LED lighting industry why the thunder big market little rain?

In full swing to describe China's LED lighting industry is not too much, but it is undeniable that China's LED lighting industry is hot, cold market. Why is there such an embarrassment? This is because, in order to improve the current technology of large power LED lighting and efficient light source compared to the existing and there is no obvious advantage of energy saving, while the initial input costs are much higher. Large current in improving the efficiency of light is also a lot of heat into the heat treatment, if the heat treatment is not good and will greatly reduce the life of the LED, with the radiator and increase the cost and volume, so that the advantages of LED light source disappear. So, everything is not up to the requirements of the lighting market LED technology provoke disaster.

The luminous efficiency of LED is divided into internal and external quantum efficiency and internal quantum efficiency for basic up to 80% or even 90%, but due to the quantum efficiency can effectively emit photons absorbed by LED generated heat, cause the junction temperature rise, while reducing the internal quantum effect, this should be the reason why the LED overall luminous efficiency only reached the general level of traditional lighting the. Therefore, to find a balance between the two is an effective way to achieve scientific luminous efficiency. The LED luminous efficiency will be improved by reducing the cost of direct reduction of LED particles.

At present, the majority of white light LED applications are less than 60mW into the tube, because the packaging process will bring serious heat problems, it is only suitable for the application area of the lamp. Now 3528 chip packaging occupy the main position of the LED lamp, but its cost is more than 70% of the cost of aluminum heat sink and processing, making the high cost of chip packaging hinder the popularity of LED lighting.

The LED packaging costs accounted for 50%, in order to reduce the overall cost of LED, we must choose the packaging structure more suitable, so changing the package structure of the existing package, to achieve a reasonable cost, will be LED lighting market acceptance of the most effective and most direct way. Of course, LED chip technology, with the increase in shipments, with more large size wafer fabrication process, are also constantly reduce costs, at a rate of 20% annually in recent years in the lower, if the package cost from the current account for the total cost of 50% reduced to 20% to 30%, the application of LED lighting to a meeting the new order of the size of the market.

At present, about 15% of the total cost of the LED lamp, but now really can save energy than traditional light LED chips. The design of heat dissipation, constant current power supply, the overall control technology, but also LED lighting technology has been widely applied to solve the problem before. At present, the heat dissipation and reliability are the constraints of the LED lighting product life cycle. The first one is to design the LED chip and radiator parts as short as possible, and the two is to have enough heat dissipation path to reduce the heat resistance.

To LED lighting technology, the main light source should be used CoB (chip on board) for white LED module package, according to the requirements of the Co lamp optical B package, and also can reduce the cost of the two optical design. The LED module CoB package installed multiple LED chip on the motherboard, the use of multi chip can not only improve the brightness, also helps to realize the scientific and reasonable configuration of the LED chip, the input current to reduce the amount of a single LED chip to ensure high efficiency.

Distributed constant current technology, and constantly optimize the LED constant current drive light source, the overall solution, and continuously enhance the light efficiency of the LED module. At the same time, miniaturization of switching power supply, continuous optimization of heat dissipation design, as well as to improve the sealing performance of the LED module to improve heat dissipation. This is all the necessary technical conditions to grow up LED lighting market, bluntly said that the current LED lighting power supply is the weakest link, seriously affect the quality of LED lamps, and a large number of domestic enterprises product quality indeed when necessary to improve.

Let the cost down, so that technology is mature industry chain. The upper, middle and lower reaches of the LED industry chain are used for epitaxial material and chip processing, product components and module packaging, display and lighting applications. LED epitaxial wafers and chips accounted for about 70% of the industry's profits, LED packaging accounted for about 10% ~, LED applications accounted for about 10% ~ 20%. According to statistics, the production of semiconductor lighting enterprises in China more than 3000, 70% of which focus on the industry downstream, domestic LED epitaxial material, chip with low power LED chip, and more than 80% devices rely on imports.

In recent years, the government has built a number of LED pepper lighting industry base, but China's LED industry is still 70% of the heat of the LED for the people to compete for the share of the profit of to 10%. This means that the control of the core technology of LED foreign companies if not to pull LED low cost, simple LED downstream of the Chinese LED industry only to achieve low-cost and allow the market to heat up to sacrifice their own profits, but not the downstream products of technical support, if the price is cheaper, and how many people dare to use.

In addition, the development of LED lighting technology, in addition to its resistance to heat and specifications, price and other factors, CFL energy saving lamp, fluorescent lamp technology is also in development, the luminous efficiency of office lighting system T5 lamp has reached 100 lm/W level, CFL energy-saving lamps also have 3W specifications of ultra small products come from the current LED with the energy-saving lamp price is concerned, the popularity of LED lighting still has a long way to go.

Due to the downstream packaging and application of funds and technical requirements are relatively low, currently more than 80% of the LED companies are only low-end packaging business; but the LED chip and wafer and other upstream industries due to the high technology and capital requirements, so in less business, development relative lag. As the equipment accounted for the entire LED