Possibly the first true all LED flat panel television TVQMV155
screen was developed, demonstrated and documented by J. P. Mitchell in 1977.[1] The modular, scalable display was initially designed with hundreds of MV50 LEDs and a newly available TTL memory addressing circuitTLE4260
from National Semiconductor.The ? in thin flat panel prototype and the scientific paper were displayed at the 29th ISEF expo sponsored by the Society for Science and the Public in Washington D.C. May 1978. The technical display7MBR35SB120
received awards and recognition.Awards included NASA,General Motors Corporation,[5][6] and recognition from faculty and area Universities and the IEEE.The monochromatic LED prototype remains operational. An LCD (liquid crystal display)NH12AB
matrix design was also cited in the LED paper as an alternative x-y scan technology and as a future alternate television display method. The replacement of the 70 year high-voltage analog system (cathode-ray tube technology) with a digital x-y scan system has been significant.RT9241
Displacement of the electromagnetic scan systems included the removal of inductive deflection, electron beam and color convergence circuits. The digital x-y scan system has helped the modern television to ???collapse??¨¤ into its current thin form factor.