Purple and blue bleeding from right of screen.

OK, so, I dropped my phone. When I picked it up, the bottom half of the screen was blank, but would still respond to touch ( it still recognised my thumbprint, etc). I restarted it, and everything was fine except for a horizontal line across the screen and a few light blue pixels at the far right. Now, about 2 hours later, a small purple and blue patch has grown on the screen, and is still very slowly growing.

Can anyone tell me what's wrong with it? I'm going to get it checked out on Friday.

Can it be fixed?