India still a flicker

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INFOCUS | INDIA-CHINA | TECHNOLOGY

The latest range of ultra bright LEDs consume 11 per cent of the electrical power that an incandescent bulb does for same light output in Lumen. That means today’s 11W LED light will ideally give same light output in Lumen as 100W conventional filament bulb. Thus LED will reduce global power demand by 50 per cent if they replace all conventional lights used in the world. This will eliminate the need to turn to dangerous and expensive nuclear energy and enrich western multinationals like those in France or USA.

China lights up with lED

India still a flicker in the dark |16| India-China Chronicle  July 2012

In the next 10 years one might see LED prices as low as or cheaper than conventional light sources. PS Deodhar

L

ED or light-emitting diode turns electrical energy into luminous energy and emit visible light in various colours, such as yellow, green, blue, etc, as well as invisible light, such as infrared and ultraviolet. Compared with the small incandescent bulb and the CFL lamp, light-emitting diodes are specially characterized with low operating voltage and electric current, high reliability and long performance.

Global Industry Status While the Indian government is busy with non-issues, globally the LED industry is rapidly growing. The entry barriers of the light-emitting diode industry from the upstream to the downstream are getting cut down gradually. The upstream industry includes monocrystalline chip and the epitaxial wafer while the middle stream industry is mainly engaged in chip processing and the downstream industry handles packaging, testing and application. The upstream and middle stream industries, most competitive and risky fields on world market, have higher technical contents and require more investments. In the industrial chain of light-emitting diode, epitaxial wafer and chip account for about 70% of profits and the packaging accounts for 10 to 20 percent of profits, with 10 to 20 percent held by application field. Future of LED Under international energy crisis and the gradual improvement of the environmental protection requirements, the semi-conductor lightemitting diode lighting, with long performance, energy saving, safe, green and environmental protection, abundant colours and microminiaturization, has been recognized as the only one and the most important way of energy saving and environmental protection in the world. As said earlier, the semiconductor lights, adopting light-emitting diode as the new lighting source, only run up one tenth of the electricity compared with the ordinary white light lamps and the performance can be postponed 10 folds at the same

brightness. In 2007, the total amount of the global light-emitting diode market exceeded 6 billion USD, up by 13.7 per cent over the previous year. During 2006 to 2009, the annual compound growth rate of the global light-emitting diode market is 10 per cent, most of which will mainly be contributed by the ultra high and high brightness light-emitting diodes. This has grown significantly as prices are falling in 2011; thanks to China. LED light sources are most reliable since just a single chip converts electrical energy into light energy. If its conversion efficiency is the highest,

LED Light sourcEs arE most rELiabLE sincE just a singLE chip convErts ELEctricaL EnErgy into Light EnErgy. if its convErsion EfficiEncy is thE highEst, thE hEat Loss is smaLL anD is wELL managED to protEct thE chip. thE LifE of LED thErEforE is unLimitED anD usuaLLy cLaimED to bE 50,000 hours the heat loss is small and is well managed to protect the chip. The life of LED therefore is unlimited and usually claimed to be 50,000 hours. Against this, Compact Fluorescent Lamps or CFLs, have as many as 40 or more parts and therefore rarely meet its claimed life of 5000 hours. Cheap CFLs from China is indeed a waste of money. Global LED Industry The global light-emitting diode industry is mainly concentrated in Japan, Taiwan, Europe, America, South Korea, China, etc. Japan, the largest producer of the light-emitting diode industry in the world, holds 50 per July 2012  India-China Chronicle |17|


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