Screen Burn-In Test

Screen burn-in is a permanent discoloration of a display caused by displaying a static image or UI element for an extended period. It occurs in organic light-emitting displays — OLED, AMOLED, and plasma — where the organic compounds in each pixel degrade at different rates depending on usage. Pixels that display bright static content (a bright logo, a taskbar, a game HUD) degrade faster than surrounding pixels, causing the image of that element to become permanently visible as a ghost even when displaying other content. LCD displays do not experience true burn-in but can suffer temporary image retention.

Image retention (also called ghosting or temporary burn-in) is a temporary effect where a recently displayed image remains faintly visible when the screen content changes. On LCD monitors, this is caused by a slow response of the liquid crystal cells and is typically temporary — it disappears after displaying moving content or after the screen is off for a period. On OLED panels, mild image retention is also common and usually resolves on its own. The distinction from permanent burn-in is that image retention fades over time, while burn-in is a physical degradation of the organic pixels that is irreversible.

Burn-in is most visible when displaying a uniform solid color, particularly medium gray. This is because burn-in appears as slight variations in brightness or color — areas of the screen that have been displaying bright static elements will appear slightly different from surrounding areas. The gray 50% test is the most effective for revealing burn-in because it provides maximum contrast for subtle luminance differences. Other colors help confirm whether the issue is in a specific channel (red, green, or blue sub-pixels). If you see ghost outlines of a taskbar, dock, or application window on the gray test, burn-in is present.

To prevent OLED burn-in: Use screensavers or sleep mode when leaving the display idle. Set auto-off to 5-10 minutes of inactivity. Keep brightness at 80% or below for long sessions. Enable pixel shift or logo luminance reduction in your monitor's OSD if available. Avoid displaying static high-contrast content (bright logos, game overlays) for extended periods. Run the pixel refresh cycle regularly if your monitor supports it (usually automatic). Vary your desktop background and avoid static wallpapers. Modern OLED monitors include built-in protection mechanisms, but these practices still extend panel life significantly.

Pixel refresh (also called panel care, pixel cleaning, or screen refresh) is an automatic calibration process built into OLED monitors that counteracts uneven aging. The process runs when the monitor turns off after a defined number of hours of use (typically every 500-2000 hours). It applies a correction pattern across the panel to equalize brightness variations between pixels. The process usually takes 5-10 minutes and runs automatically while the monitor is off. You may see the screen briefly flicker during the process. ASUS, LG, and Samsung all include versions of this feature in their OLED monitors.

True OLED burn-in is permanent and cannot be repaired through software. The organic compounds have physically degraded. Some pixel refresh utilities can partially mask mild burn-in by equalizing the surrounding pixels to match the degraded area, but this reduces overall brightness. Professional panel replacement is the only way to fully resolve severe burn-in. For temporary image retention (not permanent burn-in), running the screen refresh utility, displaying white content for an extended period, or simply cycling through various content usually resolves the issue within hours.

No. LCD monitors cannot experience true burn-in because they use a liquid crystal layer in front of a static backlight — there are no organic compounds to degrade. However, LCD panels can experience temporary image retention, particularly VA panels, which can be slower to release a static image from their liquid crystals. LCD displays can also experience a related phenomenon where the backlight LEDs directly behind frequently-used bright areas degrade slightly faster, causing very subtle, nearly invisible brightness differences — but this typically takes years of continuous use to become noticeable.