Light banding on screen after battery replacement

I recently replaced the battery in an iPhone 4S, swapping out the stock battery for a "High Capacity" (2680 mAh) one. After rebooting the device, I noticed horizontal banding on the screen, most notably behind white text/images on a dark background. I'm thinking that I may have damaged a ribbon cable somewhere, but I don't see any noticeable defects. Has anyone else ran into this issue or maybe point me in the direction of a fix? I've attached a picture of the screen showing the issue and a mockup in case it's hard to discern from the actual picture.

Picture: http://imgur.com/p6c6rVv

Mockup: http://imgur.com/wdIGiWr

EDIT: These two previous questions (streaks / ghosting / lines on iPhone 4S screen and Horizontal lines on LCD u) seem to suggest it's a faulty LCD, though it was definitely working fine before replacement.