The document discusses the differences between LCD TVs and LED TVs. It explains that both use LCD technology and flat panel designs, but that LED TVs are slimmer, brighter, and more detailed because they use LED backlighting rather than CCFL backlighting found in traditional LCD TVs. LED TVs can be edge-lit, with LEDs on the sides, or full-array lit with LEDs evenly distributed behind the screen, resulting in better light uniformity. While LED TVs offer energy efficiency and thinness benefits over LCD TVs, the document notes that the only real difference is the backlight technology, as both display images using LCD pixels.