Patent ID: 6965192
Filing Date: 2005-11-15
Classification: H01J

Abstract:
1. A color picture tube apparatus comprising: a panel that includes a screen having phosphors of a plurality of colors disposed thereon; an electron gun having a plurality of cathodes disposed inline and a focusing electrode and a final accelerating electrode forming a main lens electric field and a shield cap, the focusing electrode and the final accelerating electrode each including a tubular electrode having an aperture common to the electron beams and a field-correction electrode plate having a plurality of beam through holes wherein: the tubular electrodes of the focusing electrode and the final accelerating electrode are disposed with a gap therebetween; the field-correction electrode plate of the focusing electrode is set back from an edge of the aperture with a main surface facing the gap and is disposed at a position immediately adjacent to the aperture; the field-correction electrode plate of the final accelerating electrode is set back from an edge of the aperture with a main surface facing the gap and is proved apart from a base of the shield cap; and a pair of eave-shaped electrode plates are provided on the field-correction electrode plate of at least one of the focusing electrode and the final accelerating electrode, so as to be on either side of the beam through holes in a vertical scan direction, and to extend horizontally and toward the gap.