They might call that abuse and void the warranty. Just report it as-is and don't embellish. Let Samsung fix it.
Bob
This is the second time this is happened this time it's worse. Have looked and looked for similar complaints, have seen none. There are a series Of vertical lines only at the top in a paint drip type pattern. There are two levels of intensity, but run for most of the distance across the too. If you press the areas where the color is bleeding purpleish, and release pressure , you see a multitude of colors as you release for a couple of seconds

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic