The other high definition resolutions in use are 720p and 1080i. These are the resolutions most frequently used in larger screen televisions to create better-detailed pictures.
This information applies to televisions from a variety of manufacturers including, but not limited to, those made by LG, Samsung, Panasonic, Sony, and Vizio.
What makes 4K resolution significant is that with the use of ever-larger TV screen sizes as well as video projectors, it provides much more detailed and less pixel visible images than 1080p. 1080p looks great up to about 65-inches, and can still look good in larger screen sizes, but 4K can deliver an even better-looking image as screen sizes continue to increase.