Patent ID: 6864625

Claim:
A color cathode ray tube (CRT), comprising: a envelope having a neck and a face with a phosphor coated screen thereon, the phosphor coated screen comprising a plurality of red, green and blue phosphor dots; red, green and blue electron gun assemblies, each having a source end and electrodes for focusing an electron beam therethrough, the red, green and blue electron guns being disposed in the neck of the CRT; three electron sources disposed at the source ends of the red, green and blue electron gun assemblies; and a shadow mask positioned between the red, green and blue electron gun assemblies, the shadow mask having a plurality of openings, wherein the red, green and blue electron gun assemblies simultaneously focus their respective electron sources into a plurality of electron beams that selectively pass through the plurality of openings such that the electron beams from the red electron gun assembly excites each of the red phosphor dots, the electron beams from the green electron gun assembly excites each of the green phosphor dots, and the electron beams from the blue electron gun assembly excites each of the blue phosphor dots.