A 4K display can often refer to a display with one of two high-definition resolutions. The most common 4K display has 3840 x 2160 pixels (refers to a display that is about 4000 pixels wide), and the number of pixels in rows and columns is exactly twice that of 1080p (1920 x 1080 pixels), which is four times the total number of pixels. , With the same 16:9 aspect ratio. A 4K display can also refer to a display with a resolution of 4096 x 2160 pixels that is not very common currently.