Here's an interesting OLED vs LCD VA vs LCD IPS
one year image retention test by rtings.com.
They tested 3 TVs side-by-side, the OLED LG B6, the VA Samsung KU6300 and the IPS LG UJ6300 in a year-long test.
The following is quoted from the test:
"It has now been one year since we started the 20/7 burn-in test and the TVs have each been on for more than 7000 hours. The goal of this test was to see whether burn-in could happen for the three most popular TV types (VA LCD, IPS LCD and OLED).
Some results so far:
Long periods of static content will cause burn-in on OLED TVs. The red sub-pixel appears to degrade the fastest, followed by green and then blue. The effect appears to be cumulative, as even cycled logos do burn-in (but over a longer period of time). We are investigating this more in our Real Life OLED Burn-in Test
We haven't experienced any signs of burn-in on the two LCD TVs (IPS and VA type panels).
The 'Pixel Shift' option on the OLED LG B6 can help to spread static content over more pixels (so each pixel is displaying the same content for less time) but for our large logo is not effective. It may be useful for very small static areas
Black letterbox bars have been displayed for over 2,500 hours. This has not caused noticeable uniformity issues yet.
The brightness of the UJ6300 appears to have started trending downwards. We will continue to monitor this trend over the coming months. The other two TVs have maintained approximately the same brightness.
The color gamut of these TVs hasn't changed appreciatively"
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