KR100405210B1 - Apparatus for correction of deflection yoke - Google Patents

Abstract

The present invention is to provide a correction device for the deflection yoke, provided with one side iron piece and the other side iron piece in a position symmetrical with the one side iron piece, the one side iron piece is provided with the first and third protruding iron piece and the first fine iron piece The first fine iron piece is to protrude shorter than the protruding length of the first and third protruding iron piece in the direction with respect to the other side iron piece, winding the first and third coils to the first and third protruding iron piece, respectively, The other side iron piece is provided with a fourth and sixth protruding iron piece and the second fine iron piece, and the second fine iron piece so as to protrude shorter than the protruding length of the fourth and sixth protruding piece in the direction with respect to the one side iron piece, The fourth and sixth protruding pieces are configured to wind the fourth and sixth coils, respectively, so that the Comapri, a miss convergence correction circuit of the deflection yoke, is made using the minimum space and the minimum structure. In this way, it is possible to obtain an excellent calibration effect with low production cost.

Description

Apparatus for correction of deflection yoke}

The present invention relates to a device for compensating deflection yoke, in particular, by implementing a coma free, a misconvergence correction circuit of a deflection yoke using a minimum space and a minimum structure, the production cost is low and excellent. A device for compensating deflection yoke that is suitable for obtaining a correction effect.

In general, a deflection yoke is a device for deflecting an electron beam emitted from an electron gun of a cathode ray tube. The deflection yoke is composed of a set of one or several coils in a beam tube and generates a magnetic field for biasing an electron beam.

1 is a configuration diagram of a cathode ray tube employing a general deflection yoke.

Here, reference numeral 1 denotes a fluorescent film coated with R, G, and B films on the inner surface, 2 is a front panel on which the fluorescent film 1 is applied, and 3 is a rear end fused to the rear end of the panel 2. It is a panel, 4 is a neck part, 5 is the electron gun 5 enclosed in the said neck part 4, 6 is the electron beam radiated | emitted from the said electron gun 5.

Further, reference numeral 7 denotes a deflection yoke for deflecting the electron beam 6 horizontally or vertically so that the electron beam 6 radiated from the electron gun 5 can strike the entire surface of the fluorescent film 1, 8 Is a shadow mask in which a plurality of openings are formed so that the electron beam 6 deflected by the deflection yoke 7 selectively passes through and allows color selection.

Further, reference numeral 9 in the deflection yoke 7 is a horizontal deflection coil for deflecting the electron beam 6 emitted from the electron gun 5 in a horizontal direction, and 10 is a vertical deflection for deflecting the electron beam 6 in a vertical direction. It is a deflection coil, 11 is a conical ferrite core to increase the magnetic efficiency by reducing the loss of magnetic force generated from the horizontal deflection coil (9) and the vertical deflection coil (10), 12 is the horizontal deflection coil (9), A holder for fixing the vertical deflection coil 10 and the ferrite core 11 at a predetermined position and performing an insulator performance between the horizontal deflection coil 9 and the vertical deflection coil 10.

Further, reference numeral 13 denotes a convergence yoke for correcting miss convergence due to a manufacturing error of a cathode ray tube in the neck portion 4 of the deflection yoke 7, and 14 denotes a pair of miss convergence correction magnets.

FIG. 2 is a configuration diagram of a conventional device for correcting a deflection yoke for a cathode ray tube, and FIG. 3 is a configuration diagram showing a magnetic field direction in FIG. 2.

Therefore, the convergence yoke 13 usually has a pair of E-shaped iron pieces 20 and 30 on one side and the other side in symmetrical direction, respectively, and is a first leg that is each leg of the one side and the other side iron pieces 20 and 30. The first to sixth coils 24 to 26 and 34 to 36 are wound around the sixth to sixth protruding iron pieces 21 to 23 and 31 to 33 to generate a six-pole magnetic field.

Referring to the operation of the conventional device configured as described in more detail as follows.

First, when power is applied to such a conventional cathode ray tube, the electron beam 6 is radiated from the electron gun 5, and the electron beam 6 is deflected horizontally or vertically by the deflection yoke 7. At this time, the horizontal deflection coil 9 of the deflection yoke 7 generally flows a current having a frequency of 15.75 KHz or higher, and the electron beam 6 inside the cathode ray tube is moved horizontally by using the magnetic field generated accordingly. To deflect, the vertical deflection coil 10 flows a current having a frequency of 60Hz normally. The generated magnetic field is used to deflect the electron beam 6 in the vertical direction.

The non-uniform magnetic field of the horizontal and vertical deflection coils 9 and 10 allows the three electron beams R, G, and B to achieve convergence on the screen without using additional circuits and additional devices. Self-convergence-type deflection yoke (7) has been mainly developed, which adjusts the winding distribution of the horizontal and vertical deflection coils (9) and (10) to produce barrel or pin-cushion type magnetic fields for each region. R, G, and B have different deflection forces according to their positions so that electron beams R, G, and B of different distances can be collected at the same point from the starting point to the destination screen.

In the case of forming a magnetic field by flowing a current through the horizontal and vertical deflection coils 9 and 10, the magnetic permeation by the horizontal and vertical deflection coils 9 and 10 makes it difficult to deflect the electron beam 6 to the front of the screen. By using ferrite core 11 of the magnetic field to minimize the loss of the environment to increase the efficiency of the magnetic field and increase the magnetic force.

As the screen becomes flat, large, and highly detailed, the horizontal and vertical deflection coils (9) (10) alone cannot satisfy raster distortion and convergence characteristics, so that the neck portion (4) of the deflection yoke (7) The convergence yoke 13, ie, a pair of E-shaped iron pieces 20, 30, is provided symmetrically as shown in FIG. 2, and the first to sixth protruding iron pieces that are each leg of the iron pieces 20, 30 are provided. The first to sixth coils 24 to 26 and 34 to 36 are respectively wound around (21 to 23) and (31 to 33) to generate a six-pole magnetic field to satisfy the convergence characteristics.

At this time, the protruding iron pieces 21 to 23 and 31 to 33 always form magnetic fields having the same angle as the first to fourth magnetic lines 27, 28, 37 and 38, as shown in FIG. .

Here, if the second and fifth protruding iron pieces 22 and 32 are not mounted or the second and fifth coils 25 and 35 are not wound, the six-pole magnetic field cannot be formed. And it is impossible to improve the landing (Landing) characteristics.

However, such a conventional apparatus requires the second and fifth protruding pieces 22 and 32 to mount the G / D volume or the Yv volume. Although no G / D volume or Yv volume is required, the second and fifth protruding pieces 22 and 32 are mounted and the second and fifth coils 25 and 35 are respectively wound for correction of miss convergence. There was a disadvantage that the production cost increases.

Accordingly, the present invention has been proposed to solve the conventional problems as described above, and an object of the present invention is to realize the cost of production by implementing a comma free, which is a misconvergence correction circuit of a deflection yoke, using a minimum space and a minimum structure. It is to provide a correction device of the deflection yoke that can obtain a cheap and excellent correction effect.

1 is a configuration of a cathode ray tube employing a general deflection yoke,

2 is a configuration diagram of a conventional correction device for a deflection yoke for a cathode ray tube,

3 is a configuration diagram showing a magnetic field direction in FIG. 2;

4 is a configuration diagram of a device for correcting a deflection yoke according to the present invention;

5 is a configuration diagram illustrating a magnetic field direction of FIG. 4;

FIG. 6 is a diagram illustrating an example of improvement of the VCR characteristic according to FIG. 4.

FIG. 7 is a diagram illustrating an example of improvement of miss convergence according to FIG. 4;

8 is a diagram illustrating an example of improvement of the S3V characteristic according to FIG. 4.

<Description of Symbols for Main Parts of Drawings>

1: fluorescent film 2: front panel

3: rear panel 4: neck part

5 electron gun 6 electron beam

7: deflection yoke 8: shadow mask

9: Horizontal deflection coil 10: Vertical deflection coil

11: ferrite core 12: holder

13: Convergence York 14: Magnet

20: one side iron bar 21: the first protruding iron bar

22: 2nd protrusion iron piece 23: 3rd protrusion iron piece

24: first coil 25: second coil

26: third coil 27: first magnetic force line

28: 2nd magnetic line 29: 1st fine iron piece

30: other side iron 31: fourth protruding iron

32: fifth protruding iron piece 33: sixth protruding iron piece

34: fourth coil 35: fifth coil

36: sixth coil 37: third magnetic force line

38: fourth magnetic force line 39: second fine iron piece

In order to achieve the above object, the deflection yoke correction apparatus according to an embodiment of the present invention,

In the deflection yoke correcting device, the one side iron piece and the other side iron piece in a position symmetrical with the one side iron piece, the one side iron piece is provided with the first and third protruding iron piece and the fine iron piece and the fine iron piece to the other side piece To protrude shorter than the protruding length of the first and third protruding iron pieces in the direction of the direction, the first and third coils are wound around the first and third protruding iron pieces, respectively, and the other side of the protruding pieces And a iron piece and a fine iron piece, wherein the fine iron piece protrudes shorter than the protruding lengths of the fourth and sixth protruding pieces in a direction with respect to the one side iron piece, and the fourth and sixth protruding pieces, respectively. Winding the coil is characterized by its technical configuration.

Hereinafter, an embodiment according to the present invention as described above, the technical spirit of the deflection yoke correction apparatus with reference to the drawings as follows.

4 is a configuration diagram of a device for correcting a deflection yoke according to the present invention.

As shown in the drawing, the one side iron piece 20 and the other side iron piece 30 are provided at positions symmetrical with the one side iron piece 20, and the one side iron piece 20 includes the first and third protruding iron pieces 21 ( 23) and the first fine iron piece 29, wherein the first fine iron piece 29 is longer than the protruding length of the first and third protruding pieces 21 and 23 in the direction of the other iron piece 30. The first and third protruding iron pieces 21 and 23 are wound around the first and third coils 24 and 26, respectively, and the other side iron pieces 30 protrude from the fourth and sixth protrusions. Iron pieces 31 and 33 and the second fine iron piece 39, the second fine iron piece 39 is the fourth and sixth protruding piece 31 (33) in the direction with respect to the one side iron piece (20) 4) and 6th coils 34 and 36 are wound around the fourth and sixth protruding iron pieces 31 and 33, respectively.

In the above, the first and second fine iron pieces 29 and 39 have a length of 5% or more and 50% or less with respect to the protruding lengths of the protruding iron pieces 21, 23, 31, and 33.

The configuration and operation of the deflection yoke correction apparatus according to the present invention configured as described above will be described in more detail with reference to the accompanying drawings.

First of all, the coil is not wound while the magnetic body such as iron piece or deflection coil has a shape shorter than the size of the middle magnetic material (steel piece, core, etc.) in the upper and lower sides of the E-shape. Therefore, the magnetic field forms a semi-6-pole magnetic field, thereby obtaining the necessary correction effect. In particular, the VCR and S3V characteristics are improved.

5 is a configuration diagram illustrating a magnetic field direction of FIG. 4.

Here, a is a length in which the first and third protruding iron pieces 21 and 23 of the one side coil 20 protrude, and b is a length in which the first micro iron piece 29 protrudes. In addition, c is a length in which the fourth and sixth protruding iron pieces 31 and 33 of the other coil 30 protrude, and d is a length in which the second fine iron piece 39 protrudes.

Therefore, a> b, c> d, and the coil is not wound around a which is 1st micro iron piece 29, and b which is 2nd micro iron piece 39.

In addition, two magnetic bodies or two or more magnetic bodies may be used in pairs for the same shape.

Accordingly, since the two poles can be formed by the first and second fine iron pieces 29 and 39 which protrude even finely, the desired six-pole magnetic field can be formed. In addition, the length of the first and second fine iron pieces 29, 39, which are central magnetic bodies, is adjusted within the range of 5% to 50% compared to the protruding iron pieces 21, 23, 31, and 33, and the left and right diagonal portions Even in the first to fourth magnetic lines 27, 28, 37 and 38, the desired magnetic field of 90 degrees or less can be easily formed.

FIG. 6 is a diagram illustrating an example of improvement of the VCR characteristic according to FIG. 4.

Thus, it can be seen that the VCR characteristics of R, B, and G are improved compared to before the present invention.

FIG. 7 is a diagram illustrating an example of improvement of miss convergence according to FIG. 4.

Thus, it can be seen that the miss convergence is improved compared to before applying the present invention.

8 is a diagram illustrating an example of improvement of the S3V characteristic according to FIG. 4.

Therefore, it can be seen that the S3V characteristic from the S2 to the S3 direction is improved as compared with before the present invention.

As such, the present invention implements a comapri, which is a miss convergence correction circuit of the deflection yoke, using a minimum space and a minimum structure, thereby obtaining an excellent correction effect with low production cost.

Although the preferred embodiment of the present invention has been described above, the present invention may use various changes, modifications, and equivalents. It is clear that the present invention can be applied in the same manner by appropriately modifying the above embodiments. Accordingly, the above description does not limit the scope of the invention as defined by the limitations of the following claims.

As described above, the deflection yoke correction device according to the present invention implements a comapri, which is a miss convergence correction circuit of the deflection yoke, using a minimum space and a minimum structure, thereby obtaining an excellent correction effect with low production cost. It can be effective.

The present invention also relates to the display characteristics of all devices (monitors, TVs) that are displayed by micro-irons that are not detected by the coil. Ha. Left. In other words, the convergence characteristics and landing characteristics can also be improved.

Claims (2)

In the correction device having one side iron piece and the other side iron piece is mounted symmetrically with respect to the neck portion of the deflection yoke, The one side iron piece is composed of first and third protruding iron pieces to which the first and third coils are wound, respectively, and a first micro iron piece positioned therebetween, wherein the first micro iron piece is in the direction with respect to the other iron piece. Protruding shorter than the protruding length of the first and third protruding iron pieces, The other side iron piece is composed of fourth and sixth protruding iron pieces to which the fourth and sixth coils are wound, and second micro iron pieces positioned therebetween, and the second micro iron pieces are formed in the direction with respect to the one side iron piece. Protruding shorter than the protruding length of the fourth and sixth protruding iron piece, And the first and second fine iron pieces have a length of approximately 13% with respect to the protruding length of the first, third, fourth and sixth protruding iron pieces. delete