tvguy wrote:
Plasma tv`s was working in the 70`s and was never brought out on the
market. They was done by sony. Now sony is sorry that they have
waited so long to bring them out.



They were also monochrome, lacking the technology at the time to create
good color. Also the prototype was quite a small screen with a large
electronics package, it wasn't until modern chips containing tens of
millions of transistors in a single package that plasma became practical.