The highest display resolution of the UE50J5500 is Full HD. That's 75% less display resolution than a 4K Ultra HD TV, which is the most frequently found display resolution. Full HD TVs have a resolution of 1920 x 1080 pixels.
Full HD TVs have a resolution of 1920 x 1080 pixels.
If you are looking for a TV with a higher display resolution then you might also want to consider the Philips 50PUT6400 (4K Ultra HD and higher rated).