| 摘要 |
Disclosed is a structure of panel in flat-type CRT (Cathode Ray Tube), which is capable of securing a stable vacuum intensity by applying sufficient tension to a face part of a panel using a straight safety band, and of effectively reducing an advance of a crack and scattering of fragments due to an external shock, by optimizing the relationship among an MMH (Mold Match Height), a CFT (Center Face Thickness) and an OAH (Overall Height), which are design factors. The structure of panel in flat-type CRT (Cathode Ray Tube) includes a face part having a flat outer surface and an inner surface of a fixed curvature, and a skirt part extending from an edge of the face part to a rear portion. When a height from a MML (Mold Match Line), which is an extension line of a match line between an upper external mold and a lower external mold to form the panel, to an outer center of a face of the panel is designated as a MMH and a thickness of the center of the face surface of the panel is designated as a CFT, the relationship between the MMH and the CFT satisfies MMH<=CFT.
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