Birth and principle of MiniLED

The popularity of OLED screens has yet to be fully realized due to price and other factors. Our daily use of mobile phones, TVS, monitors and other display devices are still dominated by LCD screens. The fundamental reason an LCD screen can display a picture is the presence of a light source, and its light source is the backlight layer.

Because the backlight layer is a module made up of a lot of LED beads that emit white light. Therefore, the number of LED beads will have a critical impact on the maximum brightness and uniformity of the screen. When the number of beads in the traditional LED backlighting module cannot meet the requirements of picture quality and industry application, it will be replaced by the new backlighting technology, MiniLED backlighting technology emerged.

MiniLED. As can be seen from the name "Mini", the principle of this technology is to reduce the size of LED lamp beads, so that the panel can accommodate more lamp beads while keeping the area unchanged, so as to achieve high brightness display effect. With the progress of backlighting technology, the standard grain size of MiniLED was gradually reduced from 100µm to 200µm to 50µm to 200µm, making the screen brightness realize a leap-forward development from hundreds of nits to thousands of nits.

The increase in the number of beads has also given rise to Local dimming, a technique in which the entire backlight is split into more individually controlled areas. The LED chip controls the intensity of light beads in a single area to achieve higher contrast. Moreover, Local dimming technology can also effectively improve the light leakage problem of LCD screen since most MiniLED backlit panels are designed with straight down backlighting.

Application of MiniLED in all industries

In terms of application scenarios of MiniLED, it is mainly divided into direct display and backlight modes.

The direct display adopts RGB three-color LED module to make MiniLED beads as pixels directly like OLED, so as to complete the picture display. However, this method is still limited by the immature technology and high cost of small-size screen, so it is only applied in the field of commercial and professional display, and it still needs some time before it can be popularized for civil use.

Source: Huicong LED screen network