| 摘要 |
PROBLEM TO BE SOLVED: To provide a color picture tube faceplate panel which retains strength even if drawn, and keeps a large inclination which facilitates the removal from a mold in the manufacturing process. SOLUTION: An improved color picture tube includes a glass envelope comprising a faceplate panel, a funnel, and a neck. The faceplate panel has a transparent rectangular faceplate having four sides and four corners and includes a transparent rectangular faceplate having a cathodoluminescent screen on an inner surface thereof, and a sidewall peripherally extending from the the faceplate. The end of the sidewall facing the funnel has a seal land to be sealed to the funnel. The improvement comprises that the seal land of the sidewall has varied width around the periphery of the panel, the widest portions of the seal land of the sidewall are located along the panel sides, and the narrowest portions of the seal land of the sidewall are located at the corners of the panel. The width of the seal land of the sidewall is smaller in the corners of the panel by 5% to 17% than in the side centers of the panel. COPYRIGHT: (C)2005,JPO&NCIPI
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