This might be beating a dead horse Rolo, but I know that flat panel monitors exist that actually have that function built in. Some of them have the function available for the user and some are buried somewhere on a circuit board just waiting for someone like you to come around and unlock that function.
The Sharp LC20SH3U is one of those TV/Monitors that have that function available to the user. However, finding one might be the trick. You didn't mention what size LCD panel you needed or what aspect ratio, but this one is a 20 inch 4x3. Another one is the Sharp LC-20B2UB also a 4x3.
The HITACHI C20-LC800 is another candidate at 20 inches and a 4x3 format.
Anyway, I guess what i'm trying to say is that you might be able to find what you are looking for out there on the Internet. I know this is an old thread but for what its worth, good luck.