It's a fairly recent technology, and I've had a devil of a time finding any. But I'm curious if anyone around here has any experience using them. Here's the place where I've found some OLED/PLED displays:
http://www.crystalfontz.com/index.html
As far as I can tell, these are really the way of the future, and I think they may be a good choice for OpenRPN.
I'm drafting up some basic CAD renderings at the moment, as I think it helps people to see things are actually materializing! Anyways, let me know what you think. I'll draw up a couple of good possibilities (16x1 and 16x2) and try to post them sometime soon.
I'm still having a bit of a pain getting hosting, but one of my friends may be able to donate some space for a while. If so, I'll have a site and nice php driven forum up next week!