LED lighting will be a massive growth market in the future

With the existing incandescent lamp, fluorescent lamp, energy-saving lamp, halogen lamp and high pressure sodium lamp, LED light source has the advantages of obvious, 6 include: long service life (life of up to 50 thousand to 100 thousand hours, 10 times longer than traditional light source life above), energy saving (the same lighting effect than traditional energy-saving light source 80% above), the application is simple and convenient, low cost, and strong environmental protection (waste Recyclable, no radiation, no mercury), which makes it become a very attractive option in pay attention to energy saving and environmental protection under the current economic situation.

U.S. Department of energy pointed out: Lighting consumes 22% of the annual energy consumption in the United states. The widespread use of LED lighting will reduce the energy consumption by 50%. If this is taken into account objectively, by 2027, the annual reduction in energy consumption of LED lighting will be equivalent to 500 million barrels of oil, while also reducing the amount of carbon dioxide emissions.

Personally believe that, in the long run, LED lighting will certainly dominate the world. In fact, the current LED lighting has been in the recent home lighting market has been rapid development. According to OSRAM optical semiconductor company in 2008 survey, the global annual household lighting seat shipments have reached about 50 billion.

Some industry experts believe that the massive market LED green lighting and sustained and stable growth in demand will set off the integrated circuit industry following the VCD, DVD, mobile phones, MP3 after the consumer electronics market and another super tsunami! Market research firm iSuppli also predicted that the LED lighting market will grow from $7 billion in 2009 to $9 billion in 2011, of which the ultra high brightness LED lighting market is the fastest growing market segments. This indicates that in the next few years, large screen LCDHDTV backlight lighting, road lighting, road lighting, and construction site lighting market will be rapid development.

LED light source technology matures, the rapid growth of lumens per watt light, high light output power of LED has been achieved with an important milepost significance of 100 lumens / watt light output, some manufacturers even claimed that its LED reached 120 LM / W. This means that, in terms of energy efficiency, LED is now beyond the energy-saving lamp CFL (its light output is 80 lumens / watt). According to experts predict that by 2012, LED light output will reach 150 lumens / watt.

At present, the price of LED is a major obstacle to its entry into the mass consumer market, but the cost of LED has recently declined very quickly. 1WLED light source, for example, the price of the spring of 2008 was 1/3 in the spring of 2006, in the spring of 2009 has dropped to 1/4 in 2006. Polybrite (a leading supplier of LED lighting products) also said that in the past 12 months, the price of individual white light LED has dropped from $1.50 to $8. And in 2009, the price of incandescent bulbs replaced by LED will be accepted by consumers.

What they say is not true. According to my understanding, the past LED the main reason for the high price is the manufacturing patent largely under the control of Japanese manufacturers hands, and they are not willing to authorize these foreign patents, leading supplier of LED has only a handful of. However, these patents expire this year, once the failure, I believe that the Chinese mainland and Taiwan will soon be a number of LED manufacturers, and further quickly pulled down the price of LED.

From the application point of view, LED lighting applications less than 25W will gradually penetrate into the portable handheld products (such as PMP and MID), reading lamp, dining lamp, bedside lamp, lights, decorative lights, logo lamp, grille, taillights, automobile lamp, auto lamp, and automotive infotainment display.

25W-100W LED lighting applications can be found in automotive headlamps, office lighting and architectural lighting purposes. 100W lighting applications above LED will be widely used in large screen LCD-TV, highways, large squares, TV walls and industrial lighting.

It must be noted that the design of LED lighting products must make the drive IC work at full load output of the best working area of 70-90%. The use of full load output current drive IC due to poor lighting in the narrow space, and easily lead to LED lighting fatigue and early failure.

In addition to the thermal management challenges, system designers will design three major challenges encountered is how to maintain the overall power conversion efficiency above 80%, flicker free dimming and prevent LED color.