| 摘要 |
<p>A color picture tube featured in that a panel (1) is substantially flat on its outer surface, an inner surface of the panel is curved, a shadow mask (5) has a curved plane having its curvature that is further greater than the curved plane on the inner panel surface, the panel is made of glass such as a tint material, a ring-like magnet assembly (12) (PCM) for convergence adjustment is provided outside of the neck (2), a first electromagnetic quadrupole coil (20) is further attached to a portion outside of the neck (2) for causing an electron beam spacing to change or vary in accordance with a deflection angle, a second electromagnetic quadrupole coil is attached to a deflection yoke, and the distance between adjacent ones of three cathodes of an electron gun is determined to be greater than or equal to 6.0 millimeters (mm). <IMAGE></p> |
