Screen Issue

[HeftyBump]

I dropped my phone onto the ground and the back cover flew off while i was using an extended battery. No physical damage can be seen by me. I go to turn my phone on and the screen is half black half green (constantly switching colors every 30 seconds or so). Do i need to get a new phone or is there a way to fix this? Apparently the screen is "bleeding". Can anyone help who has had a similar problem?