JP2003179945A - Deflection yoke device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve correction precision of misconvergence. <P>SOLUTION: This deflection yoke device is a circuit in which first series circuit containing coils 1a, 1b for generating mainly a barrel magnetic field, coils 1c, 1d for generating mainly a pin magnetic field and a diode circuit 6 are connected in series, and provided with a second series circuit connected in parallel with the first series circuit. The diode circuit 6 is provided with a diode D1 whose anode is connected with an I/O node N5, a diode D2 whose anode is connected with a cathode of the diode D1 and whose cathode is connected with the node N5, a diode D3 whose anode is connected with the cathode of the diode D1 and whose cathode is connected with an I/O node N6, a diode D4 whose anode is connected with the node N6 and whose cathode is connected with an anode of the diode D2 and resistors R2, R3 connected in parallel with a parallel circuit of the diodes D3, D4. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deflection yoke device used for an in-line type color cathode ray tube.

[0002]

2. Description of the Related Art In recent years, color cathode ray tubes (CRTs) used in color display devices have become larger and flatter, and the deflection yoke device used for them has higher performance such as higher convergence and distortion. It has been demanded.

In particular, with the flattening of the CRT, vertical pin distortion and a reversal phenomenon (reversal cross misconvergence) of horizontal line cross miss convergence in the central area of the screen and the peripheral areas above and below the screen as shown in FIG. Occurs,
There is an urgent need to design both of these upper and lower pin distortions and reverse cross miss convergence.

FIG. 9 is a sectional view of a deflection yoke body which constitutes the deflection yoke device. In FIG. 9, 1 is a vertical deflection coil, 1a, 1b, 1c and 1d are split vertical deflection coils 1, 2 is a horizontal deflection coil, 3 is a non-separable core, 4 is a separator, and 5 is a winding. Be a guide.

FIG. 10 is a circuit diagram of a conventional vertical deflection coil circuit which constitutes a deflection yoke device. This FIG.
The vertical deflection coil circuit of Japanese Patent Application Laid-Open No. 4-28684 is disclosed in
No. 1 (hereinafter referred to simply as a document).
The deflection yoke device described in this document corrects the reverse cross-miss convergence described above. In FIG. 10, the same parts as those in FIG.
Reference numeral 0 is a conventional vertical deflection coil circuit, R1 is a resistor, 16 is a diode circuit, D1 and D2 are diodes, and E1 and E2 are vertical deflection voltage application terminals.

The conventional deflection yoke device described above includes a conventional vertical deflection coil circuit 200 including a vertical deflection coil 1, a horizontal deflection coil circuit including a horizontal deflection coil 2, a non-separable core 3, a separator 4, and a winding. And a line guide 5. The vertical deflection coil 1 is a pair of left and right saddle type coils, and the horizontal deflection coil 2 is a pair of upper and lower saddle type coils.

The vertical deflection coil 1 includes a pair of left and right coils (hereinafter, simply referred to as barrel magnetic field generating coils) 1a and 1b which mainly generate a barrel magnetic field, and a pair of left and right coils (hereinafter, referred to as a pin magnetic field) which mainly generate a pin magnetic field. It is divided into 1c and 1d, which are simply used as pin field generating coils. As shown in FIG. 9, the barrel magnetic field generating coils 1 a and 1 b are composed of the non-separable core 3
Is wound near the horizontal axis X, and the pin field generating coils 1c and 1d are wound near the vertical axis Y of the non-separating core 3.

In FIG. 10, a conventional vertical deflection coil circuit 200 includes a vertical deflection coil 1 (barrel magnetic field generating coils 1a and 1b and pin magnetic field generating coils 1c and 1d).
The resistor R1, the diode circuit 16, and the voltage application terminal E
1 and E2.

The barrel magnetic field generating coils 1a and 1b and the resistor R1 are provided between the nodes N1 and N3 and form a first series circuit. In this first series circuit,
Barrel magnetic field generating coils 1a and 1b are connected in series and are provided between nodes N1 and N2. The resistor R1 is provided between the nodes N2 and N3. Therefore, the first
Is a circuit in which barrel magnetic field generating coils 1a and 1b and a resistor R1 are connected in series.

The pin magnetic field generating coils 1c and 1d and the diode circuit 6 are provided between the nodes N4 and N6 and form a second series circuit. In this second series circuit, the pin magnetic field generating coils 1c and 1d are connected in series and are provided between the nodes N4 and N5. Also,
The diode circuit 16 is provided between the nodes N5 and N6. Therefore, the second series circuit is a circuit in which the pin magnetic field generating coils 1c and 1d and the diode circuit 16 are connected in series.

The nodes N1 and N4 are connected to the terminal E1 and the nodes N3 and N6 are connected to the terminal E2. Therefore, the first series circuit and the second series circuit are connected in parallel between the terminals E1 and E2.

In FIG. 10, the diode circuit 16 is
Diodes D1 and D connected in parallel with their polarities reversed
It is composed of two. The diodes D1 and D2 are
For example, a pn junction diode. Node N in FIG.
5, N6 are input / output terminals of the diode circuit 16.

Next, misconvergence due to the vertical deflection coil will be described. As shown in FIG. 11, when many windings are made at positions far from the vertical axis Y of the non-separable core 3, that is, when the angle θ formed by the center O of the non-separable core 3 and both ends of the coil winding is wide. The vertical deflection coil 1A mainly produces a barrel magnetic field. At this time, as shown in FIG. 12, on the left side of the screen, the raster R (red) is shorter than the raster B (blue) in the vertical direction, and on the right side of the screen, the raster R is longer than the raster B in the vertical direction.
(-) Is generated.

Further, as shown in FIG. 13, the angle θ
When is narrow, the vertical deflection coil 1B mainly produces a pin magnetic field. At this time, conversely, as shown in FIG. 14, a misconvergence pattern PQv (+) is formed in which the raster R is vertically longer than the raster B on the left side of the screen and the raster R is shorter than the raster B on the right side of the screen in the vertical direction. Occurs.

From the above, in order to correct the inverted cross-miss convergence shown in FIG. 8, the magnetic field distribution of the vertical deflection coil must be a barrel magnetic field in the central area of the screen and a pin magnetic field in the peripheral area of the screen. I understand.

Next, the operation of the conventional vertical deflection coil circuit 200 will be described. In the following explanation of the operation, the screen center region is a region from the screen center (horizontal axis X) to a position where the vertical deflection amount is ½ of the upper and lower ends of the screen,
In the peripheral area of the screen, for example, the vertical deflection amount is 1 /
The area from the position 2 to the upper and lower ends of the screen.

First, when the vertical deflection voltage applied between the terminals E1 and E2 is a low voltage for vertically deflecting to the central area of the screen, both the diodes D1 and D2 remain OFF, and the diode circuit 16 is almost free. Since no current flows, the current mainly flows through the barrel magnetic field generating coils 1a and 1b. As a result, the deflection coil 1 mainly generates the barrel magnetic field by the barrel magnetic field generating coils 1a and 1b, so that the misconvergence pattern PQv (+) in the central area of the screen is corrected.

On the other hand, when the vertical deflection voltage applied between the terminals E1 and E2 is a high voltage that vertically deflects to the peripheral area of the screen, the diode D1 or D2 is turned on,
Since the current flows through the diode circuit 16, the current also flows through the pin magnetic field generating coils 1c and 1d, and the current flowing through the barrel magnetic field generating coils 1a and 1b is reduced accordingly. That is, of the current flowing through the vertical deflection coil 1, the ratio of the current flowing through the pin magnetic field generating coils 1c and 1c increases, and the ratio of the current flowing through the barrel magnetic field generating coils 1a and 1b decreases by that amount. As a result, in the magnetic field generated by the vertical deflection coil 1, the intensity ratio of the pinned magnetic field increases and the intensity ratio of the barrel magnetic field decreases, and the deflection coil 1 mainly generates the pinned magnetic field. The misconvergence pattern PQv (-) of is corrected.

[0019]

However, in the conventional deflection yoke device described above, one diode (terminal E1) is used.
Has a high potential, the vertical deflection magnetic field correction characteristic has to be set by the ON-OFF characteristic of the diode D1 when the terminal E2 has a high potential, and the terminal E2 has a high degree of freedom in setting the correction characteristic. However, there was a problem that the misconvergence could not be corrected with high accuracy.

In the conventional vertical deflection coil circuit 200, 1
Since the correction characteristic must be set by the ON-OFF characteristic of one diode, the correction characteristic is composed of two straight lines and one bending point as shown in FIG. 2 as the correction characteristic of the prior art. .

However, the actually required correction characteristic of the vertical deflection magnetic field is an approximate square curve, as shown as an ideal correction characteristic in FIG. 2, so that it is constituted by two straight lines and one bending point. The correction characteristic deviates from the necessary correction characteristic, and the correction remains. In particular, as shown in FIG. 2, the vertical deflection amount largely deviates from the necessary correction characteristic at the position of 3/4 of the upper and lower ends of the screen, and the uncorrected amount becomes large. As shown in FIG. 2, the diodes D1 and D
Strictly speaking, a small amount of current flows through the diode circuit 16 even when both are OFF, so that a small amount of current also flows through the pin magnetic field generating coils 1c and 1d as shown in FIG.

The present invention has been made in order to solve such a conventional problem, and an object thereof is to provide a deflection yoke device capable of correcting misconvergence with high accuracy.

[0023]

A deflection yoke device according to claim 1 of the present invention comprises a first series circuit including a vertical deflection coil which mainly generates a barrel magnetic field, and a vertical deflection which mainly generates a pinned magnetic field. In a deflection yoke device comprising a coil and a diode circuit connected in series, the deflection circuit including a second series circuit connected in parallel to the first series circuit, wherein the diode circuit has an anode with a first input. A first diode connected to the output node, an anode connected to the cathode of the first diode, and a cathode connected to the first diode;
A second diode connected to the input / output node of the first diode, an anode connected to the cathode of the first diode, a cathode connected to the second input / output node of the third diode, and an anode of the third diode. A fourth diode connected to the second input / output node and having a cathode connected to the anode of the second diode; and a parallel circuit of the first and second diodes, or the third and fourth diodes.
And a first resistor connected in parallel to the parallel circuit of the diode.

A deflection yoke device according to a second aspect is the deflection yoke device according to the first aspect, wherein the first resistor is further connected in parallel to a parallel circuit of the first and second diodes, and the third and fourth are connected. And a second resistor further connected in parallel to the parallel circuit of the diode.

According to another aspect of the deflection yoke device of the present invention, a first series circuit including a vertical deflection coil that mainly generates a barrel magnetic field, a vertical deflection coil that mainly generates a pinned magnetic field, and a diode circuit are connected in series. A circuit, wherein the first
In a deflection yoke device including a second series circuit connected in parallel to the first series circuit, the diode circuit includes a first diode whose anode is connected to a first input / output node, and a cathode which is the first diode. A second diode connected to the input / output node of the second diode, an anode connected to the cathode of the first diode, a cathode connected to the second input / output node, and an anode of the second diode.
A fourth diode connected to an input / output node of the second diode and having a cathode connected to the anode of the second diode; a first resistor connected in parallel to the first diode or the third diode; And a second resistor connected in parallel with the second diode or the fourth diode.

A deflection yoke device according to a fourth aspect is the deflection yoke device according to the third aspect, wherein the first resistor is connected in parallel to the first diode, and the second resistor is connected to the second diode. The third resistor is connected in parallel and further includes a third resistor connected in parallel to the third diode and a fourth resistor connected in parallel to the fourth diode.

According to a fifth aspect of the present invention, there is provided the deflection yoke device according to any one of the first to fourth aspects, wherein at least one of the first diode and the third diode is a Schottky barrier diode. Two diodes or at least one of the fourth diodes
One is a Schottky barrier diode.

[0028]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1. 1 is a circuit diagram of a vertical deflection coil circuit that constitutes a deflection yoke device according to a first embodiment of the present invention. In FIG. 1, the same components as those in FIG. 10 are denoted by the same reference numerals, 100 is a vertical deflection coil circuit of the first embodiment, 1 is a vertical deflection coil, 1a, 1b,
Reference numerals 1c and 1d denote split coils of the vertical deflection coil 1, R
1, R2, R3 are resistors, 16 is a diode circuit, D1,
D2, D3 and D4 are diodes, and E1 and E2 are vertical deflection voltage application terminals.

The deflection yoke main body of the deflection yoke device of the first embodiment has the same structure as that shown in FIG. Therefore, the deflection yoke device according to the first embodiment includes the vertical deflection coil circuit 100 including the vertical deflection coil 1, the horizontal deflection coil circuit including the horizontal deflection coil 2, the non-separable core 3, the separator 4, and the winding. And a guide 5. That is, the deflection yoke device of the first embodiment has a configuration in which the vertical deflection coil circuit 200 of FIG. 10 is the vertical deflection coil circuit 100 of FIG. 1 in the conventional deflection yoke device.

The vertical deflection coil 1 includes a pair of left and right coils (hereinafter, simply referred to as barrel magnetic field generating coils) 1a and 1b which mainly generate a barrel magnetic field and a pair of left and right coils (hereinafter, referred to as a pin magnetic field) which mainly generates a pin magnetic field. It is divided into 1c and 1d, which are simply used as pin field generating coils. As shown in FIG. 9, the barrel magnetic field generating coils 1 a and 1 b are composed of the non-separable core 3
Is wound near the horizontal axis X, and the pin field generating coils 1c and 1d are wound near the vertical axis Y of the non-separating core 3.

In FIG. 1, the vertical deflection coil circuit 100 according to the first embodiment includes a vertical deflection coil 1 (barrel magnetic field generating coils 1a and 1b and pin magnetic field generating coils 1c and 1).
d), a resistor R1, a diode circuit 6, and vertical deflection voltage application terminals E1 and E2. That is, the vertical deflection coil circuit 100 includes the conventional vertical deflection coil circuit 20.
0 (see FIG. 10), the diode circuit 16 is the diode circuit 6.

The barrel magnetic field generating coils 1a and 1b and the resistor R1 are provided between the nodes N1 and N3 and form a first series circuit. In this first series circuit,
Barrel magnetic field generating coils 1a and 1b are connected in series and are provided between nodes N1 and N2. The resistor R1 is provided between the nodes N2 and N3. Therefore, the first
Is a circuit in which barrel magnetic field generating coils 1a and 1b and a resistor R1 are connected in series.

The pin magnetic field generating coils 1c and 1d and the diode circuit 6 are provided between the nodes N4 and N6 to form a second series circuit. In this second series circuit, the pin magnetic field generating coils 1c and 1d are connected in series and are provided between the nodes N4 and N5. Also,
The diode circuit 6 is provided between the nodes N5 and N6. Therefore, the second series circuit is a circuit in which the pin magnetic field generating coils 1c and 1d and the diode circuit 6 are connected in series.

The nodes N1 and N4 are connected to the terminal E1 and the nodes N3 and N6 are connected to the terminal E2. Therefore, the first series circuit and the second series circuit are connected in parallel between the terminals E1 and E2.

In FIG. 1, the diode circuit 6 is composed of diodes D1, D2, D3 and D4 and resistors R2 and R3. Diodes D1, D2, D3
D4 is, for example, a pn junction diode. The nodes N5 and N6 in FIG. 1 are input / output terminals of the diode circuit 6.

The diode D1 has an anode connected to the input / output node N5 and a cathode connected to the node N7 (and N).
8) is connected. The diode D2 has an anode connected to the node N8 (and N7) and a cathode connected to the first input / output node N5. The diode D3 has an anode connected to the node N7 (and N8) and a cathode connected to the input / output node N6. The diode D4 has an anode connected to the input / output node N6 and a cathode connected to the node N8 (and N7). Further, the resistor R2 is connected to the nodes N6 and N7 (and N
It is provided between 8). The resistor R3 is provided between the nodes N6 and N8 (and N7). The nodes N7 and N8 are connected.

That is, the diodes D1 and D3 are provided in series with forward polarity, and the diodes D2 and D4 are also provided in series with forward polarity. Further, the diodes D1 and D2 are provided in parallel with opposite polarities, and
3 and D4 are also provided in parallel with opposite polarities. The resistors R2 and R3 are further provided in parallel with the parallel circuit of the diodes D3 and D4.

Next, the operation of the vertical deflection coil circuit 100 according to the first embodiment will be described. The screen central region and the screen peripheral region in the following description of the operation of the first embodiment are different from those in the above-described conventional art, and there is a screen intermediate region therebetween. At the boundary between the screen central region and the screen intermediate region, for example, the vertical deflection amount is 1/4 to 1 at the upper and lower ends of the screen.
Up to / 2. Further, the boundary between the screen intermediate area and the screen peripheral area is, for example, the position where the vertical deflection amount is 3/4 of the upper and lower ends of the screen.

First, when the vertical deflection voltage applied between the terminals E1 and E2 is a low voltage for vertically deflecting to the central area of the screen, all the diodes D1 to D4 remain off. At this time, the potential of the node N7 (N8) is
By the parallel combined resistance of the resistors R2 and R3, the node N6 is
It becomes almost the same as the potential of (terminal E2).

Therefore, in the central area of the screen, almost no current flows in the diode circuit 6, so that current mainly flows in the barrel magnetic field generating coils 1a and 1b. As a result, the deflection coil 1 includes the barrel magnetic field generating coils 1a and 1b.
Since the barrel magnetic field is mainly generated by, the misconvergence pattern PQv (+) in the central area of the screen is corrected.

When the vertical deflection voltage applied between the terminals E1 and E2 is the intermediate voltage for vertically deflecting to the screen intermediate area, the voltage between the nodes N5 and N7 (N8) is the ON voltage of the diode D1 or D2. Reaches the diode D
1 or D2 is turned on, and a current flows through the diode D1 or D2 and the parallel combined resistance of the resistors R2 and R3. At this time, the voltage between the node N7 (N8) and N6 does not become the ON voltage of the diode D3 or D4, and the diode D3 or D4 remains OFF.

Therefore, in the middle area of the screen, a current slowly flows through the diode circuit 6 through the parallel combined resistance, so that the pin magnetic field generating coils 1c, 1c also gently flow, and the barrel magnetic field is accordingly increased. Generator coil 1
The current flowing through a and 1b is gradually reduced. That is,
Of the current flowing in the vertical deflection coil 1, the ratio of the current flowing in the pin field generating coils 1c, 1c gradually increases,
As a result, the ratio of the current flowing through the barrel magnetic field generating coils 1a and 1b gradually decreases. As a result, in the magnetic field generated by the vertical deflection coil 1, the intensity ratio of the pin magnetic field gradually increases and the intensity ratio of the barrel magnetic field gradually decreases, so that the deflection coil 1 generates the barrel magnetic field and the pin magnetic field. Therefore, the misconvergence pattern PQv (+) or PQv (−) in the intermediate area of the screen is corrected.

When the vertical deflection voltage applied between the terminals E1 and E2 is a high voltage that vertically deflects to the peripheral area of the screen, the voltage between the nodes N5 and N7 (N8) is the ON voltage of the diode D1 or D2. And the voltage between the nodes N7 (N8) and N6 also reaches the ON voltage of the diode D3 or D4, all the diodes D1 to D4 are turned on.
Then, a current flows through the diode D1 or D2, the diode D3 or D4, and the parallel combined resistance of the resistors R2 and R3.

Therefore, in the peripheral area of the screen, a current flows through the diode circuit 6 without passing through the parallel combination resistance, and therefore, of the current flowing through the vertical deflection coil 1,
The ratio of the current flowing through the pin magnetic field generating coils 1c, 1c further increases, and the ratio of the current flowing through the barrel magnetic field generating coils 1a, 1b further decreases accordingly. As a result, in the magnetic field generated by the vertical deflection coil 1, the intensity ratio of the pin magnetic field further increases and the intensity ratio of the barrel magnetic field further decreases, and the deflection coil 1 mainly generates the pin magnetic field. Misconvergence pattern P in the peripheral area
Qv (-) is corrected.

The boundary between the screen intermediate area and the screen peripheral area, that is, the ON-OFF characteristics of the diodes D3 and D4 (switching timing, vertical deflection position when switching) is adjusted by the combined resistance value of the resistors R2 and R3. it can.

FIG. 2 is a correction characteristic diagram of the vertical deflection magnetic field in the vertical deflection coil circuit 100 according to the first embodiment of the present invention. In addition to the correction characteristic of the first embodiment (correction characteristic of the present invention), FIG. 2 also shows the ideal correction characteristic and the correction characteristic of the prior art. Also, these correction characteristics are
This is shown by the current waveforms of the pin magnetic field generating coils 1c and 1d. Therefore, the horizontal axis of FIG. 2 is the vertical deflection amount, and
The vertical axis represents the amount of current flowing through the pin magnetic field generating coils 1c and 1d.

A conventional vertical deflection coil circuit 200 (see FIG. 10)
In the reference), the correction characteristics must be set by the ON-OFF characteristics of one diode (the diode D1 when the terminal E1 has a high potential and the diode D2 when the terminal E2 has a high potential). The characteristics are shown in Figure 2.
As shown in FIG. 3, it is composed of two straight lines and one bending point.

However, since the ideal correction characteristic is a square curve as shown in FIG. 2, in the conventional correction characteristic composed of two straight lines and one inflection point, the vertical deflection amount is particularly high in the vertical direction of the screen. At the position of 3/4 of the edge, the deviation largely deviates from the ideal correction characteristic, and the uncorrected portion becomes large.

On the other hand, in the vertical deflection coil circuit 100 of the first embodiment, two diodes (diodes D1 and D3 when the terminal E1 has a high potential and diodes D2 and D4 when the terminal E2 has a high potential) are provided. Since they are provided in series, the correction characteristics can be set by the ON-OFF characteristics of the two diodes, and either of the two diodes (the diode D3 and the terminal E2 when the terminal E1 is at a high potential). When the voltage is high, the resistors R2 and R3 are provided in parallel with the diode D4, so that the two diodes are individually turned on / off at different timings (at different vertical deflection positions).
It has a configuration that can be made.

Therefore, in the vertical deflection coil circuit 100 according to the first embodiment, as shown in FIG.
Since the correction characteristic can be configured by one bending point, it is possible to give the degree of freedom in setting the correction characteristic. This makes it possible to bring the correction characteristics closer to the ideal correction characteristics,
Since the uncorrected residue can be reduced (particularly, the uncorrected residue at the position where the vertical deflection amount is 3/4 of the upper and lower ends of the screen can be greatly reduced), misconvergence can be corrected with high accuracy.

As described above, according to the first embodiment, two diodes (diodes D1 and D3 or diodes D2 and D4) are provided in series, and either of the two diodes (diode D3 or diode D4) is provided. Since the resistors R2 and R3 are provided in parallel with each other, the degree of freedom in setting the correction characteristic can be increased, so that the misconvergence can be corrected with high accuracy.

Embodiment 2. FIG. 3 is a circuit diagram of a diode circuit which constitutes a vertical deflection coil circuit of the deflection yoke device according to the second embodiment of the present invention. In FIG. 3, the same components as those in FIG. 1 are designated by the same reference numerals, and 7 is a diode circuit according to the second embodiment.

The vertical deflection coil circuit according to the second embodiment has a structure in which the diode circuit 6 in the vertical deflection coil circuit 100 (see FIG. 1) according to the first embodiment is the diode circuit 7 shown in FIG.

The diode circuit 7 of the second embodiment is composed of diodes D1, D2, D3 and D4 and a resistor R2. That is, the diode circuit 7 has a configuration in which the resistor R3 is removed from the diode circuit 6 of the first embodiment.

The operation of the vertical deflection coil circuit of the second embodiment is the same as that of the vertical deflection coil circuit 100 of the first embodiment. Therefore, the correction characteristic of the vertical deflection magnetic field of the second embodiment is similar to the correction characteristic of the first embodiment (see FIG. 2).

However, in the second embodiment, the resistor R3
Since no diode is provided, the diodes D3 and D4 are turned on.
The -OFF characteristic can be adjusted by the resistor R2 instead of the parallel combined resistor of the resistors R2 and R3.

As described above, according to the second embodiment, misconvergence can be corrected with high accuracy as in the first embodiment, and the parallel resistance can be reduced by one as compared with the first embodiment.

Third Embodiment FIG. 4 is a circuit diagram of a diode circuit which constitutes a vertical deflection coil circuit of the deflection yoke device according to the third embodiment of the present invention. 7, the same components as those in FIG. 3 are denoted by the same reference numerals, 8 is a diode circuit of the third embodiment, and R4 is a resistor.

The vertical deflection coil circuit according to the third embodiment has a configuration in which the diode circuit 7 in the vertical deflection coil circuit according to the second embodiment is the diode circuit 8 shown in FIG.

The diode circuit 8 of the third embodiment is composed of diodes D1, D2, D3 and D4 and resistors R2 and R4. That is, the diode circuit 8
In the diode circuit 7 of the second embodiment, the resistance R
4 is further provided. The resistor R4 is connected to the node N5.
And N7 (and N8). That is,
The resistor R4 is further provided in parallel with the parallel circuit of the diodes D1 and D2.

The operation of the vertical deflection coil circuit of the third embodiment is similar to that of the vertical deflection coil circuit of the first and second embodiments. Therefore, the correction characteristics of the vertical deflection magnetic field of the third embodiment are the same as those of the first and second embodiments (see FIG. 2).
See).

However, in the third embodiment, the resistor R4
Since the diode D3 and D4 are turned on,
The OFF characteristic can be adjusted by the resistor R2, and the ON / OFF characteristics of the diodes D1 and D2 can be adjusted by the resistor R4.
Can be adjusted by

As described above, according to the third embodiment, the ON-OFF characteristics of the diodes D3 and D4 can be adjusted by the resistor R2, and the diodes D1 and D2 can be adjusted.
Since the ON-OFF characteristic can be adjusted by the resistor R4, the degree of freedom in setting the correction characteristic can be expanded as compared with the first and second embodiments, and thus misconvergence can be corrected with higher accuracy.

Fourth Embodiment FIG. 5 is a circuit diagram of a diode circuit which constitutes a vertical deflection coil circuit of the deflection yoke device according to the fourth embodiment of the present invention. 5, the same components as those in FIG. 1 are designated by the same reference numerals, and 9 is the diode circuit of the fourth embodiment.

The vertical deflection coil circuit of the fourth embodiment has a configuration in which the diode circuit 6 in the vertical deflection coil circuit 100 of the first embodiment (see FIG. 1) is the diode circuit 9 of FIG.

The diode circuit 9 of the fourth embodiment differs from the diode circuit 6 of the first embodiment in that the node N7
And N8 are disconnected. Therefore, the resistance R
2 is provided between the nodes N6 and N7 and has a resistance R
3 is provided between the nodes N6 and N8. That is, the resistor R2 is provided in parallel with the diode D3, and the resistor R3 is provided in parallel with the diode D4.

The operation of the vertical deflection coil circuit of the fourth embodiment is similar to that of the vertical deflection coil circuit 100 of the first embodiment. Therefore, the correction characteristic of the vertical deflection magnetic field of the fourth embodiment is similar to the correction characteristic of the first embodiment (see FIG. 2).

However, in the fourth embodiment, the node N
Since the connection between 7 and N8 is cut off, diode D3
ON-OFF characteristics of the diode D by the resistor R2
The ON-OFF characteristics of No. 4 can be individually adjusted by the resistor R3.

As described above, according to the fourth embodiment, the ON-OFF characteristic of the diode D3 is changed by the resistor R2, and the ON-OFF characteristic of the diode D4 is changed by the resistor R3.
With the configuration in which each can be adjusted individually, the degree of freedom in setting the correction characteristics can be expanded as compared with the first embodiment, and therefore misconvergence can be corrected with higher accuracy.

In the fourth embodiment, the resistor R2 may be provided in parallel with the diode D1 or the resistor R3 may be provided in parallel with the diode D2.

Fifth Embodiment FIG. 6 is a circuit diagram of a diode circuit which constitutes a vertical deflection coil circuit of a deflection yoke device according to a fifth embodiment of the present invention. 6, the same components as those in FIG. 5 are designated by the same reference numerals, and 10 is the fifth embodiment.
The diode circuits R4 and R5 are resistors.

The vertical deflection coil circuit according to the fifth embodiment has a configuration in which the diode circuit 9 is the diode circuit 10 shown in FIG. 6 in the vertical deflection coil circuit according to the fourth embodiment.

The diode circuit 10 of the fifth embodiment includes diodes D1, D2, D3, D4 and resistors R2, R3.
It is composed of R4 and R5. That is, the diode circuit 10 corresponds to the diode circuit 9 of the fourth embodiment.
In the above, the resistors R4 and R5 are further provided.
The resistor R4 is provided between the nodes N5 and N7,
The resistor R5 is provided between the nodes N6 and N8.
That is, the resistor R4 is provided in parallel with the diode D1, and the resistor R5 is provided in parallel with the diode D2.

The operation of the vertical deflection coil circuit of the fifth embodiment is similar to that of the vertical deflection coil circuits of the first and fourth embodiments. Therefore, the correction characteristics of the vertical deflection magnetic field of the fifth embodiment are the same as those of the first and fourth embodiments (see FIG. 2).
See).

However, in the fifth embodiment, the resistance R
Since R4 and R5 are provided, ON-O of diode D3
The FF characteristic is turned on of the diode D4 by the resistor R2.
The OFF characteristic is turned on by the resistor R3 to turn on the diode D1.
The -OFF characteristic is set to the O of the diode D2 by the resistor R4.
The N-OFF characteristic can be adjusted individually by the resistor R5.

As described above, according to the fifth embodiment, the ON-OFF characteristic of the diode D3 is changed by the resistor R2, and the ON-OFF characteristic of the diode D4 is changed by the resistor R3.
The ON-OFF characteristic of the diode D1 can be individually adjusted by the resistor R4, and the ON-OFF characteristic of the diode D2 can be individually adjusted by the resistor R5, so that the degree of freedom in setting the correction characteristic can be increased as compared with the fourth embodiment. Therefore, misconvergence can be corrected with higher accuracy.

Sixth Embodiment FIG. 7 is a circuit diagram of a diode circuit which constitutes a vertical deflection coil circuit of a deflection yoke device according to a sixth embodiment of the present invention. 7, the same components as those in FIG. 1 are designated by the same reference numerals, and 11 is the sixth embodiment.
The diode circuits, DS1 and DS2, are Schottky barrier diodes.

The vertical deflection coil circuit of the sixth embodiment has a structure in which the diode circuit 6 is the diode circuit 11 of FIG. 7 in the vertical deflection coil circuit 100 (see FIG. 1) of the first embodiment.

The diode circuit 11 of the sixth embodiment comprises Schottky barrier diodes DS1 and DS2 and diodes D3 and D4. That is, the diode circuit 11 has a configuration in which the diodes D1 and D2 in the diode circuit 6 of the first embodiment are Schottky barrier diodes DS1 and DS2, respectively.

When the diodes D3 and D4 are pn junction diodes, for example, the Schottky barrier diodes DS1 and DS2 have lower ON voltages than the pn junction diodes. You can make fine adjustments.

As described above, according to the sixth embodiment, since the Schottky barrier diodes DS1 and DS2 are provided, the ON-OFF characteristics of the diodes can be finely adjusted, so that the misconvergence is corrected with higher accuracy. it can.

In the sixth embodiment, any one of the four diodes, or any two diodes,
Alternatively, any three or all of them may be Schottky barrier diodes.

Further, the sixth embodiment has a configuration in which the Schottky barrier diode is provided in the first embodiment, but the configuration in which the Schottky barrier diode is provided in the second to sixth embodiments is also possible. .

[0084]

As described above, according to the deflection yoke device of the first aspect of the present invention, the two diodes (first
Of the first and third diodes when the input / output node of is at a high potential, and the second diode when the second input / output node is at a high potential.
And a fourth diode) in series, and the first resistor is further provided in parallel with the parallel circuit of the first and second diodes or the parallel circuit of the third and fourth diodes. Since there is a degree of freedom in setting, there is an effect that misconvergence can be corrected with high accuracy. Further, there is an effect that it is sufficient to provide one parallel resistor.

According to the deflection yoke device of the second aspect,
Setting the correction characteristic by providing the first resistor in parallel with the parallel circuit of the first and second diodes and further providing the second resistor in parallel with the parallel circuit of the third and fourth diodes Since the degree of freedom can be further expanded, there is an effect that misconvergence can be corrected with higher accuracy.

According to the deflection yoke device of the third aspect,
Two diodes (first and third diodes when the first input / output node has a high potential and second and fourth diodes when the second input / output node has a high potential) are provided in series, and the first diode A first resistor is provided in parallel with the diode or the third diode, and the second diode or the fourth resistor is provided.
By providing the second resistor in parallel with the diode of
Since the degree of freedom in setting the correction characteristic can be further widened as compared with the first aspect, there is an effect that misconvergence can be corrected with higher accuracy.

According to the deflection yoke device of the fourth aspect,
A first resistor is provided in parallel with the first diode, a second resistor is provided in parallel with the second diode, a third resistor is provided in parallel with the third diode, and a third resistor is provided in parallel with the fourth diode. Since the resistance of No. 4 is provided, the degree of freedom in setting the correction characteristic can be further widened as compared with the above-mentioned claim 3,
There is an effect that the misconvergence can be corrected with higher accuracy.

According to the deflection yoke device of the fifth aspect,
By making at least one of the four diodes a Schottky barrier diode, the diode ON-O
Since the FF characteristics can be finely adjusted, there is an effect that misconvergence can be corrected with higher accuracy.

[Brief description of drawings]

FIG. 1 is a circuit diagram of a vertical deflection coil circuit that constitutes a deflection yoke device according to a first embodiment of the present invention.

FIG. 2 is a correction characteristic diagram of a vertical deflection magnetic field in the vertical deflection coil circuit according to the embodiment of the present invention.

FIG. 3 is a circuit diagram of a diode circuit that constitutes a vertical deflection coil circuit of a deflection yoke device according to a second embodiment of the present invention.

FIG. 4 is a circuit diagram of a diode circuit that constitutes a vertical deflection coil circuit of a deflection yoke device according to a third embodiment of the present invention.

FIG. 5 is a circuit diagram of a diode circuit that constitutes a vertical deflection coil circuit of a deflection yoke device according to a fourth embodiment of the present invention.

FIG. 6 is a circuit diagram of a diode circuit which constitutes a vertical deflection coil circuit of a deflection yoke device according to a fifth embodiment of the present invention.

FIG. 7 is a circuit diagram of a diode circuit that constitutes a vertical deflection coil circuit of a deflection yoke device according to a sixth embodiment of the present invention.

FIG. 8 is a diagram illustrating reverse cross-miss convergence.

FIG. 9 is a cross-sectional view of a deflection yoke body that constitutes the deflection yoke device.

FIG. 10 is a circuit diagram of a conventional vertical deflection coil circuit that constitutes a deflection yoke device.

FIG. 11 is a cross-sectional view of a vertical deflection coil that generates a barrel magnetic field.

FIG. 12 is a diagram illustrating misconvergence of the vertical deflection coil of FIG. 11.

FIG. 13 is a cross-sectional view of a vertical deflection coil that generates a pinned magnetic field.

FIG. 14 is a diagram illustrating misconvergence of the vertical deflection coil of FIG.

[Explanation of symbols]

1 (1a, 1b, 1c, 1d) Vertical deflection coil, 2
Horizontal deflection coil, 3 non-separable cores, 4 separators, 5 winding guides, 6, 7, 8, 9, 10, 11
Diode circuit, 100 vertical deflection coil circuit,
D1, D2, D3, D4 diode, DS1, DS
2 Schottky barrier diode, R1, R2, R
3, R4, R5 resistance.

Claims (5)

[Claims] 1. A circuit in which a first series circuit mainly including a vertical deflection coil for generating a barrel magnetic field and a vertical deflection coil mainly for generating a pin magnetic field and a diode circuit are connected in series. And a second series circuit connected in parallel to the series circuit, the diode circuit includes: a first diode having an anode connected to a first input / output node; and an anode having the first diode. A second diode connected to the cathode of the diode, the cathode connected to the first input / output node, and the anode connected to the cathode of the first diode, the cathode connected to the second input / output node. Third connected
And a fourth diode having an anode connected to the second input / output node and a cathode connected to the anode of the second diode, and a parallel circuit of the first and second diodes, or A deflection yoke device, further comprising: a first resistor connected in parallel to the parallel circuit of the third and fourth diodes. 2. The first resistance is the first and second resistances.
2. The deflection yoke device according to claim 1, further comprising a second resistor further connected in parallel to the parallel circuit of the diode of, and further connected in parallel to the parallel circuit of the third and fourth diodes. . 3. A circuit in which a first series circuit mainly including a vertical deflection coil for generating a barrel magnetic field and a vertical deflection coil mainly for generating a pin magnetic field and a diode circuit are connected in series. And a second series circuit connected in parallel to the series circuit, the diode circuit includes: a first diode whose anode is connected to a first input / output node; and a cathode which is the first diode. A second diode connected to the input / output node of, a third diode whose anode is connected to the cathode of the first diode and whose cathode is connected to the second input / output node, and whose anode is the second diode A fourth terminal connected to the input / output node of the
A first resistor connected in parallel to the first diode or the third diode, and a second resistor connected in parallel to the second diode or the fourth diode. Deflection yoke device characterized by. 4. The first resistor is connected in parallel to the first diode, and the second resistor is connected to the second diode.
And a third resistor connected in parallel with the third diode,
The deflection yoke device according to claim 3, further comprising a fourth resistor connected in parallel to the fourth diode. 5. The deflection yoke device according to claim 1, wherein at least one of the first to fourth diodes is a Schottky barrier diode.