Mmm, I'm no pro at display internals (despite destroying one or two myself) but I think when you pulled up that outer layer you also ripped up all the transparent conductors that are used for the capacitance layer.
https://en.wikipedia.org/wiki/Indium_tin_oxide You can see the "fan-out" at the bottom, about the same as the eink. There are three chunks for left rows, columns, right rows. Since everything is ripped up it's lucky that a few spots near the bottom work.
You can try my UsbMode.apk (in my sig at my website), which among other things will show you touches by coordinates. Or you can go to Developer Options and turn on touches or coordinates.
Unless the factory has a repair plan I'm not sure that you're going to find a replacement screen.