Panel for slim cathode ray tubes

Abstract

Disclosed herein is a display screen for a thin cathode ray tube constructed so that the deflection angle of electron beams is 110 degrees or more. The thin cathode ray tube includes a tube portion formed by joining a display panel and a tapered portion to each other. The display screen includes: a screen portion on which an image is displayed; a side wall disposed around the screen portion such that the side wall is curved toward the tapered portion; and a sealing edge formed on the side wall on which the display screen is connected to the tapered portion. The tapered sections are joined together. Assuming that the thickness of the central position of the screen portion is Tc, the thickness of the long side of the sealed edge is Tx, the thickness of the short side of the sealed edge is Ty, and the thickness of the diagonal portion of the sealed edge is Td, the display screen is constructed so that The following inequalities: 0.8≤Tc / Ty≤Tc / Tx≤1.0≤Tc / Td, and Td<Tx<Ty, and the sidewall has an outer edge angle of 0.5 to 1.5 degrees.

Description

technical field [0001] The present invention relates to a thin type cathode ray tube, and more particularly, the present invention relates to a display screen for a color cathode ray tube, wherein the center thickness of the display screen and the thickness of the sealing edge can be appropriately set, and can be appropriately set The outer edge corner of the display screen, so as to minimize the stress concentration caused by the increase of the deflection angle, ensure sufficient rigidity, improve the anti-riot characteristics and plasticity of the display screen, and effectively prevent the reinforcement belt from slipping. Background technique [0002] In general, a cathode ray tube is a device for converting electrical signals into electron beams and scanning the electron beams across a phosphor screen to display images on a display screen. [0003] FIG. 1 is a partially cutaway side view showing a conventional cathode ray tube, and FIG. 2 is a sectional view showing a ...

AI Technical Summary

Problems solved by technology

However, as described above, when the outer edge angle S of the display screen 1 is large, the reinforcing strip 11 is liable to slip.

Therefore, it is difficult to perform the reinforcing tape winding process, and it is difficult to effectively distribute the stress applied to the pipe portion 10 when the reinforcing tape 11 slips.

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