2012 LED prices will continue to decline

In order to further reduce the cost of LED, the industry has some suppliers trying to use cheaper silicon and metal material as the substrate material and development of high power LED, but this practice in the early 2011's was a good topic, but in the third and fourth quarter of last year, with the LED capacity requirement and sapphire substrate manufacturing the expansion of production capacity, the end of last year the price of sapphire compared with the beginning of last year has been reduced by more than half. For example, the price of sapphire at the beginning of last year, but also $more than and 30, but by the end of the year the lowest price of about $7. When the price of sapphire has dropped below $10, the advantage of using other materials as substrate is not obvious. The development of the technology of silicon substrate is very early, but it has not been developed, mainly because of the following important problems: first, the defects of silicon is more, its luminous efficiency is poor. The two is the use of silicon epitaxial growth, because the silicon itself will absorb light, so we must take off the silicon, with other substrates (whether it is metal or other substrate) to do the light source carrier. There must be a substrate conversion, the process itself is not so easy. Also, when you add a process to replace the silicon substrate with other substrates, the benefits of using silicon basically are gone. The use of sapphire substrate do not need another substrate, the manufacturing process is simple, with the continuous decline in the cost of sapphire, silicon low cost advantage will become less obvious. From the point of view of the cost of LED, the cost of using silicon carbide as substrate is much higher than that of sapphire substrate, but the quality of the silicon substrate is better than the other. Two kinds of silicon carbide materials opaque and transparent, such as silicon carbide materials transparent substrate cost is higher, and the opaque silicon carbide with silicon materials, conversion extension must be the substrate, the substrate conversion process involves another process, there are certain yield the problem. So it is mainly based on sapphire material, the technology has been developed for a long time is also very mature. Now do a lot of energy-saving lamps manufacturers are doing LED lamps, but to see the LED lamp price from $30 down to $10, a lot of cost to be compressed, so now the concern is "every dollar can get the number of lumens". With 800 lumens of light bulbs, in 2011 after the package is $1 on average about 200 lumens (the average industry is about 160-180 lumens), can do the best 250 lumens, 2012 year plan to do 300, 400 lumens, LED bulb price will also fall. As for when the LED bulb can really get up, next year should be a special time point. Many predictions are expressed in 2013 or 2014, LED lighting will increase sharply up, but there are also people who say to wait until 2015. But according to recent observations, due to supply and demand is not stable, decrease backlight demand, as well as the European market is not stable, LED reduction speed and relatively fast, expect these factors will stimulate the LED lighting market to amount. The price of the first energy-saving bulb was about $20-30, and now it has dropped to $2-3. Now the LED lighting bulb may also go the same way, and now the price of LED energy-saving light bulb has dropped from the initial $50 to less than $20 now. Expected in the third quarter of 2012 or the end of the year, the end of the year will be able to see the amount of LED lighting market in early 2013. High pressure LED is the latest attempt to help the industry to solve the problem of heat dissipation and light efficiency, the current development of the lighting market for about 50V and around two kinds of high pressure 1W 70V LED. This allows customers to easily meet the requirements of 220V or 110V power market through different combinations of permutations and combinations. According to the views of experts and experts in the design of chip design control circuit, set the two voltage range of LED, and make the city electricity is most likely to match, which is currently the main push, is also the first to mention, many manufacturers in the following. The advantage of using high voltage LED is to reduce the loss of pressure drop, while effectively reducing the drive current, the circuit can be used in a more fine copper wire. High pressure LED has been mass production for more than a year, a lot of high pressure LED light effect, a single brightness can reach 120lm/W, low pressure LED is generally around 100lm/W. Depending on the light efficiency or total output lumen, the customer can flexibly select. 1W to do with the LED platform to design. Compared with the low pressure LED, high pressure LED thermal energy will be evenly distributed on the chip, the thermal energy of low pressure LED will be gathered in a certain range, even though the heat is very good, but also because of the region continued to heat and cracking. The high pressure LED can pass the heat evenly through the whole chip, so the stability is better. High voltage LED will be one of the main trends in space constrained applications, such as bulb and projector. In the traditional use of high power, such as the dance lamp and wall lamp, because of space limitations, can control some voltage control circuit, when using high pressure or low pressure LED, the difference is not too large. However, as the ball bubble lamp is not so good to control the layout of the small space, high voltage LED chip is a good solution. Currently involved in a lot of market, a few years ago, the main backlight display, but the recent concern is the lighting market, because this is a new application and worthy of our expectations of the field. From the amount of substitution and acceptance of the point of view, the main market is the bulb and the lamp tube, one is concentrated in a very small bulb, and the other is spread to the whole lamp. These two applications and designs are not the same, but complement each other. At present, the cost of high pressure LED is higher than the low pressure LED, but with the use of high pressure LED products and the expansion of production scale,