Yes, they do. They also take the crown for burn-in and lost detail in blacks (OLED diodes on LG OLEDs turn off at 20cd/me, losing all detail that appears in that range).
My original mention of QLED was in reference to how OLED would never reach an acceptable state before it was beaten, and I thought that's what we were discussing. As far as picture quality now, there are four TVs from Sony alone that top out the Q9F, so it's not impressing anyone right now.
I would argue that something with a burn-in rate like OLED isn't consumer ready.
But you're making a bigger deal out of burn-in than it is.
From the link I shared:
"We include this section begrudgingly, both because burn-in is a misnomer (that’s just an aggravation) and, for most folks, the effect will not be an issue.
The effect we’ve come to know as burn-in stems from the days of the boxy CRT TV, when prolonged display of a static image would cause that image to appear to “burn” into the screen. What was actually taking place then was the phosphors that coated the back of the TV screen would glow for extended periods of time without any rest, causing the phosphors to wear out and create the appearance of a burned-in image. We think this should be called “burn out.” But … whatever.
The same issue is at play with OLED TVs because the compounds that light up do degrade over time. If you burn a pixel long and hard enough, you will cause it to dim prematurely and ahead of the rest of the pixels, creating a dark impression. However, in reality, this is not very likely to cause a problem for anyone — you’d have to abuse the TV intentionally in order to achieve this result. Even the “bug” (logo graphic) that certain channels use disappears often enough or is made clear so as to avoid causing burn-in issues. You’d have to watch ESPN all day every day (for many days) at the brightest possible setting to cause a problem, and even then it still isn’t very likely.
That said, the potential is there, and it should be noted. Since QLED TVs aren’t susceptible to burn-in, they win this fight by technicality"Last edited by Hynad - on 26 November 2017