iPad dropped, now with red screen/background

I've had the original iPad for several months now, and it has been working fine. However, yesterday, the iPad was dropped (a couple of inches from the ground), and now the background screen is red. You can still see the icons and the iPad remains fully functional, except for the red discoloration in the background. For example, when you play a video, the letterbox is now red instead of black.

Has anyone experienced this before? I've synced it, but no effect. Don't want to try a full restore unless it's absolutely necessary. I've read on the net that it may be corrected over time?

Thanks in advance.