JP2001250490A - Cathode ray tube - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a color cathode ray tube, which comprises an electron gun having a voltage dividing resistor having a stable, good voltage supplying capability. SOLUTION: This voltage dividing resistor comprises an insulated substrate, on which a resistive element pattern and a conductive film for a terminal connection have been formed, and a terminal having the first flange portion, a connecting piece, a tubular portion, and the second flange portion. A part of the first flange portion is composed of a convex part for an electrical connection with the conductive film for the terminal connection, and the second flange portion is duplex. By having the described configuration, the electrical connection between the terminal and the conductive film for terminal connection can be assured.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cathode ray tube for displaying images, and more particularly to a cathode ray tube provided with a voltage dividing resistor in an electron gun housed in its neck.

[0002]

2. Description of the Related Art A cathode ray tube for image display accommodates an electron gun for emitting a plurality of electron beams at one end of a vacuum envelope, and a phosphor screen having a plurality of phosphor films coated on the inner surface at the other end. Screen screen).

[0003] Many color cathode ray tubes are provided with a color selection electrode (for example, a shadow mask) which is installed close to a phosphor screen.

As the above-mentioned electron gun, a so-called in-line type electron gun which emits three electron beams in parallel on one plane is mainly used.

FIG. 14 is a perspective view illustrating the structure of a terminal portion of a voltage dividing resistor installed in an electron gun, and FIG. 15 is a partial view illustrating the structure of a terminal portion.

In the voltage dividing resistor 50, a resistor layer 22 having a predetermined resistance characteristic is formed on an insulating substrate 16.

The resistor layer 22 (resistor pattern)
A glass insulating film layer 17 is formed so as to cover.

A terminal 53 at one end of the voltage dividing resistor 50 is connected to a shield cup fixed to a sixth grid electrode,
A terminal 51 at the other end is connected to an electrode piece at a ground potential, and a terminal 52 provided in the middle is connected to the intermediate electrode 2.

As shown in FIG. 15, the terminal 51 has a metal eyelet 511 inserted into a terminal hole 15 which is a through hole provided in the insulating substrate 16 and is in contact with the terminal connection electrode 14. , And are caulked and fixed to the insulating substrate.

The connection piece 51C is formed integrally with the terminal 511.

FIG. 16 is a sectional view of the vicinity of the terminal 51.

A conventional built-in resistor is provided on the electrode side flange portion 5 in order to ensure that the terminal 51 and the connection electrode 14 are in contact with each other.
The entire 1A was in contact with the connection electrode. Also, terminal 5
In order to securely fix 1 to the insulating substrate, the insulating substrate-side flange portion 51D is configured such that its end faces outward with respect to the terminal hole 15.

A color cathode ray tube having a voltage dividing resistor of this type is disclosed in, for example, Japanese Utility Model Laid-Open Publication No.
38484 can be mentioned.

As a built-in resistor for a cathode ray tube having terminals fixed to an insulating substrate by caulking, Japanese Patent Application Laid-Open No. H5-2586
No. 80, JP-A-6-68811, JP-A-6-68811
No. 251901, JP-A-9-260119,
There is JP-A-9-298037.

[0015]

A metallic eyelet made of a hard metal such as stainless steel has a problem that it cannot be caulked sufficiently and stable electrical contact between the terminal and the conductive film cannot be obtained. there were.

As a countermeasure, it is conceivable to increase the load at the time of caulking. However, when the caulking load is large, the edge of the opening of the through hole of the insulating substrate is damaged.

In the prior art, the built-in resistor has a problem that the number of components to be used is large and component management and a manufacturing process are complicated.

It is an object of the present invention to provide a color cathode ray tube having an electron gun having a voltage dividing resistor having a stable and good voltage supply function by solving the above-mentioned problems of the prior art.

[0019]

SUMMARY OF THE INVENTION According to the present invention, a convex portion is formed on a surface of a side connecting a metal eyelet forming a terminal of a voltage dividing resistor to a conductive film, and is formed on a substrate by elasticity. The other surface of the metal eyelet has an end facing inward, making reliable electrical contact with the deposited conductive film.

With this configuration, the opening edge of the through hole of the insulating substrate is prevented from being lost, and the contact with the conductive film for terminal connection is improved. The concave portion of the flange absorbs a difference in thermal expansion from the insulating substrate due to a change in temperature, improves electrical connectivity, maintains a stable supply of focus voltage, and provides a highly reliable color cathode ray tube. .

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A typical configuration of the present invention is described as follows.

(1) an electron beam generator, a focusing accelerator for focusing and accelerating the electron beam toward the phosphor screen,
An insulating support rod for fixing the electron beam generating unit and the plurality of electrodes constituting the focusing acceleration unit in a predetermined order and at an interval, and supplying a required voltage having a different potential difference to the plurality of electrodes constituting the focusing acceleration unit. A color cathode ray tube containing an electron gun having a voltage dividing resistor attached to an insulating support rod, wherein the voltage dividing resistor has a resistor pattern formed on a surface of an insulating plate, and both ends of the resistor pattern and A metal formed of a conductive film for terminal connection formed in an intermediate portion and a cylindrical portion planted in the center of a concave portion of a dish-shaped flange portion having a connection piece integrally formed on an outer edge thereof and having one or a plurality of slits on a peripheral edge. The metal eyelet is provided as an external lead terminal, and the metal eyelet cylindrical portion is inserted into a through-hole provided so as to penetrate the terminal connection conductive film and the insulating plate and swaged, thereby forming the metal eyelet flange. Section and terminal connection And a conductive film was surface contact.

(2) An electron gun which has a phosphor screen and a shadow mask which functions as a color selection electrode, and which generates three in-line electron beams, is arranged in a neck portion, and an insulating material is provided in the neck. A resistor in which a resistor is formed in a substrate shape is arranged, the resistor has a connection electrode, the electrode is electrically connected to an electron gun by a metal terminal, and the terminal is a first terminal. It has a flange portion, a connection piece, a cylindrical portion, and a second flange portion, and the first and second flange portions caulk the resistor to establish electrical continuity with the resistor. , At least a portion of the first flange portion is bent in a direction toward the upper portion of the cylindrical portion to form a convex portion,
The convex portion is electrically connected to the resistor, and the second flange portion is double.

(3) A panel portion having a phosphor layer formed on an inner surface, a neck portion, and a funnel portion connecting the panel portion and the neck portion. The neck portion generates an electron beam. An electron gun that emits an electron beam toward the phosphor layer is included therein, the electron gun includes a resistor having a resistor formed on an insulating substrate, and the resistor has a connection electrode. The electrode is electrically connected to the electron gun via a metal terminal. The terminal is inserted into a through hole formed in the resistor, and has a first flange portion, a cylindrical portion having an opening, and a second portion. A flange portion, the resistor being fixed to the resistor by sandwiching the resistor between the first flange portion and the second flange portion, the second flange portion being folded, The end of the terminal located on the flange of It is facing.

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

FIG. 1 is a side view of an in-line type electron gun provided with a voltage-dividing resistor viewed from a direction perpendicular to the in-line.

The electron gun has an anode (sixth grid electrode) 1 to which the highest voltage (anode voltage) is applied, an intermediate grid electrode 2 to which a voltage divided by a voltage dividing resistor is supplied, and a cathode K. Fifth grid electrode group 3 including a plurality of electrodes constituting a main lens for converging the emitted electron beam
, A fourth grid electrode 4, a third grid electrode 5, a second grid electrode 6, and a first grid electrode 7.

Each of the electrodes 1 to 7 has a part of its outer edge embedded in a pair of insulating support rods 9 and is fixed at a predetermined order and at a predetermined interval.

Further, a shield cup 8 is attached to the sixth grid electrode 1.

A voltage dividing resistor 10 is mounted on one of the insulating support rods 9 for fixing the electrode group of the electron gun. This voltage dividing resistor 10 has external lead-out terminals (hereinafter simply referred to as terminals) 11, 12, and 13 for connection. Terminal 13
Is connected to the side wall of the shield cup 8 to which the anode voltage is applied, the terminal 12 is connected to the intermediate grid electrode 2, and the terminal 11 is grounded.

FIG. 2 is a sectional view taken along the line II of FIG.

12A is a first flange portion, 12B is a cylindrical portion, 12C is a connecting piece, 12D is a second flange portion, 14D.
Is a terminal connection electrode, 15 is a terminal hole penetrating the insulating substrate, 16 is an insulating substrate, and 17 is an insulating film.

The terminal 12 has a first flange 12A and a connecting piece 12C at one end. The first flange portion 12 </ b> A contacts the terminal connection electrode (hereinafter, referred to as connection electrode) 14 formed on the insulating substrate to establish electrical continuity. This connection electrode is formed of a conductive film.

A convex portion is formed on the surface of the first flange portion 12A in contact with the connection electrode 14. By bringing the protrusion into contact with the connection electrode 14, a stable contact can be obtained by the elastic action of the terminal 12. The edge of the first flange 12A faces outward with respect to the terminal hole 15.

The terminal 12 has a second flange 12D at the other end. The second flange portion 12D has a double structure that is folded back halfway. That is, the edge of the second flange 12D faces the center of the terminal hole 15. Since the second flange portion 12D has a double structure, the terminal 12 can be securely fixed. Further, the terminal 12 is fixed by sandwiching a resistor between the first flange portion 12A and the second flange portion 12D.

Therefore, stable electrical contact is ensured for a long time, a divided voltage can be reliably supplied to the focus electrode, and a highly reliable color cathode ray tube can be provided.

The terminal 12 has a cylindrical portion 12B between the first flange portion 12A and the second flange portion 12D. The second flange portion 12D is formed by folding a part of the cylindrical portion 12B.

The second flange portion 12D of the terminal 12
Is thinner than the insulating film 17. Therefore, contact of the terminal 12 with another electron gun component can be suppressed.

Further, the height L of the terminal 12 on the insulating support rod 9 side is higher than the height LG of the insulating film 17 on the insulating support rod 9 side (height LG <height L). By bringing the terminal 12 into contact with the insulating support rod 9, the insulating film and the insulating support rod 9 are separated.

In this embodiment, the terminal 12 on the side of the insulating support rod 9 is
The height L of the insulating film 17 on the side of the insulating support rod 9 is 0.13 mm, the terminal thickness LT of the terminal 12 on the side of the insulating supporting rod 9 is 0.13 mm, and the insulating film 17 on both sides is insulated. Substrate 1
6 is 1.17 mm.

By providing a gap between the insulating film 17 and the insulating support rod 9, the withstand voltage characteristics between the insulating film 17 and the insulating support rod 9 are improved.

In the knocking step, about 60 kV, which is about twice the normal voltage, is applied to the anode electrode, and electrodes other than the anode electrode and the intermediate electrode are grounded. When such a high voltage is applied to the anode electrode, the insulating film 17 and the insulating support rod 9
Can be prevented, and breakage of the insulating film 17 can be prevented. Further, since the terminal 12 is not in contact with the insulating film 17, it is possible to prevent the insulating film 17 near the terminal 12 from being damaged.

The terminal 11 also has an insulating support rod 9.
By setting the height of the terminal 11 on the side of the insulating support rod 9 higher than the height LG of the insulating film 17 on the side of the insulating support rod 9, the insulating support rod 9 and the insulating film 17 are formed.
The contact portion with the contact can be eliminated. Since the insulating support rod 9 and the insulating film 17 do not contact each other, it is possible to prevent the voltage dividing resistor 10 from being damaged.

Further, since the knocking voltage applied to the anode can be made sufficiently high, foreign substances adhering to the electron gun can be removed.
It is possible to obtain a cathode ray tube displaying a better image.

FIG. 3 is a plan view of a metal eyelet 121 before forming the terminal 12 of FIG. FIG. 4 is a sectional view taken along line HH of FIG.

The metal eyelets 121 constituting the terminal 12 are as follows:
It has a dish-shaped first flange portion 12A integrally formed with a connection piece 12C on the outer edge. It also has a cylindrical portion 12B erected in the center of the concave portion of the flange portion 12A.

A convex portion is formed on the surface of the first flange portion 12A in contact with the connection electrode. When the protrusion contacts the connection electrode 14, stable contact can be obtained by the elastic action of the terminal 12.

The bending angle θ of the first flange portion 12A is 0
Greater than 45 ° and less than 45 ° is preferred. Preferably, 5 ° to 2
0 ° is good.

The metal eyelets 121 are formed on the first flange 12A.
(The end of the tubular portion 12B) faces inward with respect to the tubular portion. That is, the end faces the center direction of the terminal hole 15.

The inner diameter of the terminal 12 differs between the first flange side and the end side.

FIGS. 5 to 7 show steps of forming the terminal of the present invention. 18 is a caulking stand. The caulking table 18 has a shaft center 19 into which the metal eyelet cylindrical portion 12B is inserted.

FIG. 5 shows a state where the eyelets 121 and the resistive substrate 101 are set on the caulking table 18. The resistance substrate 101 has a resistance and a connection electrode 1 on an insulating substrate 16 made of alumina.
4. A terminal hole 15 is formed. The resistance and a part of the connection electrode are covered with glass 17 (for example, lead borosilicate glass).

Bending work (hereinafter referred to as swaging work)
At this time, the cylindrical portion 12B is inserted into the terminal hole 15 penetrating the insulating substrate such that the flange portion 12A of the metal eyelet 121 constituting the terminal comes into contact with the connection electrode.
At this time, the tip of the cylindrical portion 12B protrudes from the insulating substrate.

The caulking operation is performed in two stages.

FIG. 6 is a diagram for explaining the first stage caulking operation. In the first stage of caulking work, eyelets 121
A crimping tool (hereafter, referred to as a spherical punch) 20 having a spherical portion is used. A load is applied to the upper part of the cylindrical portion 12B by the spherical punch 20. By this operation, the upper part of the cylindrical portion 12B is deformed.

Since the tip of the punch 20 has a curved surface having a curvature R, the upper portion of the cylindrical portion 12B is deformed so that the middle portion thereof projects outward with respect to the terminal hole 15. On the other hand, the end 12F of the cylindrical portion faces the terminal hole direction.

In the above embodiment, the cylindrical portion 12 of the eyelet 121
Since B has a cylindrical shape, a spherical punch was used. However, it is sufficient that the punch has a curvature adapted to the shape of the cylindrical portion.

FIG. 7 is a diagram for explaining the caulking operation at the second stage. Reference numeral 21 denotes a caulking tool used in the second-stage caulking operation. The portion that comes into contact with the eyelets 121 is flat.

After using the spherical punch, the upper part of the cylindrical portion 12B is further deformed by using a flat crimping tool (flat punch) 21 shown in FIG.

As described above, the terminal 12 shown in FIG.
Can be obtained.

In the deformed eyelet 121, the end of the cylindrical portion 12B (the end of the eyelet 121) 12F is oriented in the direction of the terminal hole, and forms a second flange portion 12D having a double structure.

At this time, the convex portion 1 of the first flange 12A
2E is in contact with the connection electrode.

The cylindrical portion 12B of the eyelet 121 is not limited to a cylindrical shape, but may be a square pole.

As described above, the resistor having the terminal 12 formed by the two caulking operations did not cause fine chipping. Since the caulking operation is performed in multiple times,
The load at the time of swaging can be reduced.

FIG. 8 is a top view of another metal eyelet 122.

A plurality of slits 12G are formed on the peripheral edge of the flange portion 12A, and a connection piece 12C is integrally formed on a part of the edge. This slit 12G is formed at a position symmetrical to the longitudinal center axis of the connection piece 12C.

The cylindrical portion 12B of the metallic eyelet 122 is inserted into the insulating substrate of the voltage dividing resistor and the through-hole of the connection electrode 14 in the same manner as described with reference to FIGS. The terminal 12 using the metal eyelet 122 has an angle θ at the first flange portion 12A. Due to the angle θ, the connection electrode 14 and the terminal 12 are surely in contact with each other.

At this time, the presence of the slit 12G allows the flange portion 12 to be formed without increasing the caulking load.
Sufficient contact is obtained between A and the conductive film for terminal connection.
That is, by forming the slit 12G, the elastic strength of the first flange portion 12A can be adjusted, and stable contact can be obtained.

A slit was provided in the flange portion of the metal eyelet constituting the terminal of the voltage dividing resistor so that the caulking load could be reduced. This configuration eliminates the need for heat treatment, reduces the caulking load on the flange portion of the metal eyelet, prevents loss of the opening edge of the through hole of the insulating substrate, and improves contact with the conductive film for terminal connection.

Therefore, by using an electron gun having a voltage-dividing resistor having this terminal configuration, a color cathode ray tube with higher reliability can be obtained.

FIG. 9 is a top view of another metal eyelet 123.

In this configuration example, the slit 12G is formed at a position symmetrical with respect to the longitudinal center axis of the connecting piece 12C. With this configuration, the efficiency of press punching in eyelet manufacturing can be increased.

The slit 12 formed in the flange portion 12A
The position of G is not particularly limited. The number of the slits 12G may be at least one, but it is preferable to set the number to three as in the embodiment from the viewpoint of the load balance at the time of caulking and the connection strength.

Therefore, stable electrical contact is ensured for a long time, a divided voltage can be reliably supplied to the focus electrode, and a highly reliable color cathode ray tube can be provided.

FIG. 10 is a plan view for explaining an example of the actual shape of the voltage dividing resistor used in the color cathode ray tube according to the present invention.

The resistor pattern 22 has a bent and folded pattern as shown in the figure in order to obtain a required voltage value on a limited plane of the insulating substrate 16.

By using this voltage dividing resistor 10,
The electrical connectivity is improved, the supply of a stable focus voltage is maintained, and a highly reliable color cathode ray tube is obtained.

FIG. 11 is a side view of a main part of the color cathode ray tube shown in FIG. 11, and FIG. 12 is a side view of the electron gun shown in FIG.

FIG. 11 is a schematic sectional view for explaining the structure of a cathode ray tube to which the present invention is applied.
Is a neck portion, 32 is a funnel portion connecting the panel and the neck, 34 is a phosphor screen formed on the inner surface of the panel portion to constitute a video display surface, 35 is a shadow mask as a color selection electrode, and 36 is an external magnetic field. 37, a deflection yoke for deflecting the electron beam disposed in the funnel section horizontally and vertically, and 38, which is housed in the neck and emits three electron beams B in a horizontal row (inline). An electron gun 39 is a magnetic device for performing color purity and centering correction.

In the structure shown in FIG. 10, a vacuum envelope is formed by the panel section 31, the neck section 33 and the funnel section 32, and the electron beam B emitted from the electron gun 38 is deflected by the deflection yoke 37. To deflect in two directions, horizontal and vertical, to scan the phosphor screen 34 two-dimensionally.

FIG. 12 is a cross-sectional view when the electron gun of FIG. 1 is housed in the neck portion 33 of the vacuum envelope of the color cathode ray tube.

Reference numeral 40 denotes a stem pin for supplying a required signal to each electrode.

One end of a contact spring 41 is welded to the front side surface of the shield cup 8.

On the inner wall of the vacuum envelope, an anode voltage (maximum voltage) introduced from an anode button (not shown) provided in the funnel portion is extended to a part of the neck portion to supply the electron gun with the anode voltage. As described above, the interior conductive film 42 such as graphite is applied, and the other end of the contact spring 41 is elastically contacted with the interior conductive film 42 to supply the anode voltage to the sixth grid electrode 1.

The connecting piece 13 C extending from the terminal 13 is welded to the side surface of the shield cup 8.

Further, a connecting piece 12C is pulled out from the terminal 12 and welded to the intermediate grid electrode 2, and a high voltage obtained by dividing the anode voltage by a resistance ratio is supplied to the intermediate electrode 2.

Then, the terminal 11 is connected to a metal piece embedded in the insulating support rod 9 via a connection piece 11C. The metal piece is connected to one of the stem pins 40, and is connected to a potential (ground potential) such as ground outside the cathode ray tube through the stem pin 40.

The present invention is not limited to the above configuration, and various modifications can be made without departing from the technical idea of the present invention, and a color cathode ray provided with an electron gun for emitting a plurality of electron beams. The present invention is not limited to a tube, and can be similarly applied to various types of cathode ray tubes that emit a single electron beam and that include, for example, a projection cathode ray tube and other electron guns having a voltage dividing resistor.

FIG. 13 is a view showing an embodiment of a projection type cathode ray tube. The upper part is a half sectional view of a main part, and the lower part is a half side view of a main part. The present invention is also applicable to the case of a built-in resistor when one cathode ray tube has one electron gun.

In general, the projection type cathode ray tube is arranged at a position separated by a required distance from the projection screen, and the reproduced image on the face plate panel surface of the projection type cathode ray tube is projected on the projection screen surface, and is enlarged from the reproduced image. Widely used in a so-called video projection device for obtaining a projected image.

In the figure, an electron gun 381 for emitting, controlling, accelerating, and converging an electron beam B is housed inside a neck portion 331 of a glass bulb. Panel part 3
11, a monochromatic phosphor screen 341 is formed on the inner surface of the phosphor. The electron beam B emitted from the electron gun 381 is horizontally and around the funnel portion of the glass bulb.
A deflection yoke 371 for deflecting in the vertical direction is attached, and makes the fluorescent screen 341 emit light.

Further, in the above embodiment, the terminal 12 has been described, but the terminals 11 and 13 may have the same configuration.

Further, in the above embodiment, the case where the number of terminals is three has been described, but the present invention is not limited to this.

[0094]

As described above, according to the present invention in which the slits of the flange portions of the metal eyelets constituting the terminals of the voltage-dividing resistor are provided, it is possible to sufficiently contact the terminal-connecting conductive film with a small caulking load. Because surface contact is obtained, and positional deviation due to changes in operating temperature is reduced, and electrical connectivity is improved,
A stable supply of the focus voltage is maintained for a long time, and a highly reliable color cathode ray tube can be obtained.

[Brief description of the drawings]

FIG. 1 is a top view of an electron gun of a color cathode ray tube according to the present invention.

FIG. 2 is a sectional view taken along line II of FIG.

FIG. 3 is an explanatory diagram of one example of a metal eyelet constituting a terminal of a voltage dividing resistor provided in an electron gun of a color cathode ray tube according to the present invention.

FIG. 4 is a sectional view taken along line HH of FIG. 3;

FIG. 5 is an explanatory diagram of a caulking step of a metallic eyelet constituting a terminal.

FIG. 6 is an explanatory diagram of a caulking step of a metallic eyelet constituting a terminal.

FIG. 7 is an explanatory diagram of a caulking step of a metallic eyelet constituting a terminal.

FIG. 8 is an explanatory view of another example of a metal eyelet constituting a terminal of a voltage dividing resistor provided in an electron gun of a color cathode ray tube according to the present invention.

FIG. 9 is an explanatory view of another example of a metal eyelet constituting a terminal of a voltage dividing resistor provided in an electron gun of a color cathode ray tube according to the present invention.

FIG. 10 is a plan view illustrating an example of an actual shape of a voltage dividing resistor used in a color cathode ray tube according to the present invention.

FIG. 11 is a sectional view of a color cathode ray tube according to the present invention.

FIG. 12 is a side view of a main part of a color cathode ray tube accommodating an in-line type electron gun having a voltage dividing resistor.

FIG. 13 is a partial sectional view of a projection type cathode ray tube according to the present invention.

FIG. 14 is a perspective view illustrating a configuration of a terminal portion of a voltage dividing resistor.

FIG. 15 is a partial view illustrating a configuration of a terminal unit.

FIG. 16 is a cross-sectional view illustrating a configuration of a conventional terminal portion.

[Explanation of symbols]

 Reference Signs List 10 voltage dividing resistor 11, 12, 13 external lead-out terminal (metal eyelet) 12A first flange portion 12B cylindrical portion 12C connecting piece 12D second flange portion 12E convex portion 12F end portion 12G slit 14 terminal connection electrode Reference Signs List 16 insulating substrate 17 insulating film layer 22 resistor pattern

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Sakae Ishii 3350 Hayano, Mobara-shi, Chiba Prefecture Within Hitachi Electronics Devices Co., Ltd. (72) Hisao Nakamura 3300 Hayano, Mobara-shi, Chiba Display Group, Hitachi, Ltd. (72) Inventor Satoru Miyamoto 3300 Hayano Mobara-shi, Chiba F-term in the Display Group, Hitachi, Ltd. (reference) 5C041 AA03 AA08 AB14 AC14 AE01

Claims (12)

[Claims] 1. A cathode ray tube having a phosphor screen, a shadow mask acting as a color selection electrode, and an electron gun for generating three in-line electron beams arranged at a neck portion, wherein the neck has A resistor in which a resistor is formed on an insulating substrate is arranged, the resistor has a connection electrode, and the electrode is electrically connected to an electron gun with a metal terminal, and the terminal is A first flange portion, a connecting piece, a tubular portion, and a second
The first flange portion and the second flange portion are electrically connected to the resistor by caulking the resistor with the first flange portion and the second flange portion. At least a part of the first flange portion is A cathode ray tube, wherein the projection is bent in the direction of the upper part of the tubular portion to form a projection, the projection is electrically connected to the resistor, and the second flange is double. 2. The method according to claim 1, wherein the first flange portion is bent near a root of the cylindrical portion, and an end of the first flange portion is electrically connected to the electrode. CRT. 3. The cathode ray tube according to claim 2, wherein a bending angle of the first flange portion is larger than 0 ° and smaller than 45 ° with respect to a substrate surface of the electrode. 4. The electrode according to claim 3, wherein a bending angle of the first flange portion is 5 ° to 20 ° with respect to a substrate surface of the electrode.
° CRT. 5. A panel having a phosphor layer formed on an inner surface thereof, a neck, and a funnel connecting the panel and the neck. The neck generates an electron beam to generate the electron beam. In a cathode ray tube including an electron gun that emits an electron beam toward a phosphor layer, the electron gun includes a resistor having a resistor formed on an insulating substrate, and the resistor has a connection electrode. The electrode is electrically connected to an electron gun via a metal terminal, and the terminal is inserted into a through hole formed in the resistor, and has a first flange portion and a cylindrical portion having an opening. And the second flange portion is fixed to the resistor by sandwiching the resistor between the first flange portion and the second flange portion, and the second flange portion is folded back. The end of the terminal located on the second flange is Cathode ray tube, characterized in that facing the center of the hole. 6. The cathode ray tube according to claim 5, wherein the opening of the terminal has an inner diameter on the second flange side smaller than the inner diameter of the opening on the first flange side. 7. The cathode ray tube according to claim 5, wherein an end of the terminal located on the second flange is located closer to the center of the through hole than the cylindrical portion. 8. The cathode ray tube according to claim 5, wherein said electron gun emits a single electron beam, and said phosphor screen is formed of a single phosphor. 9. An electron gun according to claim 5, wherein said electron gun emits three in-line electron beams, and said phosphor screen has three lines.
A cathode ray tube comprising a phosphor layer of a color. 10. The method according to claim 5, wherein the first flange portion is bent from near a root of the cylindrical portion, and an end of the first flange portion is electrically connected to the electrode. CRT. 11. The cathode ray tube according to claim 5, wherein a bending angle of the first flange portion is larger than 0 ° and smaller than 45 ° with respect to a substrate surface of the electrode. 12. The electrode according to claim 5, wherein a bending angle of the first flange portion is 5 ° to 2 ° with respect to a substrate surface of the electrode.
A cathode ray tube characterized by being at 0 °.