Small-pitch LED display technology Innovation

     What is the hottest technology in the display industry today? There may be no "questions" about this issue: Apple, Sony, Samsung, Konka, BOE, TCL, etc. have all entered this technology! This is based on Mini-LED and Micro-LED It is a new generation of small-pitch LED display technology! Especially in recent years, under the support of the Mini-LED concept, the small-pitch LED display technology has broken through the P 1.0 pitch and even achieved the "PPI resolution" comparable to large-screen LCD liquid crystal displays. It can be called a milestone. Because this indicator not only represents new advancements in technology, it also means that small-pitch LEDs have gained new weapons in the expansion of application scenarios. Represented by Mini-LED and Micro-LED, the small-pitch LED display will initially fully explore the potential of "full development" application scenarios in many fields such as professional display, commercial display, home display, and consumer electronics. The market scale will advance from tens of billions to hundreds of billions. In the face of Mini-LED technology, "we can be proud of ourselves"! However, the quality of Mini-LED technology also brings new problems: "Everyone wants to put on this label"!

At present, there are many different certification standards for Mini-LEDs in the industry, two of which are mainstream: one is that all pixels with a pixel pitch below 1.0mm can be recognized as Mini-LEDs, mainly to distinguish them from traditional small-pitch LEDs. The concept of the screen; and another standard believes that products that must meet the LED chip size in the range of 50-100μm and adopt a series of high-level packaging and integration technologies can be called "true" Mini-LEDs.

Of course, smaller pixel pitch also means higher process difficulty, and smaller display chips also bring about a huge transfer, which is a process problem that lies in the way of technology popularization. The LED display breaks through the P 1.0 pitch, which is a huge improvement. However, this does not mean that this concept defined by pixel pitch can clearly express the meaning of "mini". For example, the forward-looking layout of Mini-LEDs has attracted the general attention of display device manufacturers in many fields, including LCD liquid crystal products that demand upgrades in display effects. Mini-LED is used in the field of LCD backlight display and has become a "high-end must-have product" label in the field of LCD display. However, it is obvious that the LCD backlight cannot be defined by the LED crystal pitch to "whether it is Mini-LED". As far as the LED display is concerned, the mass production of Micro-LED is difficult and costly for almost all manufacturers. Because of this, Mini-LED with relatively reduced process difficulty is generally considered by the industry to be the core technology that will dominate the development of the industry in the next few years. However, the Mini-LED technology is not "it can be turned into a cabbage". This has led to the continuous emergence of "compromised" "Mini-LED" products.

     There are a large number of products using Mini-LED labels on the market, mainly including solutions such as traditional surface-mount packaging, N-in-one packaging, and COB packaging with formal chips. These technologies can to some extent circumvent the difficulties of the mass transfer process and achieve faster commercialization. These technologies cannot be said to be "smart" inventions. However, a variety of clever technical implementations also disrupted the meaning of Mini-LED. On the other hand, the coexistence of multiple standards is not conducive to the unified management of the market and the healthy development of the industry. Therefore, unifying the industry certification standards of Mini-LEDs has become the primary issue that needs to be solved urgently. This involves scientific discussions and progress in many aspects such as crystal size, integration process, screen formation, or application of technology.