Glitchy touchscreen and backlight issues
I recently got into a bad car accident, my phone as well. (don't worry, I wasn't texting and driving.) Initially, after I got my phone from my totaled car, it was dead. I got it back up and running with the help of a hair dryer, but I ran into display issues once it booted up. It's got lines in the display where things are being drawn on the screen, and there is obvious damage to the backlight around the top since some areas are brighter than others. Every now and then, the backlight will die completely or be so dim I can't see it in complete darkness. When I use the phone the touchscreen will freak out and open apps I didn't press on. I was planning on replacing the screen, but I'm not sure if it's just the screen or a deeper problem altogether.
Please advise me on what I should do next. Thanks in advance.
Images of screen:
Is this a good question?