Canyuan: three factors determine the popularity of LED lighting speed

Canyuan photoelectric research director Dr. Pan Ximing pointed out that, according to the prediction of research institutions, by 2010 the global market growth potential is the largest white LED applications for the lighting market, but there still exist some problems in application, including the price is too high, the efficiency is too low, the white light collocation need to warm the spectral region in which the price of mobile. The biggest impact factors. It is expected that with the continuous development of LED technology, will help to improve the efficiency of LED, prolong the service life, thereby reducing the cost of LED lighting applications, accelerate the popularity.

Pan Ximing said, LED in the lighting display applications has been more and more widely, especially in the signal lamp application, as a mature technology with LED signal compared with the traditional signal lamp saves energy by more than 85%, will completely replace the traditional signal lamp. However, there are still some problems in lighting application. Compared to 1000 lumens, the traditional fluorescent lamp price as long as $2, but the price of LED lights to $20, the price difference of 10 times, the relative speed of the impact of the application of universal.

However, with the LED efficiency is expected to increase, the cost will be reduced. According to the company's research data, when the luminous efficiency is increased by 2 times, the drive current is increased by a factor of 3, the cost of packaging is reduced by half, the overall cost of LED lighting applications will reach a reasonable range. As for packaging, the efficiency of phosphors will also affect the overall efficiency of LED.

In addition, the cooling technology is to extend the life of LED, reduce the cost of the key. Because of the high power LED input power is only 15%-20% into light, the rest of the 80%-85% is transformed into heat, if not timely discharge the heat, the interface temperature of heat generated by the chip will cause increased, the light output component is reduced, wavelength will be changed slightly, LED's life will be reduced. If the component temperature is reduced to 10 DEG C, the service life of the component can be increased by a factor of 1.9.

Source: Lean news