Perhaps LEDs are a bit strange to consumers, but it is speeding up our family. In the near future, LED will not only replace our current lighting devices, but also replace the current projector's light bulbs and LCD TV backlights.
LED advantages are significant
LED, that is, a semiconductor light emitting diode. LED backlight has long life (100,000 hours), high color purity, high color reproduction rate, high brightness, low temperature, good adaptability, good reliability, no mercury pollution, etc., in the future LCD backlight field Will definitely occupy a pivotal position. As the brightness continues to increase, LEDs can be made into a variety of lamps, and will gradually replace CCFL (Cold Cathode Fluorescent Lamp) backlights, becoming the most important LCD backlight.
The average life expectancy of CCFL is usually around 20,000 to 50,000 hours, while the average life of LED can reach more than 100,000 hours; the starting voltage of CCFL is up to 1600 volts, and the voltage after startup is also 800 volts; and the starting voltage of white LED Only 24 volts, the voltage after startup is lower, only 12 volts; CCFL contains mercury, LED does not contain mercury, is a green product.
According to Niu Deli, Daktronics product consultant and production director, LEDs are made up of several layers of very thin doped semiconductor materials, one with excess electrons and the other with electrons to form positively charged holes. When working, current flows through, electrons and holes combine with each other, and excess energy is released in the form of light radiation. Light-emitting diodes of different luminescent properties can be obtained by using different semiconductor materials. Different from ordinary cathode ray tube television (CRT), plasma screen (PDP), liquid crystal display (LCD), LED display screen is a display screen composed of semiconductor light-emitting diodes as light-emitting elements, because it has ultra-high brightness and vivid Color, low voltage use, low power consumption, long life and other advantages, although the viewing angle can not be 180 degrees, the pixel pitch can not be made too small (generally ≥ 3 mm), but the LED display has its unique advantage Large displays, especially in light-filled indoors and outdoors, are gradually replacing other products, and as technology continues to evolve, it will replace the current backlight.
According to the statistics of the LED Display Application Branch of China Optical Optoelectronics Industry Association, the sales of LED display market in China reached 7.2 billion yuan in 2007, and will maintain a high growth rate in the next few years. It is believed that as LED display technology continues to innovate, costs continue to decline, and people's awareness of LED products continues to deepen, the application range of color LED displays will be further expanded and will play a significant role in social and economic development.
1 2 Next Page
Dry Mortar Batch Plant supplier
Bolted Silo,Grain Dryer Co., Ltd. , http://www.nsgraindryer.com