Development trend and risk of LED market

In fact, the discussion about the prospect of LED is a cliche. Because of its outstanding advantages such as long life, low energy consumption, small volume, fast response, earthquake resistance and low temperature resistance, its application field is extremely broad. According to preliminary calculation, the annual power saving of LED lighting in China is equivalent to the annual power generation of Three Gorges Power Station, which can reduce 80 million tons of CO2, 650,000 tons of SO2 and 320,000 tons of NO2. It is not an exaggeration to call it "a revolution in the history of human lighting".

The development of semiconductor lighting is very rapid. Statistics show that since its birth in 1960s, the cost of LED has decreased by 10 times, and the luminous efficiency has increased by 10 times every ten years. And technological progress always exceeds market expectations. In recent years, with the rapid improvement of luminous efficiency, low power consumption, environmental protection and other characteristics, LED products have gradually expanded in traffic lights, automobiles, outdoor billboards, lighting, LCD backlight and other market fields. Driven by the government of China, semiconductor lighting will soon become a bright industry in China. According to the prediction of American authoritative organization, by 20 10, the global LED application market will be 50 billion US dollars; China LED application market is 60 billion RMB.

LED backlight is the most eye-catching, with high lateral light output efficiency. As a kind of liquid crystal backlight, LED has the characteristics of long life, high luminous efficiency, no interference and high cost performance, and has been widely used in electronic watches, mobile phones, BP machines, electronic calculators, credit card readers and so on. With the miniaturization of portable electronic products, LED backlight has more advantages, so the backlight manufacturing technology will develop towards thinner, lower power consumption and uniformity. LED is the key device of mobile phone. An ordinary mobile phone or PHS needs about 10 LED devices, while a color screen and a mobile phone with camera function need about 20 LED devices. At present, the backlight of mobile phones is very large, and 3.5 billion LED chips are used every year. At present, the output of mobile phones in China is very large, and most of the LED backlights are imported, which is an excellent market opportunity for domestic LED products.

From the IT point of view, LED backlight is an important year for the development of 20 10. With the advantages of mercury-free green environment protection, dynamic control of backlight area, low carbon and energy saving, ultra-thin streamlined appearance, high color reproduction and realistic display, LED backlight has greatly promoted the pace of replacing CCFL. Various backlight manufacturers have reached a cooperative relationship with LED manufacturers, and * * * put forward a scheme combining the latest technology of large-size light guide plate. Ultra-thin, energy-saving, environmental protection and high color quality LED backlight will surely become the next strong trend of backlight development.

However, LED backlight module is not without its shortcomings, and power consumption is still an important problem that LED backlight module must overcome. With the increasing use of led, in addition to increasing power consumption, it will also lead to the problem of temperature rise. Therefore, cooling system and sensor must be added to solve this problem, so it is thicker than CCFL backlight products in thickness.

Although LED backlight technology has many advantages, it also has inevitable difficulties in popularization and application. First of all, the products using this new technology have no advantage in price. Moreover, LED technology is in the hands of a few manufacturers, which brings difficulties to its popularization. Finally, the reason is the technology itself. LED backlight technology has not done well in luminous efficiency, current control and heat dissipation. In the long run, LED backlight technology as an alternative technology product will certainly exist slowly. Of course, with the rapid development of Samsung and LG's new panel technology, it may be widely used in advance.