Micro high-definition LED full-color screen will create ultra-fine pitch

Micro HD LED full-color screens will create ultra-fine pitches. Micro HD LED full-color screens have higher definition than small-pitch LED full-color screens. Micro-vision distances can be created through highly integrated solutions. At present, the competition for conventional series LED full-color screens has become highly competitive. Innovation Become the first priority for LED screen manufacturers to build core competitiveness. Many occasions require ultra-high-definition LED full-color screens for video conferencing, real-time monitoring, product display, etc., especially when LED full-color screens need to be divided into many screens. The advantages are highlighted. In September 2017, news came from the Ministry of Science and Technology: As the development direction of high-definition LEDs in the future, micro-electronics has won the national "13th Five-Year Plan" key scientific research project-strategic advanced electronic materials? New display project funding, the main task is to break through the traditional The deficiencies and limitations of high-definition LED display technology. Relying on its significant advantages, Micro has won the choice of major international manufacturers, the recognition of the upstream industry and the support of the government, making Micro technology inevitably the key development direction of high-definition LED products in the future.

——This is the core reason why the industry calls Weiwei the second-generation product of high-definition led full-color screens. Regarding the high-definition LED full-color screen of micro technology, there are many "misunderstandings" in the market at present. On the one hand, many people think that this is an "expensive" technology; on the other hand, many people think that the patch technology is "enough", and the new technology may not have much future.

However, since 2016, the development of micro-HD, especially the development of the high-end market, has shown that "there is no limit to technological innovation"! As a manufacturer, when choosing a technical route, the future development space is a very important factor. With the development of color screens towards higher definition, SMD technology has encountered a bottleneck, and micro technology has obvious advantages in realizing small/micro-pitch LED full-color screens. Domestic LED packaging and testing companies have entered a large-scale production expansion cycle since the second half of 2015. A considerable part of the new capacity is arranged in micro-packaging technology.

This is not only because of the accelerated development of LED display applications, including lighting applications, backlight applications for mobile phones and TVs, etc., have also entered the era of microchip-scale packaging. At the level of basic LED wafer manufacturers, the development of small-particle high-brightness crystals is also increasingly abundant. Taiwanese enterprises attach great importance to the latter's market potential, and believe that MIN-LED technology will be one of the main directions of short-term LED application incremental market.

It can be said that the rise of microtechnology is not the result of a single individual, but the resonance of the entire industry chain. From upstream chip and packaging to downstream applications, as well as equipment and material manufacturers, they are all supporting the development of micro products. The overall optimism of the industry chain must mean that micro-technology has its unique advantages-these advantages are also the key to the rapid landing of micro-products in the large-screen market.

As the development direction of the LED full-color screen industry in the future, smaller crystal particles on high-definition products are an unavoidable proposition. The advancement of LED lighting technology is enough to allow smaller LED crystal particles to have sufficient brightness, lower heat generation, and meet the needs of large-screen displays. To integrate smaller LED crystal particles, it is obvious that micro-encapsulation technology is more suitable than the traditional engineering route of "beads first and then chips".

The micro-technology using the chip-level packaging process essentially directly replaces the two-step process of "SMT process first packaging into lamp beads and then SMT" with packaging. As a more simplified engineering method, its cost change is more controllable under the same application scale, especially when facing "smaller and smaller" pixels. That is to say, if the SMD chip can still rely on the price advantage on the P1.5 pitch product, then on the P1.0 and below pitch products, the relatively small cost advantage of the SMD chip will be reversed.

This is the simplification of the entire engineering process and the advantages brought by direct large-scale packaging of LED crystals at the chip level. Micro-high-definition LED technology is conducive to the control of the dead pixel rate under the condition of extremely high-definition and a large number of lamp beads. With less than one-tenth of the dead pixel rate of the SMD chip placement process, to achieve higher reliability of the product and to realize the market application of high pixel density products, micro-technology does its part.

Through chip-level packaging, micro-encapsulation has obtained better video optical performance, more comfortable and soft picture quality, and no obvious pixel graininess, and is more suitable for "closer distance", "indoor ambient light", "longer time Long-term viewing" and other conditions. For audiovisual engineering, visual experience is also an important "choice point". Micro HD technology is characterized by chip-level packaging and full coverage of optical resin.

Compared with traditional SMD lamp beads, this structure has a great difference in picture quality. "For LED full-color screen applications, especially command and dispatch centers, stability and reliability are the core requirements." It is precisely this that gives Microtech an absolute voice in the high-end high-definition LED application market. First of all, the micro-technology LED full-color screen is better in stability.

On the one hand, microtechnology is chip-level packaging, and the LED crystal particles directly contact the PCB board (whether it is front-mounted or flipped), which increases the available heat dissipation conduction area of ​​​​the LED crystal and improves the heat dissipation capacity. At the same time, this chip-level packaging method is "completely covered", that is, a layer of 100% protective armor is put on the LED crystal, which is beneficial to moisture-proof and bump-proof. On the other hand, micro-encapsulation technology does not require the reflow soldering process of SMD LED full-color screen products.

The reflow soldering process is a higher temperature soldering process. LED crystals are temperature sensitive. The reflow soldering process is actually the biggest factor for the dead light of SMD LED products and the life reduction of lamp beads.

It is precisely because the reflow soldering process is not required, so its dead light rate is only less than one-tenth of that of the SMT process, and the stability is greatly improved. The high brightness of led full color screen is its advantage, but it is also the disadvantage of indoor application. High-brightness glare, high-frequency refreshing dizziness, and the graininess of the lamp bead patch make the LED full-color screen "easy to visual fatigue" when facing the application of "short distance and long viewing time" in the high-end command and dispatch center. .

The latter is a shortcoming that many customers find difficult to accept. The micro-HD technology can well eliminate the "visual experience disadvantages" of these traditional LED full-color screens. "Higher stability and reliability", "better look and feel and comfort" This is the micro-HD can become the next generation The "realistic" support point of product standards.

But that's not all the advantages of microtechnology. Since the birth of high-definition led full-color screens, they have been continuously compressing their dot pitch indicators. At present, domestic manufacturers have launched products with a pitch of 0.7 and 0.8 mm.

However, this product has not been mass-produced and applied on a large scale, and has encountered limits and ceilings in "marketization". The further technical development of high-definition LED must rely on the progress and innovation of basic technology, and the micro-technology full-color LED display is this new advanced technology. Of course, even if it is a very good technology, it is impossible for micro-HD to occupy the entire market as soon as it comes up. Starting from high-end and gradually popularizing, this process has also been the path that SMD HD LED large-screen products have traveled in the past 6 years. ".

It's just that now it's the turn of Micro HD products. Once again, the "market iteration" process of first occupying high-end and then popularizing is performed. .