While all 4K TVs have an Ultra HD resolution of 3,840 x 2,160 pixels, different models ... We also use a series of demo scenes and real-world content to evaluate each 4K TV's overall picture ...
A 4K screen has a resolution of 3840 x 2160 pixels, which is also sometimes called Ultra High Definition (UHD). This is four times as many pixels as Full HD, which has a resolution of 1920 x 1080 ...