Looks to me like you left your monitor and computer left on this site without a screen saver coming on. What you posted is common for monitors getting words/etc "burned" onto their screen.

The best thing to do is to set up a screen saver to come on after 5 minutes of no use, or shut off your monitor when you're not using it, and avoid leaving the same image/text on the swcreen for prolonged periods of time.

It should go away after time, but if it doesn't go away soon, it's there for good.