Which term is used to describe the effect of displaying the same static picture for too long on a screen?

The term that describes the effect of displaying the same static picture for too long on a screen is known as burn-in. Burn-in occurs when certain pixels on a display retain a ghostly image of the static content that has been shown for an extended period. This phenomenon is particularly prevalent in older CRT and certain types of OLED displays, where the phosphors or organic compounds can become permanently altered due to the sustained illumination of particular pixels.

Burn-in can lead to noticeable image retention, where the outlines of the previously displayed image, such as logos or icons, remain visible even when the screen shows different images. This can be particularly problematic for users who utilize their screens for applications that display fixed images for long durations.

The other terms like fuzzy image, dead pixels, and flashing screen do not refer specifically to this phenomenon. A fuzzy image might relate to poor resolution or focus, dead pixels refer to pixels on a display that do not light up at all, and a flashing screen indicates a problem with the display signal or connection rather than prolonged static display. Thus, burn-in is the correct term for this specific issue related to static images on screens.