- May 5, 2006
https://www.cnet.com/news/oled-screen-burn-in-what-you-need-to-know/ (2018)Is this monitor recommended for gaming ?
Burn in image .... that's why I ask.
"What's colloquially called "burn-in" is actually, with OLED, uneven aging. They don't "burn in" as much as they "burn down." ... OLED pixels very, very slowly get dimmer as they're used. In most cases this isn't an issue since you're watching varied content and all the pixels, on average, get used the same amount."
Always a chance with OLED but realistically probably not much danger on this monitor since it has a 400 nit SDR brightness limit unless you keep static UI elements on the screen all the time and don't vary the content. They also can use pixel shifting and an idle screensaver built into the screen I think. They (the LG C9 tvs at least) also run a maintenance program when turned "off" while in standby mode which attempts to intelligently even the wear of the oleds that had miles put on them that day.
Personally I would use an oled screen with black wallpaper and no icons as a "media stage" for games, movies and streams, picture slideshows etc. and use a different monitor for desktop/apps and taskbar.
The brighter the screens the hotter the oleds and the more risk of burn in so brighter HDR OLED tvs use ABL (auto brightness limiter) tech which kicks in when higher brightness content is detected in HDR scenes and snaps the screen down to 500 or 600nit from ~ 700 nit to 800nit overall spikes on bright color gradations in HDR content/highlights. The alienware gaming OLED uses 400 nit maximum brightness.
LG OLED also use an all white oled layer with a color filter above it. This avoids uneven color wear (but not uneven screen location wear). They use a WRGB array with one clear spot on the color filter that allows the white straight through. On brighter HDR capable screens, this means the color accuracy is off and a little "white washed" at the higher color brightness HDR highlights.
Brightness tests are usually measured using bright squares in large grids and they call it a % window. So if there is a 780nit 10% window it means only 10% of the screen has 780nit brightness. A 530nit 50% window means 50% of the screen was bright and obviously 100% window is the whole screen. However it's also measured in peak and sustained brightnesses because a screen can peak or burst at a higher brightness but it can only sustain a lower brightness. This comes into play a lot on HDR screens since HDR content is based on HDR 1000 nit (or HDR 4000, or HDR 10,0000 on future capable hardware). Anything under HDR 1000 has to use a hybrid gamma and use more questionable tone mapping to try to make up for the new more limited sub 1000nit based scale.
The expensive panasonic GZ/GZ oled tvs use a metal sheet behind the oled array which acts like a heat sink. This allows the screen to hit 1000nit peaks on smaller %'s of the screen for highlights and it reportedly makes IR (image retention) happen less when at all and more briefly when it does. Reviewers are guessing it would also reduce the chance of burn in too but that would take a long time to test and would still probably be an unreliable test scenario anyway. Hopefully in the following years more OLEDs will use cooling technologies like this.