KR20000001175U - Combined structure of deflection yoke permalloy correction piece - Google Patents

Abstract

The present invention relates to a permalloy correction piece coupling structure of the deflection yoke, a separator having a body portion between at least the neck portion to which the cathode ray tube is coupled and the flange portion mounted on the rear side of the CRT and the inner and outer circumferences of the body portion, respectively. In the permalloy correction piece coupling structure of the deflection yoke including a horizontal deflection coil and a vertical deflection coil, the equalization is attached to the upper outer periphery of the body portion adjacent to the neck portion so that the pincushion unbalance and the green characteristic are departed. Characterized in that it comprises a plurality of permalloy correction piece to compensate for. Accordingly, a permalloy correction piece for preventing reverse crossover and misconvergence from occurring depending on the mounted state or wound shape of the horizontal deflection coil and the vertical deflection coil is placed on the upper outer periphery of the separator body portion adjacent to the neck portion. By attaching at equal intervals, it is possible to actively compensate for deviations of pincushion unbalance and green characteristics, and has an excellent effect of realizing high quality images.

Description

Combined structure of deflection yoke permalloy correction piece

The present invention relates to the permalloy correction piece coupling structure of the deflection yoke, and more specifically, to prevent the reverse cross and misconvergence, etc. caused by the horizontal deflection coil and the vertical deflection coil mounted state or wound shape. The permalloy correction piece coupling structure of the deflection yoke which attached the permalloy correction piece performed at equal intervals to the upper outer periphery of the separator body part adjacent to a neck part is provided.

In general, a deflection yoke is a device for deflecting an electron beam emitted from an electron gun of a cathode ray tube, and includes a vertical deflection coil deflecting the electron beam in a vertical direction, a horizontal deflection coil deflecting the electron beam in a horizontal direction, the horizontal deflection coil and It consists of a separator that can precisely classify the position of the vertical deflection coil and can be electrically insulated from each other.

At this time, the electron beams of R (Red), G (Green), and B (Blue) emitted from the electron gun of the cathode ray tube are deflected at a predetermined angle by the deflection yoke and pass through the through holes formed in the shadow mask. By sealing the light on each stripe mounted on the inner circumference and emitting light, an image can be realized on the screen of a television.

A general deflection yoke performing the above function will be described with reference to FIG. 1.

1 is a perspective view showing a general deflection yoke.

As shown in FIG. 1, a conventional deflection yoke includes a separator 110 formed in a substantially trumpet shape, a vertical deflection coil (not shown) mounted on an outer circumference of the separator 110, and the separator 110. It consists of a horizontal deflection coil (not shown) mounted on the inner circumference of the.

In this case, the separator 110 has a neck portion 111 to which the cathode ray tube is coupled, a flange portion 112 mounted on the rear side of the CRT, and a body portion 113 provided between the neck portion 111 and the cathode ray tube. It is composed of

Meanwhile, the horizontal deflection coils and the vertical deflection coils respectively mounted on the inner and outer circumferences of the separator 110 perform a function of deflecting the R, G and B electron beams emitted from the electron gun of the cathode ray tube at a predetermined angle. In some cases, the deflection angle is shifted depending on the state or the wound shape, resulting in reverse crossover and misconvergence, thereby failing to realize a normal image.

In this case, a permalloy correction piece 10 usually made of an alloy such as nickel (Ni) and iron (Fe) is used, and the permalloy correction piece 10 has a thin flat plate shape of about one working piece. Molded to be used to the structure coupled to the upper surface of the neck 111.

However, the permalloy correction piece coupling structure of the deflection yoke according to the prior art prevents the deflection angle of the electron beam from being shifted according to the mounted state or the wound shape of the horizontal deflection coil and the vertical deflection coil, resulting in reverse crossover and misconvergence. Since the permalloy correction piece 10 is simply formed into a thin flat plate of one person and fixed to the upper surface of the neck portion 111, it is difficult to control the amount of YH, and the upper and lower pincushion unbalance (Pincushion) When unbalance occurs, it is difficult to properly adjust the tilt, resulting in a significant drop in image quality.

In particular, when the tilt is applied to the deflection yoke 100, the green characteristic is unbalanced in the up, down, left, and right directions, and thus the convergence characteristic is greatly reduced.

Accordingly, the present invention has been made to solve the above problems, the purpose of which is that reverse cross and misconvergence, etc. are caused depending on the mounted state or wound shape of the horizontal deflection coil and the vertical deflection coil. By improving the assembly structure of the permalloy correction piece that performs the function of preventing to provide a coupling structure of the permalloy correction piece of the deflection yoke that can actively respond to the amount of YH and the occurrence of up and down pincushion unbalance.

1 is a perspective view showing a deflection yoke to which the permalloy correction piece coupling structure according to the prior art is applied.

Figure 2 is a perspective view showing a deflection yoke applied to the permalloy correction piece coupling structure according to the present invention.

Explanation of symbols on the main parts of the drawings

100: deflection yoke 110: separator

111 neck portion 112 flange portion

113: body 120: horizontal deflection coil

130: Permalloy correction

The present invention for achieving the above object is a separator having a body portion between at least a neck portion and a flange portion mounted on the rear side of the cathode ray tube coupled to the cathode ray tube, and a horizontal deflection coil and vertically mounted on the inner and outer circumferences of the body portion, respectively. In the coupling structure of the permalloy correction piece of the deflection yoke including a deflection coil, a plurality of elements are provided at equal intervals on the upper outer periphery of the body portion adjacent to the neck portion to compensate for deviation of pincushion unbalance and green characteristics. It is a basic feature on the technical constitution that the two permalloy correction pieces are provided.

Hereinafter, a preferred embodiment of the permalloy correction piece coupling structure of the deflection yoke according to the present invention will be described with reference to FIG.

Figure 2 is a perspective view showing a deflection yoke to which the permalloy correction piece coupling structure according to the present invention is applied, the same name and the same reference numerals will be used for the same configuration having the same function as the conventional configuration.

First, as shown in FIG. 2, the deflection yoke 100 according to the present invention includes a separator 110 formed in a substantially trumpet shape, and a vertical deflection coil mounted on an outer circumference of the separator 110 (not shown). And a horizontal deflection coil 120 mounted on an inner circumference of the separator 110.

At this time, the separator 110 is a neck portion 111 to which the cathode ray tube is coupled, the body portion 113 for mounting the vertical deflection coil and the horizontal deflection coil 120 to the inner and outer peripheries, and is mounted on the rear of the CRT. Consisting of a flange portion 112.

In addition, a plurality of permalloy correction pieces 130 that compensate for deviation of pincushion unbalance and green characteristics are attached to the upper outer periphery of the body portion 113 adjacent to the neck portion 111 at equal intervals. .

Here, the permalloy correction piece 130 is actively attached to the outer periphery of the body portion 113 of the separator 110 adjacent to the neck portion 111 at equal intervals to actively respond to the amount of YH and the occurrence of up and down pincushion unbalance. To compensate for.

As described above, according to the coupling structure of the permalloy correction piece of the deflection yoke according to the present invention, a function of preventing reverse cross and misconvergence, etc. according to the mounted state or the wound shape of the horizontal deflection coil and the vertical deflection coil is prevented. By attaching the permalloy correction piece at equal intervals on the upper outer periphery of the separator body portion adjacent to the neck portion, it is possible to actively compensate for deviation of pincushion unbalance and green characteristics, thereby providing excellent image quality. It works.

Claims (1)

At least a separator having a body portion between the neck portion to which the cathode ray tube is coupled and a flange portion mounted on the rear side of the CRT, and a horizontal yoke and a vertical deflection coil mounted on the inner and outer circumferences of the body portion, respectively. In the correction piece coupling structure, Permalloy correction of the deflection yoke, comprising a plurality of permalloy correction pieces that are attached at equal intervals to the upper outer periphery of the body portion adjacent to the neck portion to compensate for deviation of pincushion unbalance and green characteristics. Piece coupling structure.