| 摘要 |
In a shadow mask (7) for a color cathode ray tube, there are a region (23) having only dummy bridges (21), and a mixed region (24) having the dummy bridges (21) and real bridges (22). A dummy bridge size in the region (23) having only the dummy bridges (21) is greater than a dummy bridge size in the mixed region (24) having the dummy bridges (21) and the real bridges (22). The vertical size of the region (23) having only the dummy bridges (21) is greater than 50 percent of the vertical size of the shadow mask.
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