iPad screen has distorted colors and dark sheen on the edges

Hello guys! I've encountered a minor glitch last night when the whites of my screen turned aquamarine. Seconds after, it went back to normal. Today, as I was using my iPad my screen's condition got worse. There's a maroon-like sheen on the edges, colors are distorted, and some icons like the keyboard subtly show up on the home screen. I've been using my iPad Air 2 for 3 years now and it has been in good condition until this morning.

I've tried the smacking technique but it didn't work. :/

I've observed that the top right side of the screen easily heats up. Just to let you all know, it didn't experience any fall recently. WHAT AM I GOING TO DOOOO?!