His design, the Telechrome, used three electron guns aimed at a phosphor covered plate in the center of the tube, the guns were aimed at different faces of the patterned phosphor.
12.
Telechrome was selected as the basis for a UK-wide television standard by a committee in 1944, but the difficult task of converting the two-color system to three-color RGB was still underway when Baird died in 1946.
