LG G2 screen fading

Hi,

after my phone fell by accident, the screen started fading and displaying vertical lines only on the left side of the screen.

BUT, when I apply pressure (press with my thumb) on the bottom left corner of the screen, everything goes back to normal. Except the vertical lines on the left side, they stay put. :)

When I lock and unlock my device, the faded screen is back and again I have to press it hard to get it to work "normal".

The screen is not cracked...

Any suggestion?

I'll upload some photos later so you can see the problem.

Thank you!