The UE48JU6465 has a maximum display resolution of 4K Ultra HD. That's over four times the display resolution of a Full HD TV, which is the most common display resolution. 4K Ultra HD TVs have a resolution of 3840 x 2160 pixels.
This television's display resolution (4K Ultra HD) is in fact the best display resolution amongst all TVs that have been on the market for a comparable time to the UE48JU6465.
An HD Ready HD type is the worst display resolution across similar types of television.
4K Ultra HD TVs have a resolution of 3840 x 2160 pixels.