Patent ID: 6847160
Filing Date: 2005-01-25
Classification: H01J

Abstract:
1. A color cathode-ray tube comprising: a panel; a fluorescent screen provided at an inner surface of the panel; a funnel sealably coupled to the panel; an electron gun fitted in a neck portion of the funnel; a deflection yoke arranged at a yoke portion of the funnel; a shadow mask spaced apart from the fluorescent screen by a desired distance; and a frame supporting the shadow mask while applying tension to the shadow mask; wherein a relation of 0.12×L′<S<0.27×L′ is satisfied where “L” represents a length from a seal line at which the panel and the funnel are sealably coupled together, to a yoke line of the funnel in an axial direction of the tube, “L′” represents ½ of the length of the seal line, “A” represents ½ of a seal stress adjustment line formed by connecting points spaced apart from the seal line by a distance of “L×0.67” toward the yoke portion, and “S” represents a difference between “L′” and “A”.