In 2008, the global LED market capacity will be about 5 billion US dollars. By 2013, the global LED market capacity will reach about 17.9 billion US dollars, with a compound annual growth rate of 24%. From the application field, the annual compound growth rate of the lighting field is 40.3%, the car is 6.9%, the LCD backlight (large size) is 117.4%, and the display product is 2.2%. It can be seen that the fastest growing is the lighting product in addition to the large size backlight. In 2004, landscape lighting and general lighting accounted for 5% of the total LED application. By 2008, this proportion had risen to 15%.
The field of LED lighting applications is expanding. In 2002, LED white light has a luminous efficiency of 25 lm/W, which is generally used in automobile dashboards. In 2004, the light efficiency was 40lm/W, and the application was extended to mobile phone backlights and flashlights. By 2006, the luminous efficiency of LED white light reached 60lm/W. At this time, automotive interior (toplight) lighting and outdoor landscape lighting applications appeared. By 2008, the LED light efficiency reached 80lm/W. At this time, the application of the car's headlights, semiconductor lighting, large-size LCD backlights and other applications gradually emerged. By 2010, LED luminous efficiency will reach 100lm/W, and it will gradually enter the era of semiconductor lighting. A series of applications such as outdoor lighting, indoor lighting, environmental lighting and special lighting will gradually emerge. The improvement of luminous efficiency has led to the development of LED applications.
As countries pay more and more attention to environmental issues, LED lighting is also receiving more and more attention. Let’s take a look at national environmental policies and green lighting plans. China has “semiconductor lighting projectsâ€. The United States has “next-generation lighting plans†to increase LED light efficiency to 200 lm/W by 2020; Europe’s green lighting plan is called “ The Rainbow Project "Korea's plan is called the "GaN Semiconductor Development Program." From the development goals of LED lighting technology, there are two important points in time, one is 2012 and the other is 2020. In 2012, the LED light efficiency will reach 150lm/W, and the life expectancy will increase from 20,000 hours to 100,000 hours, which can replace fluorescent lamps. By 2020, the light efficiency will reach 200lm/W, which can replace all current lighting products.
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