Hello

I own a Dell Vostro laptop and after closing the upper lid several times on the keyboard, the keyboard left marks on the screen similar to a "waffle" pattern. It won't come off, not even when I try to clean it, and I can't gently rub it off either. It seems like the keyboard left a permanent print on my screen. A photo is attached. What could be the explanation for that and what solution is available for the damage?

thank you.