upcoming 12.9-inch iPad Pro will be slightly thicker due to its mini-LED display — Apple World Today

Mini-LEDs sport a local dimming function with a contrast effect similar to that of OLED displays. However, on some product lines, costs for mini-LED backlit displays may even be lower than their OLED counterparts, according to LEDinside. Mini-LED products are as thin as those using OLED technology so they consume less power than traditional LED screens, and they cost 70-80% less to produce than OLED displays, although their performance is similar.