KR100452047B1 - Electrode of electron gun for color water pipe - Google Patents

Abstract

The present invention relates to an electrode of an electron gun for a color water pipe, and includes a focusing electrode and an accelerating electrode formed at one end thereof so that the openings are formed to face each other and the openings are opposed to each other to form an electrostatic lens, and the focusing electrode and the accelerating electrode. Installation holes formed on the upper and lower surfaces of the mutually installed openings, and both ends are vertically bent downward to form a partition piece, and the partition piece is fitted through the installation hole, respectively, and separately partitioned the opening to form an electron non-pass through hole. Consists of a focusing correction electrode to form a to improve the astigmatism problem and to easily fix the focusing electrode to the installation hole formed in the focusing electrode and the acceleration electrode to weld to facilitate the assembly work and to increase the working speed.

Description

Electrode of electron gun for color water pipe

The present invention relates to an electron gun of a color water tube, and more particularly, it is possible to easily fix the focusing electrode to the focusing electrode used to prevent the astigmatism during operation of the electron gun to prevent the conventional astigmatism occurrence prevention function The present invention relates to an electrode of a color water pipe electron gun, which can perform a conventional process and at the same time shorten a work process and reduce a production cost.

In general, the pixel formation of the color image tube includes an electron gun 1 which generates an electron beam and sends it to the screen 3 to form a pixel, as shown in FIG. 1, and an image on the front surface of the screen 3 by deflecting the electron beam. Is formed by the deflecting device 2, and the size of the pixel formed on the screen 3 during the formation of the pixel is determined by the electron beam emitted from the electron gun 1, so that the characteristics of the electron gun 1 This will have a significant impact on the resolution of the color receiver.

The electron gun 1 is composed of a heater 4 and a cathode 5, and the first, second, third and fourth grids 6, 7, 8 and 9, and the cathode 5 is the heater 4. When heated by), the heated cathode 4 emits hot electrons in front thereof and the emitted hot electrons are accelerated toward the screen 3 by the potential applied to the second grid 7, and these hot electron beams It is focused by the electrostatic lens 40 formed between the grid 8 and the fourth grid 9 to form small pixels on the screen 3.

FIG. 2 is a partially cutaway perspective view illustrating an electrode of a conventional electron gun, and as shown in FIG. 2, an opening having a horizontal shape on an opposite surface of the focusing electrode 10 and the acceleration electrode 20 forming the electrostatic lens 40. 80 is formed. In this structure, astigmatism occurs because the electron beam focusing force in the horizontal direction becomes weaker than the focusing force in the vertical direction.

In order to correct such astigmatism, the focusing correction electrodes 11 and 21 are installed inside the focusing electrode 10 and the accelerating electrode 20.

The focusing correction electrodes 11 and 21 are generally electrode plates having a plurality of electron beam passing holes 30 and are fused and fixed to face each other in the focusing electrode 10 and the accelerating electrode 20.

In the electrode of the conventional electron gun, the focusing force of the focusing electrode and the accelerating electrode is changed when the focusing correction electrode is installed and the installation state of the focusing correction electrode is installed in the process of fusion-fixing the focusing correction electrode inside the focusing electrode. Since the focus characteristic of the deterioration of the focusing correction electrode requires careful attention and high precision, the cost required for assembling increases and also requires a separate jig has been a problem that the work speed is also greatly reduced.

In order to solve this problem, the electrode of the present invention for the color receiving tube gun is formed so that the horizontal openings are formed at one end and the openings are opposed to each other to form a capacitive electrode and an acceleration electrode to form an electrostatic lens, and the focusing electrode And mounting holes formed on the upper and lower surfaces of the openings on which the accelerating electrodes are opposed to each other, and both ends are vertically bent downward to form partitions. Consists of a focusing correction electrode that forms a non-passing hole to improve the astigmatism problem, and to fix the focusing correction electrode simply by fitting it to the focusing electrode and the accelerating electrode and welding to facilitate assembly work and increase the working speed. The technical problem is to provide an electrode of an electron gun.

In order to achieve the above technical problem, the electrode of the color gun tube electron gun of the present invention comprises a focusing electrode and an acceleration electrode which is formed so that the horizontal openings are formed at one end and the openings are opposed to each other to form an electrostatic lens;

The installation holes are formed on the upper and lower surfaces of the opening and the focusing electrode and the acceleration electrode respectively opposed to each other, and both ends are vertically bent downward to form a partition piece, and the partition piece penetrates the installation hole and is respectively fixed to separate the opening. It is composed of a focusing correction electrode that is partitioned to form an electron beam passing hole.

Hereinafter, the electrode of the color water pipe electron gun according to the present invention will be described in more detail with reference to the drawings.

3 is an exploded perspective view illustrating an electrode of an electron gun according to the present invention, and as shown in FIG. 3, one side end of the focusing electrode 50 and the acceleration electrode 60 forming the electrostatic lens 10 face each other. It is installed in the front and rear, so that the opposite ends of the focusing electrode 50 and the acceleration electrode 60 is formed with a horizontal opening 80 and a pair of upper and lower surfaces spaced apart by a predetermined interval in each end The installation holes 90 are each drilled.

Inside the opening 80 of the focusing electrode 50 and the accelerating electrode 60, a '∩' shaped focusing correction electrode 70 is installed, respectively, and the focusing correction electrode 70 has a plate shape having a predetermined width. Each side end is vertically bent downward to form a partition piece 75, and the partition piece 75 penetrates through the installation hole 90 formed on the upper surface of the focusing electrode and the acceleration electrode 50, 60. Lower ends of the partition pieces 75 are fitted into the installation holes 90 formed in the lower surface, respectively.

The bottom surface of the central portion of the focusing correction electrode 70 is welded and fixed while being interviewed with the top surfaces of the focusing electrode and the acceleration electrode 50 and 60.

Opposite ends of the focusing electrode and the accelerating electrode 50 and 60 are separated and partitioned by both partition pieces 75 of the focusing correction electrode 70 fixed to the focusing electrode and the accelerating electrode 50 and 60. Three electron beam through holes 85 are formed, and the electron beams emitted from the cathode through the electron beam through holes 85 pass through and are focused.

4 is an exploded perspective view showing another embodiment of the electron gun according to the present invention. As shown in FIG. 4, upper and lower surfaces of the opposing openings 80 of the focused focusing electrode and the accelerating electrode 50 'and 60' are installed. The pair of installation grooves 95 are cut out from the opening 80 and cut out by a predetermined interval, respectively.

The installation groove 95 is a rod-shaped rod having a predetermined diameter, the both ends of which are vertically bent downward, and the focusing correction electrode 70 ′ formed in a '∩' shape from the front of the opening 80. The upper surface is welded and fixed by being inserted into the inner side of 95.

Thus, three electron beam passing holes are formed at opposite ends of the focusing electrode and the accelerating electrode 50 'and 60' separated by the focusing electrode 70 '.

As described in detail above, the electrode of the color gun electron gun of the present invention is fixed between the focusing electrode and the accelerating electrode by the focusing correction electrode, the R, G, B between the horizontal and vertical beams respectively by the rod-shaped electrode surrounding the three electron beams It is possible to correct the astigmatism by inverting the astigmatism in the horizontal direction with respect to each of R, G, and B and weakening it in the vertical direction to generate the reverse astigmatism.

1 is a side view and enlarged cross-sectional view showing a schematic configuration of a color water pipe,

2 is a partially cutaway perspective view illustrating an electrode of a conventional electron gun;

3 is an exploded perspective view showing an electrode of an electron gun according to the present invention;

Figure 4 is an exploded perspective view showing another embodiment of the electron gun according to the present invention.

Explanation of symbols on the main parts of the drawings

Electron gun sphere 2 .... deflector

3 .... screen 50,50 '.... focusing electrode

60,60 '.... Acceleration electrode 70,70' .... Concentration correction electrode

75 .... Section 80 .... Opening

90 .... Installer 95 .... Installation groove

Claims (2)

In the electrode of a color image tube electron gun composed of a plurality of electrodes for emitting an electron beam from the cathode to the screen side, Focusing and accelerating electrodes 50 and 60 formed at one end thereof with horizontal openings 80 formed so that the openings 80 are opposed to each other to form an electrostatic lens, and the focusing electrode and accelerating electrode ( 50 and 60, respectively, the installation hole 90 formed on the upper and lower surfaces of the opening 80, which are opposite to each other, and both ends are vertically bent downward to form a partition piece 75, the partition piece 75 is Electrode of the color water pipe electron gun, characterized in that it consists of a focusing correction electrode 70 for forming the electron non-pass through hole by separating and partitioning the opening 80 to penetrate through the installation hole 90, respectively. . The electrode of the color gun tube gun according to claim 1, wherein the installation hole is cut out by a predetermined distance from one end of the upper and lower surfaces of the opening (80).

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