My ipad has a green patches

Hi

For now it probably isn’t something to worry about as long at the display isn’t physically damaged (cracked glass,internal damage,chassis bends)

From what the photo shows it could just be a software issue (assuming it’s a screen shot rather than a photo taken from a separate camera)

If it is a screen shot you should try reseting the device (here’s a guide for that https://support.apple.com/en-gb/HT201252)or taking it to apple to see if it’s a software bug that they could fix in a future software update

Hopefully this helps

Any questions please ask

Thanks:-)