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They are all circuit boards. Why are FPC circuit boards more popular than PCBs?

Industry News|2022-02-20| admin

  FPC (flexible circuit board) is a type of PCB, also known as "soft board". The FPC circuit board is made of flexible substrates such as polyimide or polyester film. It has the advantages of high wiring density, light weight, thin thickness, bendability, and high sensitivity, and can withstand millions of dynamic bends without damage. Wires can move freely and elastically according to the spatial layout requirements, complete three-dimensional assembly, and achieve the integration of component assembly and wire connection, which has incomparable advantages over other types of circuit boards.

  Application of FPC circuit board:

  Mobile phone: Focus on the light weight and thin thickness of the flexible circuit board. It can effectively save the volume of the product, and it is easy to connect the battery, the microphone, and the button.

  Computer and LCD screen: Using the integrated circuit equipment of the flexible circuit board and the thin thickness, the digital signal is converted into a picture and appears through the LCD screen;

  CD Walkman: Focusing on the three-dimensional assembly characteristics and thin thickness of the flexible circuit board, turning a huge CD into a good companion to carry around;

  Disk drive: Whether it is a hard disk or a floppy disk, it relies on the high flexibility of FPC and the ultra-thin thickness of 0.1mm to complete the fast reading of materials, whether it is PC or NOTEBOOK;

  The latest use: the components of the suspension circuit and package board of the hard disk drive (HDD, hard disk drive).

  The future of FPC

  Based on the broad prospects of my country's FPC, large enterprises in Japan, the United States, and Taiwan have already set up factories in my country. By 2012, flexible circuit boards were the same as rigid circuit boards and achieved great development. However, if a new product follows the principle of "start-development-climax-decline-elimination", FPC is now in the area between the climax and decline. Before there is no product that can replace the flexible board, the flexible board will continue to occupy the corresponding share. , it is necessary to innovate, and only innovation can make it jump out of this vicious circle.

  So, what aspects will FPC continue to innovate in the future? Mainly in four aspects:

  1. Thickness. The thickness of the FPC must be more sensitive, and it must be thinner;

  2. Folding resistance. The ability to bend is an inherent characteristic of FPC. In the future, the folding resistance of FPC must be stronger, and it must exceed 10,000 times. Of course, this requires a better substrate;

  3. Price. At this stage, the price of FPC is much higher than that of PCB. If the price of FPC comes down, it will definitely be much larger.

  4. Technological level. In order to meet various requirements, the FPC process must be upgraded, and the minimum aperture and minimum line width/line spacing must meet higher requirements.

  Therefore, the relevant innovation, development and upgrading of FPC from these four aspects can make it usher in the second spring!

  PCB (Printed Circuit Board), Chinese name is printed circuit board, referred to as printed circuit board, is one of the important components of the electronics industry. Almost every electronic device, ranging from electronic watches and calculators to large computers, communication electronic equipment, and military weapon systems, as long as there are electronic components such as integrated circuits, printed boards must be used for the electrical interconnection between them. . In larger electronic product discussions, the most fundamental success factor is the design, documentation, and production of the product's printed board. The design and production quality of printed boards directly affect the quality and cost of the entire product, and even lead to the success or failure of business competition.

  The role of PCB

  After the electronic equipment adopts the printed board, because of the consistency of the same type of printed board, the error of manual wiring is avoided, and the active insertion or mounting of electronic components, active soldering, and active detection can be completed, which ensures the quality of the electronic equipment. , improve labor productivity, reduce costs, and facilitate maintenance.

  Development of PCB

  Printed boards have developed from single-layer to double-sided, multi-layer and flexible, and still maintain their own development trends. Due to the continuous development in the direction of high precision, high density and high reliability, continuous reduction of volume, cost reduction and improvement of performance, printed boards still maintain strong vitality in the development of future electronic equipment.

  Summarizing the domestic and foreign theories on the development trend of future printed board production technology are basically the same, that is, to high density, high precision, fine aperture, fine wire, fine pitch, high reliability, multi-layer, high-speed transmission, light weight, The thin-type development is aimed at improving productivity, reducing costs, reducing pollution, and adapting to the direction of multi-variety and small-batch production. The technical development level of printed circuits is generally represented by the line width, aperture, and board thickness/aperture ratio on the printed board.


  In recent years, the market of consumer electronics products, led by mobile electronic devices such as smartphones and tablet computers, has increased rapidly, and the trend of miniaturization and frivolity of devices has become more and more obvious. It follows that traditional PCBs have been unable to meet the requirements of products. For this reason, major manufacturers have begun to discuss new technologies to replace PCBs. During this period, FPC, as the most popular technology, is becoming the primary connection of electronic equipment. Accessories.

  In addition, the rapid rise of new consumer electronics products such as wearable smart devices and drones has also brought new growth space for FPC products. At the same time, the trend of display and touch control of various electronic products has also made FPC enter a wider application space with medium and small-scale LCD screens and touch screens, and the market demand is increasing day by day.

  The latest report shows that in the future, flexible electronic technology will drive the scale of trillions, which is an opportunity for my country to strive for the leap-forward development of the electronic industry, and can become a national pillar industry.

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