Patent ID: 6486596
Filing Date: 2002-11-26
Classification: H01J

Abstract:
A color picture tube comprising:a panel having an outer panel surface whose equivalent radius of curvature taken in the direction of its Y-axis is 10,000 mm or more, and an inner panel surface whose equivalent radius of curvature is smaller than the equivalent radius of curvature of the outer panel surface in the directions of its X-axis, the Y-axis and its diagonal axes; delta type phosphors formed on the inner panel surface; a press forming type of shadow mask being opposed to the inner panel surface and having multiple apertures arranged at a horizontal pitch Pmh and a vertical pitch Pmv, the horizontal pitch being larger by 5% or more at an end of a shorter axis of an effective surface of the shadow mask than in the center of the shadow mask, the horizontal pitch being 0.6 mm or more, and Pmhan electron gun arranged in an in-line manner.