It is the smallest addressable element in a picture represented on a screen or paper. It refers to “pixels,” which are the building blocks of electronic displays. To understand display resolutions, the first thing you need to know is what “p” stands for in 720p or 1080p. What Does '+' Stand For in 720p HD+, 1080p FHD+ or 4K UHD+?ġ080p vs 4K vs 8K: Availability and Content