IPhone 5c Black Screen but still vibrates on charger?

Ok so I have an IPhone 5c and awhile ago my little sister chucked it at the hardwood floor in my house and the screen came out of the phone a little bit but it didn't effect how it worked or anything so i just left it. Then a few days ago i dropped it face up on linoleum in a classroom and now the screen is black. In the dark you can tell the screen still lights up a tiny bit but other than that nothing happens. I've tried holding down the lock button several times and holding down both the lock button and the home button at the same time. Nothing works. I've also tried plugging it into my computer and syncing it just in case i lose everything but i have no access to anything because my phone is locked with a pass code.
I've plugged it into its charger and it vibrates like its charging, but still nothing shows up on the screen. Is there any way I can fix this? Or am I going to have to get a new phone? Please and thank you to anyone who helps.

Uhm, as far as I'm able to conclude, there's something wrong with the brightness of the screen, I guess. Obviously, something is wrong with the screen. As you're saying it performs all the functions out there but the screen is black. I prefer you to go to some GOOD and TRUSTWORTHY mobile shop and get it checked, if they say they'll have to open it and check it, then don't allow them, for it will destroy the phone even more.
Try fixing the screen, I really hope it gets okay. Otherwise get a new one? :/
Please visit my profile, and answer my question regarding iphone. It'll mean a lot.

There's probably a phone error on your phone.