About LED,Since the 1960s, Light Emitting Diode LEDsince the invention of this new light source has been widely used in the display, lights, landscape LED light source has been deep into our lives. Appear early in the LED, as its more common lighting appear. But with the technology, LED application field has become even more broad, including LED TV, LED display, LED printer, LED projector and other products have emerged. Other than incandescent and fluorescent lamps, LED light source shortest appearance time, but precisely because of this, the more its own advantages. It can be said, LED light source has been identified as the next most important source. Here, the author of the technical characteristics for the LED light source for a preliminary discussion with you. Light Emitting Diode LED, is a direct electrical energy into light-emitting display devices. LED made of gallium arsenide by the early, as technology advances, and now they use a gallium phosphide (GaP) and other semiconductor materials. The greatest feature is the LED has luminous efficiency, energy-saving environmental protection, fast response, resistance to vibration. The initial LED light source can be issued only to the color red, 90 into the end of the 20th century, LED has been able to emit red, blue, orange, yellow and green color. Eventually, into 1998, the white LED light source R & D success, and now three-color RGB LED light source has been large-scale applications. In our common display devices, the most common is the color white LED and RGB tri-color LED. Equipment compared to ordinary light,Light Emitting Diode LED light source with energy saving, high luminous efficiency, wide color gamut, etc., which is what most of the shortcomings of traditional light sources. Previous article, we mentioned the most current source of incandescent, fluorescent and LED lights. In the light effect, the incandescent light efficiency in the 12-24 lumens / watt, fluorescent light efficiency was 50-120 lumens / watt. According to statistics, in 1998, has just launched white LED light source luminous efficiency can be when only 5 lumens / watt, up to 2005 when the luminous efficiency has been up to 50 lm / W, 2015 LED light efficiency may reach 150 - 200 lumens / watt. In addition, the industry statement, LED every 10 years, the price dropped to 1 / 10, while the performance is increased 20 times. Most readers are aware, we often use incandescent lamps and other household have a shorter life span, usually a year or two will need to replace light bulbs, and LED bulb life 100,000 hours theoretical value (usually a nominal 20,000 hours), life expectancy at 10 years on, LED bulbs, but also greatly reduces the user into the latter part of the cost of maintenance or replacement. LED dot matrix LED is generally used, if you need higher brightness LED bulb thousands of permutations and combinations. However, LED bulbs fast response, especially in the large-screen display, fast switching characteristics can be used to transform different picture. In the above we mentioned, the current Light Emitting Diode LEDdivided into RGB color and white LED. White LED cheaper, lower power consumption, and a wider color gamut RGB LED, expensive. LED backlighting in TVs, monitors, notebook screens applications to ensure longer life, lower power consumption, wider color gamut, color and more uniform. Meanwhile, LED also contributed to these appliances planar light source (LED screen thinner). LED bulbs because they do not contain mercury, the environmental pollution is also greatly reduced. In addition, LED light source also has a shock-resistant, wide color gamut and so on.