| 摘要 |
PROBLEM TO BE SOLVED: To prevent an electric arc from occurring between the anode and cathode plates and prevent degradation of brightness of an image, by providing an bias electrode with at least a resistance layer under a phosphor element, depositing this resistance layer on a conductive layer, and applying a bias to the phosphor element. SOLUTION: Conductive strips 5R, 5G, 5B of an anode are interconnected according to a set of strips assigned to the same color. These conductive strips 5R, 5G, 5B are covered by resistance strips 8 made of resistant material. Phosphor element 4R, 4G, 4B are deposited on the resistance strips 8, and not exist directly on the conductive strips 5R, 5G, 5B. A electrode for bias of the phosphor elements is provided with the conductive strips 5R, 5G, 5B and the resistance strips 8. Thus, an image is efficiently protected from an electric arc causing obstacle, and a lateral space does not increase between strips of the phosphor elements.
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