Seeing a crack in the glass, i guess it was dropped, and if it fell on a corner lines can occur (my X23 (no brand) has several colorful stripes on the right side of the screen, but still has functionality as touchscreen (although not visible)).
When looking at the parts picture, I get a slight deja vu regarding my Nokia E7 which taken apart looks nearly the same. (knowing the background of fxtec) heck, why bother reinventing the wheel, while the one you developed still runs.