The image didn't show but it's a common failure but you can't know if it's connections or the panel. Hope it's in warranty because one of the awful things about curved panels is they are very fragile. There are articles about that.
If there is no warranty and you are into such repair, try the old unplug and plug of the connections.
So my Samsung has this problem and it tends to come and go. Is it the connectors for the screen on top behind the panel? Any input?