These "stumbling blocks" are not removed, Micro LED is difficult to measure production

As SONY showed the Micro LED prototype a few years ago, the CES exhibition also displayed the Micro LED TV of the update technology, and Apple also invested in the huge transfer industry of Micro LED, and said that the future Apple will import Micro LED on the display panel of the action device and let the industry be full of the technology of Micro LED. There is another feasible direction and option for the LED backlighting and the impact of the OLED panel industry on the growth of the LCD panel industry. Micro LED can be technically feasible if a display panel such as a LED display is made from dozens of inches to hundreds of inches, but it is far from commercialized mass production. It is a huge transfer technology that requires a higher speed, moving a small LED to a substrate, otherwise the existing technology is available. Good rate, to create a available display, too long time, can not be mass production. As the point spacing of LED is shrinking, the cost of traditional LED encapsulation is actually in the proportion of the overall LED display module. In fact, it is relatively high. The manufacturer can always shrink the size of the traditional LED chip, but with the encapsulation support and the wire, there are also the limitations of the cost and the technical non - law balance. In the future, if the Micro-LED is used to make a display screen, there is no need to encapsulate the scaffold and metal wire, but to reduce the cost of traditional SMD-LED packaging. Micro LED mass production must solve the problem of uniformity, Micro- LED products require high wave length uniformity, small spacing with LED product wavelength uniformity is more demanding. At present, the wavelength homogenization of blue light LED under the standard of mass production is required to be within + 5~12nm, but the wavelength uniformity of the small space screen is even lower to + 1-1.5 nm. If it is Micro LED, it will be more stringent. In other words, under the scale of mass production, high precision transfer process to improve the production process yield, at least 99.9% level, and even 99.999% of the better state. As a result, the industry needs to use the PCB board, also to be able to complete the requirements of customization, through the fine line width / line distance and small drilling development, by this ultra high density line, it is possible to carry huge amount of Micro-LED painting, for consumers and users, it can show high resolution, high quality display effect. In addition, the difficulty of applying Micro LED to smart wristwatches and smart watches, the development of the LED driven IC has the potential to complete, because the pixels to be controlled are less. If it is the Micro LED used in the LED display, the matching driver IC needs a high degree of customization, trying to integrate the driver and the line sweep circuit. In order to simplify the PCB backboard design, improve the photoelectric conversion efficiency and solve the problem that the high density of the LED is too much, which leads to the lack of IC space. At the same time, the drive circuit can be modular designed so that the cost of design and manufacturing can be further saved. Micro LED industry development in the future, there are many issues to be gradually completed by the industry, to make this puzzle together.