| 摘要 |
A cathode-ray tube comprises an evacuated envelope having a faceplate panel with a mold-match line. A luminescent screen is disposed on an inner surface of the panel. The envelope further includes a funnel and a neck portion. The funnel is joined to the panel. An electron gun, for generating and directing at least one electron beam toward the screen, is located in the neck portion. A shrinkfit implosion protection band is fitted on the periphery of the panel to apply a compressive force thereto as a result of the tension of the band. The band includes a double thickness of material, a section of which extends forward of the mold-match line. The band is improved over prior bands by adjusting the effective sectional area of the double thickness portion to a value appropriate to provide deformation compensation to the faceplate panel, thereby maintaining register of the electron beam on the screen.
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