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Denotes whether the model is a UHD TV with 4K (3840x2160) resolution, or 8K (7680x4320), or an HDTV with 1920x1080, or less common 1366x768 resolution. The Sharp Aquos LC-70UD1U is an Ultra HD ...

LCD televisions have traditionally used fluorescent tubes to provide the screen backlighting, but this doesn’t easily create a uniformly lit display, and it’s impossible to vary brightness so that ...