| 摘要 |
A funnel for a color cathode ray tube comprises a seal end surface to which a panel is sealed through a frit glass. An area occupying at least 50% of the seal end surface in a width direction is a rough surface. The rough surface satisfies conditions of 10<=Rz<=25 mum and 2.5<Sm/Rz<=6.0, where Rz is the ten point height of roughness profile in the width direction and Sm is the mean interval of profile peaks and profile valleys in the width direction. The rough surface comprises a plurality of dimple-like micro cavities formed by the profile peaks and the profile valleys.
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