Attempting to fix color abnormalities caused screen to black out

After falling face-first off of a ~2ft high surface onto the ground, my iPad’s display gained a strange red tinge-anything black appeared streaky and red, and things that were white became a light shade of blue. I found the fix here: Display screen colors distorted and followed the advice. I smacked the iPad on the back with medium strength around ten times near the top-left corner. Nothing changed. I did it again, this time a bit harder. Nothing changed. I did it again, this time even harder, and the iPad’s screen went black—not black as in off, still emitting light, just like I was looking at a fullscreen picture of black.

The touchscreen still seems to work, as I was able to estimate the position of the shutdown slider and turn the iPad off (to where the black screen became actually black, displaying no light whatsoever). I kept it like this for a few hours and turned it back on this morning, and the screen displayed the brightness it usually does while it’s starting up before reverting to a dimmer brightness (presumably on the lockscreen) that would fade to pure black after a few seconds of inactivity, like the screen usually does.

Help?