Default Exchange broken display

Hey,

I dropped my phone from the fourth floor, and now the display is messed up. I can hear sounds from the phone, so it's OK I guess. The screen shows nothing at all though. I was thinking to replace the display and digitizer, but since the entire phone has bumps I am afraid something else is broken except for the display.

Do you think buying a new screen and digitizer from the link below will help me?
http://www.ebay.com/itm/SAMSUNG-I919...item4aceab7e10

Thanks in advance, anyone who has tried changing the display on their phone before...