https://wccftech.com/apple-facing-m1-ipad-pro-mini-led-production-issues/

Apple might have one of the strongest commands on its supply chain, but according to the latest reports, its partners are still struggling to mass produce mini-LED panels for the M1 iPad Pro. To be honest, this is not surprising to hear, because an earlier report in April mentioned the same thing.

Citing sources familiar with the matter, Bloomberg reports that the larger 12.9-inch M1 iPad Pro is facing manufacturing issues, primarily due to its mini-LED. Unlike traditional LCD screens, the Liquid Retina XDR panel joins 10,000 mini-LEDs into 2,500 dimming zones, giving the iPad Pro higher brightness levels and an improved contrast ratio.