The hottest trend of microled suddenly attacked th

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Micro led storm hit the TV display market and became the first year of 8K TV display in 18 years. As mentioned above, both OLED and qled are still in the "cradle" of development in the field of TV display. However, in recent years, with the "wheel acceleration" of the iteration of display technology, more and more new technologies are emerging, which has a great momentum to strangle OLED and qled in the cradle, of which microled is an important leading role. Following the exhibition of 8kx2k resolution large-size (970cmx270cm) microled display by Sony in Japan in 2017, many manufacturers also began to promote the application of microled display technology in the TV field at CES in 2018. For example, Samsung Electronics exhibited 146 inch super large-size microled TVs this year, and lumens also exhibited 130 inch and 139 inch super large-size microled displays. The trend of microled came quietly

however, according to jiangruifeng, product manager of csot TV display division, microled does not pose a major threat to OLED and qled in the field of TV large screen display at present, He believes: "Compared with the above two, microled has more difficulties in landing in the field of TV large screen display. At present, the exhibitors on ces are also in the promotion stage, and there are actually no truly commercialized products. As for microled itself, the biggest problem at present is high cost, low yield, and difficult mass production. Specifically, for example, in the massive transfer, the process from sapphire substrate to glass substrate is very difficult In particular, the massive transfer of such micro devices, as well as the mechanism of pH (pick up head), the size of pH, the contact impact in the case of massive transfer, the time required, and the place and bonding after transfer are also difficulties. "

moreover, in practical applications, current control and power consumption are also very big problems, Jiang Ruifeng explained: "The main reason is that if the current LED is used on the display, it will appear quite bright. For example, if an LED with a driving current of 1uA and a forward voltage of 3V is used on a full HD TV as a hypothesis, the viewer is watching the TV facing an 18W LED bulb. It is obviously a problem that it is too bright, but this is also the advantage of self luminous display, because compared with the light penetration efficiency of LCD display, micro LED display is much higher. At present, LCD The backlight utilization rate of the display is about 5 ~ 7%. But from another point of view, if the current of LED is reduced, the brightness will decrease, and the current density will be too low, resulting in poor uniformity. Another big problem in current control is that when the LED is miniaturized, the leakage current of light-emitting elements will increase. Many enterprises such as Wenge, Xieli, Longxing, Shengao, etc. use waterborne polyurethane in post-treatment, especially in the case of edge leakage. How to use filter to solve the problem of too bright brightness, in addition to other ways in the structure, we must also participate in the driver IC part. Finally, there is the compatibility between micro LED display and the existing LCD and industrial chain. The development of micro LED display has a very important role, that is, it can reuse the capital expenditure of TFT LCD panel factory, which has a large amount of investment in the past. That is to say, when making micro LED display, we must also think about how to be compatible with the current TFT LCD industry, so we should consider this issue in the initial design. Micro LED display is not to replace the LCD industry, but to replace L, which is also the LCD layer in the CD industry that needs to be vigorously carried out in the foam granulator industry. Therefore, TFT and CF machines should be reusable, and the driving mode, especially the active driving mode, must also be considered. In addition, in the technical part of optical packaging, it may be feasible to use CF machine to change the machine. If considering that TFT machine and CF machine can be reused, it means that about 70% of the original investment of LCD industry can be reused. If coupled with the research and development of detection methods and repair technology, micro LED display still has considerable challenges in the integrated supply chain. "

however, for users, Li Jun, the marketing director of Deyuan Innovation Technology Co., Ltd., believes that it doesn't matter what kind of high-rise display technology TV manufacturers use. What users really care about is how to achieve the same level of performance upgrading of TV image quality and screen. Therefore, with the large-scale popularity of 4K display, 8K has become the next generation of technology upgrading direction favored by consumers and pursued by TV manufacturers. To this end, major TV mainstream manufacturers are vigorously promoting the application of 8K large screen display technology in the TV field. For example, on August 31, 2017, sharp released the world's first consumer grade 8K TV sharp open view aquos, priced at 68888 yuan; On September 7, 2017, BOE also showed a full range of 8K panel products, including 27 inch, 65 inch, 75 inch, 98 inch and 110 inch 8K TV panels; LG also expressed its interest in 8K technology in the third quarter meeting. In addition, Samsung, Changhong, TCL and other manufacturers are also trying to promote the commercialization of 8K display technology, which shows the confidence of TV manufacturers and panel manufacturers in 8K

aiming at the development of 8K display technology of TV in 2018, Jiang Ruifeng predicted: "In 2018, the TV display field will still focus on 'image quality and appearance', among which 4K will be fully popularized in the medium and large-scale market. The medium-sized TV display screen of 43-50 will become the main penetration direction of 4K, and the penetration rate is expected to exceed 44.5%. Under this trend, 8K will become the next battlefield for panel manufacturers. However, subject to the human eye recognition ability, 8K products will mainly focus on those of 65 and above." The large-scale TV display market is expected to accelerate its penetration after 2019, and the penetration rate of 8K is expected to reach 3.5% in 2022. "

Li Jun believes that 2018 will be the first year for 8K to develop in the TV large screen display market, He explained: "First of all, since the SOC solution for 8K display will gradually realize mass production and supply in 2018, the TV machine can realize 8K in the true sense to avoid impact and dust entry; secondly, driven by the formal production of BOE and LG g10.5 production lines, more and more generation 10.5 production lines will usher in mass production after 2018, providing basic capacity guarantee for large-size panels of 65 and above. With the increase of large-size, It will also drive the shipment growth of 8K products; Moreover, the technology and market transformation needs of the whole machine manufacturers. At present, other competitors are actively planning and layout 8K. For example, sharp brand has released 8K products last year. Third, without the use of harmful solvents, Star Electronics will actively promote 8K technology this year, and domestic TCL, Changhong and other manufacturers are also following suit. Therefore, if manufacturers in the industry do not do 8K, they will appear to be unable to keep up with the trend; Finally, mobile operators in Chinese Mainland and other regions are also actively planning 5g commercial networks, which will more effectively support the transmission and operation of 8K content. In general, 2018 will be a key year to promote the implementation of 8K technology and product popularization, and it is expected to have a very good performance in the TV market. "

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