Prevent screen savers from being burned in

Is there a real reason to use a screensaver?

Aside from entertainment, is there a real reason to use a screensaver? Does it somehow save your screen?


Back when screens suffered from burn-in. Nowadays they are mainly used for fun and to lock your computer when you are not around.

The Apple TV includes a screen saver (photos from the photo album) and regular changes to the music playback interface to prevent plasma TVs from being burned in.

Burn in

There is a myth that LCD displays don't get burned in. This myth is wrong. I have personally experienced that LCD displays are burned in several times.

The big idea was a customer of ours with a display that had to be visible around the clock. This is a haulage company where the display has to be visible when the driver comes in to check his tasks even in the middle of the night. The window manager artifacts on the screen that appears in this app soon burned their way into the screen. it was only two or three weeks.

However, this was an exceptional situation. LCDs in general are less vulnerable (although I hope Not immune) for this phenomenon. In most situations this is not a problem.

power consumption

If you want to save a few bucks, you can cut power consumption with the blank screen option. Just make sure you've got it set correctly so that the backlight is actually off and not just obscured by blackened pixels or you won't actually be doing anything.


You can set your computer to lock automatically when the screen saver is activated. It's not a big deal at home, but many businesses require it.

Yes, it used to be a function to prevent images from being "burned" into CRT monitors:

Before the advent of LCD screens, most computer screens were based on cathode ray tubes (CRTs). When the same image is displayed on a CRT screen for an extended period of time, the properties of the exposed areas of the phosphor coating on the inside of the screen change gradually and permanently, eventually resulting in a darkened shadow or "ghost" image on the screen.

Therefore, the provision of a moving image has provided a remedy here. Now they're really only there for entertainment.

I find the screensaver useful for privacy:

  • They hide the programs / documents that are open on the screen
  • Most can be configured to lock the computer and require a password to gain access to the session.

When I worked in IT, we deactivated the screen saver to save electricity. If you want to do something useful, there are screensavers that can defragment your hard drive or do scientific calculations for things like Folding @ home or SETI @ home.

My screensaver is a selection of pictures of my smiling children. They remind me why I work so hard here, yes there is at least one very good reason for a screensaver.

I generally have no purpose for them because I always have my power settings that turn off my monitor in 15 minutes. So there is really no time to enjoy the SS. :)

As others have said, this is to prevent burn-in. However, this is not only true for CRTs. When you have a computer connected to a plasma television, you want the screen saver to turn on early and often.

A screen saver is used to prevent burn-in or to prevent pixels from keeping the same color from being exposed to a particular color for too long.

However, this is no longer needed as most users no longer use CRTs.

There's a pretty good description on the screen saver wiki page.

Screen savers were primarily useful to prevent burn-in when using a CRT monitor (the big, heavy ones). With the popularity of LCD screens, this need no longer exists today. Nowadays they are more aesthetic and act as a substitute for locking your computer if you are away for too long.

The only compelling reason these days is likely to be the IT guideline Your company demands it. Don't laugh, I've seen this more than once.

I love screensavers and use them to secure my device while I'm away.

I always enable "Require password to wake this computer from sleep mode or screen saver" in the security settings.

If you're using it as a safety measure, make sure you don't get the warning that the display will go into sleep mode before the screen saver activates. If you receive this warning, the screen will not lock once the display is asleep.

I also set hot corners to activate the screensaver instantly. From my old days, "After Dark" runs Upper Left to turn off the screen saver and Upper Right to turn it on immediately.

Plus, writing screensavers is fun.

The best screen saver is one black screen. Just set the password lock in your office. When you leave the office or home PC for a while, switch the monitor manually off , around electricity to save.

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