| 摘要 |
<p>To provide a shadow-mask color cathode ray tube produces high-quality image by preventing the slot width or slot length from increasing when a shadow mask is press-molded. The shadow mask in which the opening shape of an electron-beam passing hole formed in an effective area is the slot type 53 and it is press-molded and formed into an approximately rectangular approximately domed shape so that the inequalities S3<S2 and S3<S2' are satisfied, where S3 is the width of a slot 533 located at the horizontal-scanning-direction corner section in the effective face area, S2 is the width of a slot 532, S2' is the width of a slot 532'. <IMAGE></p> |
