Flat-panel computer screen. This will consist of a backlit liquid crystal display (LCD) that is thin, and so smaller and lighter than a cathode ray tube (CRT) monitor, and also uses less electricity. It uses liquid crystals to filter light from a source behind the screen (backlit). CRT monitors however, use electron beams to trigger light emission from a screen. LCD technologies vary depending on the method used to electrically control the properties of the liquid crystals. The dominant technology is thin film transistor (TFT) technology that uses transistors to control the light transmitted at each point (pixel) on a grid covering the screen.
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