Fpc is also called flexible circuit board, flexible circuit board and flexible circuit board. Referred to as flexible board or fpc, FPC flexible board has the advantages of high wiring density, light weight, thin thickness, less limitation of wiring space, high flexibility, etc. compared with common hard resin circuit board. Rapid proofing of Xi ‘an multilayer impedance PCB circuit board
The market of PCB is developing constantly, which is mainly due to two driving forces. First, the market space of circuit board application industry continues to expand, and the application of communication industry and notebook computer industry is promoted, which makes the high-end multilayer circuit board market grow very rapidly, and the application ratio reaches 50% at present. At the same time, the proportion of digital circuit boards for color TV sets, mobile phones and automotive electronics has also increased significantly, thus making the space of circuit board industry expand continuously. Furthermore, the global PCB industry is shifting to China, which also leads to the rapid expansion of China’s PCB market space. The revenue data released by PCB pure-plays in the United States reveals a market environment with increasing demand: in the past year, the order-to-shipment ratio of PCB was more 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 marketization process of FPC with high technical requirements to meet the changing market demand; At the same time, through technical “suppression”, some uncompetitive small factories were forced to withdraw from the market, which is also the worry of most small PCB factories in this year’s booming market. Xi ‘an multilayer impedance PCB circuit board
As the application range of FPC is more and more extensive, it is being widely used in computer and communication, consumer electronics, automobile, military and aerospace, medical treatment and other fields, so the market demand is obviously increasing. According to the dealers, this year’s FPC shipments are also significantly higher than in previous years. With the gross profit margin maintained, dealers have shown confidence in focusing on investing in this market.
With the development of electronic industry, a full-printed electronic technology using additive process has emerged as the times require. The additive process process has the advantages of saving materials, protecting the environment, simplifying working procedures, etc. Because it uses inkjet printing as the main technical means, it has new requirements for the properties of ink and bulk materials, mainly as follows:
(1) control the viscosity of the ink to ensure that it can be continuously sprayed through the nozzle to prevent it from blocking the meeting;
(2) controlling the curing reaction speed, realizing quick initial curing, and preventing the ink from spreading on the substrate due to infiltration;
(3) Adjust the thixotropy of ink to ensure the quality and repeatability of printed circuit. For the development of low viscosity solder resist ink, the traditional solder resist material is mainly modified, supplemented by the requirement of activity or inactivity. Xi ‘an multilayer impedance PCB circuit board proofing.
What are the characteristics of FPC boards?
First, high density, light weight and high flexibility
The FPC board is made of high-quality polyester film and other flexible substrates, which not only has the characteristics of high wiring density and light weight, but also has the advantages of flexibility and high flexibility. Even if it bears millions of times of dynamic bending, it will not damage the wires of the FPC board. At the same time, it can move and stretch at will according to the requirements of spatial layout, thus realizing the three-dimensional assembly of the FPC board. Xi ‘an multilayer impedance PCB circuit board
Second, the connection is simple and consistent.
Fpc not only has the characteristics of light weight and space saving under the same current carrying capacity, but also has the outstanding characteristics of assembly and connection consistency. According to the introduction of well-known FPC flexible board manufacturers in Shenzhen, the refined FPC boards are easy to assemble and connect, and there will be no electronic failure caused by misconnection when connecting wires, and it can achieve the integration effect of Shenzhen FPC circuit board devices and wires.
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Multi-Layer Boards In order to increase the area that can be wired, multi-layer boards use more single-sided or double-sided wiring boards. A printed circuit board with double-sided as inner layer, two single-sided as outer layer, or two double-sided as inner layer and two single-sided as outer layer, which is alternated by positioning system and insulating adhesive materials and interconnected by conductive patterns according to design requirements, becomes a four-layer and six-layer printed circuit board, also known as multilayer printed circuit board. The number of layers of the board does not mean that there are several independent wiring layers. In special cases, empty layers will be added to control the thickness of the board. Usually, the number of layers is even, and it contains two layers outside * * *. Most motherboards are 4-8 layers, but technically, nearly 100 layers of PCB can be achieved. Most of the large supercomputers use quite multi-layer motherboards, but because these computers can be replaced by clusters of many ordinary computers, the super multi-layer boards are gradually out of use. Because all the layers in PCB are closely combined, it is generally not easy to see the actual number, but if you carefully observe the motherboard, you can still see it. Xi ‘an multilayer impedance PCB circuit board
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