JPH0982241A - Color cathode ray tube with convergence correction function - Google Patents

Abstract

(57) [Summary] [Purpose] A color cathode-ray tube with a convergence correction function, which reduces the thickness of the portion wound around the neck of the color cathode-ray tube and obtains a convergence correction mechanism 5 that does not require extra labor when mounting. I will provide a. In a color cathode ray tube with a convergence correction function in which a convergence correction mechanism 5 is provided at a neck portion of the color cathode ray tube, the convergence correction mechanism 5 includes a coaxial cylindrical two-layer holder member 6 made of an insulating material and a two-layer holder member. And a coil member 7 that accommodates a plurality of printed coils that generate even-pole magnetic fields in the flexible film, and the coil member 7 is disposed in the flexible film. The print coils are stacked in groups so as to be insulated from each other, and adjacent print coils among the plurality of print coils are electrically connected inside the flexible film.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color cathode ray tube having a convergence correction function, and more particularly, a convergence correction mechanism provided at a neck portion of the color cathode ray tube is provided with a coaxial cylindrical two-layer holder member and two layers thereof. The present invention relates to a color cathode ray tube with a convergence correction function, which is constituted by a coil member that accommodates one or more sets of print coils that generate even-pole magnetic fields in a flexible film between the layers of a holder member, the coil members being housed in an insulating laminated state.

[0002]

2. Description of the Related Art Generally, when an image is displayed using a color cathode ray tube, a convergence correction mechanism is attached to the neck portion of the color cathode ray tube so that three electron beams corresponding to three colors emitted from an electron gun are produced. On the other hand, it is well known that the convergence correction mechanism performs static convergence correction.

By the way, although many kinds of convergence correction mechanisms for performing convergence correction have been already developed, recently, a plurality of spiral-shaped ones are provided on one surface and the other surface of one flexible support foil. A printed coil is formed, a plurality of spiral print coils are conductively connected to each other through a plurality of conductive openings provided in the flexible support foil, and the flexible support foil is attached to the neck portion of the color cathode ray tube. A convergence correction mechanism having a structure of winding in two or two windings has been developed, and an example thereof is disclosed in JP-A-6-223746.

The convergence correction mechanism having the above structure is
Since the plurality of spiral print coils are all of the air core type, it is possible to arrange the plurality of spiral print coils in close contact with the neck portion of the color cathode ray tube, and design the correction coil. In this case, a high degree of freedom in design and high sensitivity can be provided.

[0005]

However, the convergence correction mechanism disclosed in Japanese Patent Laid-Open No. 6-223746 mentioned above forms a plurality of spiral print coils on one surface and the other surface of one flexible supporting foil. After that, since the flexible support foil is wound around the neck portion of the color cathode ray tube once or twice, the flexible support foil can be wound around the neck portion of the color cathode ray tube. , The exposed spiral printed coil may come into contact with other conductive members or may cause damage to the printed coil when it comes into contact with other insulating members, among which flexible support foil Usually, the two spirally wound printed coils come into contact with each other when they are wound around the neck of the color cathode ray tube twice. Flexible support foil on one surface and /
Alternatively, an electrically insulating layer for preventing the spiral print coil from coming into contact with other members is provided on the other surface.

As described above, the above-mentioned Japanese Patent Laid-Open No. 6-223746.
In the convergence correction mechanism disclosed in No. 6, when a flexible support foil is wound around the neck portion of the color cathode ray tube to form the convergence correction mechanism, it is necessary to wind an electric insulating film so as to overlap the flexible support foil. Therefore, there is a problem that the thickness of the convergence correction mechanism becomes thicker by the amount of winding the electric insulating film, and moreover, when the flexible supporting foil is wound around the neck portion of the color cathode ray tube, the electric insulating film is simultaneously formed. There is a problem in that an extra manufacturing process of winding is required, and accordingly, it takes time to mount the convergence correction mechanism.

The present invention solves these problems, and an object thereof is to reduce the thickness of the portion wound around the neck portion of a color cathode ray tube and to provide a convergence which does not require extra labor at the time of mounting. An object of the present invention is to provide a color cathode ray tube with a convergence correction function that obtains a correction mechanism.

[0008]

In order to achieve the above object, the present invention provides a color cathode ray tube with a convergence correction function, which comprises a convergence correction mechanism at the neck portion of the color cathode ray tube, wherein the convergence correction mechanism comprises: A coaxial cylindrical two-layer holder member made of an insulating material;
And a coil member accommodating a plurality of printed coils that generate even-pole magnetic fields in a flexible film, the coil member being inserted and arranged between the outer layer and the inner layer of the two-layer holder member. Means for stacking the plurality of print coils in each group in a state where they are insulated from each other, and adjoining print coils of the plurality of print coils are electrically connected inside the flexible film. To have.

[0009]

According to the above-mentioned means, the coil member inserted and arranged between the outer layer and the inner layer of the coaxial cylindrical two-layer holder member is composed of a plurality of print coils which generate even-pole magnetic fields in the flexible film. Since each set is laminated while being insulated from each other, the thickness of the flexible film itself can be minimized even if the print coil is insulated and laminated inside. Even if it is wound around the neck portion of the cathode ray tube, its thickness can be made sufficiently smaller than that of a known flexible support foil wound together with an electric insulating film.

According to the above-mentioned means, any of the print coils is housed inside the flexible film, and the print coil itself does not come into contact with other constituent members. It is not necessary to wind an electric insulating film together with a flexible film like a foil, and accordingly, a convergence correction mechanism that does not require extra labor at the time of mounting can be formed. In this case, since the flexible film is inserted and arranged as the coil member between the outer layer and the inner layer of the coaxial cylindrical two-layer holder member, it is easy to arrange the coil member inside the two-layer holder member. Can be inserted and arranged.

[0011]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of a color cathode ray tube with a convergence correction function according to the present invention.

In FIG. 1, 1 is a panel portion, 2 is a funnel portion, 3 is a neck portion, 4 is a deflection yoke, and 5 is a convergence correction mechanism.

The tube body forming the color cathode ray tube includes a panel portion 1 arranged on the front side, a neck portion 3 accommodating an electron gun (not shown), and an intermediate portion between the panel portion 1 and the neck portion 3. And the funnel-shaped funnel portion 2 arranged in the. The panel portion 1 has a face plate on the front surface, and a fluorescent film (not shown) is formed on the inner surface of the face plate, and a shadow mask (not shown) is attached so as to be opposed to the fluorescent film. To be A magnetic shield (not shown) is provided at the joint between the panel 1 and the funnel 2, mainly inside the funnel, and a deflection yoke 4 is provided outside the joint between the neck 3 and the funnel 2. A convergence correction mechanism 5 is provided outside the device 3.

The image display operation in the color cathode ray tube according to the above construction is exactly the same as the image display operation in the known color cathode ray tube, and since such image display operation is well known in the art,
The description of the image display operation of the color cathode ray tube according to this embodiment is omitted.

2 is a block diagram showing an example of the convergence correction mechanism used in the color cathode ray tube shown in FIG. 1. FIG. 2 (a) is an exploded perspective view thereof.
2B is a cross-sectional view showing the cross-sectional structure of the AA line portion of FIG. 2A, and FIG. 2C is a BB line portion of FIG. 2A when the convergence correction mechanism is configured. It is sectional drawing which shows a cross-sectional structure.

In FIGS. 2A to 2C, 6 is a coaxial cylindrical two-layer holder member made of an insulating material, 6A is a brim portion, 7 is a coil member in which a plurality of print coils are housed in a flexible film, Reference numeral 8 is a ring-shaped two-pole magnet, 9 is a ring-shaped four-pole magnet, 10 is a ring-shaped six-pole magnet, 11 is a ring-shaped spacer, 12 is a ring-shaped fixing plate, and 13 is a tightening band.

Then, the coaxial cylindrical two-layer holder member 6 is provided.
Has a flange portion 6A at one end and a two-layer structure including an inner layer and an outer layer on the other end side, and has a coil member 7 wound around a space between the inner layer and the outer layer. Are stored. The outer peripheral portion of the outer layer of the two-layer holder member 6 includes a fixed plate 12, a pair of two-pole magnets 8, a spacer 11, a pair of four-pole magnets 9, a spacer 11, a pair of six-pole magnets 10, and a fixed plate 12. It is fitted in order, and finally the tightening band 13 is fitted, and the fixing plate 12 is tightened, whereby the entire ring-shaped magnet is semi-fixed in the outer peripheral portion of the outer layer of the two-layer holder member 6,
The convergence correction mechanism 5 is configured.

Next, FIG. 3 is a developed configuration diagram showing an example of the configuration of the coil member 7 used in the convergence correction mechanism 5 shown in FIG. 2, and FIG. 3 (a) generates a quadrupole magnetic field. A coil member, FIG. 3B shows a coil member that generates a sextupole magnetic field, and FIG. 3C shows a coil member that generates a dipole magnetic field.

In FIGS. 3A to 3C, 14 is 4
A coil member for generating a pole magnetic field, 14A is a first coil element for generating a quadrupole magnetic field, 14B is a second coil element for generating a quadrupole magnetic field, 15 is a coil member for generating a 6-pole magnetic field, and 15A is 6
First coil element for generating pole magnetic field, 15B is second coil element for generating 6 pole magnetic field, 16 is a coil member for generating 2 pole magnetic field, 16A is first coil element for generating 2 pole magnetic field, 16B is 2 pole magnetic field generating Second coil element, 17A, 17B, 17
C and 17D are print coils included in the first coil element 14A for quadrupole magnetic field generation, 18A, 18B, 18C and 18
D is a print coil included in the second coil element for quadrupole magnetic field generation 14B, 19A, 19B, 19C, 19D, 19
E and 19F are print coils included in the first coil element 15A for generating 6-pole magnetic field, 20A, 20B, 20C and 20.
D, 20E, and 20F are second coil elements 1 for generating 6-pole magnetic field
Print coils included in 5B, 21A and 21B are print coils included in the first coil element for bipolar magnetic field generation 16A, 22A and 22B are print coils included in the second coil element for bipolar magnetic field generation 16B, and 23 is adjacent. Conductive wire between the printed coils to be arranged, 24A, 24B is 4
Lead-out terminal of first coil element 14A for generating polar magnetic field, 25
A and 25B are the derivation terminals of the second coil element 14B for 4-pole magnetic field generation, 26A and 26B are the derivation terminals of the first coil element 15A for 6-pole magnetic field generation, and 27A and 27B are the second coil elements 15B for 6-pole magnetic field generation. Of the lead-out terminal, 28A, 28B is 2
Lead-out terminal of first coil element 16A for generating polar magnetic field, 29
Reference numerals A and 29B are lead-out terminals of the second coil element 16B for generating a two-pole magnetic field.

A coil member 1 for generating a quadrupole magnetic field
Reference numeral 4 denotes a quadrupole magnetic field generating first coil element 14A and a quadrupole magnetic field generating second coil element 14B which are arranged in a laminated state in one flexible film, and are printed with print coils 17A to 17D. The coils 18A to 18D are housed in a laminated state in one flexible film. Coil member 15 for generating 6-pole magnetic field
Is composed of a 6-pole magnetic field generating first coil element 15A and a 6-pole magnetic field generating second coil element 15B, which are also arranged in a laminated state in one flexible film. Coil 20A
To 20F are stored in a laminated state in one flexible film. Coil member 1 for generating a bipolar magnetic field
Similarly, 6 is composed of a first coil element 16A for generating a dipole magnetic field and a second coil element 16B for generating a dipole magnetic field, which are arranged in a laminated state in one film, and which are printed coils 21A to 21B. Print coils 22A to 22B
Are stored in a laminated state in one flexible film.

In this case, when the convergence correction mechanism 5 is attached to the neck portion of the color cathode ray tube, when the vertical direction of the color cathode ray tube is 0 ° and the clockwise angle is θ °, the quadrupole magnetic field is set. Generation first coil element 14A
4A, the print coil 17A is placed at a position of 0 ° and the print coil 17B is placed at 9 ° as shown in FIG.
The arrangement positions of the print coils 17A to 17D are set so that the print coil 17C is located at a position of 0 °, the print coil 17C is located at a position of 180 °, and the print coil 17D is located at a position of 270 °. In element 14B, as shown in FIG.
Print coil 18B is at 135 ° when A is at 45 °
At the position of the print coil 18C at 225 °,
So that the print coil 18D is at the 315 ° position,
Arrangement positions of the print coils 18A to 18D are set. Further, in the 6-pole magnetic field generating first coil element 15A, as shown in FIG. 4C, the print coil 19A is at a position of 0 ° and the print coil 19B is at a position of 60 °.
, The print coil 19C is at a position of 120 °,
The print coil 19D is at a position of 180 °, the print coil 19E is at a position of 240 °, and the print coil 19F is
Each print coil 19 so that
Arrangement positions A to 19F are set, and in the 6-pole magnetic field generating second coil element 15B, as shown in FIG. 4D, the print coil 20A is at a position of 30 ° and the print coil 20B is at a position of 90 °. Print coil 2 in the position
The print coil 20D is 21 at the position of 0C at 150 °.
The positions of the print coils 20A to 20F are set so that the print coil 20E is located at a position of 0 °, the print coil 20E is located at a position of 270 °, and the print coil 20F is located at a position of 330 °. Further, the first coil element 16 for generating a two-pole magnetic field
In FIG. 4A, as shown in FIG. 4E, the print coil 21A is placed at a position of 0 ° and the print coil 21B is placed at a position of 180 °.
To 21B are set, and the second position for generating the two-pole magnetic field is set.
In the coil element 16B, as shown in FIG. 4 (f), the print coils 22A to 22B are arranged so that the print coil 22A is located at a 90 ° position and the print coil 22B is located at a 270 ° position. Is set.

A quadrupole magnetic field generating first coil element 14A, a quadrupole magnetic field generating second coil element 14B, a sextupole magnetic field generating first coil element 15A, a sextupole magnetic field generating second coil element 15B, and two poles. First coil element for magnetic field generation 16A
In each of the second coil element 16B for generating a two-pole magnetic field, the adjacent print coils are conductively connected in the flexible film by the conductive wire 23. The quadrupole magnetic field generating first coil element 14A includes a lead terminal 24A connected to one end of the print coil 17A and a lead terminal 24B connected to one end of the print coil 17D. 14B is a lead-out terminal 25A connected to one end of the print coil 18A and a lead-out terminal 25 connected to one end of the print coil 18D.
B and. Six-pole magnetic field generating first coil element 15A
Includes a lead-out terminal 26A connected to one end of the print coil 19A and a lead-out terminal 26B connected to one end of the print coil 19F, and includes the second coil element 1 for generating a sextupole magnetic field.
5B includes a lead-out terminal 27A connected to one end of the print coil 20A and a lead-out terminal 27B connected to one end of the print coil 20F. The first coil element 16A for generating a two-pole magnetic field includes a lead-out terminal 28A connected to one end of the print coil 21A and a lead-out terminal 28B connected to one end of the print coil 21B. 16B includes a lead terminal 29A connected to one end of the print coil 22A and a lead terminal 29B connected to one end of the print coil 22B.

The convergence correction mechanism 5 of the present embodiment having the above-mentioned configuration is adjusted as follows, and the convergence correction is performed as follows.

First, the ring-shaped magnets fitted in the outer peripheral portion of the outer layer of the two-layer holder member 6 are adjusted in opening angle between the pair of ring-shaped four-pole magnets 9 and the pair of ring-shaped six-pole magnets 10. The magnetic field strength is set by, and a pair of ring-shaped quadrupole magnets 9
And the direction of each magnetic field is set by adjusting the rotation angle of the pair of ring-shaped 6-pole magnets 10,
The static convergence (beam focusing) of three electron beams corresponding to the three colors of green and red is adjusted, and similarly, the magnetic field strength is set by adjusting the opening angles of the pair of ring-shaped two-pole magnets 8. Also, the direction of each magnetic field is set by adjusting the rotation angle of the pair of ring-shaped two-pole magnets 8, and the purity (color purity) is adjusted. When each adjustment of the ring-shaped 4-pole magnet 9, 6-pole magnet 10 and 2-pole magnet 8 is completed, by tightening the fixing plate 12,
The ring-shaped magnet is held in a predetermined adjustment state.

Next, between the inner layer and the outer layer of the two-layer holder member 6, the coil member 14 for generating a quadrupole magnetic field, which is formed as one flexible film, is inserted in a wound state, Next, a coil member 15 for generating a sextupole magnetic field, which is configured as a single flexible film, is inserted onto the coil member in a wound state, and further, a flexible film is configured thereon. The coil member 16 for generating the two-pole magnetic field is inserted in a wound state.

At this time, in the coil member 14 for generating the quadrupole magnetic field, the quadrupole magnetic field generating first coil element 14A is used.
The print coils 17A to 17D of FIG.
The print coils 18A to 18D of the second quadrupole magnetic field generating second coil element 14B are set to have the angular positions shown in FIG. 4B, respectively. To set up. And 4
When the correction current modulated in synchronization with the horizontal deflection and vertical deflection of the three electron beams B, G, and R is supplied to the first coil element for polar magnetic field generation 14A through the lead-out terminals 24A and 24B, 4 A magnetic field as shown in FIG. 5A is generated by the first coil element for polar magnetic field generation 14A, and the left side (for blue) electron beam B is directed to the positive side in the vertical direction and the right side (for red) electrons. The beam R is moved to the negative side in the vertical direction. In addition, the second coil element 14 for generating a quadrupole magnetic field
Similarly, for B, 3 through the lead terminals 25A and 25B.
When the correction current modulated in synchronization with the horizontal and vertical deflections of the electron beams B, G, and R of the book is supplied, the magnetic field as shown in FIG. 5B is generated by the second coil element for quadrupole magnetic field generation 14B. Occurs, and the left side (for blue) electron beam B and the right side (for red) electron beam R are moved in the direction of the center (for green) electron beam G (positive side and negative side in the horizontal direction).

A coil member 15 for generating a sextupole magnetic field
4C, the print coils 19A to 19F of the first coil element for generating 6-pole magnetic field 15A are arranged and set so as to have the angular positions as shown in FIG. 4C, respectively. 15B print coil 20
Arrangements and settings are made so that each of A to 20F has an angular position as shown in FIG. Then, with respect to the first coil element for generating 6-pole magnetic field 15A, the lead-out terminal 26A,
When the correction current modulated in synchronization with the horizontal deflection and vertical deflection of the three electron beams B, G, and R is supplied via 26B, the 6-pole magnetic field generating first coil element 15A causes
A magnetic field as shown in (c) is generated, and the left side (for blue) electron beam B is directed toward the center (for green) electron beam G (horizontal positive side) and the right side (for red) electron beam. R is moved in a direction (horizontal positive side) away from the center (green) electron beam G. Also, 6
Similarly to the second coil element for polar magnetic field generation 15B, three electron beams B are provided via the lead-out terminals 27A and 27B.
When the correction current modulated in synchronization with the horizontal and vertical deflections of G and R is supplied, the second coil element 15 for generating the hexapole magnetic field 15
B produces a magnetic field as shown in FIG. 5 (d),
The left side (for blue) electron beam B and the right side (for red) electron beam R are respectively moved to the negative side in the vertical direction. Left side (for blue) by the coil member 14 that generates the quadrupole magnetic field and the coil member 15 that generates the hexapole magnetic field
By moving the electron beam B and the right side (for red) electron beam R, it is possible to correct the deviation of convergence over the entire surface of the fluorescent film, and it is possible to generate a high-quality display image.

Further, a coil member 1 for generating a bipolar magnetic field
6, the print coils 21A to 21B of the first coil element 16A for bipolar magnetic field generation are respectively shown in FIG. 4 (e).
Arrange and set so that the angular position is as shown in
Printed coil 2 of second coil element 16B for generating polar magnetic field
2A to 22B are arranged and set so as to have angular positions as shown in FIG. Then, with respect to the first coil element 16A for generating the two-pole magnetic field, the lead-out terminal 28
When the correction current is supplied via A and 28B, a magnetic field as shown in FIG. 5E is generated by the first coil element for bipolar magnetic field generation 16A, and the left side (for blue) electron beam B, the center Each of the (green) electron beam G and the right side (red) electron beam R is moved to the negative side in the horizontal direction. Further, when a correction current is supplied to the second coil element 16B for magnetic field generation by the derivation terminals 29A and 29B, the second coil element 16B for magnetic field generation generates
A magnetic field as shown in FIG. 5 (f) is generated, and the left side (for blue) electron beam B, the center (for green) electron beam G, and the right side (for red) electron beam R are respectively vertically positive sides. Move to. By moving the left side (for blue) electron beam B, the center (for green) electron beam G, and the right side (for red) electron beam R by the coil member 16 which generates a bipolar magnetic field, the entire surface of the fluorescent film is purified. Can be corrected, and a high-quality display image can be generated. By adjusting the correction current supplied to the coil member 16 that generates the bipolar magnetic field, the deterioration of the purity can be easily readjusted.

Next, FIG. 6 is a cross-sectional view showing an example of the arrangement of adjacent print coils and connection wires for conductively connecting them.

In FIG. 6, reference numerals 30A, 30B and 30C denote print coils disposed on the upper side, 31A and 31B denote print coils disposed on the lower side, and other components that are the same as those shown in FIG. Is attached.

Then, the print coils 30A, 30B,
30C is arranged on the upper side in one flexible film, and the print coils 31A and 31B are arranged on the lower side in the same flexible film.
0A, 30B, 30C and print coils 31A, 31B
Are laminated in a flexible film. Connection wires 23 are provided between the print coil 30A and the print coil 30B adjacent thereto, between the print coil 30B and the print coil 30C adjacent thereto, and between the print coil 31A and the print coil 31B adjacent thereto.
Is connected. In this case, as shown in FIG. 6, the connection wire 23 is provided in the flexible film at a position further lower than the position where the print coils 30A, 30B, 30C or the print coils 31A, 31B are arranged, and substantially 4 It has a layered structure.

With this structure, a plurality of print coils 30A to 30C are provided in one flexible film.
31A to 31B are laminated in groups so as to be insulated from each other, and a plurality of printed coils 30A to 30C, 3
The adjacent print coils 30A and 30B, 30B and 30C, 31A and 31B among 1A to 31B can be electrically connected in the flexible film by the connection wire 23.

As described above, according to the convergence correction mechanism 5 of the present embodiment, the coil member 7 inserted between the outer layer and the inner layer of the coaxial cylindrical two-layer holder member 6 is
Since a plurality of printed coils that generate even-pole magnetic fields are laminated in the flexible film in such a way that they are insulated from each other, even if the printed coils are insulated and laminated inside, the flexible film itself The thickness of the flexible film can be minimized, and even if this flexible film is wound around the neck portion 3 of the color cathode ray tube,
The thickness can be made sufficiently smaller than that of a known flexible support foil wound with an electric insulating film.

Further, according to the convergence correction mechanism 5 of the present embodiment, all the print coils are housed inside the flexible film, and the print coils themselves do not come into contact with other constituent members. Therefore, unlike the known flexible support foil, it is not necessary to wind the electric insulating film together with the flexible film, and accordingly, the convergence correction mechanism 5 can be formed without extra labor at the time of mounting. Since the flexible film is inserted and arranged between the outer layer and the inner layer of the coaxial cylindrical two-layer holder member 6 as the coil member 7,
When the coil member 7 is arranged inside the two-layer holder member 6, the coil member 7 can be easily inserted and arranged.

In the above embodiment, as the coil members, a coil member 14 for generating a 4-pole magnetic field, a coil member 15 for generating a 6-pole magnetic field, and a coil member 16 for generating a 2-pole magnetic field are used. I explained using
The coil member of the present invention is not limited to the case of using the coil member 14 that generates a 4-pole magnetic field, the coil member 15 that generates a 6-pole magnetic field, and the coil member 16 that generates a 2-pole magnetic field, and at least one of them is used. When used, that is, when only the coil member 14 that generates a quadrupole magnetic field is used, when only the coil member 15 that generates a six-pole magnetic field is used, and when only the coil member 16 that generates a two-pole magnetic field is used, a quadrupole magnetic field In the case of using the coil member 14 that generates a magnetic field and the coil member 15 that generates a sextupole magnetic field, the coil member 1 that generates a quadrupole magnetic field
The present invention also includes the case of using the coil member 16 for generating the 4- and 2-pole magnetic fields, and the case of using the coil member 15 for generating the 6-pole magnetic field and the coil member 16 for generating the 2-pole magnetic field.

In the above embodiment, the first coil element 14A for quadrupole magnetic field generation and the second coil element 14B for quadrupole magnetic field generation are replaced with the first coil element 15A for hexapole magnetic field generation and the sixth coil magnetic field generation. The second coil element 15B has been described by taking as an example the case where the first coil element 16A for generating a dipole magnetic field and the second coil element 16B for generating a dipole magnetic field are housed in a laminated state in one flexible film. However, the method of stacking and accommodating layers in the flexible film in the present invention is not limited to this example, and the first method for generating a quadrupole magnetic field
Coil element 14A and second coil element 14 for quadrupole magnetic field generation
B and B may be housed together in a flexible film together with the 6-pole magnetic field generating first coil element 15A and the 6-pole magnetic field generating second coil element 15B. Element 14A and quadrupole magnetic field generating second
The coil element 14B and the first coil element 16A for generating a 2-pole magnetic field and the second coil element 16B for generating a 2-pole magnetic field may be stacked and housed in one flexible film. The 1-coil element 15A and the 6-pole magnetic field generating second coil element 15B are stacked and housed in a single flexible film together with the 2-pole magnetic field generating first coil element 16A and the 2-pole magnetic field generating second coil element 16B. Alternatively, all coil elements 14A, 1
4B, 15A, 15B, 16A, and 16B may be stacked and stored in one flexible film.

[0038]

As described above in detail, according to the present invention, the coil member inserted and arranged between the outer layer and the inner layer of the coaxial cylindrical two-layer holder member is provided in the flexible film. Since a plurality of print coils that generate even pole magnetic fields are laminated in a state where they are insulated from each other, even if the print coils are insulated and laminated inside,
The thickness of the flexible film itself can be minimized, and even if this flexible film is wound around the neck of a color cathode ray tube, it can be wound with an electrically insulating film like a known flexible support foil. In comparison, there is an effect that the thickness can be made sufficiently thin.

Further, according to the present invention, any of the print coils is housed inside the flexible film, and the print coil itself does not come into contact with other constituent members. Since it is not necessary to wind an electric insulating film together with a flexible film like a foil, there is an effect that a convergence correction mechanism which does not require extra labor at the time of mounting can be formed. In this case, since the flexible film is inserted and arranged between the outer layer and the inner layer of the coaxial cylindrical two-layer holder member as the coil member, the flexible film can be easily inserted when the coil member is arranged in the two-layer holder member. There is also an effect that it can be placed.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of a color cathode ray tube with a convergence correction function according to the present invention.

FIG. 2 is a configuration diagram showing an example of a convergence correction mechanism used in the color cathode ray tube shown in FIG.

3 is a development configuration diagram showing an example of a configuration of a coil member used in the convergence correction mechanism shown in FIG. 2. FIG.

FIG. 4 is an explanatory diagram showing angular positions at which respective print coils are arranged in the coil member shown in FIG.

FIG. 5 is an explanatory diagram showing forces acting on three electron beams by a magnetic field generated by the print coil shown in FIG.

FIG. 6 is a cross-sectional view showing an example of a configuration of an arrangement state of adjacent print coils and connection wires for conductively connecting them.

[Explanation of symbols]

1 Panel Part 2 Funnel Part 3 Neck Part 4 Deflection Yoke 5 Convergence Correction Mechanism 6 Coaxial Cylindrical Two-Layer Holder Member 6A Flange Part 7 Coil Member 8 Ring-Shaped Two-Pole Magnet 9 Ring-Shaped Four-Pole Magnet 10 Ring-Shaped Six Pole magnet 11 Ring-shaped spacer 12 Ring-shaped fixed plate 13 Tightening band 14 Coil member for generating 4-pole magnetic field 14A First coil element for generating 4-pole magnetic field 14B Second coil element for generating 4-pole magnetic field 15 6-pole magnetic field Generated coil member 15A First coil element for 6-pole magnetic field generation 15B Second coil element for 6-pole magnetic field generation 16 Coil member for generating 2-pole magnetic field 16A First coil element for 2-pole magnetic field generation 16B Second-pole magnetic field generation Two-coil element 17A, 17B, 17C, 17D First for quadrupole magnetic field generation
Print coils 18A, 18B, 18C, 18D included in the coil element 14A Second for quadrupole magnetic field generation
Print coils 19A, 19B, 19C, 19D, 19E, 19F 6 included in the coil element 14B 6.
Print coils 20A, 20B, 20C, 20D, 20E, 20F 6 included in the first coil element for polar magnetic field generation 15A 6
Printed coils 21A and 21B included in the second coil element 15B for generating a polar magnetic field First coil element 16A for generating a 2-pole magnetic field
Second coil element 16B for generating 2-pole magnetic field
Included in coil 23 Conductive wire 24A, 24B First coil element 14A for quadrupole magnetic field generation
Derivation terminal 25A, 25B Quadrupole magnetic field generating second coil element 14B
Derivation terminal 26A, 26B First coil element 15A for generating 6-pole magnetic field
Derivation terminals 27A, 27B Second coil element 15B for generating 6-pole magnetic field
Derivation terminal 28A, 28B first coil element 16A for generating a two-pole magnetic field
Derivation terminal 29A, 29B second coil element 16B for generating a two-pole magnetic field
Derivation terminal of

Claims (4)

[Claims] 1. A color cathode ray tube with a convergence correction function, comprising a convergence correction mechanism at the neck portion of the color cathode ray tube, wherein the convergence correction mechanism comprises a coaxial cylindrical two-layer holder member made of an insulating material.
And a coil member accommodating a plurality of printed coils that generate even-pole magnetic fields in a flexible film, the coil member being inserted and arranged between the outer layer and the inner layer of the two-layer holder member. The plurality of print coils are laminated in a set in a state where they are insulated from each other, and adjacent print coils in the plurality of print coils are electrically connected inside the flexible film. A color cathode ray tube with a convergence correction feature. 2. The coaxial cylindrical two-layer holder member is characterized in that a plurality of ring-shaped magnets for generating at least one set of even-pole magnetic fields are fitted to the outer surface side of the outer layer via spacers. A color cathode ray tube with a convergence correction function according to claim 1. 3. The coil member is divided into two or more flexible films each containing a plurality of print coils, and these flexible films are composed of an outer layer and an inner layer of the two-layer holder member. The color cathode ray tube with a convergence correction function according to any one of claims 1 to 2, wherein the color cathode ray tube is laminated between them. 4. The coil member contains a plurality of print coils that generate any one or any two or all of a two-pole magnetic field, a four-pole magnetic field, and a six-pole magnetic field in the flexible film. The color cathode ray tube with a convergence correction function according to claim 1, wherein the color cathode ray tube has a convergence correction function.