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The full name of LED is ________.

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Answer: Light Emitting Diode.

Answer analysis: The full name of LED is Light Emitting Diode, which is translated into Chinese as light-emitting diode. LED is a semiconductor electronic component that can emit light, and its core is a chip made of semiconductor material. When current passes through the PN junction of the semiconductor, the electrons and holes recombine to release energy, which is emitted in the form of photons, thereby generating light. Because LED has the advantages of energy saving, environmental protection, long life, small size, and high light efficiency, it has been widely used in lighting, display, indication and other fields.

The light-emitting principle of LED is based on the electroluminescent effect, that is, the electrons and holes in the semiconductor material are excited by the current to recombine to emit light. In addition, LED also has the characteristics of fast start-up, rich colors, and strong controllability, which makes it occupy an important position in modern lighting and display technology.

In general, LED, as a new type of solid-state light source, is gradually changing our living and working environment with its unique advantages and broad application prospects.

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