Needless to say, 2018 will be a good year for LED small-pitch displays. From the beginning of the year, COB packaging technology has attracted attention, and recently LED display industry companies have launched MINI LED products. The explosion of MINI LED technology has been a hot topic. The topic, this not only shows that the LED display manufacturers attach great importance to the small pitch of the LED, but also means that the small-pitch display technology is striding forward and has made remarkable achievements. So, when small distances rush through the entire LED display industry with lightning speed, MINI LED and COB as the most cutting-edge, most mature small-pitch technology, who will be better and win the favor of the market?

Four-in-one packaging technology has been breakthrough MINI LED successfully landed

          In mid-June, many companies have introduced a new generation of small pitch LED display products - MINILED. As we all know, MINI LED is the application of LED crystals with particle sizes of 100 microns or less. This smaller crystal particle is almost the traditional 300 micron size. One-tenth of the consumption of LED crystal particle raw materials. Smaller-sized MINI LEDs save upstream costs, reduce the pixel pitch of downstream terminals, and achieve a very small pitch display with 0.2-0.9mm pixel particles, but this also means that they pose even higher technical challenges for midstream packaging technology. . The new generation of MINI LED products can be successfully grounded, precisely because the breakthrough in the mid-range packaging technology challenges, to achieve the application of four-in-one array packaging technology.

          The four-in-one package technology can be considered as a compromise between traditional surface-mount lamp beads and COB products: There are four basic pixel structures in a package structure. This not only simplifies the technical process, reduces the “surface mount” soldering difficulty, but also helps the repair of the small-gap LED display light, and even meets the need for manual repair in the field. In addition, with the help of the four-in-one technology, the surface-mounting process still shows itself. Nowadays, for a 1.0-pitch surface-mount technology, a minimum 0.6-pitch LED display can be manufactured, largely inheriting the LED display. The industry's most mature process realizes the "low cost" of terminal processing. At the same time, four-in-one packaging technology as a "smaller crystal particles of the LED" display technology, not only supports a more sophisticated display screen, to break the bottleneck of long-standing mainstream products, but also effectively overcome the LED display pixel granulation Other challenges will greatly enhance the solidity of the entire screen and bring a better visual experience to the audience. 

          It can be seen that the four-in-one package technology not only reduces R&D costs, but also significantly increases the display effect and experience. This has also become an important core factor for the success of four-in-one technology in the market, and it helps four-in-one. Technology is expected to become a "dark horse" in the field of small pitch display. 

COB packaging technology attracts attention to development prospects 

          COB technology also serves as an emerging LED packaging technology. Unlike traditional SMD surface-mount packages, he integrates light-emitting chips in PCB boards, effectively improving the luminous color of LED displays, and reducing risks and costs. Effect. It is understood that the small-pitch LED display using COB packaging technology has been called the second generation of small-pitch LED products. The pixel pitch is between 2mm and 0.5mm, which is the future of LED small pitch high-definition display. Especially from this year onwards, the COB small-pitch LED display market has shown a trend of rapid growth, known as the "darling" of some high-end smart dispatch centers.

          Of course, the reason COB packaging technology can receive such great attention can not be separated from the unique advantages of its application in small-pitch LED displays. Such as COB package, no longer need the traditional "SMT" process, due to omitting a high-temperature high-precision process, thereby enhancing the reliability of the entire system; In addition, COB technology applications under the small-pitch LED products, natural "non-particle “Display”, the uniformity of the image quality, the color curve, and the viewing angle effect have been improved to varying degrees, and the COB packaging technology has also become the best technical path for improving the “visual comfort” and “experience” of the small-pitch LED. . The data shows that in 2017, the sales volume of COB small-pitch LED screens increased by more than 200%, which is nearly 4 times that of the entire small-pitch LED market. 

Industrial upgrading Technology needs continuous improvement 

          Although both the MINI LED technology and the COB technology are constantly improving, and gradually becoming mature, but at this stage, both have certain limitations. For COB technology, the cost of R&D technology is still too high. Currently, it is mainly used in high-end indoor command and dispatch systems and other "not bad money" areas, and can not occupy the entire LED display market on a large scale; four-in-one technology also has The disadvantage is that in the packaging stage, the display product pixel pitch of the final product has been determined, which makes the middle package enterprise must provide more specifications of the four-in-one lamp, which requires the upstream and downstream industry chain cooperation more closely.  

           On the whole, if MINI LED technology and COB technology complement each other, it will provide customers with more perfect choices, and the coexistence of a variety of new technologies will certainly play a significant role in promoting the development of the industry, but the narrow road meets Winners win, just like the original DIP technology to surface-mount technology, only the smaller pitch technology that is more suitable for the market can win the huge small-pitch market and become the mainstream of the industry development. So, who can do better with MINI LED and COB? let us wait and see.