In the past two years, MiniLED and MicroLED have emerged and caused high market attention. Among them, MiniLED as the next-generation backlight technology, it is estimated that the overall value of MiniLED will reach 1 billion US dollars by 2023. At the same time, due to limited production capacity of OLED panels, it is expected that MiniLED is expected to be used first in well-known consumer electronic terminals such as Huawei, Oppo and VIVO in 2018.
It is understood that the application of MiniLED is mainly divided into two aspects. First, as the backlight of LCD, using MiniLED as the backlight, it can realize LCD panel with power saving, ultra-thin and high contrast (area dimming). Since 2017, major LCD manufacturers have been actively following up, and now there are related products on display; second, it is applied to large-size small-pitch display, compared with the traditional SMT process, the small-pitch display can be realized with MiniLED. Pitch, higher reliability, better quality display. At present, enterprises have developed related products. It is expected that LED display and large-size TV will be the mainstream application of MiniLED in the future.
It is understood that Zhou Ming Technology, a well-known LED display solution provider in China, has a continuous high focus on MiniLED and MicroLED display technology, and actively invests in technology research and development and product layout.
In the research and development of MiniLED products, Zhouming Technology has carried out research on differentiated technical solutions for product characteristics in different application fields. From the perspective of research and development of related products, Zhouming Technology has developed a second-generation product. The samples have been made in various samples, and they are all in sample testing or small-scale trial production. Although there is no large-scale shipment, it is very Customers can receive orders quickly.
In fact, not only Zhou Ming Technology, as the leader of the domestic LED display market, Liard has always attached great importance to original technology innovation, leading LED display technology and product changes. Not long ago, Liard at the "performance briefing and new products" conference, heavy release of Supersafe technology based on LED display and MiniLED display new products, won the attention of all walks of life.
According to Dr. Ma Li, a senior research and development engineer at Liard, "Compared with the existing LED display products in the market, Lied's new MiniLED display products have advantages in reliability, image quality and protection. So far, Our MiniLED products are in the low-volume verification phase, not yet priced and shipped, but we will take the opportunity to market."
Despite the active layout of display application giants such as Liard and Chau Ming Technology, many industry insiders will still question whether MiniLED can truly achieve floor production, because there are still many problems to be overcome in the current MiniLED application.
According to Dr. Mary, "The production and promotion of MiniLED's large-size display field today faces two major problems, namely cost and repair."
In terms of cost, the first is material cost. Because of the complexity of the process, the cost of a group of RGB MiniLED chips is much higher than that of conventional LEDs. For this reason, only the MiniLEDs can be applied to large-scale high-end displays with a dot pitch of less than 1.0mm. Cost-effective advantage; followed by process cost, the current MiniLED solid crystal process is still using the traditional solid crystal machine, compared with the traditional SMT process, its low efficiency and high process cost.
In terms of rework, although the MiniLED display has higher reliability, the rework process still needs to be considered. The MiniLED display adopts an integral sealing process. When a defective point occurs, the LED chip must be removed after the sealing material is removed, and then sealed, and it is necessary to ensure that no significant difference is observed after the repair.
However, from the perspective of product development, any new technology from birth to highly mature applications requires a certain technology development cycle and client inspection cycle. In the meantime, if upstream chip manufacturers do not have the financial support for bulk orders, their cost reduction will be slower, which will lead to bottlenecks in the overall explosive growth of the product.
In view of the difficulty in landing the application of MiniLED, Chau Ming Technology has formulated countermeasures from four aspects: First, actively carry out the industrial layout, do a good job in the layout of related products and technologies; second, strive to do a good job. The linkage of the downstream industrial chain fully promotes the technical exchange and joint development of upstream and downstream enterprises, and quickly realizes the improvement of technology; third, fully analyzes and explores market demand, promotes products to larger market applications, and broadens product sales. Channel; Fourth, improve the display effect in various ways to adapt to different application scenarios.
But it must be mentioned that MiniLED has always been regarded as a transition product of MicroLED by the industry, and MicroLED is the next generation display technology. According to relevant data, it is expected that the MicroLED market is expected to grow to $4.5 billion by 2025.
According to the data, MicroLED refers to a high-density integrated LED array consisting of micro-LED pixels. The microLED pixel pitch in the array is usually below 200 microns, and the MicroLED chip is connected to the TFT/Si-CMOS driver substrate through a huge transfer and micro-package technology to realize the active-addressed MicroLED display.
Compared with LCD display technology using LED backlight, MicroLED is a self-luminous pixel array with high brightness, energy saving, larger viewing angle, higher contrast, faster response and better picture quality. In addition, compared with OLED display technology, MicroLED has won all kinds of indicators in terms of light efficiency, stability, longevity and clarity, and is expected to become the next-generation display technology that continues to improve display quality after OLED.
According to Gaogong LED observation, many internationally renowned manufacturers including Apple, Sony, Samsung, etc. have layouts, among which Apple is expected to use MicroLED products on the next generation of AppleWATCH products; Samsung will also launch MicroLED TVs this year; LG is one The tone submitted three new trademark applications to the European Union, all related to the Micro LED panel. At the same time, domestic downstream display companies are also actively deploying, such as Liard, Chau Ming Technology, BOE and so on.
It can attract the active layout of major manufacturers at home and abroad, so how long does it take for Micro LED to really reach the ground?
In Mali's view, "MicroLED's process is different from traditional LEDs. Because it is too small, it is impossible to spot and divide bins at this stage. This requires highly uniform epitaxial growth technology, and the full colorization of MicroLED requires a huge amount of transfer process. Or color conversion technology, it is expected that it will take 3-5 years for related technologies and markets to mature."
Recently, the relevant person in charge of BOE also appeared on the interactive platform. “The current technology of Micro LED is not yet mature, and it will take some time to develop. However, BOE has carried out technical research on Micro LED and made some progress.â€
For Micro LED technology, Chau Ming Technology has also made the following three levels of layout: At the strategic level, Chau Ming Technology will actively invest in it according to its own strategic direction, and strive to achieve breakthrough; at the layout level, Chau Ming will be in two directions. The layout of the MicroLED is first. First, in terms of large-size display, high-contrast display is realized by using its small size. Secondly, in terms of small-size display, research on its application in wearable products, VR, etc.; in addition to its own internal active research, Zhou Ming also actively cooperates with well-known universities and research institutes for joint development.
As we all know, Micro LED has a wide range of applications, both in large size and small size. However, the current MicroLED technology is still in the primary stage. The supply chain of MicroLED display is complex and lengthy. Each process is crucial, and effective management of each aspect will be challenging.
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