The hottest key technology has not broken through

2022-08-23
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Key technologies have not broken through. How far is mini led ahead of micro LED application

microled technology has become a new hot spot in the field of display technology in recent years. Driven by top manufacturers such as apple, Sony and Samsung, the industry has even shouted that microled will challenge "LCD" and "OLED" in the future and become the mainstream voice in the market. Although in terms of the current development progress of this technology, this statement is more like madness, but in the era of changing trends and fleeting opportunities, no one dares to miss any choice

I believe you have also noticed that in the past two years, micro led, which is regarded as the mainstream of the new generation of panel technology, has not only attracted international manufacturers such as apple, Sony, Facebook, LG display and so on, but also manufacturers in Taiwan, China, China, such as Jingyuan Optoelectronics, Yichuang optoelectronics, Hon Hai, qunchuang optoelectronics and so on

of course, facing the new market of microled, manufacturers in Chinese Mainland are also actively choosing the gear to be tested (150kn or 300KN). As for upstream chip manufacturers, mainland chip giants such as San'an optoelectronics, Huacan optoelectronics and Qianzhao optoelectronics are all in full swing

according to people in the LED industry, microled has obvious advantages over OLED because it has a wider color gamut, higher brightness, lower power consumption, longer service life, stronger durability and better environmental stability. Considering the characteristics of microled, wearable devices and indoor displays will be the first fields to enter in the future. If microled display is used in these two fields in the future, nearly 50% of the global LED chip production capacity will be consumed

indeed, with the gradual fermentation of the microled market, the expansion of LED chip production has also returned to the normal track. In the first quarter of 2018, the overall supply and demand of the LED chip industry is relatively balanced. It is expected that the supply and demand of the chip industry in 2018 will increase significantly compared with the "less waste" of 3D printing plastic materials assisted by 3D recycling machines in 2017

San'an optoelectronics, a leading domestic LED chip enterprise, believes that microled is the key development direction in the future, and revealed that it has long-term technical reserves in both microled and mini led fields. On February 5, 2018, San'an optoelectronics signed an advance payment agreement with Samsung Electronics

as a well-known LED chip manufacturer in China, Qianzhao optoelectronics is also actively developing towards miniled/microled. It is understood that for the new application of LED in display, Qianzhao optoelectronics has newly established the "future display Research Institute" and cooperated with downstream partners to develop new products of mini led and micro led

it is worth noting that for micro LEDs, dry lighting optoelectronics are more chip side and transfer side. According to Huo Dongming, the marketing director of Qianzhao optoelectronics, "Qianzhao optoelectronics has done a good job of technical reserves at the chip end, but it is more to discuss with the downstream of the industrial chain and the manufacturers of the display screen (including those who do the transfer), because it is a common problem that the industrial chain needs to face, especially to solve the problem of massive transfer."

referring to the massive transfer, we have to say that this is a major "pain point" that microled is trying to overcome in the process. As we all know, the chip transfer yield of micro led needs to reach more than 99.9% to meet the mass production and shipping standards. The relevant person in charge of evatec, a Swiss semiconductor equipment manufacturer, also stressed that for the micro led process, the semiconductor equipment level needs to be high enough to achieve zero defects. For micro LED technology, brightness is not the most important requirement. The main goal is to achieve zero defects and improve production yield

the chairman of Optoelectronics also pointed out that "the bottleneck of micro led mass production mainly lies in precision mechanical equipment, not led. Although some manufacturers have made micro LED applications, the cost is absolutely high now, and it is expected that the equipment will gradually mature within five years."

to sum up, how to improve the chip transfer yield has become the biggest challenge in the development of micro led

based on this problem, industry insiders basically hold a relatively consistent view on the commercialization of microled, that is, the prospect is worth looking forward to, but the road to commercialization is still far away. Huo Dongming, marketing director of Qianzhao optoelectronics, said frankly, "the early exploration period of microled will be relatively long, but once the huge transfer is solved, the industrialization will also accelerate. Personally, I think it will take years for microled to be fully commercialized."

it is precisely because this dilemma is difficult to break through in the short term. Although Taiwan manufacturers have successively invested in the development of microled, there is still no mass production of related products. Therefore, when the transfer quantity, yield and grain size of micro led did not reach the commercial level, Taiwan LED factory decided to promote the so-called "micro like led" (that is, mini LED) first

not only Taiwan manufacturers, but also led chip manufacturers in the mainland, regard Mini LED as a transitional product of micro led. In other words, LED manufacturers hope to achieve a breakthrough in mini led and make full preparations for entering micro led

as the second largest LED chip manufacturer in the domestic market, Huacan optoelectronics has long studied microled. Wang Jiangbo, vice president of Huacan optoelectronics, said as early as July 2017 that Huacan optoelectronics has cooperated with famous manufacturers to develop micro led projects and achieved preliminary results

in 2018, Huacan optoelectronics increased its investment in microled. On February 22, Huacan optoelectronics signed the investment framework agreement on advanced semiconductors and devices project of Huacan Optoelectronics in Yiwu information optoelectronics high tech Industrial Park. Among them, the project includes microled

in fact, Huacan optoelectronics is also facing microled technical problems. According to the analysis of the relevant person in charge of Huacan optoelectronics, "the microled we define is an LED product that cannot be processed and processed by existing equipment, but miniled can be processed by using existing equipment. At present, Huacan optoelectronics has launched relatively mature chip products on mini blue light chips for backlight applications to mini RGB chips for display applications, with a shipment of about several hundred KK."

in a word, micro LED is coming into the public view and has become a focus of the industry. As for whether microled can lead to the next generation of display technology revolution, it depends not only on the technical indicators, but also on the market choice. In other words, the utilization prospect of micro vanadium in the battery field is generally optimistic. D, in addition to the promotion of major manufacturers, it also depends on the advantages of future products compared with existing display products in terms of cost and the application field of strain gauges pasted on the surface of elastic components. Otherwise, no matter how advanced the technology is, if the market doesn't pay for it, the outcome will only be broken

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