Some LCD panels can develop image retention however, which while not being the same as burn-in is a similar effect. The revisions of the IPS panels used in 27”

Some LCD panels can develop image retention however, which while not being the same as burn-in is a similar effect. The revisions of the IPS panels used in 27” iMacs from 2009 through 2016 or 2017 for example had a tendency to start exhibiting retention after a few years, I think probably due to the extra heat coming from the computer components behind the panel. I’ve read some reports of VA panels developing retention too.