ELECTRON GUN FOR COLOR CATHODE RAY TUBE

PROBLEM TO BE SOLVED: To correct static miss convergence caused by the influence of the vertical magnetic field component of earth magnetism by simple structure. SOLUTION: The width DR of a deflecting path LR and the width DB of a deflecting path LB are formed so as to be different each other according to the intensity and direction of the vertical magnetic field component of earth magnetism. For example, the width DR is 4760μm and the width DB is 4720μm, and the difference between them is 40μm. In the case that the widths DR, DB are compared with the reference setting value formed the same as these, the intensity of an electric field Er is weak and the intensity of an electric field Eb is strong. Electron beams passing through the deflecting path LR and the deflecting path LB are shifted in the plus X direction.