Make a lcd screen

I'm thinking of getting me one of those custom designed lcd screens. They look so cool! And you can make them into almost anything you like. I can for example take a picture and make it into one of those lcd screens. I wonder how much it will cost. And how big can the lcd screen be? I'm going to look into that a bit more before i buy one. But I'm thinking of making a lcd out of a picture of me and y wife. I think she'll like that.