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Glass structure of CRT

A cathode ray tube and glass technology, applied in the direction of cathode ray tube/electron beam tube, cathode ray/electron beam tube shell/container, discharge tube, etc., can solve the problems of reducing the reliability of cathode ray tube

Inactive Publication Date: 2003-12-24
MERIDIAN SOLAR & DISPLAY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, shadows are cast around the phosphor, which can reduce the reliability of the CRT

Method used

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  • Glass structure of CRT
  • Glass structure of CRT
  • Glass structure of CRT

Examples

Experimental program
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Embodiment Construction

[0070] Detailed description of the preferred embodiment

[0071] Figure 6 is a schematic diagram describing the reference lines and reference points of the glass structure of the cathode ray tube of the present invention.

[0072] TOR (Top of Round) refers to the boundary line where the yoke portion 22 of the deflection yoke funnel 20 meets the body portion 21 of the funnel 20 .

[0073] NSL (Neck Seal Line) refers to the boundary line where the yoke portion 22 of the funnel 20 meets the neck portion 23 where the electron gun 130 is placed.

[0074] RL (reference line) refers to the imaginary reference line on the funnel 20. When the intersection point of the Z axis (central axis) and RL is connected to the endpoint 17 of the diagonal effective area of ​​the screen to form a straight line, the angle between the straight line and the Z axis is defined as Deflection angle (θ).

[0075] and, Figure 6 The deflection angle (θ) in is half of the actual deflection angle.

[00...

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PUM

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Abstract

In a vacuumized cathode ray tube consisting of a panel and a funnel and including a funnel yoke portion having a non-circular-shaped vertical section, when a diagonal portion thickness on a certain vertical section between a reference line and a neck line is Td and a long side portion thickness at the same vertical section is Th, a glass structure of a cathode ray tube satisfies 0.5 < Th / Td < 1.01, when a diagonal portion thickness at a top of round is Dt', a long side portion thickness is DS', a short side portion thickness is DL'; a diagonal portion thickness at a reference line is Dt, a long side portion thickness is DS, a short side portion thickness is DL; a glass structure of a cathode ray tube satisfies 1.3 ≤ Dt' / Dt < 1.80. Accordingly, because a deflection efficiency and a BSN margin can be simultaneously improved, it is possible to slim down a cathode ray tube, reduce a power consumption thereof and improve a quality and a productivity thereof. In addition, it is also possible to improve impact resistance of a slim type cathode ray tube, reduce a breakage rate in a heating process and prevent explosion in a vacuum exhausting.

Description

field of invention [0001] The present invention relates to a cathode ray tube, and more particularly, to a glass structure of a cathode ray tube, which can improve the deflection efficiency of the cathode ray tube, prevent the occurrence of the BSN phenomenon and effectively reduce the high stress acting on the funnel while improving the deflection efficiency . Background technique [0002] In general, BSN (beam shadow neck) refers to a phenomenon in which a deflected electron beam collides with an inner surface of a yoke portion and leaves a shadow on a screen. [0003] Such as figure 1 As shown, the traditional color cathode ray tube includes: R (red) · G (green) · B (blue) fluorescent surface 40 coated on the inner surface; a screen 10 with an explosion-proof device on the front surface; welded on the screen The funnel 20 at the rear end of the face 10; the electron gun 130 inserted into the neck of the funnel 20 and emitting the electron beam 60; the deflection yoke 50...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J29/07H01J29/86
CPCH01J2229/8609H01J29/861H01J29/07
Inventor 白宰承金瞭享
Owner MERIDIAN SOLAR & DISPLAY