Patent ID: 6104132
Filing Date: 2000-08-15
Classification: H01J

Abstract:
A color cathode ray tube comprising a tubes including a panel on which a fluorescent screen is formed, a neck including an electron gun, and a funnel for connecting the panel and the neck in the tube axis direction; and a shadow mask assembly and an inner shield provided for the shadow mask assembly, both of which are disposed within the tube; wherein:the shadow mask assembly includes a shadow mask made of invar, a mask frame, and a spring for mounting the shadow mask assembly in the panel;the shadow mask has a curved surface having electron beam passing holes and a skirt folded from the margin of the curved surface and extending in the tube axis direction;the mask frame is substantially rectangular, the cross section of which is substantially L-shaped, and which mask frame includes a side wall extending in the tube axis direction and a flange extending transverse to the tube axis; andthe side wall is provided with bosses including a proximal edge with a flange, the shadow-mask skirt is located more closely to the fluorescent screen than to any one of the bosses, and the shadow-mask skirt is secured to the inside of the mask-frame side wall.