How-To Geek

Dead Pixel

A dead pixel is a pixel in a liquid crystal or other non-CRT display that no longer responds to input from the controlling computer and is incapable of displaying any colors. Dead pixels are typically either the result of a manufacturing defect (if present immediately from the time a device is unpackaged) or from physical damage to the screen (if they appear after the device has been in active use for a period of time).

There is generally no fixing a dead pixel which, depending on the application and level of user annoyance at the presence of the visual flaw in the screen, might necessitate replacement of the entire display.

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