Screen inconsistencies topic

Not sure if this in the right place (if not, mods please move), but I recently bought a T-Mobile variant Samsung Galaxy S III (T999L). Target was having a sale on their Brightspot Mobile devices, and 0 for a Galaxy S III was too good to pass up. I've had the phone for a week and a half, and it's a really nice device. The screen at any brightness is amazing. I've used a few AMOLED and SLCD screens over time, but my main device for the past year has been a Nexus 5. Nothing that I've owned compared to this AMOLED screen.

One thing that I've noticed, however, with the screen is that it has some inconsistent splotches on it. What are these splotches you may ask? They only are noticeable on very dark backgrounds with the very dimmest brightness setting. When viewing something dark in a dark room with auto-brightness turned on is how I first noticed it. There are some dark lines and spots on the screen.

Here is the screen with a black background in a dark room, on auto-brightness:



Look at all of those marks. They're hardly noticeable, but they're there. In fact, the only way I could pick them up on camera was to set my DSLR up on a tripod and shoot a 60-second exposure.

Anybody seen anything like this before? Should I be worried about the longevity of the screen? It's almost a non-issue for me, but I thought I'd bring it up. Thanks!