LED lighting is a hot industry analysis, market cooling phenomenon
Used to describe the Chinese in full swing
LED Lighting industry can not be too, but it is undeniable that the Chinese LED lighting is a hot industry, the market cold. Why is there such an awkward situation? This is because the current technology for the high power LED lighting
Lighting Efficient compared with existing light sources and no obvious energy saving advantages, while the initial investment costs are much higher. High current efficiency at the same time raise a lot of light transformed into heat energy, heat treatment, if not good will, in turn substantially reduce LED life, with the added cost and size of the radiator, so that the advantages of LED light source disappears. So, not everything is up to the LED lighting market demands technical angered disaster.
LED luminous efficiency is divided into internal and external quantum efficiency, internal quantum efficiency for the fundamental up to 80% or 90% while the external quantum efficiency because they failed to emit a photon, as the heat generated by absorption of lead LED junction temperature rise while reducing the internal quantum effects, this should be the overall luminous efficiency of LED lighting just to reach the general level of traditional reason. Therefore, to find a balance between science and luminous efficiency to achieve an effective way. The enhancement of LED luminous efficiency will directly reduce the cost of LED particles brought down.
At present most of the white LED application
are small tube-line below 60mW, because this packaging technology will bring serious heat problems, so only suitable for light applications. 3528 SMD LED package now occupies the main position of the lamp, but its more than 70% of the costs are the costs for aluminum, copper, shell and processing, the high cost of making chip packaging hamper the popularity of LED lighting.
Now account for 50% of the cost of LED package, in order to reduce the overall cost of LED, we must choose a more appropriate package structure, so change the existing package structure, to achieve a reasonable package cost, will be market acceptance of LED lighting The most effective and direct via. Of course, LED
Chip With the technology, the volume increased, with larger wafer production process, are continuously reduce costs in recent years, the annual rate of 20% reduction, if the current package can cost from 50% of the total cost reduction to 20% ~ 30%, LED lighting applications to a new order of magnitude at the size of the market.
LED chips currently cost about 15% of the lamp, but now really energy-efficient than traditional LED light sources are only a handful of chips. The thermal design, constant current
Power supply Design, the overall control technology, but also have wider application of LED lighting before the need to resolve technical problems. At present, thermal and reliability of LED lighting product life cycle constraints, thermal design it is necessary to LED chips and heat dissipating path as short as possible, and second, sufficient to reduce the thermal resistance heat path.
LED lighting technology into the mainstream light source should be used CoB (chiponboard) package dedicated white LED module, in accordance with the requirements CoB lamps optical package, it can also reduce the cost of the second optical design. CoB encapsulated LED modules installed in the floor a number of pieces of LED chip, using multiple pieces of chips can not only improve the brightness of LED chips also help to achieve scientific and rational allocation of a single LED chip, reducing the input current capacities to ensure efficient.
Distributed constant current technology to optimize "LED constant current driver source" total solution, continue to improve efficiency LED light module. At the same time, miniaturization
Switching Power Supply , Continue to optimize thermal design, and improving LED modules seal to improve heat dissipation. All these are LED lighting market to grow up the necessary technical conditions, bluntly stated, the power is the weakest link in LED lighting, LED lighting seriously affect the quality level, while many domestic enterprises, product quality is also really need to improve time.
For cost reduction, so that technology maturity is something the whole industry chain. LED industry chain in the upper, middle and lower reaches were epitaxial materials and chip processing, product components and modules for packaging, display and lighting applications.
LED epitaxial wafers and chips account for about 70% of the profits of the industry, LED packaging accounts for about 10% ~ 20%, LED application about 10% to 20%.
I am an expert from China Hardware Suppliers, usually analyzes all kind of industries situation, such as scoter , 4 stroke motor scooter.
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