New screen touch won't work, but old cracked screen's touch will.

I have the iPhone 6 Plus so of course I have touch disease. I fixed the touch disease by placing electrical tape over the IC chip but eventually I dropped my phone and cracked the screen. The cracked screen is TERRIBLE, it's completely shattered and only works if I twist it, but it still works. I have ordered 4 replacement screens and the touch works on NONE of them. What could possibly be the huge difference between my cracked screen and the new ones. Two of them worked for a minute or so.