I have been lugging around a laptop with a dead PSU and a nice screen in the hopes that someday I might be able to cannibalize it into a standalone display.
Sadly, I haven't been able to find anything available commercially that would allow me to do this. I have seen some DIY solutions, but they all involve either electrical engineering graduate student level stuff, or very expensive parts.
Honestly, I would be happy to hear if you find something that can work, but I won't be holding my breath.