Single row of touch screen stuck on?

For some reason a single row of my touch screen seems to be stuck on.
You can see what I mean here. https://imgur.com/0BYBRjh

And I can't interact with that row at all, even in recovery, dose that mean I need to replace the touch screen? or dose that sound like a louse connection or something?
it happened out of no where, my phone was fine, then I left it by my pc to charge, when I came back the lock screen was freaking out. even after rebooting, it was registering touches all over the place, after leaving it off for a while, it finally settled down to just that single row.

If i Turn off the phone for a while the row is no longer active, it still dose not register touch.
but after a while it lights back up as 'active'

I ran the battery dry last night, and so far this morning, it looks like so far the row is not stuck active,
but parts of that row counts at two touches other parts don't register,
Above the row counts the any touches as a second touch, and below the first touch, as shown here:
https://imgur.com/a/zFzCv

Any Idea what could cause this, or how to fix it?
lg g2 (d800)-cm12.1