A: Urbana, Illinois, United States
In 1964 Donald Bitzer, H. Gene Slottow, and Robert Willson at the University of Illinois at Urbana-Champaign invented the first plasma video display for the PLATO Computer System.
The display was monochrome neon orange and incorporated both memory and bitmapped graphics. Built by Owens-Illinois glass, the flat panels were marketed under the name "Digivue."