Horizontal bars at bottom of screen (near home button)

I have a greyish/transparent bar, more like a series of lines at the bottom of the screen. When I rotate the display, the lines remain. Sometimes they aren't completely there, but a single thin line about 1/2 inch from the bottom seems to always be there. From what I have read, I believe it to be the LCD, but I'd like to be a little more certain before I buy the part and open it up.

I am confident with doing this type of work, I just want to be sure of the part that is needed.

Thank you in advance.