LG's 2021 QNED Mini LED TVs, for example, use up to 30,000 Mini LEDs in almost 2,500 local dimming "blocks" (on its 8K 86-inch flagship) as the backlight. The brightness of the LEDs depends on the colour and what is required from the on-screen action. When on, that area of the screen will be brighter. When a zone is off or barely lit, the area on the screen will seem darker or even completely black. The TV, therefore, switches them on and off in those local dimming zones, which run at a similar refresh rate to the LCD substrate. They are generally grouped in zones for responsiveness, to sync the backlight to the main image perfectly. How does Mini LED display technology work?Īs we explain above, the Mini LED backlight sits behind the LCD substrate in a panel (and any other substrates included to enhance colours or picture quality) and houses thousands of tiny LEDs that are switched on or off depending on the image. And, one extra benefit is that brightness can be greater. Mini LED panels are closer to OLED in black levels. And black levels have a direct impact on accurate colour representation in standard and HDR images. It is much harder to gain deep, involving black levels with each type of lighting - often resulting in a grey tone in darker areas. Usually, LED TVs adopt either larger LEDs behind the LCD substrate (and therefore are more prone to light bleed and less precise) or are edge-lit - where the LEDs are housed around the edge of the screen and shine across the panel. when light encroaches on adjacent pixels) and local dimming zones can be smaller and more accurate.
The difference between Mini LED and other direct backlighting technologies is that, because each LED is much smaller, the lighting bleeds less (ie. They combine with local dimming zones to provide more precise lighting in bright areas and better black levels in darker regions of a picture. It utilises tens of thousands of miniature LED bulbs that sit behind the LCD substrate in a display. However, unlike that technology, "Mini LED" relates to the backlighting rather than a display's pixels. Like MicroLED, the term "Mini LED" or "Mini-LED" has popped up a lot in recent times. Is it different to the MicroLED TV tech also used by Samsung? But what is Mini LED and what benefits could it bring to your next tech purchase? TV manufacturers are embracing the tech, too, with models launching from LG, Samsung, Sony and more. (Pocket-lint) - In 2021, Apple introduced Mini-LED displays to its iPad Pro and 14 and 16-inch MacBook Pro.
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