LCD stands for Liquid Crystal Display. Originally designed for electronic display devices, now this technology is widely used to manufacture high-resolution televisions. Liquid crystal televisions work on Thin Film Transistor (TFT) technology. Their screen consists of a liquid crystal layer sandwiched between two transparent layers. A bulb placed behind the screen illuminates the TFT panel. Upon receiving the data, the liquid crystals align themselves in various degrees. The alignment of the crystals blocks unwanted light and only required light gets transmitted. The degree of alignment decides what color and contrast will be filtered through the panel.
When LCD TVs were first introduced, their major competition was the plasma TV. LCD and plasma televisions coexist and compete even today. Each has its own merits and demerits. LCD TVs cannot produce as much color or contrast as plasma TVs, but their overall picture quality remains better than a plasma TV. They can produce better resolution per square inch of their surface than a plasma TV.
Initially LCD TVs suffered from problems related to viewing angles. They could not be viewed from extreme horizontal angles. But now, LCD TVs are so designed that even at angles as wide as 160 degrees, they can be viewed with clarity.
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