Dropped my phone and screen failed.

Brief summary of what happened:

Dropped phone from hip-level onto hardwood floor. I noticed a small purple splotch on the phone that obscured part of the screen. This splotch slowly grew until it covered the whole screen in a somewhat see through purple color. The following morning the phone screen was a solid black. Still responds with the "powering on" vibration when I press the power button.

Any idea on what the problem is and how it can be fixed? Thank you.