| 摘要 |
A color cathode ray tube having an evacuated envelope including a panel portion, a neck portion and a funnel portion for connecting the panel portion and the neck portion. The panel portion includes a faceplate, a plural-color phosphor screen formed on an inner surface of the faceplate and having a multiplicity of phosphor dots of a plurality of colors. A shadow mask has a multiplicity of apertures therein and spaced from the phosphor screen and a plural-beam in-line type electron gun is housed in the neck portion. The plural-color phosphor screen is configured such that a first horizontal phosphor dot pitch Ph on a horizontal center line of a useful area of the phosphor screen at a first predetermined distance from a center of the useful area of the phosphor screen toward sides of the useful area is less than or equal to 101% of a second horizontal phosphor dot pitch Ph at the center of the useful area, wherein the first predetermined distance is two-thirds of a distance from the center of the useful area to the sides of the useful area. A third horizontal phosphor dot pitch Ph at corners of the useful area is larger than the second horizontal phosphor dot pitch Ph at the center of the useful area and a first vertical phosphor dot pitch Pv at the corners of the useful area is smaller than a second vertical phosphor dot pitch Pv at the center of the useful area.
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