what is 4k tv mean?
4K, UHD, and Ultra HD (Fun fact: There is another standard used exclusively in movie theaters — known as DCI 4K — which boosts the horizontal pixel line count from 3840 pixels to 4096 pixels.) The standard resolution of 4K TVs is 3840 x 2160 pixels, four times the pixel count of your now-aging 1080p HDTV.