How can I get rid of the liquid screen on my note 5 lcd discoloration?

Hi i need your help my note 5 is more than 2 years already with the liquid screen protector. Yesterday I noticed that there is a purple blot at the bottom part of my phone. Then as time goes by the purple blot spread all over the screen. Is it because of the liquid screen protector.? I couldnt think of anything that triggered the spread of discoloration. Hope you can help me on this. How can I get rid of this? I couldn't see anything on my screen now.

Thanks,

Chello