LED snatch LCD backlight market costs and technology is still constrained

According to the prediction of DisplayBank, to the LED backlight module of large size TFT market in 2010 global LCD panel, shipments will reach 67 million 800 thousand, the proportion of total LED backlight module market is expected to reach 14.1%. although compared with CCFL backlight manufacturers generally use the LED, there are high cost, high power consumption and heat dissipation problems such as slow, but the application of this technology has been the major manufacturers and panel enterprises. Last year, including Konka, Hisense, TCL and other companies have launched a prototype, but only SONY, Samsung to market a small amount of 70 inches LED LCD TV backlight products.

Application prospects

Reporters learned that, LED backlight is the trend of industrial upgrading, with three obvious advantages of technology. First, it shows the colors richer, wider color range, color number can be more than the traditional CCFL (cold cathode fluorescent tube backlight) more than doubled; second, with the brightness of the screen can take the initiative to adjust the LED backlight brightness, saving more than 30%; third, toxic and harmful substances LED backlight without lead and mercury, is the real green light. According to experts predict that by 2010 LCD TV will begin a comprehensive application of LED backlight, which will be a major opportunity for industrial upgrading.

For the environmental protection back light source, generally optimistic about the future market demand, according to Displaybank forecasts that by 2010, LED backlighting in large size market share of more than 10%. in the total market demand in the next 5 years will reach more than 20 million units, sales of about $5 billion, profit $1 billion.

In the large screen LCD TV, LED backlight can account for about 40% of the screen costs. Deputy director of the Hisense Research Center Dr. Liu Weidong believes that the current flat-panel TV module Chinese almost 100% dependent on imports, serious development direction and heteronomy, LED backlight technology represents LCD backlight technology, China brand only made a major breakthrough in the forefront of the core technology, in order to completely get rid of the passive situation.

Cost and technology remain constrained

Some experts believe that LED is applied to large size LCD backlight, the technical aspects of brightness, heat, light, and other issues of uniform distribution. General LED backlight source 5 times more expensive than the traditional CCFL.

Some analysts believe that the use of LED backlight TV development trend is to a higher color rendering and color reduction degree of development, and reduce fever, improve stability. For large size LED backlight TV, a good cooling system must be designed to ensure that the LED backlight is working properly. At present, the technical and cost issues, the major manufacturers have not found an effective way, according to the expected, from the beginning of the third quarter of this year, LED backlight LCD TV will be listed, but began to replace the CCFL backlight TV until at least 2009.

Source: People's daily Tianjin window