Patent ID: 7012356
Filing Date: 2006-03-14
Classification: H01J

Abstract:
1. A color cathode ray tube comprising: a panel having a fluorescent surface therein; a funnel coupled sealingly with the panel; electron guns installed in the funnel, for projecting electron beams; a deflection yoke for deflecting the electron beams; and a shadow mask for selecting colors, wherein the shadow mask satisfies the following condition: where B1 is a length of a bridge as a distance between holes in a vertical direction at a center portion of the shadow mask; B2 is a length of a bridge as a distance between holes in a vertical direction at a corner portion of the shadow mask; B3 is a length of a bridge as a distance between holes at edge portions of the shadow mask in a direction of a long axis thereof; P1 is a vertical pitch of the holes at the center portion of the shadow mask; P2 is a vertical pitch of the holes at a corner portion of the shadow mask; and P3 is a vertical pitch of the holes at the edge portions of the shadow mask in a direction of a long axis thereof.