How does something “burn” into a screen?
In: Technology
Screens are grids of things called “pixels,” which are the little tiny unit of light. Each pixel has red, green, and blue color.
Pixels are not infinitely reusable. They can wear out from being used too much, like any electronic device. When specific pixels all get worn out very heavily in the same way over and over for a long time, they get damaged, so they don’t display colors correctly anymore. When that happens, you will see a “ghost” of whatever image was displayed on screen too frequently. That image is thus “burnt” into the display, and won’t go away. Some types of mild burn in can be adjusted for, but most of the time, once an image is burnt into the display, it’s burnt in forever and there’s nothing you can really do about it.
Sometimes, burn in can be so dramatic that it actually leaves a permanent, visible image even when the display is turned off. This doesn’t usually happen with LCD or LED TVs, but it’s possible with the old CRT displays.
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