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LED (Light Emitting Diode) is a solid compound semiconductor components, Chinese names for "light emitting diode". Glow diode of core part is by p type semiconductor, and n type semiconductor by composition of chip, in p type semiconductor and n type semiconductor Zhijian has a transition layer PN knot, injection of minority carrier and most carrier (respectively for negative of electronic and positive of electric hole) in composite Shi will to extra of energy to light of form release out, to to power directly conversion for light, so belonging to cold sexual glow without warm lamp time, while has electricity province, and life long, and reaction fast, and volume small, and reliability high, and Good endurance, and many other benefits. LED backlight for wide applications in flat panel display, portable device back lighting, architectural lighting, indoor and outdoor display, instrument lights, traffic signals, lighting, infrared devices for motor vehicles and other markets, has in recent years become the optoelectronic industry one of the most rapidly developing areas.
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