Hi Gil!
I am sorry for previous message - simply forget it.
What kind of picture you want to display? Can it be black & white (monochrome)? What do you mean about electromagnetic components for your display?
I have an offer for electromagnetic displays (and componets) with led. Display component (one "pixel") looks like small black box: when it is open led is on and background of led (whole front side) is changing from black to green (yellow etc) - when it is close led is off and background is changing to black. Factory is offering components for displays and complete graphic displays(connected by RS232 or 485).
I have saw example of this display at Munich exhibition. It was really fine! Maybe it isn't fast, but picture is very clear and you can read it from long distance.
I don't remeber the name of the factory, but if you want I can find it, because I still have cd rom containing its offer. If it is interesting to you, I can send you details and photos by email.

Greetings,
Jacek