Afterimages appear when I continuously display one image on screen and change the image to different one, is this a problem?

When a pattern is continuously imprinted on an LCD monitor screen, "afterimage" or "residual images" may appear. Unlike CRT monitors' "burnt phosphor" by which an image is permanently etched into the phosphor. LCD monitors' "afterimage" is reversible. To reverse this phenomenon, run the monitor with a gray pattern displayed or turn the power off completely. It all depends on the level of afterimage, though, it usually takes about three times the amount time for the afterimage to disappear as the time the original image was displayed that caused the phenomenon. To prevent this problem, it is recommended to set the "Off Timer" function. Please note that the afterimage is different from the ghost or blur of an image that may appear when displaying motion pictures due to slow response times.