The first liquid-crystal display (LCD) television was invented in 1972 at Westinghouse in Pennsylvania. Like many important inventions, it didn't become a common sight in the average home for several decades. It took the combined efforts of many researchers and several corporations to create a display of acceptable quality in the late 1990s. In the early 2000s, another innovation helped set the stage for the proliferation of LCD displays: Multilayer Optical Film. Invented at 3M Company, Minneapolis, Minn., the film represented a breakthrough in fundamental physics and greatly improved screen visibility and power consumption. Today, the film is an important component in most of the 245 million LCD-based displays sold globally.
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