Challenge next generation light source LED potential

Since 2002, the rapid growth of the global economy is driving the lighting market, ITRI IEK industry analyst Huang Mengjiao said, "in 2007, including lighting, light source, components, the global lighting market size of up to $91 billion 250 million per person per year, the average global lighting costs $14; it is expected that in 2015, the global lighting market size will reach 137 billion 235 million dollars, but due to high energy efficiency and environmental protection requirements, the price fell by an average of 20% LED in the lighting market forces are constantly amplified. "

The lighting market and the global economy in the same proportion, "Huang Mengjiao pointed out that lighting is the basic human needs, but today the majority of poor lighting technology efficiency and the cost is huge," with the population and economic growth, lighting will be swallowed up the energy monster. "

According to the International Energy Agency (IEA) statistics, in 2005 the global lighting energy is 2651TWh, the total cost of $365 billion, accounting for about 1.2% of global GDP; about 19 tons produced carbon dioxide emissions, equivalent to 70% of the world light vehicle emissions, but when the annual lighting system efficiency is only 50lm/W.

These statistics show that the current inefficient lighting technology, resulting in excessive consumption of energy. Huang Mengjiao pointed out that, usually, the luminous efficiency of domestic incandescent lamp is 8lm/W, up to 15lm/W of the product is usually considered super high brightness. But the luminous efficiency of white LED theory has reached 300lm/W, this year, Nichia has even demonstrated the 249lm/W white LED. These indicators of technical progress, further promote the possibility of LED lighting penetration into general applications.

She pointed out that 1998~2002, LED lighting is mainly used light or flashlight, then gradually expand special lighting applications, such as architectural lighting, advertising lamp etc.. In 2008, LED officially began to replace the incandescent lamp, and the estimated since 2010, LED will also enter the family, provide different functions in different forms such as lighting, with a direct replacement for LED fluorescent lamp efficiency, is expected to invest in the field is the largest manufacturers.

However, LED still has some inherent problems to be overcome, such as glare and point source characteristics leading to uneven brightness. This relatively derived the demand for new materials, especially in the diffusion film, will be the focus of development.

According to the statistics of Strategies Unlimited and IEK, the market size of LED components with lighting, which is not included in the lighting industry, was less than $400 million in 2007, but it is estimated that it will grow to nearly $1 billion 800 million in 2012. In order to meet the lighting market opportunities, future LED products still need to strengthen the control of light and light intensity, and to reduce the volume of the control system, in order to ceiling lights or special locations when applied, can try to eliminate installation obstacles.

As for the next generation of efficient light source technology - OLED, Huang Mengjiao pointed out that due to the technology and cost, OLED rapid access to consumer applications is not high. In 2012, if the technology is mature, OLED is expected to replace the small part of the plane light source, however, due to the price of LED, and would not be under threat, the most likely phenomenon, LED is used to replace the poor quality of the application in some special applications.