Image:-mini-led screen rumor (ipad pro)
Apple's LCD panels use LEDs, or light-emitting diodes inside, to light up the display for backlighting purposes. As the name suggests, mini-LEDs are smaller diodes, less than 0.2 mm.
An iPad-like device features an LCD panel with backlighting LEDs, with the panel used to control where light appears on the screen. Depending on what's on the display of the ubiquitous iPad, for dark scenes the LEDs are fully illuminated or dimmed down.
A panel light with mini-LEDs uses many more LEDs compared to a traditional LCD which means that there are more total dimming zones to work with. A traditional display could use hundreds of LEDs, but more than a thousand could have a mini-LED display. In fact, Apple is said to be exploring mini-LED displays which use 10,000 LEDs, each less than 200 microns.
Because there are more LEDs and more dimming zones, mini-LED displays can offer deeper, darker blacks, brighter brights, richer colors and better contrast as there is more control over what's displayed on the screen with so many LEDs.
Apple analyst Ming-Chi Kuo has also said that the transition from Apple to mini-LED will allow for thinner and lighter product designs offering much of the same benefits as OLED. Mini-LEDs are close to the deep blacks and OLED provides better HDR, but without the problems of burn-in or degradation.
LED-backlit LCDs are significantly more power-efficient than previously used cold cathode fluorescent lighting for LCD panels, and mini-LED LCDs will have additional power efficiency gains.
How long it will take for Mini-LED Technology?
The first mini-LED products were expected by the end of 2020 but Apple 's plans are up in the air with the global health crisis. Kuo recently said that we could not see any mini-LED devices until 2021, with mass production to kick off in the third quarter of 2020 and final assembly to be in the first quarter of 2021.
There have been other DigiTimes rumors that still suggest a 2020 release for some mini-LED products, so we'll just have to wait and see how the rumors will pan out in the months to come. Right now we are looking at the first mini-LED devices either in late 2020 or early 2021.
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