Bad Crystal as well and copes with the Dark patches on a plasma screen. Dark patches appear on plasma screens if an area of the screen does not change for a long period of time. For TV input, channel logos often burn into the screen. This can also occur on LCD screens and is more correctly referred to as image persistence.
Unlike the free software Bad Crystal has a speed regulator that will allow you to increase the likelihood get rid of defective pixels
Bad Crystal helps fix stuck pixels and image persistence on LCD screens and reduces burn-in on plasma screens. This is the safest and cheapest way to get rid and to protect your monitor from defective pixels