1, The full form of QFHD is Quad Full High Definition

QFHD stands for Quad Full High Definition and it’s exactly four times the resolution of 1080p. QFHD or Quad HD measures 3840 x 2160 pixels, and it’s a digital television format with the same widescreen 16:9 aspect ratio you are used to watching at home. QFHD is literally like combining four (two-by-two) 1080p TVs together.

This is actually the resolution that will soon be landing on TVs and computer monitors in the coming months, like the recently announced LG 84-inch Ultra Definition 3D TV, which you can see above.

Many manufacturers are marketing their QFHD products as being 4K, which has now become a catchall phrase. So if you hear about a 4K TV, the resolution would actually be 3840 x 2160, i.e. Quad HD.

Now, Ultra HD is simply a marketing term that has come up recently denoting resolutions higher than full HD (1080p). Its more likely that when you’ll be buying a new TV or projector in the next few years their resolution will be stated as 4K Ultra HD. In fact 8K would still be Ultra HD.