JPH0547323A - Flat plate image display device - Google Patents

Abstract

(57) [Abstract] [Purpose] In fixing the electrode unit, the compression stress acting on the electron beam control electrode due to the axial thermal contraction of the fixing pin and the electron due to the expansion difference of each electron beam control electrode due to the heat generation of the linear hot cathode Prevents deformation of the beam control electrode. [Structure] In the electrode unit 5, the electron beam control electrodes 10 to 14 are inserted and laminated into a fixed pin 17 via an insulating spacer 15, and further, a fixed insulating spacer 16 and a fixing means 19 formed of a shape memory alloy are fixed pin 17. To insert. Here, the fixing means 19 formed of a shape memory alloy is
The inner diameter of the fixing pin is smaller than the diameter of the fixing pin by a predetermined size, the shape is memorized in that state, and the diameter is expanded so that the fixing pin can be inserted. After inserting the fixing means 19 into the fixing pin 17, a small amount of heat is applied to the fixing means 19 while applying a predetermined pressing force.
Is restored to the shape stored in advance and is fixed to the fixing pin 17 by crimping.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat panel image display device used for a television receiver, a computer terminal display and the like.

[0002]

2. Description of the Related Art In recent years, as a flat panel image display device, a method using liquid crystal, a method utilizing light emission by plasma discharge, a method of emitting a phosphor using an electron beam as in a conventional cathode ray tube, and the like have been developed. Is being carried out. we,
We are developing a flat panel image display device that displays an image by a method of emitting a phosphor using an electron beam.

An example of the above-described conventional flat panel image display device will be described below with reference to the drawings.

In the conventional flat panel image display device, the electron beam control electrodes are insulated and fixed with a predetermined interval between the electron beam control electrodes using low melting point solder glass. In this configuration, the capacitance between the electron beam control electrodes increases, so that not only the power consumption during driving increases, but also
The influence on the control of the electron beam was also large, and an effective flat panel display device could not be obtained.

In order to solve the above problems, the present applicant proposed a flat panel image display device in Japanese Patent Application No. 1-307034. In this image display device, the insulating spacing holding member of each electron beam control electrode is a ring-shaped insulating spacer, and by partially disposing this between the electron beam control electrodes, the area of the insulating spacing holding member is reduced, The capacitance between the electron beam control electrodes is reduced.

In Japanese Patent Application No. 1-307034, a fixing pin made of metal is fixed to an electron beam control electrode arranged opposite to the phosphor screen by welding or the like, and the fixing pin has the ring-shaped insulation. An electron beam control electrode is inserted and laminated through a spacer, and a fixed pin head is melted by a laser or the like through a fixed insulating spacer to fix the electrode unit.

The flat-panel image display device of the above-mentioned Japanese Patent Application No. 1-307034 will be described below with reference to the drawings.

FIG. 21 shows a fixed structure of electron beam control electrodes of a conventional flat panel image display device. Reference numeral 101 is a face plate having a phosphor screen 102 formed on its inner surface. Reference numeral 103 is a linear hot cathode of an electron beam generation source, and 104 is an electrode unit. The electrode unit 104 is composed of electron beam control electrodes 105, 106, 107, 108, ring-shaped insulating spacers 109, 110, 111, fixed insulating spacers 112, and fixed pins 113 made of metal. The fixed pin 113 is fixed to the electron beam control electrode 108 by butt welding. Fixed pin 113
The electron beam control electrodes 107, 106, 105 are insulated and held at predetermined intervals via the insulating spacers 111, 110, 109, and the fixed insulating spacer 112 is inserted into the fixed pin 113 protruding from the electron beam control electrode 105. The electrode unit 104 is fixed by melting the head of 113 with a laser or the like.

The operation will be described below. Electron beam control electrodes 105 to 108 have electron beam passage holes or slits formed therein, and the linear hot cathode 103
The electron beam emitted from (extending in the direction perpendicular to the paper surface) is controlled, focused and deflected by the voltage applied to each electron beam control electrode while passing through these passage holes or slits, and high voltage is applied. The image is displayed by reaching the phosphor screen 102 to which is applied and selectively causing the phosphor to emit light.

[0010]

However, in the above structure, when the fixed pin head is melted, the melted portion is cooled to room temperature and solidified while contacting the fixed insulating spacer 112 by its own weight. At this time, the fixed pin 113 has its fixed length regulated in a state of being expanded by the heat of fusion.
The fixing pin contracts when the temperature returns to room temperature. Therefore, the electron beam control electrode unit is fixed in a state where compressive stress acts on the electron beam control electrodes stacked via the insulating spacers 112.

Particularly, since the electron beam control electrode arranged on the phosphor screen is formed of strip electrodes, the strip electrodes are deformed. Further, when a current is passed through the linear hot cathode 103 to generate an electron beam, the heat not only raises the temperature of the electron beam control electrode, but also causes a temperature difference between the electron beam control electrodes.
For this reason, if the electron beam control electrode is firmly fixed, the electron beam control electrode is deformed due to the difference in expansion due to heat generation of the linear hot cathode.

Therefore, due to the deformation of the electron beam control electrode due to both the compressive stress generated by the fixing pin melting and the difference in thermal expansion, landing deviation of the electron beam occurs,
There is a problem that a good image cannot be displayed.

In view of the above problems, the present invention is a flat panel type image display device capable of displaying a good image without generating compressive stress in the electron beam control electrode and by fixing the electron beam control electrode capable of absorbing the difference in expansion. The purpose is to provide.

[0014]

In order to solve the above problems, a flat panel image display device of the present invention comprises a back electrode unit including a back electrode, an electron beam generating source, and a plurality of electron beam control electrodes. An electron beam control electrode that includes the formed electrode unit and a face plate on which a phosphor screen is formed, is arranged so as to face the phosphor screen and has a plurality of fixing pins fixed thereto, and has a through hole for the fixing pin. A plurality of electron beam control electrodes, an insulating spacer which is inserted into the fixed pin and holds the electron beam control electrodes at a predetermined distance, and an electron beam control electrode which is arranged so as to face the electron beam generation source. It is formed of a fixed insulating spacer inserted into the fixed pin and a shape memory alloy inserted into and fixed to the fixed pin protruding from the fixed insulating spacer. In which the electrode unit is composed of the fixing means.

Alternatively, the phosphor screen includes a back electrode unit including a back electrode, an electron beam generation source, an electrode unit formed of a plurality of electron beam control electrodes, and a face plate on which a phosphor screen is formed. And an electron beam control electrode having a plurality of fixing pins fixed to face each other, a plurality of electron beam control electrodes having through holes of the fixing pins, and the electron beam control electrodes inserted into the fixing pins to have a predetermined size. An insulating spacer held at a distance of, and the electrode unit is composed of a fixed insulating spacer inserted into the fixed pin protruding from the electron beam control electrode arranged facing the electron beam generation source,
After fixing a plurality of electron beam control electrodes by inserting a shim having a predetermined thickness between the fixed insulating spacer and the electron beam control electrode and melting the head of the fixing pin protruding from the fixed insulating spacer. It is constructed by removing the above-mentioned shim.

Alternatively, the phosphor screen includes a back electrode unit including a back electrode, an electron beam generation source, an electrode unit formed of a plurality of electron beam control electrodes, and a face plate on which a phosphor screen is formed. And an electron beam control electrode having a plurality of fixing pins fixed to face each other, a plurality of electron beam control electrodes having through holes of the fixing pins, and the electron beam control electrodes inserted into the fixing pins to have a predetermined size. An insulating spacer held at a distance of, and the electrode unit is composed of a fixed insulating spacer inserted into the fixed pin protruding from the electron beam control electrode arranged facing the electron beam generation source,
Forming a spacer layer on at least one layer of the electron beam control electrode, the insulating spacer, and the fixed insulating spacer;
After the fixing of the plurality of electron beam control electrodes by melting the head of the fixing pin protruding from the fixing insulating spacer, the spacer layer is removed by heating, washing, or the like.

Alternatively, the phosphor screen includes a back electrode unit including a back electrode, an electron beam generation source, an electrode unit formed of a plurality of electron beam control electrodes, and a face plate having a phosphor screen formed thereon. And an electron beam control electrode having a plurality of fixing pins fixed to face each other, a plurality of electron beam control electrodes having through holes for the pins, and the electron beam control electrode inserted in the fixing pin to a predetermined position. Insulating spacers held at intervals, fixed insulating spacers inserted and arranged in the fixed pins protruding from the electron beam control electrodes arranged facing the electron beam generation source, and fixed pin heads protruding from the fixed insulating spacers The electrode unit is composed of a fixing member that is fixed to the Electron beam control electrodes except the electrode, in which the insulating spacer and the length of the fixing pin than the total thickness of the fixed insulating spacer is configured longer by a predetermined dimension.

Alternatively, the phosphor screen includes a back electrode unit including a back electrode, an electron beam generation source, an electrode unit formed of a plurality of electron beam control electrodes, and a face plate on which a phosphor screen is formed. And an electron beam control electrode having a plurality of fixing pins having a diameter smaller than the diameters of both ends fixed to an intermediate part except the both ends, and a plurality of electron beam control having through holes of the fixing pins. An electrode, an insulating spacer which is inserted into the fixed pin and holds the electron beam control electrode at a predetermined interval, and an insertion spacer which is inserted into the fixed pin protruding from the electron beam control electrode facing the electron beam generation source. A fixed insulating spacer, and by melting the head of the fixed pin projecting from the fixed insulating spacer, a plurality of electrodes are charged. It is to configured to secure the beam control electrodes.

[0019]

When the electrode unit is fixed according to the above-described structure of the present invention, the compressive stress does not act on the electron beam control electrode, and the difference in expansion of each electron beam control electrode due to the heat generation of the electron beam generation source causes the electron beam control electrode. It can be absorbed by slippage between the insulating spacer and the fixed insulating spacer.

When the fixing means made of a shape memory alloy is used, the fixing means has an inner diameter smaller than the diameter of the fixing pin by a predetermined dimension, and by expanding the shape memory in that state, the fixing pin Then, the fixing means is returned to the shape stored in advance by applying a little heat to the fixing means, and the fixing means is crimped and fixed to the fixing pin. Therefore, the fixing pin does not thermally contract and no compressive stress is generated in the electron beam control electrode. Further, since the axial force of the fixing pin does not act on the electron beam control electrode, even if a difference in expansion occurs between the electron beam control electrodes due to heat generation of the electron beam generation source, the force between the electron beam control electrode, the insulating spacer, and the fixed insulating spacer is increased. Sliding occurs, and the difference in expansion of the electron beam control electrode can be absorbed.

Alternatively, when a shim having a predetermined thickness is used, or when a spacer layer that can be removed after fixation is formed, or an electron beam control electrode other than the electron beam control electrode arranged facing the phosphor screen, When a fixing pin that is longer than the total thickness of the insulating spacer and the fixed insulating spacer by a predetermined dimension is used, the electron beam control electrodes are fixed with a slight gap therebetween. Therefore, the difference in expansion of each electron beam control electrode can be absorbed by the slip between the electron beam control electrode and the insulating spacer or the fixed insulating spacer.

Alternatively, by using a fixing pin having a diameter smaller than the diameter of both ends in the intermediate portion excluding both ends, when the expansion difference occurs in each electron beam control electrode due to heat generation of the electron beam generating source, the fixing pin This deformation absorbs the difference in expansion and prevents deformation of the electron beam control electrode.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A flat panel image display device according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional perspective view of an essential part of a flat panel image display apparatus according to an embodiment of the present invention, FIG. 2 is a sectional view of the flat panel image display apparatus, and FIG. 3 is a sectional view taken along the arrow A in FIG. The figure is shown in FIG.
5 is a sectional view taken along the arrow B in FIG. 5, and FIG. 5 is a sectional view taken along the arrow C in FIG.

The flat panel image display device 1 comprises a rear container 2 and
A face plate 4 having a phosphor screen 3 formed thereon,
Electrode unit 5 and linear hot cathode 6 as an electron beam source
And a back electrode unit 7.

The linear hot cathode 6 is stretched and arranged at a predetermined position of the back electrode unit 7, and the electrode unit 5 is fixed at a predetermined position of the back electrode unit 7 with the linear hot cathode 6 sandwiched therebetween. The back electrode unit 7 is positioned and fixed to the face plate 4 via a plurality of posts 8 arranged on the outer peripheral portion of the phosphor screen 3. Further, the rear case 2 is airtightly fixed to the face plate 4 by the low melting point solder glass 9 and the like, and the vacuum exhaust pipe (not shown) is evacuated and then the vacuum exhaust pipe is closed (chip off). Is what you get. However, the external extraction electrode terminals, getters, etc. are not shown.

The electrode unit 5 includes the electron beam control electrode 1
0-14, insulating spacer 15, fixed insulating spacer 1
6, a plurality of fixing pins 17 formed of a metal for fixing the electrode unit 5, and a plurality of united pins 18 formed of a metal for fixing the electrode unit 5 and the back electrode unit 7.
A fixing means 19 formed of a shape memory alloy for fixing the electrode unit 5 and the electrode unit 5 and the back electrode unit 7, strip-shaped electrodes 13a to 13g forming the electron beam control electrode 13, and an electron beam. Control electrode 1
4 is composed of a plurality of position regulating means 20 for regulating the positions of the strip-shaped electrodes 14a to 14g.

The fixing pin 17 for fixing the electrode unit 5 is a strip-shaped electrode 14 of the electron beam control electrode 14.
It is fixed to a predetermined position of a to 14 g by welding or the like.
On the other hand, the united pin 18 for fixing the electrode unit 5 and the back electrode unit 7 is fixed to a predetermined position of the plate-shaped electron beam control electrode 11 by welding or the like.

The electron beam control electrodes 10 to 12 are provided with electron beam passage holes 10a to 12a at predetermined positions.
However, the strip-shaped electrodes 13a, 1 of the electron beam control electrode 13
3b to 13g have comb-shaped protrusions 13ab and 13 at predetermined positions.
bb to 13gb (13fb and 13gb are not shown),
The electron beam control electrode 14 includes strip-shaped electrodes 14a, 14
Slits 14ab and 14bc to 14fg are formed at predetermined positions in the longitudinal direction of the linear hot cathode 6 between each of b to 14g.

Further, the electron beam control electrodes 10 to 12,
The through holes 10b and 11 of the fixing pin 17 are provided in 13a to 13g.
b, 12b, 13ac, 13bc to 13gc, and the through hole 10c of the united pin 18 are formed. In addition, the fixing pin 17 is attached to the insulating spacer 15 and the fixed insulating spacer 16.
Also, through holes 15a and 16a of the united pin 18 are formed.

The electrode unit 5 is manufactured as follows. Electron beam control electrode 1 with fixed pin 17 fixed
4, strip-shaped electrodes 14a to 14g, an insulating spacer 15,
Electron beam control electrode 13, insulating spacer 15, electron beam control electrode 12, insulating spacer 15, plate-shaped electron beam control electrode 11 on which united pin 18 is fixed, insulating spacer 1
5, electron beam control electrode 10, fixed insulating spacer 16,
The fixing means 19 formed of a shape memory alloy are inserted in this order.

Here, the fixing means 19 formed of a shape memory alloy has an inner diameter smaller than the diameter of the fixing pin by a predetermined dimension in advance, the shape is memorized in that state, and the diameter is expanded to fix the fixing pin. It is formed so that it can be inserted into. After the fixing means 19 is inserted into the fixing pin 17, a small amount of heat is applied to the fixing means 19 while applying a predetermined pressing force to restore the fixing means 19 to the pre-stored shape, so that the fixing means 19 is crimped and fixed.

Since the strip-shaped electrodes 13a to 13g of the electron beam control electrode 13 and the strip-shaped electrodes 14a to 14g of the electron beam control electrode 14 are independent of each other,
A plurality of position regulating means 20 are arranged at both ends of the linear hot cathode 6 in the longitudinal direction. The position regulating means 20 has the following structure. Position regulating holes 12c are provided at both ends in the longitudinal direction of the linear hot cathode 6 of the plate-shaped electron beam control electrode 12, strip electrodes 13a to 13g and strip electrodes 14a to 14g.
The position regulating hole 12c at a position corresponding to the position regulating hole 12c.
Position regulating holes 13h and 14h having substantially the same diameter as c are formed.

Here, one side of the position regulating holes 13h and 14h may be an elongated hole having a major axis in the longitudinal direction of the linear hot cathode 6. The position regulating bush 21 is inserted into the position regulating holes 12c, 13h, and 14h, and the regulating pin 23 made of metal is fixed to the fixing plate 22 made of metal by welding or the like. 21 through holes 2
1a, the through hole 24a of the restriction insulating spacer 24 and the fixing means 19 are inserted into the restriction pin 23 protruding from the electron beam control electrode 12, and then some heat is applied to the fixing means 19 while applying a predetermined pressing force. By returning the fixing means 19 to the shape stored in advance, the fixing means 19 is pressure-fixed to the regulation pin 23.

The back electrode unit 7 includes a back electrode substrate 25.
And a plate-shaped supporting member 26 for supporting the linear hot cathode 6, and the back electrode substrate 25 and the supporting member 26 are made of an insulating layer 27.
Are held at predetermined intervals by. The back electrode 25a is formed on the side of the back electrode substrate 25 on the side of the linear hot cathode 6 by a conductive film divided in a direction orthogonal to the linear hot cathode 6 with an insulating layer 25b interposed therebetween, and is located at a position facing the electron beam passage hole 10a. Has been formed. The supporting member 26 includes an insulating layer 2 on the side of the linear hot cathode 6.
6a is formed. Further, the electron beam passage hole 10a
The holes 26b are formed at positions facing each other, and the bars 26c between the holes 26b are brought into insulating contact with the linear hot cathode 6 to prevent the linear hot cathode 6 from vibrating.

The electrode unit 5 and the back electrode unit 7 thus constructed are united by the following construction.

The rear electrode substrate 25, the insulating layer 25b, the supporting member 26, the insulating layer 26a, the insulating layer 27, the united insulating spacer 28, and the unitary fixed insulating spacer 29 are each of the united pin 18 fixed to the electrode unit 5. Through holes 25c, 25
ba, 26c, 26aa, 27a, 28a, 29a are formed.

The back electrode 25a is formed so as to avoid the position corresponding to the united pin 18. The support member 26 and the insulating layer 26a are formed with escape holes 26d and 26ab for the fixing means 19 of the electrode unit 5.

The linear hot cathode 6 stretched at a predetermined position with a predetermined tension by a linear hot cathode stretching unit (not shown) is fixed to the back electrode unit 7, and the linear hot cathode 6 is supported by the supporting member 2.
The insulating layer 26a of No. 6 is contacted. At this time, the back electrode unit 7 has a central axis in the direction perpendicular to the linear hot cathode 6 so that the linear hot cathode 6 contacts the insulating layer 26a of the supporting member 26 evenly, and is convex toward the linear hot cathode 6 side. It is formed in a simple cylindrical shape.

The united pin 18 fixed to the electrode unit 5
After inserting the united insulating spacer 28 having the same thickness as the fixed insulating spacer 16, the back electrode unit 7 is inserted into the united pin 18 from the linear hot cathode 6 side. Back electrode substrate 2
5 to the united pin 18 protruding from the united fixed insulating spacer 2
9. After the fixing means 19 is inserted, a small amount of heat is applied to the fixing means 19 while applying a predetermined pressing force to restore the fixing means 19 to the pre-stored shape, so that the fixing pin 19 is pressure-fixed.

The fixing pin 17, the uniting pin 18, the restriction pin 23 and the fixing means 19 may be welded after crimping.

The operation of the flat panel image display device of the first embodiment having the above-described structure will be described below with reference to FIGS. 1 and 2.

A predetermined voltage is applied to the back electrode 25a, the support member 26, and the electron beam control electrode 10, and the linear hot cathode 6 is heated.
When a current is applied to the electron beam, the electron beam generated from the linear hot cathode 6 is emitted through the electron beam passage hole 10a of the electron beam control electrode 10.
It is taken out and passes through the electron beam passage holes 11a and 12a of the electron beam control electrodes 11 and 12 to which a predetermined voltage is applied.

Further, the strip-shaped electrodes 13a to 13g of the electron beam control electrode 13 have comb-shaped projections 13ab and 13bb to 13b.
The electron beam passes between each of the 13 gb, and by alternately applying more positive and more negative electric potentials with respect to a predetermined electric potential to the strip-shaped electrodes 13a to 13g, the linear hot cathode 6 can be moved in the longitudinal direction. Deflect the electron beam.

Further, the electron beam passes through the slits 14ab, 14bc to 14fg of the electron beam control electrode 14,
By alternately applying positive and negative electric potentials with respect to a predetermined electric potential to the strip-shaped electrodes 14a to 14g, the electron beam is deflected in the direction perpendicular to the linear hot cathode 6.

Thus, the electron beam is focused, modulated and deflected by passing through the electron beam control electrode, and further,
The electron beam is accelerated by the high voltage applied to the phosphor screen 3, collides with the phosphor screen 3, and emits light to obtain an image.

According to the present embodiment, the plurality of electron beam control electrodes 10 to 14 are fixed through the insulating spacers 15 by the fixing pins 17 while maintaining a predetermined distance without being deformed, and the electrode unit 5 is not heated. The electrode unit 5 can be configured at room temperature to prevent oxidation of the electrode unit 5 and reduce the area of the insulator spacer 15 to the electrode unit 5.
It is possible to reduce the area to the minimum area required for fixing, and the electrostatic capacitance between the electron beam control electrodes 10 to 14 can be made sufficiently small.

Further, a small amount of heat is applied to the fixing means 19 made of a shape memory alloy, and the fixing means 1 is fixed to the fixing pin 17.
Since 9 is pressure-bonded and fixed, the fixing pin 17 hardly heat-shrinks, no compressive stress is generated in the electron beam control electrodes 10 to 14, and the electron beam control electrodes 10 to 14 are not deformed.

Further, since the axial force of the fixing pin 17 does not act on the electron beam control electrodes 10 to 14, even if a difference in expansion occurs between the electron beam control electrodes 10 to 14 due to the heat generation of the linear hot cathode 6, the electrons will not be emitted. A slip occurs between the beam control electrodes 10 to 14, the insulating spacers 15, and the fixed insulating spacers 16, and the difference in expansion of the electron beam control electrodes 10 to 14 can be absorbed. Therefore, even if a difference in expansion occurs in the electron beam control electrodes 10 to 14, the electron beam control electrodes 10 to 14 are not deformed.

Further, the position regulating means 2 of the electrode unit 5
0, the combination of the electrode unit 5 and the back electrode unit 7 is also the same.

As described above, the electron beam control electrodes 10 to 14 are formed by fixing the electrode unit 5 and heat generated by the linear hot cathode 6.
There is no deformation of the electron beam control electrodes 10 to 14 due to the difference in expansion, that is, a good image without color unevenness can be displayed,
Further, by keeping the electrostatic capacitance between the electron beam control electrodes 10 to 14 small, it is possible to obtain a flat panel image display device with low driving power.

Next, a second embodiment of the present invention will be described with reference to the drawings. The schematic configuration is omitted because it is almost the same as that of the first embodiment, and A to C in this embodiment are omitted.
The arrow view also corresponds to the arrows A to C in FIG.

FIG. 6 is an enlarged view of a main part of a cross section of the flat panel image display device of the second embodiment taken along the arrow A (corresponding to the view taken along the arrow A of FIG. 1), and FIG. 7 is a view taken along the arrow D of FIG. 8, FIG. 8 is a sectional view of the flat panel image display device of the same embodiment taken along arrow A, FIG. 9 is a sectional view of the same flat panel image display device taken along arrow B (corresponding to the arrow B view of FIG. 1), FIG. FIG. 3 is a cross-sectional view of the flat panel image display device taken along arrow C (corresponding to the arrow view of FIG. 1).

The electrode unit 5 is manufactured as follows. Electron beam control electrode 14 with fixed pin 17 fixed
Strip-shaped electrodes 14a to 14g, insulating spacers 15, electron beam control electrodes 13, insulating spacers 15, electron beam control electrodes 12, insulating spacers 15, plate-shaped electron beam control electrodes 11 to which united pins 18 are fixed, and insulating spacers 1
5, the electron beam control electrode 10, the shim 30, and the fixed insulating spacer 16 are inserted in this order.

In this embodiment, the shim 30 having a predetermined thickness has a shape that supports more than half the area of the fixed insulating spacer 16 and has a thickness of 10 μm. The electrode unit 5 is fixed by melting the head portion of the fixing pin 17 protruding from the fixed insulating spacer 16 with, for example, a YAG laser (FIGS. 6 and 7). After the fixing pin 17 is melted, the shim 30 is extracted to obtain the electrode unit 5 (FIG. 8).

Further, the position regulating means 20 of the strip electrodes 13a to 13g of the electron beam control electrode 13 and the strip electrodes 14a to 14g of the electron beam control electrode 14 are fixed, and the electrode unit 5 and the back electrode unit 7 are combined. Also do the same.

The operation of the flat panel image display apparatus of the second embodiment constructed as described above is the same as that of the first embodiment, and therefore its explanation is omitted.

According to the present embodiment, the plurality of electron beam control electrodes 10 to 14 are fixed by the fixing pin 17 via the insulating spacer 15 while maintaining a predetermined interval without being deformed. By configuring the electrode unit 5 at room temperature without heating, the electrode unit 5 can be prevented from being oxidized, and the area of the insulator spacer 15 can be suppressed to the minimum area necessary for fixing the electrode unit 5. The capacitance between the beam control electrodes 10 to 14 can also be made sufficiently small.

Further, since the fixing means is pressure-bonded to the fixing pin 17 by forming a gap by the shim 30, no compressive stress is generated in the electron beam control electrodes 10 to 14, and the electron beam control electrodes 10 to 14 are deformed. There is no such thing. The axial force of the fixing pin 17 is the electron beam control electrodes 10 to 1
Since the linear hot cathode 6 causes a difference in expansion between the electron beam control electrodes 10 to 14 due to the heat generated by the linear hot cathode 6, the electron beam control electrodes 10 to 14, the insulating spacers 15, and the fixed insulating spacers 16 slip. It is possible to absorb the difference in expansion of the electron beam control electrodes 10 to 14.

Therefore, the electron beam control electrodes 10 to 1
Even if a difference in expansion occurs in 4, the electron beam control electrodes 10 to 14 will not be deformed. The same applies to the position regulating means 20 of the electrode unit 5 and the combination of the electrode unit 5 and the back electrode unit 7.

As described above, the electron beam control electrodes 10 to 14 are fixed by fixing the electrode unit 5 and heating the linear hot cathode 6.
There is no deformation of the electron beam control electrodes 10 to 14 due to the difference in expansion, that is, a good image without color unevenness can be displayed,
Further, by keeping the electrostatic capacitance between the electron beam control electrodes 10 to 14 small, it is possible to obtain a flat panel image display device with low driving power.

Next, a third embodiment of the invention will be described with reference to the drawings. The schematic configuration of the third embodiment is similar to that of FIGS. 1 and 2 in the first embodiment. A description will be given using an arrow view corresponding to A to C in FIG. 11 is an enlarged view of a main part of a cross section taken along the line A in the flat panel image display device of the third embodiment (corresponding to the view taken along the line A of FIG. 1), and FIG. FIG. 13 is a sectional view taken along the arrow (corresponding to the arrow A in FIG. 1), and FIG.
FIG. 14 is a cross-sectional view taken along the arrow (corresponding to the arrow B in FIG. 1), and FIG. 14 is a cross-sectional view taken along the arrow C (corresponding to the arrow C in FIG. 1) of the flat panel image display device.

The electrode unit 5 is manufactured as follows. Electron beam control electrode 14 with fixed pin 17 fixed
Strip-shaped electrodes 14a to 14g, insulating spacers 15, electron beam control electrodes 13, insulating spacers 15, electron beam control electrodes 12, insulating spacers 15, plate-shaped electron beam control electrodes 11 to which united pins 18 are fixed, and insulating spacers 1
5, the electron beam control electrode 10, the shim 30, and the fixed insulating spacer 16 are inserted in this order.

Here, a spacer layer 31 is applied to the fixed insulating spacer 16 on the electron beam control electrode 10 side in a predetermined thickness (lacquer 10 μm in this embodiment). The electrode unit 5 is fixed, for example, by melting the head of the fixing pin 17 protruding from the fixed insulating spacer 16 with a YAG laser or the like. After the fixing pin 17 is melted, the spacer layer 31 is completely removed by washing (eg, acetone washing) and firing (eg, 450 ° C. firing) to obtain the electrode unit 5. The spacer layer 31 is not limited to the fixed insulating spacer 16, but the insulating spacer 15 and the electron beam control electrode 1
It may be formed in 0 to 14.

Further, the strip-shaped electrodes 13a to 13g of the electron beam control electrode 13 and the strip-shaped electrodes 14a to 14g of the electron beam control electrode 14 are fixed to the position regulating means 20, and the electrode unit 5 and the back electrode unit 7 are combined. Also do the same.

The operation of the flat panel image display apparatus of the third embodiment constructed as described above is the same as that of the first embodiment, and therefore its explanation is omitted.

According to the present embodiment, the plurality of electron beam control electrodes 10 to 14 are fixed through the insulating spacers 15 by the fixing pins 17 while maintaining a predetermined interval without being deformed, and the area of the insulating spacers 15 is changed to the electrode. By limiting the area to the minimum area required for fixing the unit 5, the electrostatic capacitance between the electron beam control electrodes 10 to 14 can be made sufficiently small.

Furthermore, since the fixing means is pressure-bonded and fixed to the fixing pin 17 by the gap formed by removing the spacer layer 31, the fixing pin 17 is not thermally contracted and a compressive stress is generated in the electron beam control electrodes 10 to 14. Without doing so, the electron beam control electrodes 10 to 14 are not deformed.

Further, since the axial force of the fixing pin 17 does not act on the electron beam control electrodes 10 to 14, the linear hot cathode 6
Even if there is a difference in expansion between the electron beam control electrodes 10 to 14 due to the heat generation, the slip occurs between the electron beam control electrodes 10 to 14, the insulating spacers 15, and the fixed insulating spacers 16, and the electron beam control electrodes 10 to 14 expand. Can absorb the difference.

Therefore, the electron beam control electrodes 10 to 1
Even if a difference in expansion occurs in 4, the electron beam control electrodes 10 to 14 will not be deformed. The same applies to the position regulating means 20 of the electrode unit 5 and the combination of the electrode unit 5 and the back electrode unit 7.

In this way, each of the electron beam control electrodes 10 to 14 is fixed by fixing the electrode unit 5 and heat generated by the linear hot cathode 6.
There is no deformation of the electron beam control electrodes 10 to 14 due to the difference in expansion, that is, a good image without color unevenness can be displayed,
Further, by keeping the electrostatic capacitance between the electron beam control electrodes 10 to 14 small, it is possible to obtain a flat panel image display device with low driving power.

Next, a fourth embodiment of the present invention will be described with reference to the drawings. The schematic configuration of the fourth embodiment is similar to that of FIGS. 1 and 2 in the first embodiment. This will be described with reference to the arrow views corresponding to the arrows A to C in FIG. Figure 1
5 is a cross-sectional view of the flat panel image display device of the fourth embodiment as viewed in the direction of arrow A (corresponding to the view A in FIG. 1), and FIG. 16 is a cross-sectional view of the flat plate image display device as viewed in the direction of arrow B (FIG. 1). 17 is a cross-sectional view of the flat panel image display device taken along arrow C (corresponding to the arrow C view of FIG. 1). The schematic configuration is the first
Since it is the same as the embodiment of FIG.

The electrode unit 5 is manufactured as follows. Electron beam control electrode 14 with fixed pin 17 fixed
Strip-shaped electrodes 14a to 14g, insulating spacers 15, electron beam control electrodes 13, insulating spacers 15, electron beam control electrodes 12, insulating spacers 15, plate-shaped electron beam control electrodes 11 to which united pins 18 are fixed, and insulating spacers 1
5, the electron beam control electrode 10, the shim (not shown) and the fixed insulating spacer 16 are inserted in this order as in the above embodiment.

Here, the length of the fixing pin 17 is longer than the total thickness of the insulating spacer 15 to the fixed insulating spacer 16 by a predetermined dimension (10 μm in this embodiment).
Use the long one). The dimensional tolerance under the length of the fixed pin 17 is set equal to or slightly larger than the total thickness of the insulating spacer 15 to the fixed insulating spacer 16. Fixing pin 17
The fixing member 32 is welded and fixed to the head of the device using, for example, a YAG laser.

Further, the strip-shaped electrodes 13a to 13g of the electron beam control electrode 13 and the strip-shaped electrodes 14a to 14g of the electron beam control electrode 14 are fixed to the position regulating means 20, and the electrode unit 5 and the back electrode unit 7 are combined. Also do the same.

The operation of the flat panel image display apparatus of the fourth embodiment having the above-mentioned configuration is the same as that of the first embodiment, and therefore its explanation is omitted.

According to the present embodiment, the plurality of electron beam control electrodes 10 to 14 are fixed through the insulating spacers 15 with the fixing pins 17 while maintaining a predetermined interval without being deformed, and the electrode unit 5 is heated. Without forming the electrode unit 5 at room temperature, the electrode unit 5 is prevented from being oxidized, and the area of the insulator spacer 15 is suppressed to the minimum area required for fixing the electrode unit 5, so that the electron beam control electrodes 10 to 10 are formed. The capacitance between 14 can also be made sufficiently small.

Further, since the gap is formed by setting the length of the fixing pin 17, even if the fixing pin 17 is thermally contracted by fixing the fixing member to the fixing pin 17 by welding, the electron beam control electrodes 10 to 14 can be formed. No compressive stress is generated and the electron beam control electrodes 10 to 14 are not deformed.

Further, since the axial force of the fixing pin 17 does not act on the electron beam control electrodes 10 to 14, the linear hot cathode 6
Even if there is a difference in expansion between the electron beam control electrodes 10 to 14 due to the heat generation, the slip occurs between the electron beam control electrodes 10 to 14, the insulating spacers 15, and the fixed insulating spacers 16, and the electron beam control electrodes 10 to 14 expand. Can absorb the difference.

Therefore, the electron beam control electrodes 10 to 1
Even if a difference in expansion occurs in 4, the electron beam control electrodes 10 to 14 will not be deformed. The same applies to the position regulating means 20 of the electrode unit 5 and the combination of the electrode unit 5 and the back electrode unit 7.

As described above, the electron beam control electrodes 10 to 14 are formed by fixing the electrode unit 5 and heating the linear hot cathode 6.
There is no deformation of the electron beam control electrodes 10 to 14 due to the difference in expansion, that is, a good image without color unevenness can be displayed,
Further, by keeping the electrostatic capacitance between the electron beam control electrodes 10 to 14 small, it is possible to obtain a flat panel image display device with low driving power.

Next, a fifth embodiment of the present invention will be described with reference to the drawings. The schematic configuration of the fifth embodiment is similar to that of FIGS. 1 and 2 in the first embodiment. This will be described with reference to the arrow view corresponding to FIG. FIG. 18 is a cross-sectional view of the flat panel image display device of the fifth embodiment taken along arrow A (corresponding to the view of arrow A of FIG. 1), and FIG. 19 is a cross sectional view taken along arrow B of the flat plate image display device (FIG. 1), and FIG. 20 is a sectional view of the same flat panel image display device as viewed in the direction of arrow C (corresponding to the view in the direction of arrow C in FIG. 1). Further, the schematic structure is similar to that of the first embodiment and will not be described.

The electrode unit 5 is manufactured as follows. Electron beam control electrode 14 with fixed pin 17 fixed
Strip-shaped electrodes 14a to 14g, insulating spacers 15, electron beam control electrodes 13, insulating spacers 15, electron beam control electrodes 12, insulating spacers 15, plate-shaped electron beam control electrodes 11 to which united pins 18 are fixed, and insulating spacers 1
5, the electron beam control electrode 10, the shim 30, and the fixed insulating spacer 16 are inserted in this order. Here, the fixing pin 17 is formed so that the diameter of the central portion excluding both end portions is smaller than the diameter of both end portions. The electrode unit 5 is fixed, for example, by melting the head of the fixing pin 17 protruding from the fixed insulating spacer 16 with a YAG laser or the like.

Further, the united pin 18 and the regulation pin 23 are also formed in the same shape as the fixed pin 17, and the strip electrodes 13a to 13g of the electron beam control electrode 13 and the strip electrodes of the electron beam control electrode 14 are formed. The fixing of the position regulating means 20 of 14a to 14g and the combination of the electrode unit 5 and the back electrode unit 7 are performed in the same manner.

The operation of the flat panel image display apparatus of the fifth embodiment constructed as described above is the same as that of the first embodiment, and therefore its explanation is omitted.

According to the present embodiment, the plurality of electron beam control electrodes 10 to 14 are fixed through the insulating spacers 15 with the fixing pins 17 while maintaining the predetermined intervals without being deformed, and the electrode unit 5 is heated. Instead, by configuring the electrode unit 5 at room temperature, oxidation of the electrode unit 5 is prevented, and the area of the insulator spacer 15 is suppressed to the minimum area required for fixing the electrode unit 5, thereby reducing the electron beam control electrodes 10 to 14. The capacitance between them can also be made sufficiently small.

Furthermore, by using the fixing pin 17 having a diameter smaller than the diameter of both ends in the intermediate portion excluding both ends, the fixing pin 17 is deformed when a difference in expansion occurs between the electron beam control electrodes 10 to 14. Absorb the difference in expansion,
The electron beam control electrodes 10 to 14 are not deformed.
The same applies to the position regulating means 20 of the electrode unit 5 and the combination of the electrode unit 5 and the back electrode unit 7.

As described above, each of the electron beam control electrodes 10 to 1 by fixing the electrode unit 5 and heating the linear hot cathode 6 is used.
No deformation of the electron beam control electrodes 10 to 14 due to the difference in expansion of 4, that is, a good image without color unevenness can be displayed, and the electrostatic capacity between the electron beam control electrodes 10 to 14 is kept small to drive power. It is possible to obtain a flat-panel image display device having low

When the configuration of the second embodiment is applied to the first embodiment, the configuration of the third embodiment is applied to the first embodiment, the configuration of the fourth embodiment is applied to the first embodiment. 2 or 3
When applied to the embodiment of FIG.
Alternatively, it may be applied to the second, third, fourth, first and second, first and third, second and fourth, or third and fourth embodiments.

When the electrode unit 5 is fixed, the above contents are as follows. That is, the shim 30 is inserted and the fixing means 19 formed of a shape memory alloy is used to form the electrode unit 5.
When the electrode unit 5 is fixed by the fixing means 19 made of a shape memory alloy and the removable spacer layer 31 is formed on the fixed insulating spacer 16, for example, the electrons arranged opposite to the phosphor screen 3 are fixed. The length of the fixed pin 17 is made longer than the total thickness of the electron beam control electrodes 10 to 13, the insulating spacer 15 and the fixed insulating spacer 16 excluding the beam control electrode 14, and the fixing member 32 is fixed to the head of the fixed pin 17. When the spacer layer 31 into which the shim 30 can be inserted or removed is formed on the fixed insulating spacer 16, for example, when the fixing pin 17 having a diameter smaller than the diameter of both ends is used in the intermediate portion excluding both ends, the shape memory alloy The electrode unit 5 is fixed by the fixing means 19 formed by or the shim 30 is inserted and the fixing pin 1
A spacer layer 31 capable of fixing or removing the electrode unit 5 by melting 7 heads is formed on the fixed insulating spacer 16, for example, and fixing pin 17 is melted to fix the electrode unit 5 head or facing the phosphor screen 3. The electron beam control electrodes 10 except the electron beam control electrodes 14 arranged as
13, the length of the fixing pin 17 is made longer than the total thickness of the insulating spacer 15 and the fixed insulating spacer 16, and the fixing member 32 is fixed to the head of the fixing pin 17 to fix the electrode unit 5, or the shim 30 is attached. The electrode unit 5 is fixed by inserting and fixing the electrode unit 5 by the fixing means 19 formed of a shape memory alloy, for example, a spacer layer 31 capable of fixing or removing the electrode unit 5 is formed on the fixed insulating spacer 16. , Or the electron beam control electrode 14 arranged so as to face the phosphor screen 3.
Except for electron beam control electrodes 10 to 13, insulating spacer 1
5, the length of the fixing pin 17 is made longer than the total thickness of the fixed insulating spacer 16 and the shim 30 is inserted, and the fixing member 32 is fixed to the head of the fixing pin 17 to fix the electrode unit 5. The fixed pin 17 is made longer than the total thickness of the electron beam control electrodes 10 to 13, the insulating spacer 15 and the fixed insulating spacer 16 excluding the electron beam control electrode 14 arranged to face the body screen 3, For example, the removable spacer layer 31 may be formed on the fixed insulating spacer 16 and the fixing member may be fixed to the head of the fixing pin 17 to fix the electrode unit 5.

The electrode unit 5 may be fixed, the electrode unit 5 and the back electrode unit 7 may be combined, and the position restricting means 20 may be fixed by the different configurations described above.

[0092]

As described above, according to the present invention, when the electrode unit is fixed by the fixing means formed of the shape memory alloy, the fixing pin is not thermally contracted, and the compressive stress is generated in the electron beam control electrode. There is no. Also, since the axial force of the fixed pin does not act on the electron beam control electrode,
Even if a difference in expansion occurs between the electron beam control electrodes due to heat generated by the linear hot cathode, the difference in expansion between the electron beam control electrodes can be absorbed. That is, it is possible to obtain a flat image display device that can display a good image without color unevenness and that has a low inter-electrode capacitance and a low driving power.

Alternatively, by using a shim having a predetermined thickness, or by forming a removable spacer layer after fixing, or electron beam control except for the electron beam control electrode arranged facing the phosphor screen. By using a fixed pin that is longer than the total thickness of the electrode, the insulating spacer and the fixed insulating spacer by a predetermined dimension, the electron beam control electrodes are fixed with a slight gap between them, and the axial force of the fixed pin is the electron beam. Since it does not act on the control electrode, it is possible to absorb the difference in expansion of the electron beam control electrodes even if the difference in expansion of the electron beam control electrodes occurs due to heat generation of the linear hot cathode. That is, it is possible to obtain a flat image display device that can display a good image without color unevenness and that has a low inter-electrode capacitance and a low driving power.

Alternatively, by using a fixing pin having a diameter smaller than the diameter of both ends in the intermediate portion excluding both ends, when an expansion difference occurs in each electron beam control electrode, the expansion difference is caused by the deformation of the fixing pin. It is absorbed and the electron beam control electrode is not deformed. Therefore, it is possible to obtain a flat image display device that can display a good image without color unevenness and that has a low driving power by keeping the interelectrode capacitance small.

[Brief description of drawings]

FIG. 1 is a cross-sectional perspective view of a main part of a flat panel image display device according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of the flat panel image display device in the example.

FIG. 3 is a sectional view taken along arrow A of FIG. 1 in the same embodiment.

FIG. 4 is a sectional view taken along arrow B of FIG. 1 in the same embodiment.

FIG. 5 is a sectional view taken along the arrow C in FIG. 1 in the same embodiment.

FIG. 6 is an enlarged view of an essential part of a cross section of a flat-panel image display device according to a second embodiment of the present invention, which corresponds to a portion viewed in the direction of arrow in FIG.

FIG. 7 is a sectional view taken along arrow D of FIG. 6 in the same embodiment.

FIG. 8 is a plan view of the flat panel image display device in the embodiment.
Sectional view of the part corresponding to arrow A

FIG. 9 is a plan view of the flat panel image display device in the embodiment.
Sectional view of the part corresponding to arrow B

FIG. 10 is a cross-sectional view of a portion corresponding to the arrow in FIG. 1C of the flat panel image display device in the example.

FIG. 11 is an enlarged view of a cross-sectional main part of a flat-panel image display device according to a third embodiment of the present invention, which corresponds to a part viewed in the direction of arrow in FIG. 1A.

FIG. 12 is a cross-sectional view of a portion corresponding to the arrow in FIG. 1A of the flat panel image display device in the example.

FIG. 13 is a sectional view of a portion corresponding to the arrow in FIG. 1B of the flat panel image display device in the example.

FIG. 14 is a cross-sectional view of a portion corresponding to the arrow in FIG. 1C of the flat panel image display device in the example.

FIG. 15 is a sectional view of a portion corresponding to the arrow in FIG. 1A of the flat panel image display device according to the fourth embodiment of the present invention.

FIG. 16 is a sectional view of a portion corresponding to the arrow in FIG. 1B of the flat panel image display device in the example.

FIG. 17 is a cross-sectional view of a portion corresponding to the arrow in FIG. 1C of the flat panel image display device in the example.

FIG. 18 is a sectional view of a portion corresponding to the arrow in FIG. 1A of the flat panel image display device according to the fifth embodiment of the present invention.

FIG. 19 is a sectional view of a portion corresponding to the arrow in FIG. 1B of the flat panel image display device in the example.

FIG. 20 is a cross-sectional view of a portion corresponding to the arrow in FIG. 1C of the flat panel image display device in the example.

FIG. 21 is a diagram showing a fixed configuration of electron beam control electrodes in a conventional flat panel image display device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Flat-panel image display device 3 Phosphor screen 4 Face plate 5 Electrode unit 6 Linear hot cathode (electron beam source) 7 Back electrode unit 10 Electron beam control electrode 11 Electron beam control electrode 12 Electron beam control electrode 13 Electron beam control Electrode 14 Electron beam control electrode 15 Insulating spacer 16 Fixed insulating spacer 17 Fixed pin 18 Combined pin 19 Fixing means 25a Back electrode 28 Combined insulating spacer 29 Combined fixed insulating spacer 30 Shim 31 Spacer layer 32 Fixing member

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kanji Imai 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (8)

[Claims] 1. A phosphor screen including a back electrode unit including a back electrode, an electron beam source, an electrode unit formed of a plurality of electron beam control electrodes, and a face plate having a phosphor screen formed thereon. And an electron beam control electrode having a plurality of fixing pins fixed to face each other, a plurality of electron beam control electrodes having through holes of the fixing pins, and the electron beam control electrodes inserted into the fixing pins to have a predetermined size. A fixed insulating spacer inserted into the fixed pin protruding from the electron beam control electrode arranged facing the electron beam generation source, and the fixed pin protruding from the fixed insulating spacer. A flat plate image characterized in that the electrode unit is composed of a fixing means formed of a shape memory alloy to be inserted and fixed in Display devices. 2. A phosphor screen including a back electrode unit including a back electrode, an electron beam generation source, an electrode unit formed of a plurality of electron beam control electrodes, and a face plate having a phosphor screen formed thereon. And an electron beam control electrode having a plurality of fixing pins fixed to face each other, a plurality of electron beam control electrodes having through holes of the fixing pins, and the electron beam control electrodes inserted into the fixing pins to have a predetermined size. And the fixed insulating spacer inserted into the fixed pin protruding from the electron beam control electrode arranged to face the electron beam generation source, and the fixed insulating spacer. Insert a shim with a certain thickness between the electron beam control electrode and the electron beam control electrode to melt the head of the fixing pin protruding from the fixing insulating spacer. Flat panel display device, wherein after fixing a plurality of electron beam control electrodes, that withdrawing the shim by. 3. A phosphor screen including a back electrode unit including a back electrode, an electron beam generation source, an electrode unit formed of a plurality of electron beam control electrodes, and a face plate having a phosphor screen formed thereon. And an electron beam control electrode having a plurality of fixing pins fixed to face each other, a plurality of electron beam control electrodes having through holes of the fixing pins, and the electron beam control electrodes inserted into the fixing pins to have a predetermined size. The electrode unit is composed of an insulating spacer that is held at a distance of 10 mm and a fixed insulating spacer that is inserted and arranged in the fixed pin protruding from the electron beam control electrode that is arranged to face the electron beam generation source. A spacer layer is formed on at least one layer of the electrode, the insulating spacer, and the fixed insulating spacer, and protrudes from the fixed insulating spacer. After fixing a plurality of electron beam control electrodes by melting the the head of the fixing pin, heating the spacer layer, flat panel display device, characterized in that the removal by washing or the like. 4. A phosphor screen including a back electrode unit including a back electrode, an electron beam generation source, an electrode unit formed of a plurality of electron beam control electrodes, and a face plate having a phosphor screen formed thereon. And an electron beam control electrode having a plurality of fixing pins fixed to face each other, a plurality of electron beam control electrodes having through holes of the fixing pins, and the electron beam control electrodes inserted into the fixing pins to have a predetermined size. , An insulating spacer held at a space of, a fixed insulating spacer inserted into the fixed pin protruding from the electron beam control electrode facing the electron beam generation source, and a fixed pin head protruding from the fixed insulating spacer. The electrode unit is composed of a fixing member for fixing the electron beam control electrode facing the phosphor screen. Ku electron beam control electrode, the insulating spacer and the flat panel display device the length of the fixing pin than the total thickness of the fixed insulating spacer is equal to or longer by a predetermined distance. 5. A phosphor screen including a back electrode unit including a back electrode, an electron beam generation source, an electrode unit formed of a plurality of electron beam control electrodes, and a face plate having a phosphor screen formed thereon. And an electron beam control electrode having a plurality of fixing pins having a diameter smaller than both ends arranged in an intermediate portion opposite to each other, and a plurality of electron beam control electrodes having through holes for the pins. An insulating spacer that is inserted into the fixed pin and holds the electron beam control electrode at a predetermined interval, and is inserted and arranged in the fixed pin that projects from the electron beam control electrode that is arranged to face the electron beam generation source. It is composed of a fixed insulating spacer, and the head of the fixing pin protruding from the fixed insulating spacer is melted to melt a plurality of electron beam control electrodes. Flat panel display device, characterized in that to fix the. 6. The flat panel image display device according to claim 1, wherein a shim having a predetermined thickness is inserted between the fixed insulating spacer and the electron beam control electrode. 7. A flat panel image display according to claim 1, wherein at least one layer of the electron beam control electrode, the insulating spacer and the fixed insulating spacer is provided with a spacer layer which can be removed by heating, washing or the like. apparatus. 8. A fixed pin head having a fixed pin length longer than a total thickness of an electron beam control electrode, an insulating spacer and a fixed insulating spacer excluding an electron beam control electrode arranged facing a phosphor screen. The flat panel image display device according to claim 2, wherein a fixing member is fixed to the portion.