![]() ![]() When this is done over the entire pixel grid in patterns, then you see those patterns on the screen.Īt a very basic level, the way pixels work is a voltage change alters the pixel to allow more or less light through. Without a voltage the pixel is opaque and blocks the screen's backlight from transferring through it, and when a full voltage is applied then the pixel allows full transmittance of the backlight. ![]() Unlike older cathode ray tube (CRT) displays that scan an electron beam over a phosphor screen to create light, LCD displays are composed of a fixed grid of tricolor pixels that change transparency based on a range of voltage levels provided by the monitor's controller.
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