HD, 1080p and UHD are all the resolutions of an image to be displayed. The number of pixels in an image define the resolution. Therefore higher the better. But it is better for you to stay informed about the technology available. HD also referred to as High Definition or uses 720 rows of pixels to reproduce the image you see. The 1080p often referred to as full HD. So, this formate uses twice more the number of pixels. This format is the standard format used in the media industry nowadays. And lastly, the UHD (Ultra High Definition) also known as 4K. Where it produces 4 times more the number of pixels in 1080p. Which is becoming much more popular among the industry.