The highest display resolution of the UE48JU6485 is 4K Ultra HD. That's over four times the display resolution of the most common HD type of Full HD. 4K Ultra HD TVs have a resolution of 3840 x 2160 pixels.
A 4K Ultra HD HD type is in fact the best display resolution amongst all mid-size TVs that have been available for more than a year.
An HD Ready HD type is the worst display resolution amongst comparable types of TV.
4K Ultra HD TVs have a resolution of 3840 x 2160 pixels.