KR20040093828A - An apparatus for correcting mis-convergence of deflection yoke - Google Patents

Abstract

PURPOSE: A miss-convergence correcting apparatus of a deflection yoke is provided to have no influence on the change of a screen when varying an YH correction unit. CONSTITUTION: First and second coma-free coils(CF1,CF2) are connected in series to a middle tap region of a vertical deflection coil. First and second diodes(D3,D4) are connected in parallel to both ends of the first and second coma-free coils and arranged reversely with each other. A first resistor(R8) is connected in series to a connection point of the first and second diodes and restricts current flowing to the first and second diodes. A second resistor(R9) is connected in parallel to both ends of the first and second coma-free coils.

Description

An apparatus for correcting mis-convergence of deflection yoke}

The present invention relates to an apparatus for correcting misconvergence of a deflection yoke, and more specifically, by separating a coma precoil connected to a YH correction part of a deflection yoke and connecting it to a center tab of a vertical deflection coil, The present invention relates to a misconvergence correction device for a deflection yoke in which the change of the screen is not affected even when it is variable.

In general, deflection yokes used in cathode ray tubes (CRT) of TV receivers or monitors have deflection yokes for accurately deflecting RGB tricolor beams scanned from the electron gun to the fluorescent film applied to the screen surface of the cathode ray tubes. The yoke is the most important component of the cathode ray tube magnetic device, and serves to deflect the electron beam emitted from the electron gun so that an electric signal transmitted in time series can be reproduced as an image on the screen of the cathode ray tube.

That is, since the electron beam emitted from the electron gun goes straight onto the screen by the high voltage, only the central phosphor of the screen emits light, so the deflection yoke is deflected to reach the screen in the order of scanning from the outside. The yoke forms a magnetic field to accurately deflect the electron beam to the fluorescent film applied to the screen of the cathode ray tube by using a force that is changed when the electron beam passes through the magnetic field and its traveling direction is changed.

Such a deflection yoke flows current through two coils arranged at right angles to the neck portion of the cathode ray tube to form a magnetic field, and deflects the electron beam by using the law of framing. The deflection yoke has a horizontal deflection coil mounted to the left / right side of the inner circumferential surface of the separator having a substantially trumpet shape, and a vertical deflection coil is mounted to the left / right side of the outer peripheral surface. Typically, a deflection yoke is installed inside a coil separator to generate a pincushion type magnetic field in a vertical direction, and a pair of horizontal deflection coils installed between a coil separator and a ferrite core to produce a barrel type magnetic field in a horizontal direction. It includes a pair of vertical deflection coils for generating a, and the horizontal deflection coils are subjected to a sawtooth current of 15.75 ㎑ to deflect the electron beam from side to side. In addition, the vertical deflection coil flows a sawtooth current of 60 mA to deflect the electron beam up and down. By combining these two coils, the electron beam is sequentially scanned from the upper left to the lower right on the screen.

Hereinafter, a deflection yoke according to the related art will be described with reference to the accompanying drawings.

1 is a view showing that the deflection yoke according to the prior art is mounted on the cathode ray tube.

As shown in FIG. 1, the deflection yoke 2 is installed in the neck portion 5 of the cathode ray tube 1, and according to the winding structure of the coil, a saddle-saddle as shown in FIGS. 2A and 2B is illustrated. Saddle) type deflection yoke, and Saddle-Toroidal type such as FIGS. 3A and 3B. The deflection yoke 2 deflects the electron beam emitted from the RGB electron gun 4 installed in the neck portion 5 of the cathode ray tube 1 in the left / right and up / down directions so that the deflection yoke 2 is precisely positioned on the fluorescent surface of the cathode ray tube 1. It serves to collide with the location. That is, the deflection yoke 2 is located in the neck portion 5 of the cathode ray tube 1 and deflects three electron beams scanned from the RGB electron gun 4 into a fluorescent film coated on the screen surface of the cathode ray tube 1. Let's go.

2A and 2B are longitudinal and cross-sectional views, respectively, of a saddle-saddle deflection yoke according to the prior art.

2A and 2B show a conventional saddle-saddle deflection yoke, in which a saddle-shaped horizontal deflection coil 9 is installed above and below the inner circumferential surface of the screen portion of the coil separator 6 of conical shape. A saddle-shaped vertical deflection coil 7 is installed on the left and right sides of the outer circumferential surface, and has a substantially cylindrical ferrite core on the outer circumferential surface of the screen portion of the coil separator 6 to reinforce the magnetic field of the vertical deflection coil 7. (8) is provided. In addition, coma-free coils 3 are installed around the neck outer circumference of the coil separator 6 to correct the coma generated by the vertical deflection coil 7.

3A and 3B are longitudinal cross-sectional views and cross-sectional views, respectively, of the saddle-toroidal deflection yoke according to the prior art, and FIG. 4 shows the electrical connection relationship of the vertical deflection coil in the saddle-toroidal deflection yoke according to the prior art of FIG. 3A. It is a circuit diagram.

3A and 3B show a conventional saddle-toroidal deflection yoke, in which horizontal deflection coils 9 are provided above and below the inner circumferential surface of the screen portion of the coil-shaped separator 6, and a substantially cylindrical ferrite is provided on the outer circumferential surface. A core 8 is provided, and a toroidal vertical deflection coil 11 is wound on upper and lower sides of the ferrite core 8. In addition, coma-free coils 3 are provided around the neck outer circumferential surface of the coil separator 6 to correct the coma generated by the vertical deflection coil 11. The vertical deflection coil 11 is mechanically wound on the upper and lower portions of the ferrite core 8.

In addition, the vertical deflection coil 11 is electrically upper left 11a-1, lower left 11a-2, upper right 11b-1, and lower right 11b- as shown in FIG. 2) are connected in series.

In the saddle-saddle deflection yoke as shown in Figs. 2A and 2B, the magnetic field of the left and right sides depends on the relative dispersion of the left vertical deflection coil 7a and the right vertical deflection coil 7b and / or the magnitude of the relative amount of current. Differences occur, which causes miss-convergence and geometric distortion (G / D) on the screen.

Similarly, in the saddle-toroidal deflection yoke as shown in FIGS. 3A and 3B, the vertical deflection coil 11a wound on the upper left and lower left sides with respect to the XY axis and the vertical deflection coil 11b wound on the upper right and lower sides. Differences in the magnetic fields on the left and right sides occur depending on the relative scatter and / or magnitude of the amount of current, resulting in misconvergence and geometric distortion (G / D) on the screen.

Hereinafter, misconvergence and geometric distortion (G / D) will be described in more detail with reference to FIGS. 1 to 3.

2B and 3B, the coil separator 6 is provided with horizontal deflection coils 9 above and below the inner circumferential surface of the screen portion, and is vertical along the left and right sides of the outer circumferential surface or above and below the ferrite core 8. The deflection coils 7 and 11 are wound. That is, the horizontal deflection coil 9 is configured to be in close contact with the inner surface at the connecting portion of the coil separator 6 to form a horizontal deflection magnetic field.

The vertical deflection coils 7 and 11 are wound to form a vertical deflection magnetic field while being in close contact with the outer surface of the coil separator 6 according to the type of the deflection yoke 2 or the coil separator 6. It is configured to be wound along the upper side and the lower side of the ferrite core 8 provided on the outer circumferential surface.

In addition, the coil separator 6 is provided with a ferrite core 8 having a substantially cylindrical shape on the outer circumferential surface, and the ferrite core 8 serves to strengthen the vertically deflected magnetic field.

However, in such a conventional deflection yoke 2, the ferrite core 8 in which the vertical deflection coils 7 and 11 are wound around the outer circumferential surface of the coil separator 6 on which the horizontal deflection coil 9 is mounted is wound on the coil separator. In the process of bonding to the outer circumferential surface of (6), there was a problem that the flow is generated by the dimensional dispersion of the ferrite core 9 and the winding dispersion of the vertical deflection coils 7 and 11.

That is, the ferrite core 8 flows from the coil separator 6 to the left and right directions even by a slight external impact, so that the vertical deflection coils 7 and 11 are not accurately coaxially positioned, and distortion on the screen is generated. Cause problems.

Therefore, the conventional deflection yoke 2 has a difference in the left and right magnetic fields according to the relative winding distribution of the vertical deflection coils 7 and 11 or the magnitude of the relative amount of current, thereby causing misconvergence and geometric distortion on the screen. (G / D) occurs.

The type of misconvergence can be subdivided into 1) Landing error, 2) Geometric Distortion error, and 3) VCR distortion. The characteristics of each type of misconvergence are briefly described as follows.

First, the landing error refers to misconvergence in which three electron beams R, G, and B scanned from the electron gun are not accurately scanned at each pixel on the screen, and are scanned from each pixel to the center of the screen or to the edge of the screen. In other words, it means a misconvergence of a narrowed state or a widened state.

In addition, the geometric distortion error is a state in which the three electron beams (R, G, B) are scanned on the screen is out of the upper and lower sides of the screen, or the center of the screen is scanned so that the electron beam is not scanned at the edge. It refers to the misconvergence of, and refers to the misconvergence of the barreled or pinned state.

Finally, the VCR distortion means that of the three electron beams (R, G, B), the red beam (R) and the blue beam (B) are accurately scanned on the screen, while the green beam (G) is accurately scanned on each pixel of the screen. In other words, it means misconvergence that error occurs in the vertical direction.

5A to 5C are diagrams for explaining the YV misconvergence pattern on the screen, FIG. 6 is a diagram showing the YHC misconvergence pattern on the screen, and FIGS. 7A to 7C are diagrams for geometric distortion (G / D) patterns on the screen. It is a figure for demonstrating.

This misconvergence can be divided into YV misconvergence and YHC misconvergence. The YV misconvergence is shown in FIGS. 5A and 5B. Deviating vertical misconvergence. 5C illustrates a normal case in which the left magnetic field and the right magnetic field operate in the same manner.

In addition, YHC misconvergence refers to horizontal misconvergence in which the vertical line R and the vertical line B cross | intersect, as shown in FIG.

In addition, the G / D refers to a state in which the screen is not normal and is distorted as shown in FIGS. 7A and 7B. In particular, FIGS. 7A and 7B show trapezoid distortion. FIG. 7A shows the left-right treatment G / D pattern generated by the right magnetic field acting stronger than the left magnetic field, FIG. 7B shows the left-hand treatment G / D pattern generated by the force of the left magnetic field stronger than the right magnetic field, and FIG. It shows a normal G / D pattern in which the magnetic field and the right magnetic field act in the same way.

8 is a YV misconvergence correction circuit diagram of a saddle-saddle deflection yoke according to the prior art.

FIG. 8 is a YV misconvergence correction circuit of the conventional saddle-saddle deflection yoke shown in FIGS. 2A and 2B, in which a left vertical deflection coil 7a and a right vertical deflection coil 7b are electrically connected in series. A differential type sorting circuit composed of two fixed resistors R1 and R2 and a variable resistor YV VR is connected in parallel to the left and right vertical deflection coils 7a and 7b.

In the conventional YV misconvergence correction circuit as shown in FIG. 8, the resistance value of the variable resistor (YV VR) is variably adjusted to adjust the relative amount of current flowing through the left vertical deflection coil 7a and the right vertical deflection coil 7b, respectively. By adjusting the magnetic field, the YV misconvergence as shown in FIG. 5A or 5B is adjusted to match the R line and the B line as shown in FIG. 5C.

9 is a YV misconvergence correction circuit diagram of the conventional saddle-toroidal deflection yoke shown in FIGS. 3A and 3B. The upper left vertical piece coil 11a-1, the lower left vertical piece coil 11a-2, and the upper part are shown in FIG. The right vertical deflection coils 11b-1 and the right vertical deflection coils 11b-2 are sequentially connected in series, and are wound on the vertical deflection coils 11a and the upper and lower sides wound on the upper left and lower left sides. A differential type sorting circuit composed of two fixed resistors R1 and R2 and a variable resistor YV VR is connected in parallel to the vertical deflection coil 11b.

The conventional YV misconvergence correction circuit of FIG. 9 has a vertical deflection coil 11a wound on the upper left and lower left sides by variably adjusting the resistance value of the variable resistor YV VR, similarly to the YV misconvergence correction circuit of FIG. 8. ) And YV misconvergence as shown in FIG. 5A or 5B by adjusting the relative magnetic field of the left and right sides by adjusting the relative amount of current flowing through the vertical deflection coils 11b wound on the upper and lower sides, respectively. Adjust to match B line.

However, in the saddle-saddle type and / or the saddle-toroidal type, when correcting the YV misconvergence using the variable resistor (YV VR), the vertical deflection coil 7a or 11a positioned on the left side and the position on the right side are used. Since the convergence pattern and the G / D pattern change simultaneously with the change of the left and right magnetic fields due to the change in the relative amount of current flowing through the vertical deflection coils 7b or 11b respectively, even if the YV misconvergence is corrected, the new G / D There was a problem that occurred.

In addition, even if the variable resistance (YV VR) is not varied, there is a problem that the G / D also occurs due to the difference in the dispersion of the left and right vertical deflection coils that may occur during winding of the deflection coils. That is, since it is substantially very difficult for coils wound on the upper limit of 1 to 4 of the XY axis to form a perfect symmetrical magnetic field due to the dispersion of the windings due to the coil unevenness and mechanical assembly, the unbalanced scattering may be applied to FIG. 5A. Alternatively, even if the misconvergence is completely corrected as shown in FIG. 5B, G / D may be generated as shown in FIG. 7A or 7B, and even if the G / D is completely corrected as shown in FIG. 7C, the misconvergence as shown in FIG. 5A or 5B may occur. Therefore, the conventional YV misconvergence correction circuit as shown in Figs. 9 and 10 has a problem in that the misconvergence and the G / D cannot be simultaneously corrected as in Figs. 5C and 7C.

FIG. 10 is a view for explaining the relationship between CV (Con Vertical) and S3V for evaluating the quality of the deflection yoke, and illustrates an S3V point corresponding to the vertical component of the S3 point among the S1, S2, and S3 points on the screen. In addition, with S3V, the CV (Coner Vertical) point is used as an evaluation unit for evaluating the quality of the deflection yoke. In practice, the deflection yoke should be limited in misconvergence such that the variation in CV is within 1 mm and the variation in S3V is within 0.5 mm.

11 is a circuit diagram of a misconvergence correction apparatus for a deflection yoke according to the related art, and the conventional misconvergence correction apparatus includes a G / D corrector 10, a YH corrector 30, and a YHC corrector 40. ) Are connected in series with each other, where VC1 to VC4 represent a vertical deflection coil, YV VR represents a variable resistor, R1 to R4 represent a fixed resistance, and the first capacitor C1 and the third resistor R3, and the second The capacitor C2 and the fourth resistor R4 form a ringing filter. CF1 to CF6 represent comapricoils, and YH VR and YHC VR represent YH misconvergence correction variable resistors and YHC misconvergence correction variable resistors, respectively.

However, in the conventional misconvergence correction apparatus of the deflection yoke, since the first and second comaprior coils CF1 and CF2 are connected to the YH correction unit 30, the change of the screen is affected every time the YH circuit is changed. There is a circuit problem that a screen phenomena occurs in the center.

An object of the present invention for solving the above-mentioned problems is to provide a misconvergence correction device of a deflection yoke in which the change of the screen is not affected even when the YH correction unit is variable.

1 is a view showing that the deflection yoke according to the prior art is mounted on the cathode ray tube.

2A and 2B are longitudinal and cross-sectional views, respectively, of a saddle-saddle deflection yoke according to the prior art.

3A and 3B are longitudinal and cross-sectional views, respectively, of a saddle-toroidal deflection yoke according to the prior art.

FIG. 4 is a circuit diagram illustrating an electrical connection relationship of a vertical deflection coil in a saddle-toroidal deflection yoke according to the related art of FIG. 3A.

5A to 5C are diagrams for describing a YV misconvergence pattern on a screen.

6 is a diagram illustrating a YHC misconvergence pattern on a screen.

7A to 7C are diagrams for describing a geometric distortion (G / D) pattern on a screen.

8 is a YV misconvergence correction circuit diagram of a saddle-saddle deflection yoke according to the prior art.

9 is a YV misconvergence correction circuit diagram of a saddle-toroidal deflection yoke according to the prior art.

10 is a view for explaining the relationship between the CV (Coner Vertical) and S3V for evaluating the quality of the deflection yoke.

11 is a circuit diagram of a misconvergence correction apparatus for a deflection yoke according to the prior art.

12 is a circuit diagram of an apparatus for correcting misconvergence of a deflection yoke according to the present invention.

FIG. 13 is a detailed circuit diagram of FIG. 12.

14 is a view showing a winding portion of the coma-free coil of the misconvergence correction apparatus of the deflection yoke according to the present invention.

15A and 15B are diagrams illustrating changes in screens when the conventional and the present invention are applied, respectively.

Explanation of symbols on the main parts of the drawings

7a: left vertical deflection coil 7b: right vertical deflection coil

11a-1: Upper left vertical deflection coil 11a-2: Lower left vertical deflection coil

11b-1: right upper vertical deflection coil 11b-2: right lower vertical deflection coil

10: G / D correction unit 30: YH correction unit

40: YHC correction unit R1 to R9: resistance

YV VR, YH VR, YHC VR: Variable resistor

As a means for achieving the above object, the deflection yoke misconvergence correction device according to the present invention comprises: a) first and second coma-free coils (CF1, CF2) connected in series to the middle tap region of the vertical deflection coil; b) first and second diodes D3 and D4 connected in parallel to both ends of the first and second comafree coils CF1 and CF2 connected in series and disposed in opposite directions; c) a first resistor (R8) connected in series with the connection points of the first and second diodes (D3, D4) to limit the current flowing through the first and second diodes (D3, D4); And d) a second resistor R9 connected in parallel to both ends of the first and second comafree coils CF1 and CF2 connected in series.

Here, the first and second coma prim coils (CF1, CF2) is separated from the YH misconvergence correction unit is characterized in that it is independently switched by the first and second diodes (D3, D4).

In addition, when the current flowing through the first and second coma primitive coils CF1 and CF2 passes a predetermined level, the current is turned off and the amount of current changes at an operating point of the first and second diodes D3 and D4. It is characterized in that the vertical magnetic field component is positive (+) at the CV (Coner Vertical) point.

In addition, the deflection yoke according to the present invention comprises: a) a coil separator having a neck portion and a screen portion; b) horizontal deflection coils provided above and below the inner surface of the screen portion of the coil separator; c) vertical deflection coils provided on the left and right sides of the outer surface of the screen portion of the coil separator; d) a ferrite core installed on an outer circumferential surface of the screen portion of the coil separator to reinforce the magnetic field of the vertical deflection coil; e) comafree coils installed in the neck portion of the coil separator to be electrically connected to the vertical deflection coil; And f) adjusting the vertical misconvergence on the screen by adjusting the relative magnetic fields on the left and right sides by controlling the relative amount of current flowing through the comapri coils located on the left side and the comapri coils located on the right side of the comapri coils. And a first and second coma-free coils connected to a YH misconvergence correction unit of the misconvergence correction circuit to be connected to a center tab of the vertical deflection coil to control switching. It features.

As a result, according to the present invention, the Comapri coil connected to the YH correction unit of the deflection yoke is disconnected and connected to the middle tap of the vertical deflection coil, and the diodes D3 and D4 connected in reverse parallel to each other are connected to the resistors R8 and R9. By controlling the switching, that is, by connecting in parallel with the comapri coil configured in the YH correction unit, it is possible to improve the misconvergence of the screen center caused by the variable time of the YH correction unit.

Hereinafter, with reference to the accompanying drawings, the configuration and operation of the misconvergence correction apparatus of the deflection yoke according to the embodiment of the present invention will be described.

12 is a circuit diagram of an apparatus for correcting misconvergence of a deflection yoke according to the present invention, and FIG. 13 is a detailed circuit diagram of FIG. 12. In the embodiment according to the present invention, a saddle-toroidal deflection yoke is described as an example, but is not limited thereto. The same applies to the saddle-saddle deflection yoke.

12 and 13, the misconvergence correction apparatus of the deflection yoke according to the present invention includes a G / D correction unit 100, a YHC correction unit 40, and a first YH correction unit 30a. The second YH corrector 30b is included in the G / D corrector 100. That is, the conventional YH correction unit is separated into the first YH correction unit 30a and the second YH correction unit 30b.

The G / D corrector 100 includes vertical deflection coils VC1 to VC4, first and second fixed resistors R1 and R2, G / D correction resistor YV VR, and third resistor R3. The first ringing filter made of the first capacitor (C1), the second ringing filter made of the fourth resistor (R4) and the second capacitor (C2), the first and second comma-free coils (CF1, CF2), the diode (D3) , D4) and resistors R8 and R9, and more specifically, the YH misconvergence correction unit 30b according to the present invention includes a) first and second serially connected to the middle tap region of the vertical deflection coil. 2 comapri coils CF1 and CF2; b) diodes D3 and D4 connected in parallel to both ends of the first and second comafree coils CF1 and CF2 connected in series and disposed in opposite directions; c) a resistor (R8) connected in series with the connection points of the diodes (D3, D4) to limit the current flowing through the diodes (D3, D4); And d) resistors R9 connected in parallel to both ends of the first and second comafree coils CF1 and CF2 connected in series.

In this case, the first and second coma prim coils CF1 and CF2 are separated from the YH misconvergence corrector and independently switched by the first and second diodes D3 and D4. Substantially, the current flowing through the first and second coma primitive coils CF1 and CF2 is turned off after a predetermined level, so that the amount of current is changed at an operating point of the first and second diodes D3 and D4. At the above CV (Coner Vertical) point, the vertical magnetic field component is positive (+).

In the operation of the correction circuit 30b configured as described above, when the current scanning the upper side flows, the current flows in the first and second coma-free coils CF1 and CF2 until a constant current value increases, and then a predetermined level has passed. Afterwards, the current flows only toward the diodes D3 and D4 so that the deflection coil is turned off at a certain point. Therefore, at the CV point after a certain point, the vertical magnetic field component is relatively pinned (+). Here, the predetermined level refers to an operating point determined by the internal resistance of the diodes D3 and D4 and the resistor R8 connected in series with the diodes D3 and D4.

On the other hand, the deflection yoke according to the present invention, a) a conical coil separator having a neck portion and a screen portion; b) horizontal deflection coils respectively provided on the upper side and the lower side of the inner surface of the screen part of the coil separator; c) vertical deflection coils respectively provided on the left and right sides of the outer surface of the screen portion of the coil separator; d) a ferrite core installed on an outer circumferential surface of the screen portion of the coil separator to reinforce the magnetic field of the vertical deflection coil; e) a coma for canceling the barrel magnetic field generated by the vertical deflection coil by being installed in the neck portion of the coil separator to be electrically connected to the vertical deflection coil to generate a pin-cushion magnetic field. Free coils; f) for adjusting the vertical misconvergence on the screen by adjusting the relative magnetic fields on the left and right sides by controlling the relative amount of current flowing through the comapri coils located on the left side and the comapri coils on the right side of the comapri coils. A first convergence coil and a second comma-free coil connected to a YH misconvergence correction unit of the misconvergence correction circuit are connected to a center tab of the vertical deflection coil to control switching.

FIG. 14 is a view showing a winding portion of a coma-free coil of a misconvergence correction device of a deflection yoke according to the present invention, wherein first and second coma-free coils CF1 are formed on the hatched portions of the vertical deflection coils VC1 to VC4. , CF2) will be wound. Typically, the vertical deflection coils VC1 to VC4 take dual windings connected to start and final terminals, respectively, and separate the coma-preil coils of the YH correction unit to separate the vertical deflection coils VC1 to VC4. The windings are wound at both ends of the portion where the window of VC4 is formed, and the switching thereof is controlled using a diode as described above.

15A and 15B are diagrams illustrating changes in screens when the conventional and the present invention are applied, respectively, and FIG. 15A shows a screen in which misconvergence occurs according to the related art, and FIG. 15B shows misconvergence in accordance with the present invention. Each shows an improved screen. That is, in the conventional deflection yoke, the misconvergence occurring at the CV and S3V points is improved, so that the change amount of the CV can be limited to within 1 mm and the change amount of the S3V to within 0.5 mm.

While the invention has been shown and described in connection with specific embodiments thereof, it will be appreciated that various modifications and changes can be made without departing from the spirit and scope of the invention as indicated by the claims. Anyone who owns it can easily find out.

The misconvergence correction apparatus of the deflection yoke according to the present invention can improve productivity and quality of the deflection yoke by not being affected by the change of the screen even when the YH correction unit is variable.

Claims (6)

a) first and second comafree coils CF1 and CF2 connected in series to the middle tap region of the vertical deflection coil; b) first and second diodes D3 and D4 connected in parallel to both ends of the first and second comafree coils CF1 and CF2 connected in series and disposed in opposite directions; c) a first resistor (R8) connected in series with the connection points of the first and second diodes (D3, D4) to limit the current flowing through the first and second diodes (D3, D4); And d) a second resistor R9 connected in parallel to both ends of the first and second comafree coils CF1 and CF2 connected in series; Misconvergence correction device of the deflection yoke comprising a. The method of claim 1, Missing deflection yoke, characterized in that the first and second coma pre-coil (CF1, CF2) is separated from the YH misconvergence correction unit and is independently switched by the first and second diodes (D3, D4). Convergence Compensator. The method of claim 1, When the current flowing through the first and second comafree coils CF1 and CF2 passes a predetermined level, the current is turned off, and the amount of current changes at an operating point of the first and second diodes D3 and D4, thereby providing CV (at least a predetermined point). Coner Vertical) Misconvergence correction device of the deflection yoke, characterized in that the vertical magnetic field component is positive (+) at the point. a) coil separator having neck portion and screen portion; b) horizontal deflection coils provided above and below the inner surface of the screen portion of the coil separator; c) vertical deflection coils provided on the left and right sides of the outer surface of the screen portion of the coil separator; d) a ferrite core installed on an outer circumferential surface of the screen portion of the coil separator to reinforce the magnetic field of the vertical deflection coil; e) comafree coils installed in the neck portion of the coil separator to be electrically connected to the vertical deflection coil; And f) for adjusting the vertical misconvergence on the screen by adjusting the relative magnetic fields on the left and right sides by controlling the relative amount of current flowing through the comapri coils located on the left side and the comapri coils on the right side of the comapri coils. Misconvergence correction circuit Including; And the first and second comma-free coils connected to the YH misconvergence correction unit of the misconvergence correction circuit are connected to a center tab of the vertical deflection coil so that switching is controlled. The method of claim 4, wherein The misconvergence correction circuit, First and second comafree coils CF1 and CF2 connected in series to the middle tab of the vertical deflection coil; First and second diodes D3 and D4 connected in parallel to both ends of the first and second coma prim coils CF1 and CF2 connected in series and disposed in opposite directions; A first resistor (R8) connected in series with the connection points of the first and second diodes (D3, D4) to limit the current flowing through the first and second diodes (D3, D4); And A second resistor R9 connected in parallel to both ends of the first and second comafree coils CF1 and CF2 connected in series; Deflection yoke including. The method of claim 4, wherein When the current flowing through the first and second comafree coils CF1 and CF2 passes a predetermined level, the current is turned off to change the amount of current at the operating points of the first and second diodes D3 and D4. Deflection yoke characterized in that the vertical magnetic field component is positive (+) at.