ETP made in 2008, global carbon emissions by 2050 from 62 billion tons down to 14 billion tons (BLUEMapscenario), to reduce the 48 billion tons of the key technologies to improve energy efficiency the most important client, expected to account for 47% followed by the supply of renewable energy, accounting for 21%. LED lighting is the way from the use of end power, in line with trends in low-carbon economy.
LED efficiency trends? Efficiency of various light emitting point of view, incandescent and halogen only 20 ~ 30lm / W, energy saving light bulbs at about 70lm / W, HID can be increased to 100lm / W, lamp luminous efficiency of micro to nearly 120lm / W, But in 2010, were only about 80lm / W and less than 30lm / W for LED and OLED, they are nothing but show rapid improvement of the situation, the next few years is expected to reach a variety of traditional lamps, LED laboratory data are to 200lm / W forward .
2000 Fiber to the Home (FTTH) Hande crews are busy creating optical communication industry much good, but then rapidly developed into a replacement wireless communication products, but also the optical communication industry, the rapid decline. LED is also expected to play today, then the role of the wireless communication industry has become a new generation of lighting choices.
Incandescent bulbs to the energy released as infra-red as the most, so keep the heating temperature, in fact, the lighting is not ideal. Currently 20 ~ 40W lamps, LED replacement trend has matured, 60W heat dissipation problem is still unsolved. In addition, LED's glare problem to be improved.
As for the life, in fact, not necessarily too long, too long if it can not change 10 years, industry is also equal to the end. Luminous efficiency lm / W in fact the consumer does not make sense, lm / $ is the point, really want to guide the 800 ~ 1,000 lm / $ will be the basic goal. In addition, the current design of multiple point light sources and conventional light sources, designed to bring light into a concentrated light source, there is light if the light in all directions, light quality, including color rendering, color temperature, lumen, light type must be identical or close to traditional light sources. Practical perspective, to save money due to effects of power must be brought to show at 1.5 years. These are technical issues to overcome.
GE recently announced the closure of the United States last one incandescent light bulb factory, is echoing the United States announced in 2007 to phase out by 2014 all the incandescent bulbs, also show low energy efficiency of incandescent bulbs. In addition, Philips also pointed out that LED lighting industry will be the main driving force, and is expected to total turnover of the penetration rate to 2015 to more than 50%. Go fastest Japan reached 50%.
Development Trend of LED lighting commercialization
Despite the clear trend of LED lighting, but now do only a single LED is difficult to live according to clear, mainly standards are not settled, the technology is not mature enough. Moreover, LED's optoelectronics industry and the lighting industry this is two different areas, also need to meet together and seeking more cooperation. Like the lighting industry is often the family business from generation to generation, a high degree of self-made, LocalKing ecological obvious, the new LED light source currently much more expensive than the sidelines, or invest some resources to test the water temperature and high profits. The LED lights are still in the Warring States period, and the lamp lumen output and light quality requirements there is still much room for improvement, access is not mature into the industry are still far from making a profit.
LED's popularity and prices have an absolute correlation, the current retail price of LED bulbs 20 dollars, incandescent 1.5 U.S. dollars, 15 dollars the expected price drop to a penetration rate of up to 4%, to $ 7.5 up to 10%, $ 3.75 , which is 2.5 times the incandescent, permeability up to 25%.
Epistar commitment to LED application possibilities, the past is the first and Samsung, will use the phone's LED manufacturers is also used in notebook computers up to 50% market share, used in television is not high self-sufficiency rate in South Korea when up to 50%, now also invested more than lighting applications.
Why LED Lighting price too high? The cost structure of LED lighting can be a more clear direction, the relative cost to heat and the highest proportion of metallic bond, followed by drivers, addition to the cost of LED sub-Bin. LED grain prices are too high the outside world that is the cause, in fact, very small proportion of long-grain, and even higher prices than it is now even smaller phosphor.
LED U.S. Energy Department set clear goals, including the luminous efficiency, the price, including details such as phosphor conversion projects. The current efficiency of 80% cold, but the market is again a huge warm phase out 20%, 60%, so to seek a breakthrough by many of the technical development.
Spreadsheet to 800lm bulb, 2010 light-emitting efficiency of 100lm / W, according to the optical efficiency of 0.5 (0.5 for the other heat), 80% drive efficiency, optical efficiency of 80%, DeltaT106.3 calculation, the input power of 12.5W, a year-by-Zoe current status of items to improve the efficiency of computation, 2015 luminous efficiency 150lm / W, the optical efficiency of 0.75 (0.25 for the other heat), the input power is 6.6W, the heat produced is less than 2W (6.6x25%), so now the heat is very important in the future is simply not a problem.
Another problem is the use of LED lamps, to allow consumers like as long as on or off, so ACLED technology development is very important. However, the bridge rectifier ACLED more expensive, so from the single-chip integrated into a single chip, an external pull-out bridge rectifier diodes, a high voltage (HV) LED, the chip for high-voltage, low current (no transformer), because does not have built-in bridge rectifier, can increase the emitting area, AC, DC are applicable, the provincial power and save costs, but also to existing dimming (Dimming) circuit.
Blu-ray crystal electric and original HVLED, as InGaNLED, 20% brightness upgrade, as well as red HVLED, as AlGaInPLED, can be nearly 30% of the original gap between the warm light and cold reduced to close to this year's R & D target of 130lm / W, 2012 150lm / W or more, then cooling to inaction is no longer a problem.
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