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Ahh, OK masseur.
Copied from the link given in masseur's post:
Dead pixels
Active matrix TFT LCD panels achieve their beautiful images, in part, because of the individual transistor placed at each pixel, which controls the backlight shining through a given pixel. In actuality, each pixel or dot is made up of 3 sub-pixels (one red, one green and one blue) with each having its own transistor. Occasionally, these individual transistors will short, or remain open, resulting in a defective pixel. There are two phenomenon which define a defective LCD pixel: A "lit" pixel, which appears as one of several randomly placed red, blue and/or green pixel elements on an all-black background; or a "missing" or "dead" pixel, which appears as a black dot on all-white backgrounds. The "lit" pixel phenomenon, more common than "missing/dead" pixels, results when a transistor occasionally shorts on and results in a permanently "turned-on" (red, green or blue) sub-pixel.
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Posted: 2003-12-07 17:11:37
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