11/12/2023 0 Comments Oled tv burn in![]() We exported the spectral power distribution (SPD) charts for all OLED TVs involved in this test, and we fully disassembled the LG A1 OLED, the LG G1 OLED, and the Sony A80J OLED. We know that LG Display makes the OLED panels for both LG Electronics and Sony OLED TVs, but what about the other components? We decided to build a database of the different TVs and look into the specific panels used to look for any patterns. To understand the difference between LG and Sony, we first wanted to determine how much these TVs have in common. We found there's no difference between LG and Sony TVs in this regard-they both couldn't keep up, and the temperature increased dramatically due to the lack of ABL. Although this procedure was only run on the Sony OLEDs with image retention, we also ran the recovery video on an LG OLED to see if their temperature increased due to the fast-changing pattern. This led to a fairly significant temperature increase on all TVs, so we had to reduce the display brightness to avoid causing permanent damage. In our attempts to clear up any image retention on these TVs, we encountered an issue very early on in that the TVs were running at full brightness, and ABL wouldn't kick in with such a rapidly changing pattern. This video quickly alternates between different colored images. We decided to run a pixel refresh video to stimulate the OLED pixels and hopefully clear any image retention. The first step here was to determine if this was permanent burn-in or just severe image retention, as we encountered during the two-week soft launch of our test in October 2022. The Sony A8H, A80K, A80J, A90J, and A90K all showed severe signs of image retention. Our LG OLED has an incredible picture that is so much better than our old LCD tv that taking precautions like this is well worth the extra trouble, in my opinion.LG C2 OLED - 50% slide showing no image retention after two monthsĪfter taking our two-month photos and measurements, we were surprised to see what looked like severe image retention on some of our WOLED displays. If not, be warned, and do what you need to do to prevent sunlight from hitting the screen. If your OLED tv is in a place where sunlight can't fall directly on the screen, then of course you have nothing to worry about here. (I find that I actually like the look of the cloth rather than the big black tv screen.) Note that the damage was the result of either heat or direct sunlight, and not from over-usage of static pixels (the tv was off when the sun-caused damage happened). ![]() ![]() We now keep the tv screen covered by a handsome piece of cloth (a nice batik we had) when not using it. To make an already too-long story short, LG replaced the panel under warranty. I ran the tv's pixel-refresher function, and that took away perhaps 75% of the mark. Until, that is, I turned the tv on one summer night to find a very dark mark covering the lower middle of the screen, exactly the tall curved-pyramidal shape and height and size of the gap between the curtain panels! You can imagine how I freaked out. Since we often don't sit out in the tv room until evening, this escaped my notice. And by 5 pm or 6 pm, the sun was low enough in the sky to pass through a gap between two curtain panels to hit the OLED screen directly. With the sun's movement through the seasons, by summertime 2018 sunlight was hitting the "tv room" windows straight-on. And, it turns out, this is what happened. Although there are thick curtains on the windows, even when the curtains are drawn, light can come in through gaps in the curtain panels. While we usually only watch tv at night, the tv is of course there all the time. We keep the tv in a room on the western side of our house that has big west-facing picture windows, and the tv screen faces west as well. I bought an LG B7A OLED tv around Thanksgiving 2017. HOWEVER, THERE IS ANOTHER KIND OF "BURN-IN" TO BE AWARE OF AS WELL: DAMAGE TO THE OLED SCREEN FROM DIRECT SUMMER SUNLIGHT. rn-in-test) that people who use their OLED tv's for "normal" viewing - i.e., a mix of stuff, and no hours-long static screens with logos in the same place - will not have any burn-in problems. ![]() As others here have said, it's been shown (e.g., by, here.
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