At CES 2013, Samsung's only such TV announced was the insanely-expensive Ultra HD showpiece UN85S9, while Vizio once again went with edge-lighting for its flagship. are Samsung and Vizio, and neither has sold a full-array local-dimming LED TV for the last couple years. The two biggest-selling TV makers in the U.S. It "the best, and maybe the last, local-dimming LED TV to bear the Sony name." The only other local-dimming LED LCD was the Sony HX950, which was excellent, and is still current. The LG LM9600 wasn't great last year, and LG has yet to announce any full-array local-dimming TVs for 2013. The Elite by Sharp looks amazing, but came out in 2011 and hasn't been updated (with no rumors of a replacement on the horizon). By only lighting the areas of the screen that need it, the contrast ratio skyrockets. Here you can see an actual image of what a full-array local-dimming LED looks like, when the LCD portion isn't creating an image. The full local-dimming aspect means the TV is able to dim zones behind the dark areas of the screen in fairly specific areas to make the image really pop, drastically increasing the apparent contrast ratio. Like the "direct-lit" TVs, these have their LEDs behind the screen (the image above for direct-lit works as a visual aid for this type as well). This is the ultimate LED LCD, offering performance that rivals the better plasmas. Uniformity is generally better than edge-lit displays, but because there's no local dimming at all, the native contrast ratio is limited to the LCD panel itself (which is typically much lower than the native contrast of a plasma TV). The least expensive LED LCDs use this method, as do most of Sharp's ultra-massive LED LCDs. They work instead as a uniform backlight, like most CCFL LCDs. The LEDs are arrayed on the back of the TV, facing you, but there is no processing to dim them individually. Nearly all "backlit" LED LCDs use this method. If this were a real image of a direct-lit LED LCD, there would be far fewer individual LEDs.
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