The highest display resolution of the Samsung UE40JU6640 is 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.
A 4K Ultra HD HD type is actually the best display resolution across all televisions that were launched in the last 12 months.
The worst display resolution amongst comparable types of TV is HD Ready.
4K Ultra HD TVs have a resolution of 3840 x 2160 pixels.
There are a number of alternative 4K Ultra HD TVs currently available which you might also want to look at including because of it's better review score, the LOEWE Art 40 (£599.00), or the Samsung UE40JU6000 (£360.00).