This is why the screen never really looks black ... especially if you have a recent vintage 12.9-inch iPad Pro with its amazing mini-LED display. "Despite not being OLED or micro LED-backlit ...
What this means for the iPad Pro We can see the benefits of Mini-LED backlighting by comparing ... while viewing HDR content and 1,000 max full-screen brightness as well as 600 nits max ...
And now we know that the iPad Pro 2021 will use Mini-LEDs ... On the other hand, Mini-LED screens are immune to the screen burn issues that OLED TVs are still (theoretically at least) prone ...
The iPhone X was the first iPhone to feature an OLED screen in 2017 ... Similarly, mini-LED screens are only found on the 12.9-inch iPad and the 14-inch and 16-inch MacBook Pro models.