The highest display resolution of the 55 FLX 9490 is 4K Ultra HD. That's over four times the display resolution of a Full HD television, which is the most frequently found 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 large TVs that have been around for around the same time as the 55 FLX 9490.
Amongst similar types of television the worst display resolution is Full HD.
4K Ultra HD TVs have a resolution of 3840 x 2160 pixels.
It may also be worth also looking at one of the alternative 4K Ultra HD TVs currently available including the 65UB950 (£1,699.00), or the 55UB850 (£999.00) both from LG which has a better Rating.