LCD screens have replaced heavy, bulky and less energy-efficient cathode-ray tube (CRT) displays in nearly all applications since the late 2000s to the early 2010s. LCDs can either be normally on (positive) or off (negative), depending on the polarizer arrangement.
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LCD (Liquid Crystal Display) is a flat panel display technology that uses Liquid crystals to regulate light. The fundamental concept is the control of light waves via liquid crystal materials positioned between two polarized screens.
LCD is a flat panel display technology commonly used in TVs and computer monitors. It is also used in screens for mobile devices, such as laptops, tablets, and smartphones.