Vertical colored lines on broken screen -- is it just my screen? I cracked my iPhone 5S screen on pavement. It's currently not covered under AppleCare. I'm wondering, though, if it's worth it to take this to one of those companies that replace broken screens. From what I know, they just replace the glass -- am I wrong in thinking that it's not just the glass that's broken here?
The glass and screen are fused together at the factory. Replacement kits, such as those sold by iFixit, include the glass, LCD/digitizer (screen), and other parts. Cell phone repair stores/kiosks use this same type of thing when repairing devices.

It's possible that additional parts inside the device were damaged, but it's also just as possible (and probably more likely) that the screen is simply too heavily damaged to display anything.

Also of note - Apple will fix a broken screen for $129 out of warranty, so keep that in mind when comparing prices if you move forward with repairs.