Can LCD screens experience pixel burn in?

Yes, they can. I've seen it in my repair ventures, but it's very, very seldom that it happens. It's also not known as ghosting, but is known as burn-in. Ghosting is what's known as another image that appears on the screen, the same as the one you're watching. It can be very close to the original images or a few inches away from the original image. This is usually cause by a reflection in the signal path, allowing the same signal to be received a bit later than the original, or it can occur in the cables used to connect the TV. LCD (Liquid Crystal Display) screens do not experience pixel burn-in, also known as "ghosting" like older plasma models could. Pixel burn-in occurs when an image is left on the television for a long period of time. When the TV is later turned off, the image that was previously on the screen can be faintly seen on the screen, known as ghosting.