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Color cathode-ray tube

A cathode ray tube, color technology, applied in the direction of cathode ray tube/electron beam tube, discharge tube, electrical components, etc., can solve the problems of wrong color matching, increased manufacturing cost, waste of spring retainer, etc., to reduce false landings Effect

Inactive Publication Date: 2003-07-16
MERIDIAN SOLAR & DISPLAY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] However, according to the structure of this cathode ray tube, in the process of repeatedly inserting / detaching the spring from the fixing pin of the panel, color matching errors due to positional deviation still often occur, and since in order to make the welding point safe and reliable, Spring retainers require additional material causing unnecessary waste and increased manufacturing costs

Method used

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  • Color cathode-ray tube
  • Color cathode-ray tube
  • Color cathode-ray tube

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Embodiment Construction

[0033] Referring to the details of the preferred embodiments of the present invention, the embodiments will be described in conjunction with the accompanying drawings. Wherever possible, the same reference numerals (numbers) are used throughout the drawings to refer to the same or like parts.

[0034] Figure 4 is a perspective view of a generally shaped screen frame assembly according to the invention.

[0035] The screen frame assembly includes a main frame body 7 and a lower frame 8 connected with the main frame body 7 . A shadow mask 3 is installed on the frame body, and a spring holder 10 is welded on the frame body. A spring 9 is mounted on the spring holder 10 via two or more welding points 16a and 16b. The spring 9 has a free end with a spring hole 9a into which a fixing pin 15 of the screen is inserted.

[0036] The electron beam 6 emitted from an electron gun 13 is deflected to a specific direction by a deflection coil 5 shown in FIG. 1 , and then passes through t...

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PUM

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Abstract

A colour cathode ray tube comprises a mask-frame assembly and a panel portion assembled together by fastening a fixing pin formed on an inner surface of the panel, into a spring hole formed on one end portion of a spring. The other end portion of the spring is fixed to the mask-frame assembly at two or more junction points, either directly or through a spring holder, such that the condition 5.0<(A / B)xW<=8.0 is satisfied, where A(cm) is the distance between the centre of the spring hole and the center of the junction point closest to the spring hole, B(cm) is the distance between the centre of the junction points closest and furthest from the spring hole, and W(kg) is the shared weight of the mask-frame assembly exerted on each spring supporting the mask-frame assembly.

Description

[0001] This application claims priority from Korean Patent Application No. P2002-00286 filed on Jan. 3, 2002, which is hereby incorporated by reference. technical field [0002] The invention relates to a color cathode ray tube, in particular to the structure of a fastening screen frame assembly for the color cathode ray tube. Background technique [0003] 1 is a schematic partial view of a conventional color cathode ray tube, and FIG. 2 is a sectional view of a panel of the color cathode ray tube of FIG. 1. Referring to FIG. [0004] Referring to Fig. 1, a common color cathode ray tube includes a screen plate 1 as a front glass, a funnel-shaped funnel 2 which is fixed to the rear glass of the screen plate 1, and an inner surface of the screen plate 1. A fluorescent film (screen) 4 is formed, an electron gun which is an emission source of an electron beam 6 irradiated to the fluorescent film 4, a shadow mask 3 for guiding the electron beam to the fluorescent film 4 correspon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J29/02H01J29/07
CPCH01J29/073H01J29/02
Inventor 李载彧
Owner MERIDIAN SOLAR & DISPLAY