Why is there a purple/green screen?

i turned on my android tablet one day and all it shows is purple. if u change angles it changes to green... I cant seem to get the purple/green screen off. And whenever i turn it on, it just appears again!

from Android Forums at AndroidCentral.com - Ask a Question //forums.androidcentral.com/ask-question/758460-why-there-purple-green-screen-new-post.html
via IFTTT