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Asleep or Dead? (Dead or Stuck Pixels?)

speak today about a problem that unfortunately is becoming more frequent on all our technology products such as telephones, computers, TV LED or LCD, eBook reader, and who on and so forth.

The problem to which we refer is that of the defective pixels. Here's how to distinguish a defective pixel, which can theoretically be recovered, for a pixel asleep, or dead and therefore not recoverable. A pixel is our fault eyes "black", or off (dark). Take for example an image of a solid bright color. We will see in it a black dot. In that case it is dead pixels, asleep or in technical jargon "dead pixels". We see in the image next to the small black specks at the top. That's a case of hundreds of pixels asleep for which you can request a replacement product. In fact, if dead pixels are a few (more than ever defined by a manufacturer of such devices) is not possible to obtain replacement of the device will display.
but now we see how the pixels are asleep or "stucks pixels. In that case the pixels are visible on a dark background (such as a solid black) as they are much brighter than a pixel in normal conditions. We can see in the image on the right in a green color. In fact, when a pixel falls asleep "is visible as a colored dot that can take one of three colors RGB. This is because in an active matrix, which has a number of pixels of some Miglionico, there are a few transistors in the pixels that can not work as expected and to create the effect of pixel asleep. As reported in an article by Apple , discard the display showing a few pixels dead or asleep, would lead to an inevitable increase in the cost of the devices. So in summary, while for the "dead pixels" there is nothing to do, for "stucks pixels" we have some solutions to consider.
We may use web applications in Java that are usually quickly switch between the various shades of color, in order to stimulate and awaken the pixel in question.

Below are links to some sites where you can find these applications
http://www.jscreenfix.com/basic.php
http://www.ismashphone.com/2010/05/iphone-stuck -pixel-fixer.html
We see in this video are actually like alternating colors to stimulate the pixels:

Other methods exist but are slightly more risky, such as massage directly with the eraser of a pencil, or with the same fingers, the pixel asleep.
The advice we can give is to try JScreenFix if the defective pixels are "few". If you have a large number of defective pixels is recommended intervention assistance.