Electron beam generation and control for dynamic color separation

A CRT having a phosphor screen, said phosphor screen having a pattern of triads of primary color stripes and an electron beam forming structure for generating an electron beam and impingement control of said;

• in relation to the color stripes of a said triad at each pixel of said screen for at least one electron beam group comprising:
• an electron emissive cathode,
• a multi-aperture G1 grid structure wherein the G1 grid for each said beam group has a plurality of apertures for generating a plurality of electron beams for forming an electron beam group, in which grid structure said apertures are sized and spaced such that a plurality of energy distributions of said electron beams overlap and combine to provide a shape and size, of an impingement pattern of the beam group, said impingement pattern shape and size being means for precisely matching a shape and size of a primary color stripe at said pixel, when the beam group is focused on said output screen surface,
• a G2 electrode structure having an aperture pattern corresponding to said multi-aperture G1 grid structure and arranged to provide an electric field to provide a beam accelerating voltage to said electron beam group,
• means for focusing the electron beam group, and
• an output anode electrode of an electron gun portion of said beam forming structure for accelerating said electron beam.