iPad Is my iPad defective? (Moving LCD)

Sorry if this is in the wrong forum.
I've had my iPad 4 for about a year and a half. I've noticed the LCD moves around quite a lot, because the gaps on the edge of the screen are sometimes bigger than one another, and I've noticed that today it is extremely noticeable.
Here is a picture I took. Sorry if they are a bit grainy, they're from my iPod touch. If you see, not only is it completely out of place (it might not be clearly shown in the picture), but slanted as well. Is this normal, and is it a problem? I'm not one of those people who return their stuff at every single misplacement, but is it something that I should be worried about?

myrtlebee said:

Nothing should be moving. That's completely abnormal. Unfortunately, unless you've purchased AppleCare, you'll probably have to pay full price for a repair from Apple or a third party.

Click to expand...

Thanks. But as I say, unless it affects my usage, it shouldn't be a problem.
Here is another picture, as the last one didn't show very much