Blue LED with red, green fluorescent powder will become the mainstream trend

Such trend driven, application of LED notebook computer (NB) backlight products stable in 2008, the next wave of opportunities will focus on the application of LED backlight TV backlight, LED industry, R, G, B as the 3 color LED light mixing is still facing the high cost of the plight of the blue LED and yellow color fluorescent powder since 2009, the blue LED collocation red and green phosphors will become the mainstream trend.

Guang Baoyu on 2008 before the Taipei photoelectric exhibition will LED backlight TV display as the key, back light effect were compared with the blue LED yellow phosphor and blue LED with red and green phosphors, driving in the 60mA environment, a single LED can play 13, 10 lumens, and the launch of the latest using local dimming technology, the television to achieve more power, strong contrast color, good effect, on the current LED application revealed that TV backlight has started a small amount of production, 2009 will be officially launched the application.

In addition to good Lite high color backlight technology, LED packaging factory Everlight also uses small size polycrystalline LED package as back light source, the blue LED with red and green fluorescent powder technology applied in TV, and the fluorescence powder has been made in Japan, Taiwan, and other regions of the mainland Chinese patent.

LED industry said that South Korea's Samsung Electronics (Samsung ELectronics) was launched in September 2006 40 inch R, G, B 3 color LED backlight LCD TV, the regional control technology, but the price is too high, it is about NT $100 thousand, so in September 2007, Samsung once again launched a 40~57 inch direct white LED LCD TV backlight, although the luminous efficiency can reach 90~100 lm/W, but the color performance of R, G and B as mixed light level.

In order to strengthen the LED color performance advantages, LED industry pointed out that the current LED backlight TV application can be divided into 2 large blocks of high order TV products, products emphasize high color saturation, R, G and B toward the 3 color light mixing process, by contrast the brightness, color, mainly used in 40 inches. More than TV products, TV products for the mainstream size tradeoff between price and performance in color, with red and green phosphors blue LED as backlight.

The blue LED grains with red, green fluorescent powder process was 90% NTSC, its color is better than the performance of the blue LED and yellow fluorescent powder, and the side light type (side view) technology, to make the backlight module light volume and cost competitiveness, luminous efficiency of 85 lm/W, is expected to become the mainstream technology of 30~46 backlight application. The size of the tv.

Source: DIGITIMES