| 摘要 |
A color CRT suppresses deformation of the main shadow mask surface (21) after fastening the shadow mask (5) to the mask frame (6). Numerous substantially rectangular grooves (25) or substantially circular recesses (55') are formed in the damper part (26, 56) disposed to the shadow mask skirt (24) so that the bending strength in the circumference direction of skirt is greater than the bending strength in the direction parallel to the tube axis. <IMAGE> |
