i discussed this with an LG engineer when we had some of their Oled Dual displays and a 86" stretch brought in for a trade show-


i am paraphrasing here and while i was trying to pay attention he was moving pretty fast and it was a trade show floor, but here is my understanding-

Oled cells can kinda of "hold on" to the electrons that are use to excite them to produce light.The more electron retained the less the "new" electrons can excite. the "cleaning"process is essentially the TV trying to strip these retained electrons from the OLED cells.

it takes approximatly 3 times longer to remove then it does to retain.


Commercial displays do not have the "cleaning" process because you quickly will run out of time to strip(i.e. TV on longer then 8 hours a day)


this was my understanding anyway , I could be certainly be wrong or misinterpreted what he was saying.