AC-LED technology leads the new trend of LED lighting market

At present, the global LED enterprises have achieved remarkable results in the research of AC-LED technology. To Seoul semiconductor, Sony light source, long express as the representative of the emerging LED companies are AC-LED technology to lead the development trend of the global lighting industry. AC-LED technology to lead the new trend in the LED lighting market is known, DC driven LED products to hide a lot of drawbacks.

At present, whether it is household electricity, commercial electricity or public electricity, mostly alternating current (AlternatingCurrent, AC) of the power supply, while the traditional LED lighting to DC (DirectCurrent, DC) as a driver, DC-LED as traditional lighting purposes, must be accompanied by the "AC-DC conversion device" AC dc. But because of the existence of the power supply of high cost, low light conversion efficiency, short life, contrary to the original intention of the LED, high efficiency and energy saving, development can be directly used in AC AC-LED lighting products online, has become the main direction of LED enterprise technology, one of the main topics for future exploration and LED lighting industry.

At present, the global LED enterprises have achieved remarkable results in the research of AC-LED technology. To Seoul semiconductor, Sony light source, long express as the representative of the emerging LED companies are AC-LED technology to lead the development trend of the global lighting industry. AC-LED technology to lead the new trend in the LED lighting market is known, DC driven LED products to hide a lot of drawbacks. They need to be used in conjunction with the rectifier, its life is only 20 thousand hours, but the DC drive LED product life is as long as 5-10 hours.

Therefore, the DC drive LED products "life" will need to replace the rectifier, if used for fixed lighting device will cause inconvenience. The development of high reliability, small size, low cost LED drive circuit has become one of the key applications of LED lighting.

Thus, AC-LED technology came into being. It is a kind of integration of a variety of processing technology of LED products, including a variety of devices or cores, no additional transformer, rectifier or drive circuit, AC power grid can be directly driven by the AC. This makes LED products without converter can be applied to the Home Furnishing and the office of the exchange of electrical plugs (100-110 /220-230 volts volts), not only significantly reduce the circuit cost, but also to avoid the energy loss in the process of power conversion.

In addition, on the other hand, in order to give full play to the advantages of small size LED, the complex structure of LED DC power supply module and LED chip are often together, be compactly installed in the light body within the narrow, LED chip and power is the heat source, making the environment temperature, thus efficiency and working life of DC power supply the further decrease.

The results show that the DC power supply with complex structure is greatly affected by temperature, and the working life of the peak efficiency is less than 10 thousand hours, which is much lower than the working life value of the LED chip (-10). AC-LED technology is completely broken through the technical bottleneck: the basic concept is not the use of additional (except the AC-DC conversion chip) and rectifier circuit, a current limiting resistor to collocation way directly to AC drive LED, to avoid the loss of efficiency, the use of constant current power supply caused by large size, complicated structure and limited life.

The application of AC-LED instead of the traditional constant voltage constant current power supply, remove redundant electronic components, thereby reducing the cost, the LED lamps miniaturization, reliability and long service life fields have achieved greater success. Since the AC-LED can be directly connected with AC, the use of the rectifier transformer can not be used in the optimization of the cost and convenience of the development of the application can not be ignored. Therefore, many industry insiders predict that AC-LED technology will lead the new development trend of LED lighting market.