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Message: [QUOTE="Queen, post: 90540, member: 27"] [SIZE=17px][COLOR=rgb(15, 15, 15)]An accelerated test ran 100 televisions for 18,000 hours across three years, roughly twelve years of normal viewing, and the OLEDs outlasted the LCDs. Backlight failure turned out to be the bigger killer, with a third of LED models losing at least one LED, and close to 60 percent of edge-lit sets failing partly or completely.[/COLOR][/SIZE] That result surprises people who still treat burn-in as the reason not to buy OLED. It should not. The failure mode everyone fears is real, but it is slow, uneven, and increasingly boxed in by software that runs whether you asked for it or not. Desktop use is the harder case. Television content moves, while a monitor shows you the same taskbar, the same window borders, and the same editor chrome for eight hours a day. That is precisely the wear pattern OLED handles worst. [HEADING=2]Your taskbar is the part that wears first[/HEADING] Burn-in is not an image burned into glass. Each subpixel dims as it ages, and the ones lit brightest for longest dim fastest, so what you eventually see is uneven brightness rather than a ghost picture. That is why it shows up as a faint dark band where your taskbar sits, or a slightly gray rectangle where a chat window lived. You rarely notice it during normal work. You notice it on a flat gray or solid color background, which is why manufacturers test for it that way. Short-term image retention is a different thing, and people confuse the two constantly. A ghost that clears after ten minutes of mixed content was never damage, only a temporarily uneven charge state that settles on its own. Brightness is the lever you actually control. Running SDR content at full panel brightness all day drives more wear than any other single habit, and most people set that slider once during unboxing and never touch it again. Blue ages fastest of the three emitters, so tired areas tend to drift warm before they visibly darken. Panels fight this in the background, measuring cell behavior and quietly raising drive current on worn subpixels to hold output level. [HEADING=2]Fewer layers buys headroom rather than immunity[/HEADING] Stacking emitter layers spreads the workload. Two layers producing a given brightness each run at lower current density than one layer doing all of it, and lower current density means slower degradation, which is the whole longevity argument for tandem construction. [B][URL='https://goldmidi.com/community/threads/lg-display-reportedly-completed-a-two-stack-tandem-woled.75922/']LG's move from three emitter layers to two[/URL][/B] complicates that slightly, because fewer stacks means each remaining layer works harder for the same output. The offsets are a more efficient blue emitter and a drop in drive voltage of roughly four volts. Whether it nets out in favor of longevity is not something a spec sheet answers. It is the sort of thing that surfaces in year three, on somebody else's monitor, in a forum thread. [HEADING=2]Warranty terms say what manufacturers actually believe[/HEADING] Gigabyte covers the Aorus FO27Q28G with three years standard plus a fourth year dedicated to burn-in, on a current Tandem WOLED panel. MSI offers three years of burn-in cover, Dell Alienware and Corsair match that, and Asus and LG sit at two. Read the conditions before you rely on any of it. MSI voids burn-in cover if you delay, disable, or otherwise defeat its OLED Care functions, and it expects you to run Panel Protect after every four cumulative hours of use. It also defines the failure numerically, as luminance variance above 3.5 percent at 50 percent gray in its 1000-nit mode. That is a tighter threshold than most buyers assume, and it means a screen you consider ruined might still measure as healthy. The care features themselves are not cosmetic. Current implementations detect the taskbar, dim static logos, nudge the entire image by a pixel or two on a timer, and watch for the hard boundary edges that letterboxed video leaves behind. They also explain the shift in warranty confidence. Close to a billion OLED panels ship each year now, and reported burn-in has not scaled with that volume, which is the nearest thing to population-level evidence that [B]the risk of ruining a panel at your desk[/B] has fallen. [/QUOTE]

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