KR0137179Y1 - Mis-convergence compensation equipment of deflection yoke - Google Patents

Abstract

The present invention relates to a mis-convergence correction device, and the bobbin and the magnets of the mis-convergence correction device can be fastened by screw assembly means, and the magnets can be moved from side to side by using a hexagonal wrench or the like on an adjustment groove formed at one end of the magnet. I would.

Therefore, since the inductance mismatch of the first and second horizontal correction coils generated by the magnetic field of the vertical correction coil is adjusted by the magnet, the inductance mismatch between the first and second horizontal correction coils can be effectively compensated without installing a separate magnetic body. As a result, the assembly process is simple, and the optimum point of the left and right horizontal deflections can be easily found, thus making it possible to achieve high definition.

Description

Misconvergence correction device of deflection yoke

1 is a front view of a general deflection yoke.

2 is a plan view of a misconvergence correction apparatus of a conventional deflection yoke.

3 is a circuit diagram of a misconvergence correction apparatus of a deflection yoke.

4 is a plan view of the misconvergence correction apparatus of the deflection yoke according to the present invention.

* Explanation of symbols for main parts of the drawings

DY: Deflection yoke VC: Vertical deflection coil

HC: Horizontal deflection coil LI: Vertical correction coil

L2, L3: First and second horizontal correction coil M1, M2: First and second magnet

15,25 Bojin 21,22,23 Drum core

24: Male thread 26: Female thread

27: hexagonal hole

This invention relates to the misconvergence correction device of the deflection yoke, and more particularly, it is possible to move the magnet which affects the magnetic flux density of the vertical and horizontal correction coils that correct the misconvergence of the deflection yoke to the left and right effectively. A misconvergence correction device for deflection yoke that can be corrected.

In general, a cathode yoke (CRT) such as a TV receiver or a monitor is equipped with a deflection yoke for deflecting an electron beam emitted from an electron gun, so that the electron beam is scanned in a predetermined manner to form a fire. As the size of the screen increases, the plane becomes smaller, the pixels become smaller, and the thickness of the CRT becomes thinner, the importance of the misconvergence correction device for correcting the misconvergence of the deflection yoke in order to obtain a high resolution is increased.

Deflection Yoak (DY) is a pair of horizontal deflection coils (not shown: HC) inside the coil separator 13 including the neck portion 11 and the screen portion 12 as shown in FIG. Is mounted, a pair of vertical deflection coils (VC) is mounted to the outside of the coil separator 13, the terminal board 14 for connection with the misconductor distortion correction device is formed on one side.

Therefore, scanning positions on the screen of the red (R), green (G) M and blue (B) electron beams emitted from the electron gun as the sawtooth wave is applied to the vertical and horizontal deflection coils VC and HC to form a magnetic field. Will be determined.

At this time, the horizontal and vertical correction to correct a misconvergence phenomenon in which the R, G, and B beams deflected by the horizontal deflection coil HC and the vertical deflection coil VC of the deflection yoke DY do not coincide with each pixel. The coils HC, VC have horizontal and vertical correction coils, respectively.

A vertical correction coil L1 connected in series to a pair of vertical deflection coils VC connected in parallel is connected to the drum core as shown in FIGS. 2 and 3 showing a plan view and a circuit diagram of a conventional deflection yoke misconvergence correction device. The first and second horizontal correction coils L2 and L3, which are wound and connected in series with the left and right horizontal deflection coils HC, are respectively wound around the drum core and installed on both sides of the vertical correction coil L1. It is.

In addition, the first and second magnets M1 and M2 for removing the leakage magnetic fields of the first and second horizontal correction coils L2 and L3 are one side of the first and second horizontal correction coils. Installed in In addition, the vertical correction coil (L1), the first and second horizontal correction coils (L2, L3) and the first and second magnets (M1, M2) are fixed in the cylindrical bobbin (15) and the deflection yoke (DY) Is mounted on the outside.

In the conventional misconvergence correction apparatus described above, the vertical correction coils L1, the first and second horizontal correction coils L2, and L3 wound on the drum core form magnetic fields with each other to affect each other's magnetic fields. If a current flows through the vertical correction coil L1, an inductance mismatch occurs in the first and second horizontal correction coils L2 and L3 by the magnetic field at that time, and the left and right horizontal deflection coils are caused by the inductance mismatch. Due to the magnetic field mismatch of the HCs, it is difficult to find the optimal point of the horizontal deflection, which makes it difficult to achieve high definition.

In addition, the vertical correction coil (L1) and the first and second horizontal correction coils (L2), (L3) is a deflection yoke (DY) or beam beam (To compensate for inductance inconsistencies, because the inductance is fixed at the manufacturing stage and the amount of correction is constant) There is a complicated problem in the assembly process, such as additionally installing a suitable inductance magnetic material on the outside.

Therefore, the purpose of this design is to effectively compensate for the inconductance mismatch of horizontal correction coils by vertical correction coil of misconvergence correction device without installing a separate magnetic body, simplifying the assembly process, and easily optimizing the optimum point of horizontal left and right. It provides a misconvergence correction value for deflection yokes that can be found and fixed.

In order to achieve the above object, the present invention is a vertical correction coil wound in a drum core and connected in series with a vertical deflection coil, and installed on both sides of the vertical correction coil and wound on a drum core to a left and right horizontal deflection coil. First and second horizontal correction coils connected in series and first and second magnets installed on both sides of the first and second horizontal correction coils, respectively. The deflection yoke misconvergence correction device is characterized in that the first and second magnets are screw-assembled on both inner walls of the bobbin to allow left and right movement of the first and second magnets.

Hereinafter, the misconvergence correction apparatus of the deflection yoke according to the present invention will be described in detail with reference to the accompanying drawings.

4 is a plan view of the misconvergence correction apparatus according to the present invention, the circuit of which is the same as that of FIG. A vertical correction coil L1 connected in series to a pair of upper and lower vertical deflection coils VC connected in parallel to each other is wound around the first drum core 21 and in series with the left and right horizontal deflection coils HC. The first and second horizontal security coils L2 and L3 connected to each other are wound around the second and third drum cores 22 and 23 and installed at both sides of the first drum core 21.

In addition, the first and second magnets M1 and M2 for removing leakage magnetic fields of the first and second horizontal security coils L2 and L3 are the first and second drum cores 22 and 23. A male screw 24 is formed on the outer walls of the first and second magnets M1 and M2.

In addition, the vertical correction coil (L1), the first and second horizontal correction coil (L2, L3) is fixed in the cylindrical bobbin 25, the inner side walls of the bobbin 25, the first and second Screw bones 26 formed in the outer wall of the magnets M1 and M2 and the external thread 24 swept together to allow the first and second magnets M1 and M2 to move left and right. ) Is formed.

In addition, a hexagonal hole 27 penetrating the center of the first and second magnets M1 and M2 is formed, and the first and second magnets M1 and M2 are formed using a hexagonal wrench. The inductance of the first and second horizontal correction coils can be matched by moving along the screw valleys 26. The hexagonal holes 27 may be formed in grooves, such as straight or cross-shaped, on the outer surfaces of the magnets.

As described above, this design allows the magnets to move from side to side by fastening bobbins and magnets of the misconvergence correction device with screw assembly means, and using hexagonal wrenches and the like on the adjusting groove formed at one end of the magnet, the magnets are left and right. It was moved to. Therefore, this design adjusts the inductance of the first and second horizontal correction coils caused by the magnetic field of the vertical correction coil to the magnet, so that the inductance of the first and second horizontal correction coils can be effectively avoided without installing a separate magnetic material. The assembly process is simple because it can compensate for the inconsistency, and the optimum point of the horizontal deflection of the left and right sides can be easily found, so that the fineness can be fixed.

Claims (1)

The first and second horizontal correction coils, which are wound on the drum core and connected in series with the vertical deflection coil, are installed on both sides of the vertical correction coil, and are wound on the drum core and connected in series to the left and right horizontal deflection coils, respectively. In the misconvergence correction apparatus of a deflection yoke, in which a coil and first and second magnets provided at both ends of the first and second horizontal correction coils are respectively provided in the bobbin, the first and second magnets are provided on both inner walls of the bobbin. Misconvergence correction device of the deflection yoke so that the second magnet is screwed, the adjustment groove is formed in the central axis of the first and second magnets to rotate the first and second magnets to move left and right.