What Does Burn-In Mean?
Burn-in is permanent discoloration which can occur on areas of an electronic display. Burn-in often occurs in cathode ray tube displays, especially ones based on older CGA and EGA CRT technology; this is due to the cumulative non-uniform usage of pixels. Methods such as screensavers and switching off the display when not in use are used to prevent burn-in.
Techopedia Explains Burn-In
Burn-in usually occurs when a non-moving image is displayed on a monitor for a long period of time. This results in the burning of phosphors in the monitor, with the image often faintly visible even after the display is switched off. Burn-in occurs due to the light-emitting pixels decaying over time, losing their coherency and color accuracy. The effects of burn-in are immediate and cause continual degradation of image quality.
