Chosen Solution
I replaced the digitizer on my iPad 4 with Retina display. After putting the new screen on and everything I noticed it was darker on the right side of the screen. After putting it on a white background, it’s clear that is is definitely darker on that side. I’m not sure why this is? I was either thinking it could be a bad digitizer and reflecting a darker image on the right side of the screen since I didn’t really notice this before I put the digitizer on. Another possible reason might be that I heated the right side too long when taking the old digitizer off. I’m not sure how heat affects the LCD but I would guess that it would burn it up and not display an image if it affected it at all. Please let me know of any solutions that you think would be worth trying. Thanks!
The only two things that can cause one side of an LCD in an iPad become dim on one side: Damaged the LCD components on the LCD itself during removal or reinstall Or The two circuits controlling the back light were damaged on the logic board. A digitizer wouldn’t single handedly cause this to happen.
