Problem with my screen..? topic

Hi,

So my Nexus 4 did work well, only I found a problem in the begin.
First with the navbar, it's was unresponsive, until I change the screen/rotation, but normale mode i didn't responde, not after any clear and reset, or another custom kernel/rom.

2 weeks after, my screen a little bit above the navbar, was unresposive.
So I can't open Apps in the home menu.

And now above the Apps's icon is the another row above also unresponive!
What is this?

I have reseted my phone 5 times now.