Noun
(computer science) a moving design that appears on a computer screen when there has been no input for a specified period of time
Source: WordNetscreen-saver
I have a beautiful platter of various fruits as my computer screen saver. It's a constant reminder to eat healthy! It helps me to make healthier food choices throughout my day. Drew Sidora
screen savers prevent the damage that occurs when the same areas of light and dark are displayed too long Source: Internet