JP3409829B2 - Deflection yoke, color cathode ray tube device and display device using the deflection yoke - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention uses a deflection yoke used in combination with a color cathode ray tube that generates an in-line array of multiple electron beams, a color cathode ray tube device using this deflection yoke, and this color cathode ray tube device. The present invention relates to a display device, and more particularly, to a deflecting device having convergence correction means.

[0002]

2. Description of the Related Art A deflection device provided with a convergence correction means in an in-line type cathode ray tube device is disclosed in Japanese Patent Application Laid-Open Nos. 3-247093 and 3-82290. By connecting a pair of diodes to the lower side correction coil in opposite directions and connecting an impedance element between the diodes, the vertical line bow misconvergence is corrected.

As shown in FIG. 6 (c), the convergence correction means in these deflecting devices has a pattern in which the vertical line misconvergence amount increases in an arc shape as the position changes from the screen middle portion to the screen vertical direction. Is configured to correct.

[0004]

Therefore, the conventional convergence correction means provides a sufficient correction effect for a misconvergence pattern in which the directions of misconvergence are opposite between the middle part of the screen and the upper and lower parts of the screen. I can't show it.

An object of the present invention is to enable correction of misconvergence of vertical lines in which correction directions are opposite in the vicinity of the middle part of the screen and in the upper and lower parts of the screen, and at the same time the correction amount of the bow-shaped misconvergence component can be adjusted. To do.

[0006]

The present invention provides a color cathode ray tube having a horizontal deflection coil, a main vertical deflection coil, upper and lower auxiliary vertical deflection coils, and an electron gun for generating multiple electron beams in an in-line arrangement. In a deflection yoke used in combination, a first series circuit in which a first resistor is connected in series to the upper auxiliary vertical deflection coil and a second resistor in series to the lower auxiliary vertical deflection coil are connected in series. When a parallel circuit in which the second series circuit is connected in parallel is connected to the main vertical deflection coil in series and the vertical deflection current flows in parallel to the first resistor in the first direction at a first value or more. And a second shunt circuit that conducts when the vertical deflection current flows in a direction opposite to the first direction when the vertical deflection current is greater than or equal to a second value larger than the first value. Connect and said second A third shunt circuit which is conducted in parallel with the resistor when the vertical deflection current is equal to or more than the first value and flows in the opposite direction to the first direction; and the vertical deflection current is equal to or more than the second value. A fourth shunt circuit, which conducts when flowing in the first direction, is connected, a variable resistor is connected to the first to fourth shunt circuits, and the first and the fourth resistors are adjusted by adjusting the variable resistor. The current flowing through the shunt circuit No. 3 and one of the currents flowing through the second and fourth shunt circuits are increased, and the other current is decreased.

Specifically, the variable resistor is provided with first and second fixed terminals and a variable terminal, and the first fixed terminal of the variable resistor is connected to the first and third shunt circuits. Then
A second fixed terminal is connected to the second and fourth shunt circuits, and a variable terminal is connected to the connection point side of the first resistor and the second resistor.

Further, the first and third shunt circuits each include a diode having a first forward conduction voltage, and the second and fourth shunt circuits each include the first forward conduction voltage. A diode having a larger second forward conduction voltage is included.

A temperature compensating circuit composed of a resistor and a thermistor is connected between the connection point of the first and second resistors and the connection point of the first to fourth shunt circuits.

With such a circuit structure, when the vertical deflection current is equal to or more than the first value and flows in the first direction, the first shunt circuit is made conductive so that the upper auxiliary vertical deflection coil has the lower auxiliary vertical deflection coil. A current larger than the first value, and when the vertical deflection current is equal to or more than the first value and flows in the direction opposite to the first direction, the third shunt circuit is turned on to connect the lower auxiliary vertical deflection coil. It is possible to pass a larger current than that of the upper auxiliary vertical deflection coil, and thus it is possible to correct the misconvergence of the vertical line near the middle portion of the screen.

Further, when the vertical deflection current is made to flow in the first direction at a second value larger than the first value, the fourth shunt circuit is turned on to make the lower auxiliary vertical deflection coil have the upper auxiliary vertical deflection coil. When a current larger than that of the deflection coil is passed, and when the vertical deflection current is equal to or more than the second value and flows in the direction opposite to the first direction, the second shunt circuit is made conductive to cause the upper auxiliary vertical deflection coil to flow. It is possible to pass a larger current than the lower auxiliary vertical deflection coil, and this makes it possible to correct vertical line misconvergence in the upper and lower parts of the screen in the opposite direction to the vertical line misconvergence near the middle part of the screen. .

Furthermore, by adjusting the variable resistor, one of the currents flowing through the first and third shunt circuits and one of the currents flowing through the second and fourth shunt circuits is increased and the other is decreased. As a result, the vertical line misconvergence near the middle of the screen becomes larger than the vertical line misconvergence at the upper and lower edges of the screen, while maintaining a substantially constant correction amount for the B-shaped misconvergence component. The bow-shaped misconvergence component of can be adjusted.

[0013]

DETAILED DESCRIPTION OF THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 2 is a partially cutaway side view of a color cathode ray tube device having a deflection yoke according to the present invention, and FIG. 3 is a view of the deflection yoke as viewed from the rear. The same components are designated by the same reference numerals. 1 is a deflection yoke,
Horizontal deflection coil 2, main vertical deflection coil 3, main core 4, separator 5, sub-cores 6a and 6b, auxiliary vertical deflection coil 7
It is provided with a and 7b and a terminal cover 8. 9 is an electron gun, 10
Is a static convergence magnet, 11 is a color cathode ray tube, and 12 is a fluorescent screen.

The deflection yoke 1 has a fluorescent screen 12 on the front surface thereof, and the neck portion of a color cathode ray tube 11 to which an electron gun 9 for generating an in-line array of multiple electron beams is attached at the rear end of the rear neck portion. Attached to. The main core 4 made of a magnetic material is arranged around the horizontal deflection coil 2 and the main vertical deflection coil 3 of the deflection yoke 1. Further, an upper auxiliary vertical deflection coil 7a and a lower auxiliary vertical deflection coil 7b, which are U-shaped magnetic bodies and are vertically opposed to each other, are wound and provided on the electron gun 9 side of the deflection yoke 1.

FIG. 4 is a block diagram of a display device using the color cathode ray tube device according to the present invention.
This display device includes a video circuit 30, a horizontal deflection circuit 31, a vertical deflection circuit 32, a high voltage circuit 33, and the like. Video signal input terminal 27, horizontal sync signal input terminal 2
8 and a signal corresponding to the vertical synchronizing signal input terminal 29 are input, so that the video circuit 30 and the horizontal deflection circuit 3
1, the vertical deflection circuit 32 and the high voltage circuit 33 operate respectively. Then, the horizontal deflection circuit 31 supplies a horizontal deflection current I _H to the horizontal deflection coil 2 to generate a horizontal deflection magnetic field, and the vertical deflection circuit 32 causes the main vertical deflection coil 3 and the upper and lower auxiliary vertical deflection coils 7a and 7b. The vertical deflection current I _V is supplied to generate a vertical deflection magnetic field, and the video circuit 3
The electron beam generated in the color cathode ray tube 11 is deflected from the electron gun 9 by being controlled to 0.

FIG. 5 shows a vertical deflection magnetic field generated by the auxiliary cores 6a and 6b, the upper auxiliary vertical deflection coil 7a and the lower auxiliary vertical deflection coil 7b. In FIG. 5, 1
9B, 19G and 19R are electron beams corresponding to the respective colors B, G and R, 20 is a vertical deflection magnetic field, 21B, 21G and 21R.
Is a deflection force acting on each electron beam 19B, 19G, 19R.

FIG. 6 shows a misconvergence pattern. In the figure, 12 is a phosphor screen, 24B is a blue vertical line, 24R is a red vertical line, and the green vertical line is not shown.

FIG. 6A shows a misconvergence pattern to be corrected by the present invention. This Figure 6
In the misconvergence pattern shown in (a), the blue vertical line 24B and the red vertical line 24R intersect from the middle of the screen to the upper and lower ends of the screen. This misconvergence pattern has a B-shaped misconvergence pattern in which the misconvergence is large in the middle part of the screen as shown in FIG. 6B, and the misconvergence at the upper and lower ends of the screen as shown in FIG. 6C. This corresponds to a composite of a large bow-shaped misconvergence pattern.

FIG. 1 is a circuit diagram of a first embodiment of a deflecting device according to the present invention for correcting misconvergence of a pattern as shown in FIG. 6 (a). This circuit is incorporated in the deflection yoke 1 and includes a main vertical deflection coil 3, an upper auxiliary vertical deflection coil 7a, a lower auxiliary vertical deflection coil 7b, resistors 14a to 14e, a potentiometer type variable resistor 15a, and a diode 18a to. 18d.

A resistor 1 is provided in the upper auxiliary vertical deflection coil 7a.
4a are connected in series to form a first series circuit, a resistor 14b is connected in series to the lower auxiliary vertical deflection coil 7b to form a second series circuit, and the first series circuit and the first series circuit are connected to each other. The two series circuits are connected in parallel to form a parallel circuit. And
The vertical deflection coil 3 is connected to the connection point of the resistor 14a and the resistor 14b to form the parallel circuit and the series circuit. Further, the resistor 14a includes a resistor 14c and a diode 18
The first shunt circuit composed of a and the second shunt circuit composed of the resistor 14d and the diode 18b are connected in parallel. Further, the resistor 14b includes a resistor 14c and a diode 18
The third shunt circuit consisting of c and the fourth shunt circuit consisting of the resistor 14d and the diode 18d are connected in parallel.

Here, the diodes 18a and 18c use elements having a lower forward conduction voltage (barrier voltage) than the diodes 18b and 18d. In addition, the diode 18
a and 18d are connected in such a polarity that the vertical deflection current _IV flows in the direction shown by the arrow in FIG. 1 and conducts when the electron beam is deflected upward, and the diodes 18b and 18c are connected.
Is connected to such a polarity that the vertical deflection current _IV flows in the direction opposite to the direction shown by the arrow in FIG. 1 and becomes conductive when the electron beam is deflected downward.

Further, one fixed terminal of the variable resistor 15a is connected to the connection point of the diodes 18a and 18c, and the variable resistor 15 is connected to the connection point of the diodes 18b and 18d.
The other fixed terminal of a is connected and the variable resistor 15
The variable terminal of a is connected to the connection point of the resistors 14a and 14b via the resistor 14e.

According to such a circuit configuration, when a slight vertical deflection current I _V is supplied in the direction shown by the arrow in FIG. 1, the first shunt circuit including the diode 18a having a low forward conduction voltage becomes conductive. By the upper auxiliary vertical deflection coil 7a
A current larger than that flowing through the lower auxiliary vertical deflection coil 7b flows through each of the electron beams 19B and 19B, as shown in FIG.
A downwardly convex magnetic field 20 is formed in the vicinity of G and 19R, and the electron beam 19B, so as to correct the misconvergence in which the blue vertical line 24B is shifted to the left with respect to the red vertical line 24R in the middle portion on the upper side of the screen. Deflection forces 21B and 21 acting on 19R
Generate R. Further, when the vertical deflection current I _V becomes large and the upper part of the screen is deflected, the fourth shunt circuit is conducted, and when the upper part of the screen is deflected, the lower auxiliary vertical deflection coil 7b is provided with the upper auxiliary vertical deflection coil. A current larger than that of the coil 7a is passed, and contrary to FIG. 5A, a magnetic field 20 having an upwardly convex shape near the electron beams 19B, 19G, and 19R.
And the blue vertical line 24B is the red vertical line 24 at the top edge of the screen.
A deflection force acting on the electron beams 19B and 19R is generated so as to correct the misconvergence which is shifted to the right with respect to R.

Then, when a slight vertical deflection current I _V is supplied in the direction opposite to the direction shown by the arrow in FIG. 1, the third shunt circuit including the diode 18c having a low forward conduction voltage becomes conductive, whereby A larger current than the upper auxiliary vertical deflection coil 7a flows through the lower auxiliary vertical deflection coil 7b,
As shown in FIG. 5B, the electron beams 19B, 19G,
An upwardly convex magnetic field 20 is formed near 19R, and the electron beams 19B and 19R are adjusted so as to correct the misconvergence in which the blue vertical line 24B shifts to the left with respect to the red vertical line 24R in the middle part on the upper side of the screen. The acting deflection forces 21B and 21R are generated. Further, when the vertical deflection current I _V is increased and the lower side of the screen is deflected, the second shunt circuit is conducted, and when the lower end of the screen is deflected, the upper auxiliary vertical deflection coil 7a is connected to the lower auxiliary vertical deflection coil 7a. A current larger than that of the deflection coil 7b is supplied, and contrary to FIG. 5B, a downwardly convex magnetic field 20 is formed near the electron beams 19B, 19G, and 19R, and a blue vertical line is formed at the lower end of the screen. The deflection force acting on the electron beams 19B and 19R is generated so as to correct the misconvergence in which the line 24B shifts to the right with respect to the red vertical line 24R.

According to such a correction characteristic, as shown in FIG.
As shown in, it is possible to correct misconvergence in which the directions are different between the middle part and the upper and lower ends of the screen.

Furthermore, if the variable resistor 15a is adjusted to reduce the resistance value between the variable terminal of the variable resistor 15a and the fixed terminals of the first and third shunt circuits, for example,
And the current flowing through the third shunt circuit increases, and the current flowing through the second and fourth shunt circuits decreases. Therefore, if the resistance values of the resistors 14c, 14d, and 14e are set appropriately, the B-shaped misconvergence component that causes a large vertical line misconvergence near the middle of the screen as shown in FIG. While keeping the correction amount substantially constant, as shown in FIG.
It is possible to reduce the bow-shaped misconvergence component of the vertical line as shown in FIG.

FIG. 6 (d) shows a misconvergence pattern that can be corrected in this way.
The difference in misconvergence shown in FIGS. 6 (a) and 6 (d) is due to the difference in the magnitude of the vertical line-shaped arc-shaped misconvergence component as shown in FIG. 6 (c) which is caused by a manufacturing error. According to this embodiment, the misconvergence due to such a manufacturing error can be corrected by the variable resistor 15a.

The correction operation in this embodiment as described above will be described with reference to the current waveform shown in FIG. The vertical deflection current I _V has a sawtooth waveform as shown in FIG.
FIG. 7B shows a current Ib flowing through the lower auxiliary vertical deflection coil 7b and a current I flowing through the upper auxiliary deflection coil coil 7a.
The difference current (a-Ia) of a is shown. Then, this difference current (Ib-Ia) can be decomposed into a difference current component I1 as shown in FIG. 7C and a difference current component I2 as shown in FIG. 7D. Therefore, the difference current component I1 as shown in FIG. 7C can correct the misconvergence component of the B-shaped vertical line as shown in FIG. 6B, and FIG. The differential current component I as shown in
2 can correct the misconvergence component of the arcuate vertical line as shown in FIG. 6 (c). And
By adjusting the variable resistor 15a, the difference current component I2 shown in FIG. 7 (d) can be changed without changing the difference current component I1 shown in FIG. 7 (c).
An arcuate vertical line as shown in FIG. 6C that changes due to manufacturing error while maintaining the correction amount of the misconvergence component of the B-shaped vertical line as shown in FIG. It is possible to correct the misconvergence component of the above, and correct the vertical line misconvergence in the middle part of the screen and the top and bottom parts of the screen.

FIG. 8 is a circuit diagram of a second embodiment of the deflection device according to the present invention. The first shown in FIG.
The same components as those of the embodiment are designated by the same reference numerals, and the duplicated description will be omitted.

In the second embodiment, a temperature compensating circuit constituted by connecting the main vertical deflection coil 3, the resistors 14f and 14g, and the thermistor 16 in series and parallel between the connection points of the resistors 14a and 14b. Are connected in series. In addition, in addition to the series circuit of the temperature compensation circuit and the resistor 14a, a first resistor 14d, 14h, a potentiometer type variable resistor 15a, a resistor 14i and a diode 18a are provided.
And the second shunt circuit composed of the resistor 14d and the diode 18b. In addition, a resistor 14 is added to the series circuit of the temperature compensating circuit and the resistor 14b.
The third shunt circuit including d, 14h, the variable resistor 15a, the resistor 14i, and the diode 18c is connected to the fourth shunt circuit including the resistor 14d and the diode 18d. Here, the diodes 18a and 18c have a forward conduction voltage (barrier voltage) higher than that of the diodes 18b and 18d.
The element of low is used. In addition, the diodes 18a, 1
8d is a vertical deflection current I _V flows in the direction indicated by the arrow in FIG. 8, are connected with polarity such that conducts when deflected upward electron beam, a diode 18b, 18c is vertical deflection current I _V The flow is in the direction opposite to the direction shown by the arrow in FIG. 8 and the connection is made so that the electron beam conducts when it is deflected downward. The variable terminal of the variable resistor 15a is connected to the connection point between the main vertical deflection coil 3 and the resistor 14f.

Also in this embodiment, as in the first embodiment shown in FIG. 1, the lower auxiliary vertical deflection coil 7 is used.
The difference current (Ib-Ia) between the current Ib flowing in b and the current Ia flowing in the upper auxiliary vertical deflection coil 7a is formed into a waveform as shown in FIG. Line misconvergence can be corrected. Furthermore,
By appropriately setting the resistance values of the resistors 14d, 14h, and 14i, the variable resistor 15a can be adjusted to adjust the resistance of FIG.
The difference current component I2 shown in FIG. 7D can be changed without changing the difference current component I1 shown in FIG. 7C, and the B-shaped vertical line misconvergence component shown in FIG. While maintaining the correction amount of substantially constant, it is possible to correct the misconvergence component of the arcuate vertical line as shown in FIG. 6C, which varies due to manufacturing error. As shown in d), vertical line misconvergence can be corrected in both the screen middle portion and the screen upper and lower portions.

Further, by providing the temperature compensating circuit including the thermistor 16 in parallel with the first to fourth shunt circuits,
The voltage applied to the first to fourth shunt circuits can be given a negative temperature coefficient to compensate for the temperature drift of the currents flowing in the diodes 18a to 18d and stabilize the misconvergence correction amount against temperature changes. .

The shapes of the auxiliary vertical deflection coil and the sub core are not limited to those in the above-mentioned embodiment, and although illustrations are omitted, for example, a pair of E-shaped sub cores facing each other in the left-right direction are used. Then, even if the upper auxiliary vertical deflection coil is configured by the pair of coils arranged on the upper side of each sub core, and the lower auxiliary vertical deflection coil is configured by the pair of coils arranged on the lower side of each sub core, The same effect as the above-described embodiment can be obtained.

[0035]

According to the present invention, it is possible to correct the misconvergence of vertical lines having opposite directions in the middle part of the screen and the upper and lower parts of the screen, and by adjusting one variable resistor, the misconvergence of the B-shaped vertical line. The misconvergence component of a bow-shaped vertical line that changes due to manufacturing errors can be corrected while maintaining the correction amount of the component approximately constant, and the vertical line misconvergence is displayed in the middle part of the screen and the upper and lower parts of the screen. Can be corrected.

[Brief description of drawings]

FIG. 1 is a circuit diagram of a deflecting device according to a first embodiment of the present invention.

FIG. 2 is a partially cutaway side view of the color cathode ray tube device according to the present invention.

FIG. 3 is a rear view of the deflection yoke according to the present invention shown in FIG.

FIG. 4 is a block diagram of a display device using the color cathode ray tube device according to the present invention.

FIG. 5 is a diagram showing a vertical deflection magnetic field by an auxiliary vertical deflection coil of the deflection yoke according to the present invention.

FIG. 6 is a diagram showing a misconvergence pattern for explaining the operation of the deflection yoke according to the present invention.

FIG. 7 is a current waveform diagram for explaining the operation of the deflection yoke according to the present invention.

FIG. 8 is a circuit diagram of a deflecting device according to a second embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Deflection yoke, 2 ... Horizontal deflection coil, 3 ... Main vertical deflection coil, 4 ... Main core, 6a, 6b ... Sub core, 7a ... Upper auxiliary vertical deflection coil, 7b ... Lower auxiliary vertical deflection coil,
9 ... Electron gun, 11 ... Color cathode ray tube, 12 ... Phosphor screen, 1
4a to 14i ... Resistors, 15a ... Variable resistors, 16 ... Thermistors, 18a-18d ... Diodes, 19B, 19
G, 19R ... Electron beam, 20 ... Vertical deflection magnetic field, 21
B, 21G, 21R ... Deflection force, 24B, 24R ... Vertical line,
30 ... Video circuit, 31 ... Horizontal deflection circuit, 32 ... Vertical deflection circuit, 33 ... High voltage circuit.

─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Koji Fukuma 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Hitachi, Ltd. Multimedia system development headquarters (72) Inventor Soichi Sakurai Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa 292 Hitachi Ltd., Multimedia Systems Development Division (72) Inventor Hiroshi Yoshioka 3300 Hayano, Mobara-shi, Chiba Hitachi Ltd. Electronic Device Division (72) Inventor Atsushi Takeyama 1 Masano, Kitano, Mizusawa-shi, Iwate Address: Hitachi Media Electronics Co., Ltd. (56) Reference JP 5-14914 (JP, A) JP 7-322276 (JP, A) JP 61-148751 (JP, A) JP 63 -225462 (JP, A) JP-A-1-248437 (JP, A) JP-A-3-82290 (JP, A) Flat 3-247093 (JP, A) JP flat 9-46719 (JP, A) JitsuHiraku flat 2-128486 (JP, U) (58 ) investigated the field (Int.Cl. ^7, DB name) H04N 9 / 28

Claims (12)

(57) [Claims] 1. A deflection yoke used in combination with a color cathode ray tube having a horizontal deflection coil, a main vertical deflection coil, upper and lower auxiliary vertical deflection coils, and an electron gun for generating multiple electron beams in an in-line arrangement. In a first series circuit in which a first resistor is connected in series to the upper auxiliary vertical deflection coil, and a second series circuit in which a second resistor is connected in series to the lower auxiliary vertical deflection coil. Is connected in series with the main vertical deflection coil, and is turned on in parallel with the first resistor when the vertical deflection current flows in a first direction at a first value or more. A shunt circuit is connected to a second shunt circuit, which conducts when the vertical deflection current is greater than or equal to a second value greater than the first value and flows in a direction opposite to the first direction. In parallel with the resistor of 2, A third shunt circuit that conducts when a deflection current is equal to or greater than the first value and flows in a direction opposite to the first direction; and a vertical deflection current is equal to or greater than the second value in the first direction. A fourth shunt circuit that conducts when flowing flows is connected, a variable resistor is connected to the first to fourth shunt circuits, and the variable resistors are adjusted to flow to the first and third shunt circuits. A deflection yoke, wherein one of a current and a current flowing through the second and fourth shunt circuits is increased and the other current is decreased. 2. The variable resistor according to claim 1, wherein the variable resistor includes first and second fixed terminals and a variable terminal, and the first fixed terminal of the variable resistor is connected to the first and third shunt circuits. And a second fixed terminal connected to the second and fourth shunt circuits, and a variable terminal connected to a connection point side of the first resistor and the second resistor. Deflection yoke to do. 3. The first and third shunt circuits according to claim 1, wherein the first and third shunt circuits each include a diode having a first forward conduction voltage, and the second and fourth shunt circuits each include the first shunt circuit. A deflection yoke comprising a diode having a second forward conduction voltage higher than the forward conduction voltage. 4. A temperature compensating circuit comprising a resistor and a thermistor between the connection point of the first and second resistors and the connection point of the first to fourth shunt circuits according to claim 3. Deflection yoke characterized by being connected. 5. A color cathode ray tube having an electron gun for generating an in-line array of multiple electron beams, and a color cathode ray tube having a deflection yoke having a horizontal deflection coil, a main vertical deflection coil, and upper and lower auxiliary vertical deflection coils. In the device, a first series circuit in which a first resistor is connected in series to the upper auxiliary vertical deflection coil, and a second series circuit in which a second resistor is connected in series to the lower auxiliary vertical deflection coil. A parallel circuit in which is connected in parallel with the main vertical deflection coil in series, and is conducted in parallel with the first resistor when the vertical deflection current is equal to or greater than the first value and flows in the first direction. And a second shunt circuit connected when the vertical deflection current is greater than or equal to a second value larger than the first value and flows in a direction opposite to the first direction. In parallel with the second resistor A third shunt circuit that conducts when a vertical deflection current is equal to or greater than the first value and flows in a direction opposite to the first direction; and a vertical shunt current is equal to or greater than the second value, and the first direction is A fourth shunt circuit that conducts when flowing to, a variable resistor is connected to the first to fourth shunt circuits, and the first and third shunt circuits are adjusted by adjusting the variable resistor. A color cathode ray tube device, wherein one of a current flowing and a current flowing through the second and fourth shunt circuits is increased and the other current is decreased. 6. The variable resistor according to claim 5, further comprising first and second fixed terminals and a variable terminal, the first fixed terminal of the variable resistor being connected to the first and third shunt circuits. And a second fixed terminal connected to the second and fourth shunt circuits, and a variable terminal connected to a connection point side of the first resistor and the second resistor. Color cathode ray tube device. 7. The method according to claim 5, wherein the first and third shunt circuits each include a diode having a first forward conduction voltage, and the second and fourth shunt circuits each include the first first conduction voltage. A color cathode ray tube device comprising a diode having a second forward conduction voltage higher than the forward conduction voltage. 8. A temperature compensating circuit comprising a resistor and a thermistor between the connection point of the first and second resistors and the connection point of the first to fourth shunt circuits according to claim 7. A color cathode ray tube device characterized by being connected. 9. A color cathode ray tube having an electron gun for generating multiple electron beams in an in-line arrangement, a deflection yoke having a horizontal deflection coil, a main vertical deflection coil, upper and lower auxiliary vertical deflection coils, and an electron gun of the electron gun. A display device comprising: a video circuit for controlling electron beam generation; a horizontal deflection circuit for supplying a horizontal deflection current to the horizontal deflection coil; and a vertical deflection circuit for supplying a vertical deflection current to the vertical deflection circuit. The yoke is a first series circuit in which a first resistor is connected in series to the upper auxiliary vertical deflection coil and a second series circuit in which a second resistor is connected in series to the lower auxiliary vertical deflection coil. When a parallel circuit in which is connected in parallel is connected in series with the main vertical deflection coil, and a vertical deflection current flows in a first direction at a first value or more in parallel with the first resistor. And a second shunt circuit that conducts when the vertical deflection current flows in a direction opposite to the first direction when the vertical deflection current is greater than or equal to a second value that is greater than the first value. A third shunt circuit that is connected in parallel with the second resistor when the vertical deflection current is equal to or more than the first value and flows in the direction opposite to the first direction, and a vertical deflection circuit. A fourth shunt circuit, which conducts when a current flows at the second value or more in the first direction, is connected, and a variable resistor is connected to the first to fourth shunt circuits. The current flowing through the first and third shunt circuits and the current flowing through the second and fourth shunt circuits is increased and the other current is decreased by adjusting the voltage regulator. Display device. 10. The variable resistor according to claim 9,
The first and second fixed terminals and the variable terminal are provided, the first fixed terminal of the variable resistor is connected to the first and third shunt circuits, and the second fixed terminal is connected to the second and fourth And a variable terminal connected to a connection point side of the first resistor and the second resistor. 11. The method according to claim 9 or 10, wherein:
And the third shunt circuit each include a diode having a first forward conduction voltage, and the second and fourth shunt circuits each have a second forward conduction voltage greater than the first forward conduction voltage. A display device comprising a diode. 12. The first and second devices according to claim 11.
2. A display device, wherein a temperature compensation circuit composed of a resistor and a thermistor is connected between the connection point of the resistor and the connection point of the first to fourth shunt circuits.