LED backlighting for LCD HDTV

Light-emitting diodes (LEDs) are used today for backlighting of small displays such as PDAs and mobile phones. We show in this paper that a new LED technology can be used for high-demanding display-backlighting applications such as LCD HDTV. Using this new type of emitter, called a Luxeon Power Light Source, a brightness higher than an edge-lit CCFL backlight can be achieved, while compared to a direct-lit CCFL backlight the thickness is lower and the uniformity is better. With on-going improvements in LED performance over the coming years, LED backlights will reach and even outperform the brightness performance of direct-lit backlights while maintaining the benefits of edge-lit solutions at even higher brightness levels.