White LED technology based on a combination of a blue LED and phosphor, is now being viewed as a new solution for LED-based TVs, according to Biing-Jye Lee, the chairman of Taiwan LED specialist Epistar.
Although the color saturation for a blue LED plus phosphor has an NTSC color saturation level of only 90%, Lee thinks that the technology is one way to boost LED backlighting penetration in the LCD TV market. Compared to RGB LED technology, which requires a larger number of LEDs, production cost of the new technology is much lower, Lee added.
Samsung Electronics recently launched a 40-inch LED TV panel with mass production set to take place in the second half of 2008. The panel uses blue LED and phosphor to create white LED lighting, according to sources.
Arima Optoelectronics president PJ Wang, however, indicated that the production cost for an RGB LED does not necessary mean high production costs. As adjusting the phosphor for the correct color combination in a blue LED-phosphor device is not easy, this may affect the production yield rate. In addition, RGB LEDs deliver better NTSC color saturation, added Wang.
In five years, LED technology will become the mainstream in the LCD TV market, Lee estimated.