Global backlight market can be divided into two categories: the first category is small and medium size backlight, such as NB (laptop), monitor; the second category is a large backlight, such as flat-panel tvs.
In the field of small and medium size, LED backlight has occupied a larger advantage, in 2009 the market share of LED backlight in the NB market will be more than 50%, is expected to grow rapidly in 2010 will be more than 80%.
In the field of large-size LCD TV, on behalf of the application, although the leading TV brands such as Samsung, PHILPS, SHARP, Sony, Toshiba, Vizio and LG will be announced in the second half of this year to improve the LED backlight LCD TV usage, but is expected in 2009 can reach the market share is only about 3%, but with the main manufacturers vigorously promote, is expected to grow to 10% in 2010.
By 2012, is expected to more than 10 inches of large-size panels using LED backlight will be more than the number of the group of 368 million, will grow by more than 20 times more than in 2008.
LED backlight gradually to large size transition
Cold cathode fluorescent lamp (CCFL) is the mainstream technology of LCD application, relatively high light efficiency, mature technology, complete and perfect, but mercury containing elements on the environment pollution.
Light emitting diode (LED) has the advantages of environmental protection, wide color gamut, the disadvantage is that the current cost is still relatively high, the light effect has yet to be improved.
Large size backlight current mainstream technology and products are still CCFL. LED application in the light efficiency, cost, heat and other aspects of the promotion of obstacles.
With the gradual development of small size LED backlight market, the current LED has gradually transition from small to large size of the product, the market has been the emergence of the use of LED backlight PC and television. However, there is still a big gap between the price of LED backlight module and CCFL module, the use of LED backlight will largely improve the cost of the product, so that the market share of LED is not high.
From the development trend of LED backlight technology itself, due to the side of the light LED can be ultra-thin design, it will lead the small and medium size Backlight Market; more than 13 inches panel, it will be mainly using direct viewing LED technology.
At present, the NB market has been a large number of LED as a backlight, in the small and medium size backlight applications, LED has become the mainstream, low current products in terms of cost structure, heat dissipation and luminous efficiency and other advantages.
In 2008 about 8 billion LED were applied to the LCD panel. According to Moore's law, the development of LED industry, with high power LED technology and improve the level of production, the cost will decline rapidly, is expected to 2012 LED backlight will be more widely applied to the liquid crystal display (1 inch -70 inch), the application of the scale is expected to more than 3 times compared to 2008.
The current LED luminous efficiency is still not high, the price of the product is too high, the short term CCFL will occupy the mainstream position of large-size backlight market. But LED has the advantages of light source, wide color gamut, low power consumption, light weight, and so on, it will have a broad market space in the subsequent development of large-size backlight applications.
Vigorously promote the process of LED backlight applications
From the current domestic and foreign research and development of application technology, it can be considered that LED will be the mainstream technology of future backlight. But on the one hand, LED is applied to the large-size backlight current existence problems, the high cost of technology is not mature; on the other hand, advanced foreign enterprises and speed up the pace, in the direction of technical research therefore, if not as soon as possible between the domestic TV enterprises, backlight enterprises, LED light source enterprises interact the technology and application, and then as soon as possible to form a system of industrial chain technology itself, it will in the technology and market is far behind Japan and South Korea, even once again facing the plight of pay huge royalties.
LCD TV LED backlight technology, the application of enterprises need to solve the understanding of the development and characteristics of the LED as soon as possible problems with the current to a certain extent need to cost to promote the application of the process, but also the need to strengthen the integration of upstream, on the basis of key materials such as directional chip, package input. From the current domestic industrial structure, this work requires the government, industry associations and the advantages of the whole machine to promote and guide the enterprise. But at present, in the technical exchanges and interaction improvement and the application of sample products and other aspects of promotion, are not easy to get the whole machine manufacturers and backlight applications of active participation and cooperation.
I think that the main advantage of LED enterprises to enter the field of LCD backlight is according to the characteristics of LED backlight, launched light distribution research and production organization, LED can effectively improve the availability of light, while the cost of more in-depth control.
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