Patent ID: 6172450
Filing Date: 2001-01-09
Classification: H01J

Abstract:
A color cathode-ray tube electron gun, which comprises:a focusing electrode having at least a first focusing electrode, a second focusing electrode, a third focusing electrode and a fourth focusing electrode;a quadruple lens action, formed by said third focusing electrode and said fourth focusing electrode;a quadruple lens that controls said quadruple lens action, formed by said first focusing electrode, said second focusing electrode and said third focusing electrode; andopenings in said first focusing electrode, said second focusing electrode and said third focusing electrode, corresponding to a right and a left electron beam emitted from said electron gun, said openings having different aspect ratios in adjacent focusing electrodes of said first focusing electrode, said second focusing electrode and said third focusing electrode, where each of said opening aspect ratios is set in such a manner that a major diameter/minor diameter is greater than 1.05.