LED lighting industry hot market cold phenomenon

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LED luminous efficiency is divided into internal, external quantum efficiency for the internal quantum efficiency of the basic up to 80% or even 90% of the outer quantum efficiency can not emit photons absorbed by the LED to produce the junction temperature rise for heat while reducing quantum effects, which should be the reason why LED total luminous efficiency reached only the general level of the traditional lighting. Therefore, to find the balance between the two is an effective way of scientific luminous efficiency. led light panel luminous efficiency will directly reduce the LED particles to bring costs down.

The vast majority of white LED applications are small pipe-line less than 60mW, and because of this packaging technology will bring serious heat problems, so only suitable for light applications. The 3528 package now occupy the main position of the LED lamp, but its more than 70 percent of the cost for the cost of aluminum, copper, shell and processing, the high cost of the patch package to hinder the popularity of LED lighting.

LED packaging costs accounted for 50%, in order to reduce the overall cost of the LED, we have to choose a more suitable package structure, so the c hange to the existing package structure, to achieve a reasonable packaging costs, will be the most efficient LED lighting market acceptance The most direct passing. Of course, the LED chip with the process, shipments increased, larger wafer production process, also continue to reduce costs, reduce the rate of 20 percent annually in recent years, if we can package costs from the total cost 50% reduced to 20% to 30% of LED lighting applications at the meeting to a new order of magnitude size of the market.

LED chips account for about 15 percent of the cost of the entire lamp, but now the real than traditional energy sources, LED chip, but only a handful. Thermal design, a constant current power supply | voltage regulator design, the overall control technology, LED lighting needed to be resolved before wider application of technical problems. At present, the heat dissipation and reliability constraints of the life cycle of LED lighting products, thermal design it is necessary to the LED chip and the heat dissipating path as short as possible, have sufficient thermal path to reduce heat resistance.

LED lighting technology to the mainstream light source should be dedicated CoB (chiponboard) package white LED module, the CoB package lamps optical requirements, it can also reduce the cost of the second optical design. The CoB package of the LED module in the backplane

Installed on multiple pieces of LED chips, the use of many pieces of the chip can not only improve the brightness, but also contribute to the achievement of the scientific and rational configuration of the LED chip, reduce the amount of current of the input of a single LED chip to ensure high efficiency.

Distributed constant-current technology, and continually optimize the overall solution of LED constant current drive light, can continue to improve the luminous efficiency of the LED module. The same time, the miniaturization of the switching p ower supply, continue to optimize the thermal design, and to improve the sealing of the LED module to improve the cooling capacity. The necessary technical conditions for all the LED lighting market to grow up, put it bluntly, the power commercial led lighting  is the weakest link, which seriously affected the level of quality of the LED lamps, many domestic enterprises, product quality is indeed necessary to improve time.