JP2001185057A - Cathode ray tube device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display for increasing absolute value of compensation amount of vertical inner pin cushion distortion and having a superior picture quality. SOLUTION: This display includes control coils 11, 14 in which magnetic fields of same polarity are always generated by flowing of vertical deflection current, and a first to a fourth reactor coils 1-4 being disposed at both ends of the control coils 11, 14 to be magnetic coupled with the control coils and being connected to a horizontal coil 8 in series, wherein magnets for generating magnetic field having reversed polarity to the polarity generated from the control coils 11, 14 are arranged at both ends of the control coils 11, 14 through the first to the fourth reactor coils.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for correcting image distortion in a cathode ray tube used for a television or a computer display.

[0002]

2. Description of the Related Art One of the important image qualities of a cathode ray tube is raster distortion. Conventional vertical pincushion distortion and left / right pincushion distortion are optimized by the magnetic field of the deflection yoke and the correction circuit of the display set. However, even if the distortion of the upper, lower, left, and right outer sides is optimized and corrected, pincushion distortion may remain in the middle part of the vertical line, and is referred to as vertical line inner pincushion distortion (FIG. 10).

[0003] Displacement X of the starting position on the flat screen
(T) is proportional to tan θ, where θ is the deflection angle. Therefore, the horizontal deflection amount increases toward the edge of the screen.
Non-linear distortion called character distortion occurs. Since the required correction amount of the S-shaped distortion is inversely proportional to the distance from the center of deflection to each point on the screen, the distance from the center of deflection to the upper and lower rasters of the color cathode ray tube is farther than the center of the raster. The correction amount can be smaller than that in the central part.

[0004] However, the S-shaped distortion correction circuit of the display set optimizes the S-shaped distortion correction in the central portion, but since the above-mentioned consideration is not taken, the S-shaped distortion can be corrected in the upper and lower parts of the raster. This causes vertical line inner pincushion distortion.

On the other hand, in the device disclosed in Japanese Patent Application Laid-Open No. Hei 9-149283, a horizontal deflection current is supplied to a saturable reactor, and a vertical deflection current is modulated. The vertical inner pincushion distortion was corrected by adopting a configuration in which the total inductance was reduced when the peripheral portion was deflected.

The principle of correcting vertical inner pincushion distortion will be described in detail below.

As shown in FIG. 10, the vertical inner pincushion distortion is such that the horizontal deflection extends from the left and right ends toward the center at the time of upper and lower rasters, that is, the maximum vertical deflection in a state where the left and right pincushion distortions are optimized. It is in a state where significant nonlinearity occurs. Therefore, on the horizontal axis of the raster, that is, when there is no vertical deflection, there is a non-linearity such that the horizontal deflection extends from the left and right ends toward the center side, and the upper and lower parts of the raster, that is, the maximum vertical deflection is reversed. The vertical inner pincushion distortion is corrected by a correction device that causes non-linearity such that horizontal deflection is reduced more from the left and right ends toward the center.

The change in inductance of the saturable reactor due to the horizontal deflection current occurs when there is no vertical deflection (IV = 0).
[A]) From the left and right ends, draw a valley bottom curve in which the inductance decreases toward the center (dotted line in FIG. 11),
It functions to cause non-linearity such that horizontal deflection from the left and right ends toward the center extends. Further, when the vertical deflection is maximum at the upper side (IV = 1 [A]), a chevron curve is drawn in which the inductance increases from the left and right ends toward the center (solid line in FIG. 11). It functions to cause non-linearity that shrinks.

The configuration of an example of the saturable reactor and the details of the change in inductance for correcting vertical inner pincushion distortion will be described below.

FIG. 12 shows a configuration diagram of a saturable reactor. At the center of the saturable reactor, a control coil 22 is wound around the core bobbin 100 100 times. It is connected in series to the vertical coil 23 so that the vertical deflection current is passed. First and second left and right adjacent to pick up the magnetic field of the control coil
Two reactor coils 1 and 2 are arranged side by side.
The first and second reactor coils 1 and 2 have the same core and the same number of turns (11 turns in the example), but are connected to the horizontal coil 8 (FIG. 2) and have a horizontal deflection current (maximum 7 [A], minimum -7 [A]). ]) Flow and have opposite polarities. The third and fourth reactor coils 3 and 4 are controlled by the control coil 2.
The first and second reactor coils are arranged on the right side with a symmetrical positional relationship between the first and second reactor coils. The third and fourth reactor coils also have a core, and the number of turns is the first and second reactor coils 1 and 2.
The third and fourth reactor coils are arranged so that the horizontal deflection current flows and the third and fourth reactor coils have opposite polarities. The direction of generation of the magnetic field is in the left-right direction as shown in the figure for both the control coil 22 and the first to fourth coils. At the left end of the first and second reactor coils 1 and 2, a magnet 24 (0.056 [T]) for magnetic bias is arranged with the N pole leftward (ΦMG). At the right end of the third and fourth reactor coils, a magnet 25 (0.056 [T]) for magnetic bias is arranged with the N pole to the right (ΦMG), and the two magnets at both ends are symmetrical to each other. Is in a good positional relationship.

First, consider the case where there is no vertical deflection. First
In addition, the fourth reactor coil is in a magnetic saturation state due to the magnetic bias of the magnet, and causes a change in inductance when a horizontal deflection current flows (hereinafter referred to as LI characteristic). The LI characteristics of the first and second reactor coils 1 and 2 and the total inductance thereof are shown by the dotted lines in FIG. The L-I characteristics of the third and fourth reactor coils and their total inductance are also the same valley curve as the dotted line in FIG. 14 (dotted line in FIG. 15), and the total inductance of the first to fourth reactor coils also draws a valley curve. (Dotted line in FIG. 11).

Next, the vertical deflection upper maximum (IV = + 1)
[A]) is considered. When a vertical deflection current flows through the control coil 22, the N pole generates a magnetic field in the right direction (ΦC solid line). The first and second reactor coils 1 and 2 are control coils 22 for canceling the magnetic bias of the magnet 24.
The magnetic field weakens the magnetic saturation state and increases the inductance as a whole. Accordingly, the total inductance of the first and second reactor coils 1 and 2 draws a mountain curve (solid line in FIG. 14). Third and fourth reactor coils 3,
Reference numeral 4 indicates that the magnetic saturation state is strengthened by the magnetic field (ΦC solid line) of the control coil 22 that increases the magnetic bias of the magnet 25, and the total inductance draws a valley bottom curve (solid line in FIG. 15). As the first to fourth integrated inductances have large changes in the first and second inductances due to the effect of canceling the magnetic bias, the L-I characteristics of the chevron curve (solid line in FIG. 11).

Next, the vertical deflection lower maximum (IV = -1)
[A]) is considered. When the vertical deflection current flows through the control coil 22, the N pole has a leftward magnetic field (a dotted line ΦC).
Generate. The third and fourth reactor coils 3, 4 are control coils 22 for canceling the magnetic bias of the magnet 25.
The magnetic field weakens the magnetic saturation state and increases the inductance as a whole. Therefore, the total inductance of the third and fourth reactor coils 3 and 4 draws a mountain curve (the same as the solid line in FIG. 14). In the first and second reactor coils 1 and 2, the magnetic saturation state is enhanced by the magnetic field (ΦC dotted line) of the control coil 22 that strengthens the magnetic bias of the magnet 24, and the total inductance draws a valley curve (FIG. 15).
The same as the solid line). As the first to fourth integrated inductances, the third and fourth inductance changes due to the effect of canceling the magnetic bias are large, so that the L-
I characteristic (solid line in FIG. 11).

Thus, when there is no vertical deflection,
Maximum vertical deflection (upper, lower) of LI characteristic of valley bottom curve
In the case of (1), the LI characteristic of the chevron curve was obtained, and the vertical inner pincushion correction was realized by this inductance change.

[0015]

However, in a color cathode ray tube having a flat panel surface and a wide deflection angle, the vertical inner pincushion distortion tends to be further increased. In addition to the problem that the inner pincushion distortion remains in a state of insufficient correction, there is a problem that a correction amount for power required for correction is small and correction sensitivity is poor.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and can sufficiently correct vertical inner pincushion distortion even in a color cathode ray tube having a flat panel surface and a wide deflection angle. In addition to providing high image quality, a large correction amount for the power required for correction can be obtained, the correction sensitivity is good, and the load on the circuit set can be reduced.

[0017]

According to a first aspect of the present invention, there is provided a cathode ray tube device comprising a front panel and a funnel, wherein the front panel and the funnel form an envelope, and a fluorescent screen is formed on an inner surface of the front panel. A cathode ray tube device comprising a cathode ray tube in which an electron gun is disposed at a neck portion of the funnel, and a deflection device attached to an outer wall surface of the funnel, wherein the deflection device includes a vertical coil and a horizontal coil. A deflection yoke and a saturable reactor for changing the inductance in response to a change in the horizontal deflection current. The saturable reactor always generates a magnetic field of the same polarity or zero at both ends of the core when a vertical deflection current flows. A first reactor coil wound around a first small core and a second reactor core wound around one end of the control coil. And a third reactor coil wound around a third small core at the other end of the control coil. And a fourth reactor coil wound around a fourth small core are arranged side by side to be magnetically coupled to the control coil,
The first to fourth reactor coils are connected in series with the horizontal coil in the order of a first reactor coil, a second reactor coil, a third reactor coil, and a fourth reactor coil. The first reactor coil and the second reactor coil generate magnetic fields of opposite polarities and the same strength, and the third reactor coil and the fourth reactor coil generate magnetic fields of opposite polarities and the same strength. And a magnet that generates a magnetic field having a polarity opposite to that of the magnetic field generated by the control coil is connected to the first reactor coil, the second reactor coil, the third reactor coil, and the fourth reactor coil. The control coil is disposed at both ends of the control coil via the respective members (claim 1).

According to this configuration, even in a color cathode ray tube having a flat panel surface and a wide deflection angle, the vertical inner pincushion distortion can be sufficiently corrected, and the optimum image quality in the cathode ray tube can be realized by easy means. The sensitivity for correcting vertical inner pincushion distortion is good, and the load on the circuit set can be reduced.

Preferably, the control coil includes one coil wound around one core, and a vertical deflection current rectified by a diode rectifier circuit is supplied to the control coil.

With this configuration, a rectifier circuit can be easily realized.

The control coil comprises two coils of the same polarity wound on one core, and a first control coil of the two control coils is a positive half cycle of the vertical deflection current. Is connected in series with a first diode that passes through
The control coil is connected in series with a second diode that passes a negative half cycle of the vertical deflection current to form a second connection, and the first connection, the second connection, and the resistor Preferably, the body and the body are connected in parallel with each other (claim 3).

With this configuration, the rectification resistance of the rectification circuit can be reduced.

It is preferable that a resistor is connected in parallel to each of the first diode and the second diode.

With this configuration, it is possible to correct vertical line swell of vertical line inner pincushion distortion and left and right pincushion distortion.

[0025]

Embodiments of the present invention will be described below with reference to the drawings.

In the embodiment of the present invention, 46 cm, 10
This is applied to a CRT for a 0 degree deflection complete flat screen type color display. As shown in FIG. 1, the saturable reactor 5 of the present invention is connected to a deflection yoke 6 and is attached to a wiring board 7 of the deflection yoke.

FIG. 2 shows a horizontal deflection system circuit diagram of the deflection yoke. The first, second, third, and fourth reactor coils 1, 2, 3, and 4 are connected in series to a horizontal coil 8, and a horizontal deflection current flows as in the saturable reactor of the related art.

FIG. 3 shows a circuit diagram of a vertical deflection system of the deflection yoke. The smoothing rectifier circuit 9 of the control coils 11 and 14 is connected in series with the vertical coil 10 so that a vertical deflection current flows. The first control coil 11 includes a first diode 12 for passing a positive half cycle of the vertical deflection current.
Are connected in series to form a first connector 13. The second control coil 14 is connected in series with a second diode 15 that passes a negative half cycle of the vertical deflection current,
The second connection body 16 is constituted. Diode 12, 1
5 uses a Schottky diode. A fixed resistor 17 of 4.7 [Ω] is connected in parallel to each of the diodes 12 and 15, and the connection bodies 13 and 16 and 5.87 are connected.
[Ω] is connected in parallel to the fixed resistors 18 to form the smoothing rectifier circuit 9.

FIG. 4 is a block diagram showing one embodiment of the saturable reactor of the present invention, and the details will be described below.

The first control coil 11 and the second control coil 14 are provided at substantially the center of the saturable reactor 5 with the same core bobbin 1.
9 are wound 100 times each. The length of the core bobbin is 17 [mm], and both ends of the core bobbin have a disk shape of Φ14 [mm].

Two first and second reactor coils 1 and 2 are arranged side by side on the left side so as to be magnetically coupled to the control coils 11 and 14. The core bobbins of the reactor coils 1 and 2 are ferrite cores having a length of 10 [mm].
The first and second reactor coils 1 and 2 have the same core and the same number of turns (11 turns in the present embodiment), but are arranged so that a horizontal deflection current flows and the polarities are opposite to each other. Third,
The fourth reactor coils 3 and 4 are disposed on the right side of the control coils 11 and 14 in a symmetrical positional relationship with the first and second reactor coils 1 and 2. The third and fourth reactor coils 3 and 4 also have the same core and the same number of turns as the first and second reactor coils 1 and 2, and the third and fourth reactor coils 3 and 4
Are arranged so as to have opposite polarities.

The direction of the generation of the magnetic field is the horizontal direction of the paper as shown in FIG. 4 for both the first and second control coils and the first to fourth reactor coils.

At the left ends of the first and second reactor coils 1 and 2, a magnet 20 (0.051) for magnetic bias is provided.
[T]) are arranged with the north pole leftward (ΦMG). The magnet 20 has an elliptical column shape (long side 14 [m
m], 7 mm on the short axis side) and 3 mm in height. At the right ends of the third and fourth reactor coils 3 and 4, a magnet 21 (0.051 [T]) for magnetic bias is used.
The poles are arranged leftward (ΦMG). Magnet 2
1 has the same shape and the same magnetization as the magnet 20. When the present invention is compared with the saturable reactor of the prior art, the control coil and the two magnets are different in the polarity direction, and their operations are completely different as described below.

Next, the operation of the saturable reactor of the present invention will be described.

First, consider the case where there is no vertical deflection. First
The L-I characteristics of the first and second reactor coils 1 and 2 and the total inductance thereof are shown by the dotted lines in FIG. 3rd, 4th
The LI characteristics of the reactor coils 3 and 4 and the total inductance thereof also have the same valley curve as the dotted line in FIG. 5, and the total inductance of the first to fourth reactor coils also draws a valley curve (dotted line in FIG. 6).

Next, the vertical deflection upper maximum (vertical deflection current I
V = + 1 [A]). The control coil 11 mainly operates in the smoothing rectification circuit 9 of the control coil, and the N pole generates a rightward magnetic field (ΦC). In the first and second reactor coils 1 and 2, the magnetic saturation state is weakened by the magnetic field (ΦC) of the control coil 11 having the opposite polarity to the magnetic bias of the magnets 20 and 21, and the inductance is increased as a whole. Therefore, the total inductance of the first and second reactor coils draws a mountain curve (solid line in FIG. 4). The third and fourth reactor coils 3 and 4 are also magnets 20 and 2
The magnetic saturation of the control coil A11 that cancels out the magnetic bias of 1 weakens the magnetic saturation state and increases the inductance as a whole. Therefore, the total inductance of the third and fourth reactor coils 3 and 4 draws the same chevron curve (solid line in FIG. 5). As a result, a chevron curve is drawn as the first to fourth total inductances (solid line in FIG. 6).

Unlike the saturable reactor of the prior art, the LI characteristics of the first and second reactors 1 and 2 and the third and fourth reactor coils 3 and 4 coincide with each other, resulting in an added curve. In addition, the height of the chevron curve, that is, the inductance change increases, and the nonlinear effect for correcting vertical inner pincushion distortion increases.

Next, the vertical deflection lower maximum (vertical deflection current I
When V = -1 [A]), the control coil 14 mainly operates in the smoothing rectification circuit 9 of the control coil, and the N pole generates a rightward magnetic field (ΦC). In the first and second reactor coils 1 and 2, the magnetic saturation state is weakened by the magnetic field of the control coil 14 for canceling the magnetic bias of the magnets 20 and 21, and the inductance is increased as a whole. Therefore,
The total inductance of the first and second reactor coils 1 and 2 draws the same mountain-shaped curve as the solid line in FIG. In the third and fourth reactor coils 3 and 4, the magnetic saturation state is weakened by the magnetic field (ΦC) of the control coil 14 having the opposite polarity to the magnetic bias of the magnets 20 and 21, and the inductance is increased as a whole. Therefore, the third and fourth reactor coils 3, 4
Has the same angle curve as the solid line in FIG. As a result, the first to fourth total inductances draw the same chevron curve as in the case of upward deflection (solid line in FIG. 6).

As described above, when there is no vertical deflection, the LI characteristic of the valley bottom curve is obtained, and when the maximum vertical deflection is obtained, the LI characteristic of the chevron curve is large. The correction amount of the pincushion distortion can be greatly increased.

As means for rectifying the vertical deflection current flowing through the control coil, the circuit configuration shown in FIG. 3 is employed.
The number of diodes used can be halved in comparison with the four-wave rectifier diode configuration shown in FIG.

Next, the effects of the smoothing rectifier circuit 9 of the control coils 11 and 14 will be described in detail.

In the present embodiment, the fixed resistor 18 of 5.87 [Ω] adjusts the amount of current flowing into the control coils 11 and 14 and also controls the nonlinearity of the steep vertical deflection system up to diode switching. Screen noise is suppressed. That is, if the fixed resistance 18 is too large, the deflection in the vicinity of the center of the screen in the vertical deflection current stops until diode switching is performed, and a large current flows after the switching, so that the shading appears in the image signal along the horizontal axis. .

The 4.7 [Ω] fixed resistor 17 connected in parallel to the diodes 12 and 15 functions as an adjusting mechanism for smoothly performing diode switching.

That is, if the fixed resistor 17 is set too large, the inductance of the saturable reactor rapidly changes before and after the diode switching, causing undulation in a vertical line as shown in FIG.

Therefore, if the fixed resistors 17 and 18 are not provided, the vertical inner pincushion distortion correction amount increases, but the image quality is deteriorated as described above. Become
Can be realized.

The following table shows the inner pincushion correction amount and the additional inductance (ΔL) of the saturable reactor with the smoothing rectifier circuit of the present invention and the saturable reactor of the prior art.

The inner pincushion distortion was measured at two locations, 1/2 and 3/4 of the horizontal display raster size. The additional inductance ΔL is the total inductance of the first to fourth reactor coils of the saturable reactor when no current is simply added, and at the same time means the coefficient of the power consumption of the saturable reactor in the horizontal deflection power.

[0048]

[Table 1]

From these results, it can be demonstrated that the amount of correction of the inner pincushion distortion at a constant power consumption (correction amount / ΔL) can be increased to about 1.6 times or more of the saturable reactor with the smoothing rectifier circuit of the present invention as compared with the prior art. are doing. The saturable reactor with a smoothing rectifier circuit has a final performance of 1/2 inner pincushion distortion of 2.2 compared with no correction.
From 4 [mm] to 0.67 [mm], and 3/4 inner pincushion distortion from 2.22 [mm] to 0.7
[Mm] can be reduced to a level without any problem.

FIG. 9 shows a curve in which the horizontal axis represents the number of turns of one reactor coil and the vertical axis represents the amount of inner pincushion distortion correction. Conventional saturable reactor (dotted line)
However, while the limit value of the amount of correction of the inner pincushion distortion is small, that of the saturable reactor with a smoothing rectifier circuit of the present invention (solid line) is large. This is because when the vertical deflection is at the maximum, the first and second saturable reactors with a smoothing rectifier circuit of the present invention are used.
The total inductance of the reactor coil and the total inductance of the third and fourth reactor coils together increase the number of turns to form a large angle-shaped LI characteristic, and two LI characteristics of the same shape are added to the total integrated inductance. And make a bigger chevron curve. On the other hand, in the conventional saturable reactor, the shape of the total inductance of the first and second reactor coils and the shape of the total inductance of the third and fourth reactor coils are emphasized by increasing the number of turns in each of a chevron curve and a valley bottom curve. , The sum of the total added inductances is due to curves that cancel each other out.

The above-mentioned three control coils are provided.
Although the saturable reactor according to the above has been described, the configuration according to claim 2 having one control coil as shown in FIG. 16 may be adopted. In this case, the smoothing rectifier circuit 9 uses four diodes shown in FIG.

[0052]

As described above, according to the image distortion correcting apparatus of the present invention, the vertical inner pincushion distortion can be sufficiently corrected even in a color cathode ray tube having a flat panel surface and a wide deflection angle. The optimum image quality can be realized by easy means, the sensitivity for correcting the vertical inner pincushion distortion is good, and the load on the circuit set can be reduced.

[Brief description of the drawings]

FIG. 1 is an external view of a saturable reactor according to the present invention attached to a deflection yoke.

FIG. 2 is a connection diagram of a horizontal coil and first to fourth reactor coils according to the present invention.

FIG. 3 is a connection diagram of a vertical coil and a smoothing rectifier circuit of the present invention.

FIG. 4 is a diagram for explaining a configuration of a saturable reactor according to claim 3 of the present invention.

FIG. 5 is a diagram for explaining a current change (LI characteristic) of the total inductance of the first and second reactor coils of the saturable reactor according to the present invention.

FIG. 6 shows first to fourth saturable reactors according to the present invention.
Of the total inductance of the reactor coil (L-
Diagram for explaining I characteristic)

FIG. 7 is a diagram for explaining a diode configuration of four-wave rectification;

FIG. 8 is a diagram for explaining vertical line undulations;

FIG. 9 is a diagram illustrating a relationship between the number of turns of a reactor coil and a vertical inner pincushion distortion correction amount. (A) A diagram illustrating a case of 1/2 inner pincushion distortion. (B) A diagram illustrating a case of 3/4 inner pincushion distortion. Figure

FIG. 10 is a view for explaining vertical inner pincushion distortion.

FIG. 11 is a diagram for explaining a current change (LI characteristic) of total inductance of first to fourth reactor coils of a conventional saturable reactor.

FIG. 12 is a diagram for explaining a configuration of a conventional saturable reactor.

FIG. 13 is a wiring diagram of a conventional vertical coil.

FIG. 14 shows a current change (LI characteristic) of the total inductance of the first and second reactor coils of the conventional saturable reactor.
Diagram for explaining

FIG. 15 shows a current change (LI characteristic) of the total inductance of the third and fourth reactor coils of the conventional saturable reactor.
Diagram for explaining

FIG. 16 is a view for explaining a configuration of a saturable reactor according to claim 2 of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 1st reactor coil 2 2nd reactor coil 3 3rd reactor coil 4 4th reactor coil 5 saturable reactor 8 horizontal coil 9 smoothing rectification circuit 10 vertical coil 11 1st control coil 12, 15 diode 13th 1 connection body 14 second control coil 16 second connection body 17 fixed resistance 18 fixed resistance 19 core bobbin 20, 21 magnet

Claims (4)

[Claims] 1. A cathode ray tube comprising a front panel and a funnel, wherein an envelope is formed, a phosphor screen is formed on an inner surface of the front panel, and an electron gun is disposed on a neck portion of the funnel. A cathode ray tube device comprising: a deflection device mounted on a wall; wherein the deflection device includes a deflection yoke including a vertical coil and a horizontal coil, and a saturable reactor that changes an inductance with respect to a change in a horizontal deflection current. The saturable reactor has a control coil that always generates a magnetic field of the same polarity or 0 at both ends of the core when a vertical deflection current flows, and a first small coil is provided at one end of the control coil. A first reactor coil wound around a core and a second reactor coil wound around a second small core are magnetically coupled to the control coil side by side. A third reactor coil wound around a third small core and a fourth reactor coil wound around a fourth small core are provided on the other end side of the control coil.
Are arranged so as to be magnetically coupled to the control coil side by side, and the first to fourth reactor coils are the horizontal coil, a first reactor coil, and a second reactor coil. , A third reactor coil and a fourth reactor coil are connected in series in this order, and the first reactor coil and the second reactor coil generate magnetic fields of opposite polarities and the same strength, The third reactor coil and the fourth reactor coil generate magnetic fields of opposite polarities and the same strength, and a magnet that generates a magnetic field of a reverse polarity to the magnetic field generated by the control coil is provided in the first reactor. A coil and the second reactor coil, a third reactor coil and a fourth reactor coil, respectively, to both ends of the control coil. Cathode ray tube apparatus characterized by being arranged, respectively. 2. The control coil according to claim 1, wherein the control coil includes one coil wound around one core, and a vertical deflection current rectified by a diode rectifier circuit flows through the control coil. The cathode ray tube device as described in the above. 3. The control coil comprises two coils of the same polarity wound on one core, and a first control coil of the two control coils is a positive half cycle of the vertical deflection current. And a second control coil is connected in series with a second diode that passes a negative half cycle of the vertical deflection current. The cathode ray tube device according to claim 1, wherein a second connection body is formed, and the first connection body, the second connection body, and the resistor are connected in parallel with each other. 4. The cathode ray tube device according to claim 3, wherein a resistor is connected to each of the first diode and the second diode in parallel.