A computer set to “screen saver” mode uses nearly as much energy as when it is being used, so switch off your screen when you leave your desk. It is a myth that screen savers reduce energy use.
Screen savers were developed to mitigate a problem called “screen burn-in” that can occur in both cathode ray tube (CRT) and liquid crystal display (LCD) computer monitors and TV screens. Burn-in occurs when a given image, such as a logo or a menu bar for a computer program, appears on a monitor for a long period of time. The mechanics are different for CRT and LCD displays, but the result is essentially the same over time, these long-duration images can get “burned” into the screen so that the viewer sees a “ghost” of these images even when they’re not supposed to be there. By using a screen saver, you prevent any specific images from being displayed in the same location when your computer is dormant for a long period of time, thus preventing burn-in. But it takes just as much energy to display a screen saver on your screen as it does to display any other program. To save energy, adjust your computer’s power management settings to automatically shut the monitor down after a specified period of idle time, and simply turn off the monitor if you are not going to be using it for 15 minutes or more.
Screen savers were developed to mitigate a problem called “screen burn-in” that can occur in both cathode ray tube (CRT) and liquid crystal display (LCD) computer monitors and TV screens. Burn-in occurs when a given image, such as a logo or a menu bar for a computer program, appears on a monitor for a long period of time. The mechanics are different for CRT and LCD displays, but the result is essentially the same over time, these long-duration images can get “burned” into the screen so that the viewer sees a “ghost” of these images even when they’re not supposed to be there. By using a screen saver, you prevent any specific images from being displayed in the same location when your computer is dormant for a long period of time, thus preventing burn-in. But it takes just as much energy to display a screen saver on your screen as it does to display any other program. To save energy, adjust your computer’s power management settings to automatically shut the monitor down after a specified period of idle time, and simply turn off the monitor if you are not going to be using it for 15 minutes or more.
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