Shopping for a 4K TV is like trying to find a single wave in the ocean. Most TVs are indistinguishable from each other at a glance—unless your eyes happen to lock onto an OLED. When you look at an OLED TV, you tend to keep looking. You may not even know why at first, but it looks better. Even next to the best LCD TVs, an OLED, with its vivid colors and inky blacks will entrance you. It's simple actually: OLED TVs don't need a backlight.