| 摘要 |
A black matrix screen for a slotted mask color television picture tube is printed using a shortened linear source of actinic radiation to result in deposition of black matrix material in the shadows of the mask webs appearing in the phosphor stripe area. Screen reflectivity is thereby reduced and contrast enhanced. By controlling vertical size of the black matrix material in the shadow cast by each respective web between vertically-adjacent slots, the tube may be made either positive or negative guardband in the vertical direction.
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