How can I fix the screen on my S4?

A

AC Question

S4 messed up

OK so I dropped my galaxy s4 not a hard fall pretty lightly actually no visible damage but the screen when I turn it on it is a black background with green red and blue dots scattered around and then the background slowly turns bright green almost as if someone is turning up the brightness. color gets more light too. The dots stay through this whole thing. When it is super bright the screen goes all black and then flashes the bight green then stays black. Take out the battery, reboot, when I turn it on does the same thing from the start. did the home+volume+sleep thing, makes a black line horizontally through the screen. reboot, line is gone. PLZ Help I love this phone and this is the first major problem that has happened to me.