Large size LED backlight panel contains a few happy tears

2009 LED industry booming, swept the financial crisis in 2008 to bring the haze of the industry, LED backlight LCD TV is a good situation. At present, most of the LED used for flat panel backlight is more than 25 inches, large size LED panel backlight is considered a new trend in the development of flat-panel TV industry. LED TV advantage is not limited to the ultra-thin thickness, fashion design, LED excellent quality is the real reason for what is known as the next generation of tv. On June 2009, Chinese Electronics Standardization Institute, Chinese Electronic Chamber of Commerce jointly issued the "LED TV key performance indicators diagnostic test results show that the LED TV in color gamut coverage rate, power consumption, dynamic contrast and brightness uniformity of several key indicators than the average level of traditional LCD TV products have greatly improved.

The prospects for growth expected value increase

Foreign research institutions Morgan Stanley Securities pointed out that the market is expected from 2009 to 2011, the annual growth rate of global LED TV, will reach 85%. With the decline in product prices, manufacturers increased shipments, growth will be higher than expected. Japanese and Korean manufacturers Samsung, SHARP, SONY, Toshiba and LG at the beginning of the year has launched LED TV, actively involved in the Taiwan panel industry giant LGD, AUO, CMO, LED drives TV towards parity and size centralization trend. In the domestic market, the first launch of LED TV has Hisense, TCL, SKYWORTH and other mainstream manufacturers, at this stage have also released new LED. Flat panel TV industry launched the LED backlight offensive for Chinese flat panel display technology upgrades from the ordinary CCFL to the era of LED will also bring a significant role in promoting. However, the LED industry can be described as "a few happy tears".

Domestic production capacity complementary positive layout began

With the slowdown in the growth of white light LED mobile phone market, small white LED panel prices, profit margins and other factors. LED backlight in the future is bound to move toward larger size flat panel display market. The development of white LED backlight products, due to the white light LED backlight has the advantages of light and electricity, will be the entry point for LED and its related manufacturers to enter the large flat panel display market. The future backlight with white light LED prices, will be more manufacturers to invest in the LED backlight market, the price decline is more severe, is expected to shorten the distance with the cost of CCFL.

LED TV hot drive directly upstream chip shipments of the LED industry, resulting in insufficient capacity issues can not be ignored. May have a broad impact on the future of LED TV popularity. Foreign manufacturers have paid attention to this problem, according to foreign media reports, according to Taiwan, a large LED crystal power, wide gallium, canyuan and Korean manufacturers have heard rumors of cooperation, especially with the previous Samsung crystal electric supply relationship. On the middle reaches of LED packaging industry, the domestic LED packaging factory in LCD backlight applications and the potential for huge shipments of lighting applications, in the future development prospects. On the driving IC suppliers, spotlights, filters and other accessories manufacturers are rising, a lot of benefits.

Complementary domestic enterprises have been actively layout has begun, BOE has been in front of the development of 32 inches panel, continue to improve the production capacity of the 32 inch LED backlight R & D. In addition, the BOE has launched a 47 inch LED backlight development, the first sample will be completed in the second half of this year. BOE has been working with TCL and other manufacturers to develop LED backlight. Hisense is the beginning of 2008 LED backlight R & D, and access to the National 863 Program support.

Core technology research and development road

In general, flat TV specifications has been composed of panel factory led integration mechanism of the development of large size LED backlight is subject to the first panel factory, the panel factory for the industrial chain integration layout, to grasp the core technology is the key to reducing the costs of.

At present, the main technical problems are heat dissipation and color mixing. Heat dissipation is a problem to be solved, especially the large size TV, the increase in the cost of heat dissipation caused by the high price is an important issue to be faced. As for the mixed color is a more difficult technical barriers, we must do a good job of optics. LED backlight board design, generally do not want to use too many stars, but if the use of fewer light sources, the brightness will be uneven, which is itself a contradiction, then it is necessary to use optical technology to mix.

The efficiency of LED combining light to the light guide plate is higher than that of CCFL

LED backlight life longer than CCFL

For domestic manufacturers including Taiwan manufacturers, the market subject of patent licensing and the luminous efficiency of LED products is facing the current white LED backlight in addition to the high price, how to buy LED products in consumer products, good reliability of the LED backlight, is the best way to domestic manufacturers to expand the market.