KR950001333Y1 - Convergence correcting apparatus of deflection yoke - Google Patents

Abstract

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Description

Convergence correction device of deflection yoke

1 is a perspective view showing a deflection yoke of the present invention.

Figure 2 is a perspective view of a main part of the coil separator of the present invention.

3 is a partial cutaway view showing a state of the rubber magnet inserted into the coil separator of the present invention.

4 is a plan view of a coil separator showing a compensator of the present invention.

5 is an operating state diagram showing a convergence correction state of the present invention.

6 is a plan view of a coil separator showing a distortion correction state in a general wide-angle deflection yoke.

* Explanation of symbols for main parts of the drawings

1: deflection yoke 2: coil separator

3: solid magnet 4: main insertion hole

5: rubber magnet 6: auxiliary insertion hole

7: Rubber magnet for preventing left and right distortion 8: Second insertion hole

10 Coil Separator 11 Vertical Deflection Coil

12: left and right ferrite core 13: fixed iron piece

15: neck portion 16,17: up and down insertion opening

18,19: Left and right insertion hole 20,20 ': Insertion groove

25,25 ': Rubber Magnet

21 ~ 24: Solid magnet for distortion prevention

The present invention relates to a deflection yoke, and more particularly, to a convergence correction device that allows three beams of dice to coincide with each other on a screen of a TV or a monitor.

The deflection yoke usually consists of a pair of horizontal deflection coils and vertical deflection coils to create a magnetic field that deflects the beam emitted from the electron gun in the horizontal and vertical directions.

However, due to the mechanical error (coil distribution) of the deflection yoke and the radius of curvature of the color receiver in the three electron gun type color receiver, there is a misconvergence phenomenon in which the three beams are not concentrated in one place.

In order to correct this misconvergence phenomenon, a ferrite core is attached to the deflection yoke so that a magnetic field is applied to the electron beam generating the electron gun so that the three beams coincide with each other. Due to the large change in coil distribution, it is difficult to match the convergence, and because of the wide wide angle of view, the ferrite core was attached to compensate for the misconvergence.

Currently, when the large-angle deflection yoke is manufactured, the adjustment of the convergence and the reduction of the distortion have become a big problem because the screen is wide wide. As the distortion of the screen is distorted, the method of FIG. 6 is used. Doing.

That is, the main insertion hole 4 into which the anti-distortion solid magnet 3 is inserted into the rear surface of the coil separator 2 and the rubber magnet 5 correcting the magnetic field of the solid magnet 3 are provided. Is composed of a second insertion hole (8) into which the insertion hole (6) into which is inserted, and a rubber magnet (7) for preventing left and right distortion, and the main insertion hole (4), the auxiliary insertion hole (6), and the second insertion hole (8). Each magnet has a structure in which it is inserted and fixed.

And the structure has the same configuration symmetrically in the lower part.

This distortion correction device is a solid magnet (3) and the correction rubber magnets (5), (7) for preventing the upper distortion formed on the top, and the hard magnet and the correction magnet for preventing the distortion is formed symmetrically on the lower portion of the monitor The left and right distortion preventing rubber magnets 7 formed on the left and right sides of the coil separator are prevented from being crushed in the upper and lower portions, and the left and right distortion of the monitor is prevented.

However, in the above method, since the position and size of the insertion holes into which the solid magnet and the rubber magnet are inserted are designed to be fixed at a certain position according to the turns ratio of the horizontal deflection coil and the vertical deflection coil forming the deflection yoke, the distortion phenomenon can be prevented. However, it could not fundamentally solve the misconvergence phenomenon caused by mechanical error of deflection yoke and curvature radius of color receiver.

An object of the present invention is to provide a convergence correction device capable of preventing distortion caused on the screen and at the same time removing misconvergence caused by mechanical error of the deflection yoke and radius of curvature of the receiving tube.

Another object of the present invention is to provide a correction device that can easily generate a PIN magnetic field and a barrel magnetic field at the time of the convergence correction, so that it is easy to correct the edge of the screen.

Another object is to provide a correction device configured to simplify the manufacturing process of the deflection yoke by configuring distortion correction means and convergence correction means in the front cover of the coil separator.

A feature of the present invention is a distortion correction means consisting of an insertion hole formed in the front cover and a solid magnet inserted into the insertion hole, and a plurality of insertion grooves formed in a circumference around the insertion hole and selectively inserted into and fixed to the insertion groove. Convergence correction means consisting of a rubber magnet, and a convection correction device of a deflection yoke.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing a deflection yoke of the present invention, the deflection yoke 1 is a coil separator 10 for separating a horizontal deflection coil wound inside and a vertical deflection coil 11 wound through a ferrite core to the outside; And a fixed iron piece 13 for coupling the left and right ferrite cores 12 to the body of the coil separator, and a neck portion 15 formed on the coil separator 10.

Three electron guns are coupled through the neck portion 15.

At the rear end of the coil separator 10, the upper and lower insertion holes 16 and 17 to which the upper and lower distortion preventing magnets are inserted are fixed, and the left and right insertion holes 18 to which the left and right distortion preventing solid magnets are inserted and fixed. And (19), each of the upper and lower insertion openings (16), (17) and the left and right insertion openings (18), around the periphery of the insertion groove (20), (20 ') into which a plurality of rubber magnets can be inserted Have

FIG. 2 is a perspective view of a partial main portion of the coil separator, showing in detail the main parts of the insertion holes 16 to 19 and the insertion grooves 20 and 20 ', wherein a solid magnet is fixed to the insertion holes 16 to 19. FIG. The rubber magnets 25 and 25 'are selectively fixedly inserted into the insertion grooves 20 and 20', respectively.

In this case, the cutaway views of the rubber magnets 25 and 25 'inserted into the insertion grooves 20 and 20' are the same as those in FIG.

4 is a plan view of the coil separator showing the compensator of the present invention, showing the insertion structure of the magnet provided on the circumference of the front cover.

Upper and lower insertion openings 16, 17 and left and right insertion openings 18, 19 are formed at upper and lower positions and left and right positions of the front cover, respectively, so that distortion magnets 21, 22, and 23 are provided. ) And 24 are inserted and fixed.

In addition, a plurality of insertion grooves 20 and 20 'are formed at equal intervals having a predetermined angle α around the insertion holes 16 to 23, and optional insertion grooves 20 and 20' are optional. The rubber magnets 25 and 25 'are inserted and fixed.

Here, the extension line of the coil separator 10 is comprised so that it may become a front cover.

The basic operation of the deflection yoke 1 configured as described above is a red (R), green (G), and blue (B) electron beam (R), green (G), and blue (B) beams emitted from the electron gun by applying a sawtooth pulse to the horizontal and vertical deflection coils. ) Will be determined.

However, distortion caused by mechanical mechanism of the cathode ray tube or coil distribution in the deflection yoke causes distortion, and misconvergence which cannot accurately match the three electron beams to the desired position. .

In the present invention, the above-described problem can be solved by the distortion correction means and the convergence correction means installed on the circumference of the front cover.

The solid magnets 21 and 22 installed on the upper and lower parts are always fixed on the coil separator of the deflection yoke (circumference of the front cover), and the solid magnets 23 and 24 installed on the left and right sides are also fixed at all times. Will be.

Here, the solid magnets (21) and (22) apply a force in a direction of reducing distortion caused by the upper and lower parts of the screen by the Fleming's left-hand rule, and the solid magnets (23) and (24) installed on the left and right sides of the screen The force applied in the direction of reducing the distortion on the left and right by Fleming's left-hand law. The basic principle is to reduce the distortion in the same way as the general deflection yoke in FIG.

Rubber magnets 25 and 25 'are selectively inserted into and inserted into the insertion holes 20 and 20' to correct misconvergence displayed on the screen by the rubber magnets 25 and 25 '. Done.

In the case of the rubber magnet 25, when a magnetic field is formed from the N pole to the S pole, and the electron beams of the red (R1), green (G1), and blue (B1) signals flow from the front to the back, the force is applied by the Fleming's left hand law. Direction is applied.

Therefore, the red (R1) and blue (B1) beams are forced in the direction of the arrow to match the position of the green (G1) color beam to correct the misconvergence.

As a result, the rubber magnet 25 strengthens the PIN magnetic field around the screen.

In the case of the rubber magnet 25, when a magnetic field is formed from the N pole to the S pole, and the electron beams of the red (R2), green (G2), and blue (B2) signals flow from the front to the back, the force is controlled by the Fleming's left hand law. As it is applied to the red (R2) and blue (B2) color beams in the direction of the arrow, it is prevented from crossing with the position of the green (G2) color beams, so as to concentrate the positions of the three beams in one place. (barrel) The magnetic field is strengthened to prevent the cross beams cross each other to eliminate the misconvergence phenomenon.

In this way, a magnetic field and a barrel field can be generated by rubber magnets 25 and 25 'which are selectively inserted and fixed around the plurality of insertion holes 20 and 20' so that the three beams can be matched with each other at the outside of the screen. It is possible to eliminate the misconvergence phenomenon which is a big problem in the large wide-angle deflection yoke.

At this time, the pin magnetic field and the barrel magnetic field are generated by the directions of the N pole and the S pole in which the rubber magnet is inserted.

As described above, the present invention corrects the top and bottom and left and right distortion of the screen by a solid magnet which is always fixed to the coil separator up, down and left and right and pin magnet field or by a rubber magnet that is selectively inserted into a plurality of insertion grooves. By selecting the barrel magnetic field, you can easily perform the convergence correction that matches the three beams appearing on the outside of the screen to the desired state, and by forming an insertion groove in the front cover of the coil separator, it can be realized as a simple structure in which the rubber magnet is fixed. It is possible to provide a deflection yoke suitable for large wide angle monitors.

Claims (3)

Upper and hard distortion prevention main insertion holes 4 and the distortion insertion auxiliary insertion holes 6 are formed at the front cover of the coil separator 10, and the solid magnet 3 is provided at the main insertion hole 4, and the auxiliary insertion hole 6 is provided. In the large wide-angle deflection yoke in which the rubber magnet 5 is always inserted and fixed, the insertion holes 16, 17 formed on the upper and lower sides of the front cover and the insertion holes 16, 17 are fixed. Solid magnets 21 and 22; Insertion holes 18 and 19 formed on the left and right sides of the front cover and solid magnets 23 and 24 inserted into and fixed to the insertion holes 18 and 19; Distortion correction means consisting of a plurality of insertion grooves 20, 20 ', which are formed circumferentially around the insertion holes 16 to 19; Rubber magnets 25 and 25 'that are selectively inserted into and inserted into the insertion grooves 20 and 20'; A convergence correction device for deflection yoke, comprising: a convergence correction means composed of; The conveyor of claim 1, wherein the plurality of insertion grooves 20, 20 'formed circumferentially around the insertion holes 16 to 19 are formed at a predetermined angle α. Jones compensator. The rubber magnets 25 and 25 ', which are inserted into and fixed to the plurality of insertion grooves 20 and 20', have a pin magnetic field or barrel according to the insertion direction of the N pole and the S pole of the rubber magnet. Convergence correction device of the deflection yoke, characterized in that the magnetic field is formed.