MacBook Air 2012 Screen Looks - Burned?

[deevey]

Attached image - this occurred in the past month. the screen looks almost physically burned, otherwise its working fine.

Any ideas on the possible cause? and would a new display sort out the problem.

And in case you were wondering it's Both windows and MacOS - not a driver issue.

 

[MBAir2010]

I would check the ribbon connection on the logic board, sometimes they jar loose JUST enough for this effect.