JP2848792B2 - Magnetic correction piece for color shift correction - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic correction piece for correcting a color shift of an image caused by a non-uniform magnetic path in a deflection yoke of a CRT for a color television or a computer color display.

[0002]

2. Description of the Related Art Magnetic circuit distortion caused by non-uniform magnetic paths in a deflection yoke of a color television or a color cathode ray tube for a computer display causes disturbances in vertical and horizontal deflection characteristics, resulting in a color between a center portion and an end portion of an image. It appears as a shift or distortion phenomenon. As means for correcting such color shift or distortion, a composite magnetic material obtained by compounding a conventional ferrite powder was mounted on a coil of a deflection yoke, or a metal magnetic material was fixed to one end of an organic polymer film with an insulating tape. A method has been adopted in which a magnetic misalignment correction piece is mounted near the deflection yoke coil.

Specifically, as shown in FIG. 3, a double-sided adhesive tape is attached to one end of an organic polymer film 8 formed in a ribbon shape by mixing a synthetic magnetic material or a composite magnetic material piece 3 obtained by mixing a resin and a ferrite powder. 6, using a magnetic correction piece for correcting color misregistration constituted by sticking the double-sided adhesive tape 2 at a position of 3 mm or more and 20 mm or less inward from the other end, while adjusting color misregistration. The method of sticking it to the upper optimal part has been taken.

[0004] With the recent increase in definition of displays, correction of color misregistration has become an important issue. Conventionally, about five magnetic color correction pieces for color misregistration have been used, but recently, about ten magnetic correction pieces have been used. Has increased. As the amount of use of the magnetic correction piece increases, the space for mounting the magnetic correction piece on the polarizing yoke coil of the display becomes smaller, and as a solution to this problem, besides the conventional shape shown in FIG. An L-shaped magnetic correction piece as shown in a) has been adopted.

[0005] The L-shaped magnetic correction piece is a composite magnetic material piece 3 obtained by mixing a resin and ferrite powder at one end of an organic polymer film 10 formed in an L-shape using a double-sided adhesive tape 6. It is constituted by fixing and attaching the double-sided adhesive tape 2 to the other end.

Since the organic polymer film 10 has an L-shape, the production of a magnetic misalignment correction piece for correcting color misalignment requires the formation of an L-shaped color misalignment correction piece as shown in FIG. One side of the magnetic correction piece is aligned with the end of the organic polymer film, and a composite magnetic material piece 3 made of a mixture of resin and ferrite powder is fixed thereon using a double-sided adhesive tape 6 to fix the organic polymer film. Double-sided adhesive tape 2 at the other end
Paste. After the double-sided tape 2 is attached to an organic polymer film, the double-sided tape 2 is cut into a size as shown in FIG. After that, the desired L-shaped magnetic correction piece can be obtained by cutting into a predetermined L-shape.

[0007]

An L-shaped magnetic correction piece cannot be efficiently produced due to its shape. FIG. 4 (b)
As shown in the figure, unnecessary portions 9 are generated even when the ferrite powder is extracted from the organic polymer film by using a mold, and the composite magnetic piece 3 or the double-sided adhesive tape 2 obtained by mixing the synthetic rubber or the resin with the ferrite powder is also effective. However, it is difficult to supply inexpensively even though the demand for an L-shaped magnetic correction piece is increasing due to the high definition of the display due to the small number of parts that can be used for the display.

The present invention provides an inexpensive L-shaped magnetic correction piece by effectively utilizing a composite magnetic piece or a double-sided adhesive tape obtained by mixing an organic polymer film, synthetic rubber or resin and ferrite powder. The purpose is to do.

[0009]

In order to achieve the above object, the present invention provides an L-shaped organic polymer film formed by mixing a composite magnetic piece obtained by mixing a synthetic rubber or a resin with ferrite powder. In the magnetic correction piece for correcting color misregistration, which is formed by fixing a double-sided adhesive tape to the other end and attaching the double-sided adhesive tape to the other end, an organic polymer in which the ends of the composite magnetic piece and the double-sided adhesive tape are formed in an L-shape The film is arranged so as to be parallel to the line connecting the inside and outside of the film corner.

The present invention further provides a double-sided pressure-sensitive adhesive tape adhered along a predetermined surface of an organic polymer film, and a synthetic magnetic piece obtained by mixing a synthetic rubber or a resin and a ferrite powder on the double-sided pressure-sensitive adhesive tape. In the manufacture of a plurality of magnetic correction pieces for correcting color misregistration, a double-sided adhesive tape is attached in parallel to the other side of the film and then punched into an L-shape. And a method of manufacturing a magnetic correction piece for color misregistration correction, characterized in that adjacent L-shaped pieces are finely punched without gaps so that lines connecting the two pieces are parallel to both side edges of the film. .

[0011]

A composite magnetic piece obtained by mixing a synthetic rubber or a resin and a ferrite powder and a double-sided adhesive tape are mounted on an organic polymer film in advance, and then the L-shape is extracted. At this time, if the extraction direction is adjusted so that the corners of the L-shaped magnetic correction piece are in contact with each other, the production of the L-shaped magnetic correction piece can be performed at low cost and efficiently without waste of the organic polymer film or the like. Can be.

[0012]

Next, an embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 1A is an assembly view showing a method for producing a magnetic correction piece according to the present invention, and FIG. 1B is a shape diagram of an L-shaped magnetic correction piece according to the present invention.

In the production of the L-shaped magnetic correction piece, as shown in FIG. 1A, a synthetic rubber or resin and ferrite powder are mixed on an organic polymer film 1 using a double-sided adhesive tape 6. The composite magnetic piece 3 is stuck so as to be parallel to the side of the organic polymer film 1, and the double-sided adhesive tape 2 is stuck so as to be parallel to the side of the organic polymer film 1.

The inner and outer vertices of the L-shaped magnetic correction piece are in contact with each other, and a line connecting the inside and the outside of the corner of the L-shaped organic polymer film is parallel to the side of the organic polymer film 1. In addition, if the L-shaped pieces adjacent to each other are adjusted so that the L-shaped pieces become closely and densely without gaps, and the L-shaped pieces are extracted from the organic polymer film 1 so as to have the shape of the L-shaped magnetic correction piece, FIG. An L-shaped magnetic correction piece as shown in b) is completed.

In order to improve the workability when attaching the L-shaped magnetic correction piece on the cathode ray tube, a part of the organic polymer film existing outside the double-sided adhesive tape 3 attached to the completed magnetic correction piece is double-sided. The knob 7 may be provided by bending to the opposite side where the adhesive tape exists.

As shown in FIGS. 2A and 2B, L
It is not necessary to cut both ends of the L-shaped magnetic correction piece at right angles to the L-shaped extension as shown in FIG.
As shown in FIG. 7, the shape may be oblique to the extension.

[0018]

When the L-shaped magnetic correction piece is manufactured, the material can be supplied at low cost without wasting the material.

[Brief description of the drawings]

FIG. 1 is a conceptual drawing and a completed view of an L-shaped magnetic correction piece according to an embodiment of the present invention.

FIG. 2 is a conceptual drawing and a completed view of an L-shaped magnetic correction piece according to a further embodiment of the present invention.

FIG. 3 shows a conventional magnetic correction piece.

FIG. 4 is a view showing a shape and a manufacturing concept of a conventional L-shaped magnetic correction piece.

[Explanation of symbols]

1. Organic polymer film 2. 2. Double-sided adhesive tape for bonding CRT 3. Composite magnetic piece 4. L-shaped magnetic correction piece 5. A line connecting the inside and outside of the corner of the organic polymer film formed in an L shape. 6. Double-sided adhesive tape for bonding composite material pieces Knob part 8. 8. Conventional ribbon-type magnetic correction piece Unnecessary part 10. Conventional L-shaped magnetic correction piece

Claims (2)

(57) [Claims] 1. A composite magnetic piece obtained by mixing a synthetic rubber or a resin and a ferrite powder is fixed to one end of an L-shaped organic polymer film, and a double-sided adhesive tape is stuck to the other end. The end of the composite magnetic piece and the double-sided adhesive tape are parallel to the line connecting the inside and outside apexes of the corners of the L-shaped organic polymer film. A magnetic correction piece for correcting color misregistration 2. A double-sided pressure-sensitive adhesive tape is applied along a predetermined surface of an organic polymer film, and a synthetic magnetic piece obtained by mixing a synthetic rubber or a resin and a ferrite powder is applied on the double-sided pressure-sensitive adhesive tape. In the production of a plurality of color misalignment correction magnetic correction pieces consisting of sticking a double-sided adhesive tape in parallel to the other side of the film and then punching it into an L shape,
2. The method according to claim 1, wherein a line connecting both inner and outer vertices of the L-shaped corner is parallel to both side edges of the film, and adjacent L-shaped pieces are finely punched without gaps.
Method of manufacturing magnetic correction piece for correcting color misregistration described