I have recently upgraded my iPad 1st gen 16GB to a iPad 1st gen 32GB. I took advantage of the cheaper pricing . I have noticed that at 50% brightness or higher there is a strange banding pattern that appears on the screen ONLY on a BLACK background. See pic below. Viewing normal content seems fine. This just seems weird but I've been dealing with it as it doesn't affect typical usage. I know its not a huge deal but does anyone with an iPad 1 or iPad 2 notice this? Or is it just a slight defect?