The UE40JU6572 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 TV's display resolution (4K Ultra HD) is in fact the best display resolution amongst all latest mid-size TVs.
Amongst similar types of TV the worst display resolution is Full HD.
4K Ultra HD TVs have a resolution of 3840 x 2160 pixels.
Other 4K Ultra HD televisions currently available that you might also want to look at include because of it's better review score, the LG 43UF640 (£375.00).