screen saver(n = noun.artifact) - (computer science) a moving design that appears on a computer screen when there has been no input for a specified period of time; "screen savers prevent the damage that occurs when the same areas of light and dark are displayed too long"
is a kind of design, figure, pattern

active matrix screen, computer screen, crt screen, diffusing screen, face saver, fire screen, life saver, projection screen, rood screen, saver, screen, screen actor, screen background, screen door, screen font, screen memory, screen off, screen out, screen pass, screen test, silk screen print, silver screen, smoke screen, touch screen, wide screen, window screen