PCB Technical - A good PCB must meet the performance needs of users

he PCB industry has developed for such a long time, and now there have been some new changes in PCB design. One is more miniaturization, mainly driven by the demand for portability of smart devices; the other is the change of PCB from a traditional rigid board to a flexible and hard board. And as the PCB moves towards the high-end, there will be two main aspects, one is the higher and higher data carrying and transmission rate, and the other is for smart homes and wearable devices, where the demand for HDI becomes more and more obvious.

Users have higher and higher requirements for PCBs, with higher speed, smaller size, and faster time to market. These are both challenges and opportunities for PCB design. For customers, on the premise of meeting performance indicators, it is best to have a faster design delivery time.

And a good PCB needs to meet the signal integrity, power integrity and electromagnetic compatibility design, which is mainly reflected in the circuit performance. At the level that the user can see with the naked eye, an excellent PCB work should be densely spaced, neat and symmetrical, and take into account the aesthetics of the layout. At the same time, it takes into account the user's operating habits, such as the reasonable layout of the sockets on the panel, which is convenient for plugging and unplugging, and there are clear safety instructions.

According to industry standards, a good PCB must first meet the performance needs of users, and at the same time, it can also meet the standard in terms of reliability, and it is best to have a certain advantage in cost. Of course, for different products, the emphasis on the above three points will be different.

At present, due to the shortage of chips and the price increase lasting for a long time, many domestic electronics companies have responded by localizing or replacing chips. A large number of products require PCB revision designs. Some PCB factories have also promoted many companies and universities through free proofing. The enthusiasm of the teachers and students for PCB proofing has brought a certain degree of growth to the PCB manufacturing market.

Although the demand for PCBs in new energy vehicles has greatly increased, due to the use of large-capacity batteries in new energy vehicles, the current in the circuit becomes larger, current-carrying design and thermal design have become critical, and reliability is more important for PCBs. Design, but from the performance point of view, the point that affects the reliability the most is heat. Therefore, it is necessary to control the heat from the IC package, through the PCB, to the complete product under the operating environment.

In addition, new energy vehicles are also equipped with technologies such as autonomous driving, radar, and smart cockpits. Compared with traditional cars, the PCB design is much more complicated, and to achieve these rich functions, the speed requirements of the signals carried by the PCB will be higher., And there may be a demand for HDI boards in smart cockpits. At the same time, new energy vehicles are usually equipped with many camera modules, which requires more rigid and flexible boards.

In addition to new energy vehicles, high-end PCB manufacturing for integrated circuit supporting industries, such as semiconductor testing equipment, will usher in a rapid growth process in the future, and this field was mainly occupied by the United States, Japan, South Korea and other countries in the past.

In the field of display technology, especially the next generation of active light-emitting LEDs, the backlight module is usually as large as the screen, and the PCB is as large. And this kind of display device is usually used in fields such as monitoring large screens and outdoor advertising screens, and the market demand is currently rising.