Fun fact: OLEDs have radically shorter lifespans "in the field" than LED or LCD.

According to a paper from Samsung at IEEE IRPS three years ago, the best OLED screens only have about 2 years (600 hours) best case continuous use but that is extended by "screen savers" and estimates of only 25%-50% customer use in a 24 hour period to about 5 years (extend by not using)

https://ieeexplore.ieee.org/document/8720529

Part of the reason for this: low energy manufacturing materials/processes, by definition (physics), will have low energy failure mechanisms (which always means they will fail more quickly). This is about chemico-physical reaction activation energy. Anything ink-jet created or organic is a low energy process/material.