| 摘要 |
<p>Positions of paired perforations 25 that are provided in a shadow mask 20 and through which a vibration suppressor 40 is to be inserted with play are deviated from each other in a horizontal direction and in a vertical direction. Since the positions of the paired perforations 25 are deviated from each other not only in the vertical direction but also in the horizontal direction, upon vibrations of the shadow mask 20, the vibration suppressor 40 surely comes into contact with, rubs against, and separates from the periphery of both of the paired perforations. Consequently, a vibration attenuating effect by the vibration suppressor 40 is exhibited stably, and a vibration decay time can be reduced. <IMAGE></p> |
