Sony's new XBR8 series uses LED backlighting with local dimming. Shown here was a demo setup in which you can see a single cluster (of the many--number not specified which will be positioned behind the panel) of red, green, and blue backlights. The interesting feature here is the presence of two green LEDs. That's not so puzzling when you realize that in our HD color TV system the luminance signal is encoded with more green information than red and blue put together.