Rtings.com are currently running a burn-in test on MLA WOLED/QD-OLED screens (in which they basically run CNN non-stop since last November) and LG's 2022 G2 and C2 OLED TVs are currently completely free of any permanent image retention, whereas Samsung QD-OLED screens (used in the Samsung S95B and Sony A95K) are both showing signs of image burn-in.
This test led to LG having a press call this week to crow about it.
During an invite-only online media event organized by LG, the company was focused on a single message: Samsung’s OLED TVs have a burn-in problem and we all need to know about it.
Rather than using its own in-house testing, LG instead has used a set of long-term test results from rtings.com, a review site known for its in-depth, measurements-based product evaluations.
The test in question was performed on Samsung’s first QD-OLED TV, the 65-inch 2022 S95B, a TV that uses quantum dots combined with blue OLED pixels to achieve its full-spectrum RGB color. Rtings.com found that if left the same image displayed on the S95B for days at a time, with brightness set to maximum, permanent image retention occurred. The same test also apparently was performed on Sony’s 2022 A95K — the only other model that uses Samsung’s first-gen QD-OLED panel — with similar, yet slightly less-pronounced results.
LG Display was also quick to point out that LG’s 2022 G2 and C2 evo OLED models, which were also subjected to the same punishment, appeared to come away unscathed, or at least with no perceptible damage in the photos that were shown to attendees.
LG Display explained that the reason its panels fared better is thanks to its use of white subpixels. The deeper meaning of this explanation was lost on no one. Samsung has made LG’s white subpixel a prime target in its promotion of QD-OLED panels, claiming that the white subpixel reduces color accuracy by washing out the adjacent subpixels.
For its part, LG is now striking back by saying that without the brightness boost afforded by those white subpixels, Samsung is pushing its own OLED pixels too hard and that burn-in is the consequence of doing so.