What is a bad pixel?
A typical 17″ monitor has a native resolution of 1280 pixels (horizontal) by 1024 pixels (vertical). As mentioned above, each pixel requires three subpixels of red, blue, and green to produce an accurate color image. For active-matrix TFT monitors, each subpixel is controlled by a transistor which means a typical 17″ monitor has (1280 horizontal x 1024 vertical x 3 subpixels) for a total of 3,932,160 transistors. If there is a problem with any of these transistors, it creates a bad pixel on the display. Bad pixels are often seen as black, white, red, green, or blue dots on the screen.
