight, thin thickness, less wiring space restriction, and high flexibility. Fast proofing of multi-layer impedance PCB circuit board in Xi'an
The market for the circuit board sector is constantly developing, which is mainly due to two driving forces. First, the market space of the circuit board application industry continues to expand, and the application of the communication industry and the notebook computer industry has increased, making the high-end multi-layer circuit board market grow very rapidly, and the current application ratio has reached 50%. At the same time, the proportion of digital circuit boards used in color TVs, mobile phones, and automotive electronics has also increased significantly, thereby expanding the space of the circuit board industry. Furthermore, the global circuit board industry is shifting to my country, which has also led to the rapid expansion of my country's circuit board market space. The revenue data released by the US PCB manufacturer (PCB pure-plays) reveals a market environment with growing demand: In the past year, the PCB order-to-shipment ratio has been steadily greater than one. On the other hand, due to the fierce competition in the PCB industry, some PCB manufacturers actively develop new technologies, increase the number of PCB layers or promote the process of FPC marketization with high technical requirements to meet the changing market needs; at the same time, through technology The “suppression” on the market has forced some uncompetitive small manufacturers to withdraw from the market. This is also a hidden worry for a large number of small PCB manufacturers when the market is very good this year. Xi'an Multilayer Impedance PCB Circuit Board
As the application range of FPC becomes wider and wider, FPC is being widely used in the fields of computer and communication, consumer electronics, automobile, military and aerospace, medical treatment, etc. Therefore, the market demand has increased significantly. According to dealers, this year’s FPC shipments are also significantly higher than in previous years. With continued gross profit margins, dealers have shown confidence to invest in this market.
With the development of the electronics industry, a fully printed electronic technology using additive method has emerged. The additive method has the advantages of saving materials, protecting the environment, and simplifying procedures. Because it uses inkjet printing as the main technical means, There are new requirements for the properties of inks and bulk materials, mainly as follows:
(1) Control the viscosity of the ink to ensure that it can be ejected continuously through the nozzle to prevent it from clogging the head;
(2) Control the curing reaction speed to achieve rapid initial curing and prevent the ink from spreading on the substrate due to infiltration;
(3) Adjust the thixotropy of the ink to ensure the quality and repeatability of the printed circuit. For the development of low-viscosity solder mask inks, the modification of traditional solder mask materials is mainly used, supplemented by the requirement of active or inactive degree. Xi'an multi-layer impedance PCB circuit board proofing.

 Multilayer Impedance PCB Circuit Board

What are the characteristics of FPC circuit boards
1. High density, light weight and high flexibility
The FPC circuit board is made of high-quality polyester film and other flexible substrates. It not only has the characteristics of high wiring density and light weight, but also has the advantages of bendability and high flexibility. It will damage the wires of the FPC circuit board, and at the same time, it can be moved and expanded arbitrarily according to the requirements of the space layout to realize the three-dimensional assembly of the FPC circuit board. Xi'an Multilayer Impedance PCB Circuit Board
Second, the installation is simple and consistent
The FPC circuit board not only has the characteristics of light weight and space saving under the same current capacity, but also has the outstanding characteristics of assembly and connection consistency. According to the well-known Shenzhen fpc soft board manufacturer, the fine production of the FPC circuit board is easy to install and connect. , There will be no electronic failure due to wrong connection when installing the connecting line, and it can achieve the integrated effect of Shenzhen FPC circuit board components and wire connections.
Multilayer board
Multi-Layer Boards In order to increase the area that can be wired, multi-layer boards use more single or double-sided wiring boards. Use one double-sided as the inner layer, two single-sided as the outer layer, or two double-sided as the inner layer and two single-sided as the outer layer of the printed circuit board. The positioning system and the insulating bonding material alternately together and the conductive pattern Printed circuit boards that are interconnected according to design requirements become four-layer and six-layer printed circuit boards, also known as multilayer printed circuit boards. The number of layers of the board does not mean that there are several independent wiring layers. In special cases, empty layers are added to control the thickness of the board. Usually, the number of layers is even and includes the two layers outside the ***. Most of the motherboards have 4 to 8 layers of structure, but technically, it is possible to achieve nearly 10 layers of PCB boards. Most large supercomputers use fairly multi-layered motherboards, but because these types of computers can already be replaced by clusters of many ordinary computers, super-multilayered boards have gradually ceased to be used. Because the various layers in the PCB are tightly integrated, it is generally not easy to see the actual number, but if you look closely at the motherboard, you can still see it.