KR0123344Y1 - Mis convergence compensation equipment of deflection yoke - Google Patents

Abstract

This design relates to a misconvergence correction device of a deflection yoke. This design connects horizontal auxiliary coils in parallel to horizontal correction coils connected to horizontal circuit stages to correct convergence, so that the left and right sides may be caused by the wound drum core and winding dispersion. By eliminating inductance-unbalance, the left and right unbalance of the screen can be prevented.

Description

Deflection yoke misconvergence correction device

1 is a schematic front view showing a general deflection yoke.

(A) and (b) of FIG. 2 are internal structure diagrams and circuit diagrams of a conventional misconvergence correction apparatus of a deflection yoke.

(A), (b), (c) and (d) of FIG. 3 are diagrams for explaining misconvergence caused by a conventional horizontal deflection coil.

4 is a circuit diagram showing a misconvergence correction device for a deflection yoke according to the present invention.

* Explanation of symbols for main parts of the drawings

10: deflection yoke 12: neck portion

14 screen 16 coil separator

18: vertical deflection coil 20: ferrite core

23: core clamp 24: convergence correction device

26: terminal boards H1, H2: first and second horizontal deflection coils

H3, H4: first horizontal correction coil H5, H6: second horizontal correction coil

H7: third horizontal auxiliary coil H8: fourth horizontal auxiliary coil

H10: Balance Coil

This design relates to a deflection yoke, more specifically, to minimize unbalance of coil inductance in a horizontal stage in order to compensate for misconvergence generated in a high resolution monitor.

Generally, the deflection yoke 10 used in the cathode ray line (CRT) such as a TV receiver or a monitor is a coil separator including a neck portion 12 and a screen portion 14 as shown in FIG. (Coil-Separator) The horizontal deflection coil (not shown) is wound around the inside of the mounting 16, the ferrite core 20 wound around the vertical deflection coil 18 is assembled by the core clamp 22 As a sawtooth pulse is applied to the horizontal deflection coil and the vertical deflection coil 18, a magnetic field is generated to emit red light from the electron gun (Red: R), green (Green: G), and blue ( Blue: hereinafter referred to as B) A magnetic field is formed to deflect the electron beam in the horizontal and vertical directions. However, in the three-beam electron gun type color monitor, the misconversion phenomenon that the three beams cannot be concentrated in one place occurs due to the error caused by the mechanism of the deflection yoke, the deflection yoke itself, and the radius of curvature of the color receiving tube. .

In other words, as the frequency is increased for high resolution, the field controller is removed from the cathode ray tube, so the green (G) scan is smaller than the red (R) or blue (B) on the screen. Scanning becomes narrow and vertical magnetic field inequality causes red (R) and blue (B) dice not to match exactly.

Therefore, various correction means are used to correct the misconvergence which is generated. However, due to the characteristics of the deflection yoke, fine misconvergence exists at the edge of the screen.

In order to correct the misconvergence phenomenon thus generated, a first horizontal deflection is provided on the right side of the vertical correction coil V1 connected in series to the vertical deflection coil 18 as shown in FIGS. 2A and 2B. The first horizontal correction coils H3 and H4 connected in series to the coil H1 are mounted, and the second horizontal correction coil H2 is connected to the first horizontal deflection coil H2 on the left side of the vertical correction coil V1. Coils H5 and H6 are mounted.

And it is equipped with a correction magnet (M1), (M2) for increasing the inductance (Inductance) of the first and second horizontal correction coil (H3), (H4), (H5), (H6), In the figure, reference numeral H10 denotes a balance coil.

The misconvergence correction device 24 constructed as described above is fixed to the deflection yoke 10 by being assembled to a bobbin and mounted on a terminal board 26 as shown in FIG. .

However, the misconvergence correction device 24 has a magnetic flux generated by the vertical correction coil V1 as shown in FIG. Leakage magnetic flux generated by the direction of V) and the vertical deflection coil 18 ( Since the direction of the VLEAK is assembled to be reversed, the magnetic flux of the vertical correction coil V1 ( V) and leakage flux of the vertical deflection coil 18 VLEAK) is reduced by the difference.

Therefore, the amount of magnetic flux applied to the first and second horizontal correction coils H3, H4, H5, and H6 is reduced, so that the first and second horizontal correction coils H3, H4, and ( H5), the amount of correction by (H6) is reduced, there is a problem that a misconvergence phenomenon in which the colors of R and G spread in the corners of the screen.

The inductance unbalance of the horizontal correction coil wound left and right by the dispersion of the drum cord and the wire winding distribution, for example, the first horizontal correction coil as shown in (b) of FIG. 2. Due to the inductance unbalance generated between (H3) and (H4) and the second horizontal correction coil (H5) and (H6), the phenomenon as shown in (a) and (b) of FIG. 3 is generated. As shown in c) and (d), there was a problem that a misconvergence phenomenon occurred due to unbalance of left and right convergence.

The present invention is to solve the above problems, and an object of the present invention is to provide a misconversion correction device of a deflection yoke capable of minimizing unbalance of coil inductance of a horizontal stage.

Another object of the present invention is to provide a misconversion correction device for a deflection yoke, which can minimize the coil inductance distribution by mounting the auxiliary coils in parallel to the horizontal correction coils. Another object of the present invention is to provide a misconversion correction device for a deflection yoke, which can minimize the coil inductance distribution by mounting the auxiliary coils in parallel to the horizontal correction coils.

This invention for achieving the above object is a vertical correction coil connected in series with a vertical deflection coil, and the first and second mounted on the left and right sides of the vertical correction coil, and connected in series with the first and second horizontal deflection coils, respectively. A misconversion correction device for a deflection yoke, comprising a horizontal correction coil and magnets mounted on both sides of the first and second horizontal correction coils to increase an amount of magnetic flux, wherein the first and second horizontal correction coils are used. It is characterized in that the inductance of the left and right horizontal correction coils are the same by attaching auxiliary coils connected in parallel to the coils, respectively.

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

4 shows a circuit diagram of a device for correcting misconvergence of a deflection yoke according to the present invention. As shown in the same figure, the same code | symbol as (b) of FIG. 2 has the same structure, the same code | symbol is attached | subjected about the same part, and duplication description is abbreviate | omitted.

A third horizontal auxiliary coil (H7) connected in parallel to the first horizontal correction coil (H3), (H4) connected in series here, and the second horizontal correction coil (H5), ( The fourth horizontal auxiliary coil H8 is also connected to H6 in parallel.

This configuration reduces the magnetic flux flowing outward by canceling the magnetic flux generated in the third and fourth horizontal auxiliary coils H7 and H8 with the leakage magnetic flux of the deflection yoke.

Therefore, since the inductance of the left and right horizontal auxiliary coils are the same, the left and right inductance unbalance can be eliminated to prevent misconvergence, a screen left and right unbalance phenomenon.

The misconvergence correction device of the deflection yoke according to the present invention configured as described above is connected to a horizontal circuit stage by connecting another horizontal auxiliary coils in parallel so as to equalize the inductance of the horizontal correction coils wound on the left and right sides. Thus, in the horizontal correction coil for correcting the convergence, the left and right inductance unbalance which may be caused by the wound drum core and the winding distribution may be eliminated, thereby preventing misconvergence, which is a screen left and right unbalance phenomenon.

Claims (1)

A vertical correction coil connected in series with a vertical deflection coil; first and second horizontal correction coils mounted on left and right sides of the vertical correction coil and connected in series with the first and second horizontal deflection coils, respectively; In the misconversion correction device of the deflection yoke, which is mounted on both sides of the first and second horizontal correction coils and is made of a magnet for increasing the amount of magnetic flux, each parallel to the first and second horizontal correction coils. Missing convergence correction device of the deflection yoke, characterized in that the inductance of the left and right horizontal correction coil is the same by attaching the third and fourth horizontal auxiliary coils connected.