JP2000331619A - Discharge tube for indication - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a discharge tube for indication just maintaining merits of a four-electrode form AC type discharge tube for indication and reducing crosstalks between pixels. SOLUTION: A discharge tube for indication has a front base board 1 provided with multiple display electrodes 3, 4 placed in parallel, multiple first address electrodes 5 placed in parallel with the each indication electrodes 3, 4, and a dielectric layer 7 covering individual electrodes 3, 4 and the individual first electrodes 5 on one surface, a rear base board 2 provided with multiple second address electrodes 6 placed in parallel orthogonal to the first address electrodes 5 on one surface, and a discharge area 12 formed to seal a peripheral of opposing parts of each surface of the front base board 1 and the second base board 2, and has display cells formed at crossings between the first address electrodes 5 and the second address electrodes 6. Additional electrodes 6 extending in a placing direction of individual display electrodes 3, 4 are placed on border areas between individual display cells and neighboring display cells.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display discharge tube, and more particularly, to a display discharge tube for performing display using plasma discharge, in which an additional electrode for performing priming discharge is provided to provide high contrast display characteristics. The invention relates to a display discharge tube obtained.

[0002]

2. Description of the Related Art Conventionally, a so-called plasma display panel has been known as a display discharge tube in which pixels are selected by an address setting operation using plasma discharge. This plasma display panel is roughly classified into three types, that is, a direct current type, an alternating current type, and a composite type, and has different characteristics.

[0003] Among these types, the AC type plasma display panel has a memory function using wall charges, and has a front substrate and a rear substrate made of glass or the like. A plurality of display electrodes and a plurality of first address electrodes arranged in parallel with each other, and a front substrate-side dielectric layer covering each display electrode and each first address electrode are provided on the side facing the substrate. A plurality of second address electrodes orthogonally arranged to each display electrode and each first address electrode, and a rear substrate side dielectric covering the second address electrodes, on the rear substrate facing the front substrate. A plurality of display cells are provided at intersections between the first address electrodes and the second address electrodes, that is, the first address electrodes and the second address electrodes are occupied by the respective display cells. 2 address electrodes and It has become the mainstream of 3 electrodes format associated disposed three electrodes shown electrode.

In the three-electrode type AC plasma display panel, an initial discharge, that is, an address discharge is performed between the first address electrode and the second address electrode during the operation, and the front substrate-side dielectric material is used. Charge is applied to the surface of the layer and the rear substrate-side dielectric layer, and thereafter, by utilizing this charge, a display plasma discharge is selectively generated between the display electrode and the first address electrode to perform display. Is what it is.

Recently, the position occupied by each display cell is
In addition to the first address electrode and the second address electrode being related to each other, the first display electrode and the second display electrode are related to each other.
An electrode type AC plasma display panel has been proposed by the same applicant as the present applicant.

FIG. 8 is a perspective view showing a schematic configuration of a first example of an AC plasma display panel of a four-electrode type proposed by the above-mentioned proposal. FIG. 9 is a cross-sectional view showing the configuration of one pixel portion in the four-electrode AC plasma display panel shown in FIG.

In FIGS. 8 and 9, reference numeral 51 denotes a transparent front substrate, 52 denotes a rear substrate, 53 denotes a first display electrode, 53a denotes a mother electrode, 53b denotes a transparent electrode, 54 denotes a second display electrode, and 54 denotes a second display electrode.
a is a mother electrode, 54b is a transparent electrode, 55 is a first address electrode, 55a is a mother electrode, 55b is a transparent electrode, 56 is a transparent first dielectric layer, and 57 is a transparent magnesium oxide (Mg).
O) protective film, 58 is a second address electrode, 59 is a second dielectric layer, 60 is a grid-like partition, 61 is a phosphor of three colors (red R, green G, and blue B), and 62 is plasma discharge Area.

The front substrate 51 has a plurality of first display electrodes 53, a plurality of second display electrodes 54, and a plurality of first address electrodes 5 which are arranged in parallel on one surface thereof.
5, a first dielectric layer 56 is provided so as to cover each first display electrode 53, each second display electrode 54, and each first address electrode 55, so as to cover the first dielectric layer 56. Is provided with a protective film 57. Also, the back substrate 52 is parallel to one surface thereof, and each of the first display electrodes 53 and each of the second display electrodes 53.
It has a plurality of second address electrodes 58 arranged orthogonally to the display electrodes 54 and each first address electrode 55, and a second dielectric layer 59 is provided so as to cover each second address electrode 58. Have been. On the second dielectric layer 59, the grid-like partition walls 6 in which each grid portion constitutes a pixel are provided.
0 is provided, and a three-color phosphor 61 is applied to the inner wall surface and the bottom surface of each lattice portion so that red R, green G, and blue B pixels are alternately and regularly arranged. . The front substrate 51 and the rear substrate 52 are disposed so as to face each other with one surface thereof being slightly apart from each other.
And frit glass sealed around the back substrate 52,
A plasma discharge region 62 is formed between the front substrate 51 and the rear substrate 52 for each pixel. Also, each first display electrode 53
Is a wide transparent electrode 53 disposed on the surface of the front substrate 51.
b and a narrow mother electrode 53 disposed on the transparent electrode 53b
a, each of the second display electrodes 54 includes a wide transparent electrode 54 b disposed on the surface of the front substrate 51 and a transparent electrode 54
b. Similarly, each first address electrode 55 includes a wide transparent electrode 55b disposed on the surface of the front substrate 51, and a narrow mother electrode 54a disposed on the transparent electrode 55b. And a narrower mother electrode 55a.

A first example of the four-electrode type AC plasma display panel having the above-mentioned configuration is such that, at the time of the display operation,
First, a predetermined voltage is applied between the first address electrode 55 and the second address electrode 58 to generate an address discharge between the first address electrode 55 and the second address electrode 58, and the first
Wall charges are generated and accumulated on the surfaces of the dielectric layer 56 and the second dielectric layer 59. Next, a predetermined voltage is applied between the first display electrode 53 and the second display electrode 54, and the first display electrode 53 and the second display electrode 5 are applied by utilizing the accumulated wall charges.
A display plasma discharge is generated between the four. When a display plasma discharge occurs, ultraviolet light is generated, and the ultraviolet light excites the fluorescent material 61 coated in the corresponding pixel, and the fluorescent material 61 emits visible light of a color specific to the fluorescent material. You.
The emitted visible light passes through the front substrate 51 and is extracted as display light.

Next, FIG. 10 is a perspective view showing a schematic configuration of a second example of a four-electrode type AC plasma display panel according to the above proposal. FIG. 11 is a sectional view showing a configuration of one pixel portion in the four-electrode AC plasma display panel shown in FIG.

In FIGS. 10 and 11, 53 (1),
53 (2) is a divided first display electrode, 53 (1) a,
53 (2) a is a mother electrode, 53 (1) b and 53 (2) b are transparent electrodes, 54 (1) and 54 (2) are divided second display electrodes, 54 (1) a and 54 ( 2) a is the mother electrode, 54
(1) b, 54 (2) b are transparent electrodes, and the same components as those shown in FIGS. 8 and 9 are denoted by the same reference numerals.

A second example of the four-electrode type AC plasma display panel is a first display electrode 53 and a second display electrode used in the first example of the four-electrode type AC plasma display panel. 54 for each 2
And the two divided first display electrodes 53
(1), 53 (2) and two divided second display electrodes 54 (1), 54 (2) are configured, and for the configuration other than the first display electrode 53 and the second display electrode 54, The configuration is the same as that of the first example of the four-electrode AC plasma display panel.

In this case, the divided first display electrodes 53
(1) includes a wide transparent electrode 53 (1) b disposed on the surface of the front substrate 51 and a narrow mother electrode 53 (1) a disposed on the transparent electrode 53 (1) b. Divided first
The display electrode 53 (2) includes a wide transparent electrode 53 (2) b disposed on the surface of the front substrate 51 and a narrow mother electrode 53 (2) a disposed on the transparent electrode 53 (2) b. Consists of The divided second display electrode 54 (1) is a wide transparent electrode 54 (1) b disposed on the surface of the front substrate 61.
And a narrow mother electrode 5 disposed on the transparent electrode 54 (1) b
4 (1) a and the divided second display electrode 54
(2) is composed of a wide transparent electrode 54 (2) b disposed on the surface of the front substrate 51 and a narrow mother electrode 54 (2) a disposed on the transparent electrode 54 (2) b. I have.

The operation of the second example of the four-electrode type AC plasma display panel having the above-described configuration is almost the same as the operation of the first example of the four-electrode type AC plasma display panel. A predetermined voltage is applied between the address electrode 55 and the second address electrode 58 to generate an address discharge between the first address electrode 55 and the second address electrode 58, and the first dielectric layer 56 and the second dielectric Body layer 59
Generates and accumulates wall charges on the surface. Next, the divided first display electrode 53 (1) and the divided second display electrode 54
A predetermined voltage is applied between the first display electrode 53 (1) and the second display electrode 54 (2) by applying a predetermined voltage between the first display electrode 53 (1) and the second display electrode 54 (2) by utilizing the accumulated wall charges. Generate. Ultraviolet rays are generated when the display plasma discharge occurs, and the ultraviolet rays excite the fluorescent material 61 coated in the corresponding pixel, thereby emitting visible light corresponding to the intrinsic color of the fluorescent material 61. The emitted visible light passes through the front substrate 51 and is extracted as display light.

The first example of the four-electrode AC plasma display panel is different from the previous three-electrode AC plasma display panel in the arrangement interval between the first display electrode 53 and the second display electrode 54. Spread,
The second of the four-electrode AC plasma display panels
In the example, since the arrangement interval between the divided first display electrode 53 (1) and the divided second display electrode 54 (2) is increased, the luminous efficiency at the time of performing the display plasma discharge is increased and the luminous efficiency is increased. An AC plasma display panel having a high luminance can be obtained. However, on the back substrate 52, a grid-like partition wall 60 is formed.
Is formed, there is no occurrence of crosstalk in which the discharge spreads to the adjacent cells. However, when stripe-shaped partition walls are formed, crosstalk occurs.

FIG. 12 shows a display plasma discharge in the case of forming a stripe-shaped partition wall instead of the grid-shaped partition wall 60 on the back substrate 52 in the first example of the four-electrode type AC plasma display panel. FIG. 9 is a characteristic diagram showing a state of generation of an electric field that is generated at the time.

In FIG. 12, the same components as those shown in FIGS. 8 and 9 are denoted by the same reference numerals. In the example shown in FIG. 12, only the central cell discharges, and the adjacent cells do not discharge.

As shown in FIG. 12, when a display plasma discharge is generated between the first display electrode 53 and the second display electrode 54 in one pixel, the first display electrode 53
A wide electric field is formed between the first display electrode 54 and the second display electrode 54.

[0019]

The first example of the four-electrode type AC plasma display panel is different from the three-electrode type AC plasma display panel before that in that the first display electrode 53 and the second display are provided. Because the distance between the electrodes 54 and the electrodes 54 is increased, the second example of the four-electrode type AC plasma display panel is divided into the first display of the first type and the second type. Since the arrangement interval between the electrode 53 (1) and the divided second display electrode 54 (2) is increased, the luminous efficiency when the display plasma discharge is performed is increased, and a display characteristic with high luminance is obtained. However, when a stripe-shaped partition is formed on the rear substrate 52, the first display electrode 53 or the second display electrode 5 of one pixel is provided.
4, the second display electrode 54 and the first display electrode 53 of the pixel adjacent thereto, or the divided first display electrode 53 (1) and the divided second display electrode 54 (2) of one pixel
And the distance between the second display electrode 54 (2) and the first display electrode 53 (1) of the pixel adjacent to the first display electrode 54 (2) is reduced.
When the display plasma discharge of one pixel occurs, as shown in FIG. 12, the electric field generated in one pixel reaches the region of the pixel adjacent thereto, and as a result,
There is a problem that crosstalk frequently occurs between one pixel and a pixel adjacent thereto.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to maintain the advantages of a four-electrode AC plasma display panel and to reduce crosstalk between pixels. It is an object of the present invention to provide a display discharge tube which enables the above.

[0021]

In order to achieve the above object, a display discharge tube according to the present invention comprises a plurality of display electrodes and a plurality of first address electrodes arranged in parallel on one surface of a front substrate. A dielectric layer is coated on each display electrode and each first address electrode, and each display electrode and each first address electrode is coated on one surface of the back substrate.
A plurality of second address electrodes are arranged so as to be orthogonal to the address electrodes, and one surface of each of the front substrate and each of the rear substrates is opposed to each other to form a large number of display cells between them. Means for arranging additional electrodes extending along the direction in which the display electrodes are arranged in the boundary region with the display cell.

According to the above means, the additional electrode extending along the direction in which the display electrodes are arranged is arranged in the boundary region between each display cell and the display cell adjacent thereto. At the time of display plasma discharge, the electric field generated in one pixel is blocked by the additional electrode and does not reach the area of the pixel adjacent thereto, so that the advantage of the four-electrode type AC plasma display panel is maintained. However, it is possible to greatly reduce crosstalk generated between the one pixel and a pixel adjacent thereto.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In an embodiment of the present invention, a display discharge tube comprises a plurality of display electrodes arranged in parallel, a plurality of first address electrodes arranged in parallel with each display electrode, and each display electrode. A front substrate provided on one surface with a dielectric layer formed to cover each first address electrode, and a plurality of second address electrodes arranged in parallel to be orthogonal to the first address electrode on one surface. And a discharge region formed by sealing the periphery of the opposing portion of each surface of the front substrate and the back substrate. The intersection of each first address electrode and each second address electrode is provided. In a display discharge tube in which a display cell is formed in each portion, an additional electrode extending along the direction in which each display electrode is arranged is disposed in a boundary region between each display cell and a display cell adjacent thereto. .

In one embodiment of the present invention, the display discharge tube is provided with a black light shielding portion so as to overlap the position of the additional electrode on the front substrate.

In another embodiment of the present invention,
In the display discharge tube, a common display electrode is arranged at a position including a first address electrode and a boundary region between the first address electrode and an adjacent display cell at a position where each display cell is formed, and an additional electrode is used as a common display electrode. They are arranged at overlapping positions.

In a specific example of the embodiment of the present invention, the display discharge tube constitutes an electrode for performing a reset discharge between the display electrode and the display electrode in which the additional electrode is arranged in close proximity.

[0027] In a preferred embodiment of the present invention, the display discharge tube comprises a plasma display panel.

In these embodiments of the present invention, 4
In an electrode type AC type plasma display panel, an additional electrode extending along the direction in which each display electrode is arranged is arranged in a boundary region between each display cell and an adjacent display cell. With this arrangement, when a display plasma discharge is performed in one pixel, an electric field generated in the one pixel is blocked by an additional electrode disposed in a boundary region of the display cell, and a pixel adjacent thereto is displaced. Never reach the area.

Therefore, according to these embodiments of the present invention, even if a grid-like partition is not formed on the back substrate,
While maintaining the advantages of the four-electrode type AC plasma display panel, that is, the advantage that the luminous efficiency when the display plasma discharge is performed is increased and the AC plasma display panel with high brightness is obtained, It is possible to greatly reduce crosstalk occurring between one pixel and a pixel adjacent thereto.

According to these embodiments of the present invention, when the additional electrode disposed in the boundary region between each display cell and the display cell adjacent thereto is used as a priming discharge, each display cell can be viewed from the outside. A priming discharge can always be generated in a state where there is no priming discharge, and the degree of occurrence of a miss discharge in each display cell is reduced.

[0031]

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

FIGS. 1 and 2 show a schematic configuration of a first embodiment of a display discharge tube according to the present invention. FIG. 1 is a perspective view showing the configuration, and FIG. 2 is a display device shown in FIG. FIG. 4 is a cross-sectional view illustrating a configuration of one pixel portion in a discharge tube, in which a display discharge tube corresponds to a first example of a four-electrode AC plasma display panel. In FIG. 2, the front substrate is shown in a state rotated by 90 ° with respect to the rear substrate.

1 and 2, 1 is a transparent front substrate, 2 is a rear substrate, 3 is a first display electrode, 3a is a mother electrode,
3b is a transparent electrode, 4 is a second display electrode, 4a is a mother electrode, 4
b is a transparent electrode, 5 is a first address electrode, 5a is a mother electrode,
5b is a transparent electrode, 6 is an additional electrode, 7 is a transparent dielectric layer,
8 is a protective layer of transparent magnesium oxide (MgO), 9 is a second address electrode, 10 is a stripe-shaped partition, 11 is a phosphor of three colors (red R, green G, and blue B), and 12 is a plasma discharge region. It is.

The front substrate 1 includes a plurality of first display electrodes 3, a plurality of second display electrodes 4, and a plurality of first address electrodes 5, which are arranged in parallel on one surface thereof. A first display electrode 3 on one side of the first address electrode 5.
However, the second display electrodes 4 are arranged on the other side. The dielectric layer 7 is provided so as to cover each first display electrode 3, each second display electrode 4, and each first address electrode 5, and the protective film 8 is provided so as to cover the dielectric layer 7. The plurality of additional electrodes 6 are provided on the dielectric layer 7 in parallel with the respective first display electrodes 3, the respective second display electrodes 4, and the respective first address electrodes 5, and at the same time as the respective first display electrodes 3 and It is arranged so as to overlap the second display electrode 4. Also, the back substrate 2 is parallel to one surface thereof, and each of the first display electrodes 3,
A plurality of second address electrodes 9 arranged orthogonal to each second display electrode 4 and each first address electrode 5;
Stripe-shaped barrier ribs 10 are arranged on each second address electrode 9. A three-color phosphor 11 is applied to the inner wall surface and the bottom surface of the stripe-shaped partition wall 10 so that red R, green G, and blue B pixels are alternately and regularly arranged.

Although not shown in FIG. 1 and FIG. 2, the front substrate 1 and the rear substrate 2 are disposed so as to face each other with one surface thereof slightly spaced from each other. Frit glass is sealed around the periphery of the plasma discharge region 1 between the front substrate 1 and the back substrate 2 for each pixel.
2 are formed. Each of the first display electrodes 3 includes a wide transparent electrode 3b and a transparent electrode 3b disposed on the front substrate 1 surface.
Each of the second display electrodes 4 comprises a wide transparent electrode 4b disposed on the front substrate 1 and a narrow mother electrode 3b disposed on the transparent electrode 4b. Electrode 4a
Similarly, each first address electrode 5 includes a wide transparent electrode 5b and a transparent electrode 5b disposed on the front substrate 1 surface.
b.

4 and 5 show a schematic configuration of a second embodiment of a display discharge tube according to the present invention. FIG. 4 is a perspective view showing the configuration, and FIG. 5 is shown in FIG. FIG. 4 is a cross-sectional view showing a configuration of one pixel portion in the display discharge tube of FIG. 5, in which the display discharge tube corresponds to a second example of a four-electrode type AC plasma display panel.
In FIG. 5, the front substrate is 90 ° with respect to the rear substrate.
° Displayed in a rotated state.

In FIGS. 4 and 5, 3 (1), 3
(2) is a divided first display electrode, 3 (1) a, 3
(2) a is a mother electrode, 3 (1) b, 3 (2) b is a transparent electrode, 4 (1), 4 (2) are divided second display electrodes,
(1) a, 4 (2) a are mother electrodes, 4 (1) b, 4 (2)
b is a transparent electrode, 6 (1) and 6 (2) are additional electrodes, 13 is a black grid-like partition, and other components which are the same as those shown in FIGS. 1 and 2 have the same reference numerals. Is attached.

The second example of the four-electrode type AC plasma display panel is a first display electrode 3 and a second display electrode used in the first example of the four-electrode type AC plasma display panel. 4 are divided into two, and the two divided first display electrodes 3
(1), 3 (2) and two divided second display electrodes 4
(1) An additional electrode 6 formed on the dielectric layer 7 in the first example of the AC type plasma display panel of the four-electrode type, which constitutes 4 (2) (first difference). Are formed as additional electrodes 6 (1) and 6 (2) on the front substrate 1, and the additional first electrodes 6 (1) are divided into two first electrodes.
An additional electrode 6 (2) is provided between the display electrodes 3 (1) and 3 (2).
Is arranged between two divided second display electrodes 4 (1) and 4 (2) (second difference), a first example of the four-electrode type AC plasma display panel. Are different from each other in that a black lattice-shaped partition wall 13 is disposed on the dielectric layer 7 not used in the above (third difference), except for the first to third differences. Is the same as that of the first example of the four-electrode type AC plasma display panel.

In this case, the divided first display electrodes 3
(1) is a wide transparent electrode 3 (1) b disposed on the surface of the front substrate 1 and an additional electrode 6 (1) on the transparent electrode 3 (1) b.
The first display electrode 3 (2), which is composed of a narrower mother electrode 3 (1) a disposed closer to the side, is divided into a wide transparent electrode 3 (2) disposed on the surface of the front substrate 1. B) and transparent electrode 3
And (2) a narrower mother electrode 3 (2) a disposed on the side closer to the additional electrode 6 (1). Further, the divided second display electrode 4 (1) has a wide transparent electrode 4 (1) b disposed on the surface of the front substrate 1 and an additional electrode 6 (2) side on the transparent electrode 4 (1) b. And the divided second display electrode 4 which is composed of a narrower mother electrode 4 (1) a
(2) is a wide transparent electrode 4 (2) b disposed on the surface of the front substrate 1 and an additional electrode 6 (2) on the transparent electrode 4 (2) b.
And a narrower mother electrode 4 (2) a disposed closer to the side.

The black grid-like partition walls 13 are arranged such that portions arranged in parallel to the additional electrodes 6 (1) and 6 (2) overlap with the additional electrodes 6 (1) and 6 (2), respectively. The portion corresponding to each grid forms a pixel.

FIG. 7 is a waveform diagram showing an example of a drive voltage waveform in a second example of the four-electrode type AC plasma display panel of the second embodiment.

Here, the operation of the second example of the four-electrode type AC plasma display panel of the second embodiment will be described with reference to FIG.

In the reset period, the additional electrode 6
(1) and 6 (2) change from the small negative voltage supply state to the reference voltage supply state. And in the middle of the reset period,
The additional electrode 6 (1) changes from the reference voltage supply state to the large negative voltage supply state, and is divided into the first display electrodes 3 (1) so as to coincide with the large negative voltage supply period to the additional electrode 6 (1). )
Changes from the reference voltage supply state to the positive voltage supply state.
At this time, a large potential difference occurs between the divided first display electrode 3 (1) and the additional electrode 6 (1), and
A priming discharge (reset discharge) is generated between the display electrode 3 (1) and the additional electrode 6 (1). After the priming discharge occurs, the first display electrode 3 (1) changes from the positive voltage supply state to the reference voltage supply state, and the additional electrode 6 (1) changes from the large negative voltage supply state to the reference voltage supply state. However, the cells are filled with charged particles and the like generated by the priming discharge.

Next, in the address period, the additional electrode 6
Means that the additional electrodes 6 (1) and 6 (2) change from the reference voltage supply state to the small negative voltage supply state. Then, in the middle of the address period, the first address electrode 5 changes from the previous reference voltage supply state to the negative voltage supply state, and the second address electrode 5 is switched to the second address supply period so as to coincide with the negative voltage supply period to the first address electrode 5. The address electrode 6 changes from the reference voltage supply state to the positive voltage supply state. At this time, a large potential difference occurs between the first address electrode 5 and the second address electrode 6, an address discharge occurs between the first address electrode 5 and the second address electrode 6, and a charge is generated on the surface of the dielectric layer 7. Is accumulated. After the address discharge occurs, the first address electrode 5
Changes from the negative voltage supply state to the reference voltage supply state, and the second address electrode 6 changes from the positive voltage supply state to the reference voltage supply state, but the electric charge accumulated on the surface of the dielectric layer 7 remains unchanged. Maintained in state.

Next, in the sustain period, during the sustain period, the divided first display electrodes 3 are divided.
In (1), the first address electrode 5 is changed from the reference voltage supply state to the negative voltage supply state so as to overlap the divided negative voltage supply period to the first display electrode 3 (1).
Changes from the reference voltage supply state to the positive voltage supply state. At this time, the divided first display electrodes 3 (1)
A large potential difference is generated between the first display electrode 3 (1) and the first address electrode 5 together with the action of the electric charge already accumulated on the surface of the dielectric layer 7. A display plasma discharge is generated between the address electrodes 5. After the display plasma discharge occurs, the first address electrode 5 changes from the positive voltage supply state to the reference voltage supply state, but the generated display plasma discharge is divided into the divided first display electrode 3 (1). This is continued between the second display electrodes 4 (1). The first display electrode 3 (1) changes from the negative voltage supply state to the reference voltage supply state, but charges are accumulated on the surface of the dielectric layer 7 by the generated display plasma discharge.

Subsequently, during the sustain period,
The divided second display electrode 4 (1) changes from the reference voltage supply state to the negative voltage supply state. At this time,
The charge accumulated on the divided first display electrode 3 (1) is superimposed, and the display is performed between the divided first display electrode 3 (1) and the divided second display electrode 4 (1). Plasma discharge occurs. After a display plasma discharge is generated between the divided first display electrode 3 (1) and the divided second display electrode 4 (1), the divided second display electrode 4 (1) applies a negative voltage. The state changes from the supply state to the reference voltage supply state, but charges are accumulated on the dielectric layer 7 by the generated display plasma discharge.

Thereafter, similarly, the divided first display electrode 3 (1) and the divided second display electrode 4 (1) alternately change from the reference voltage supply state to the negative voltage supply state for a certain period. The state changes to maintain the display plasma discharge generated between the divided first display electrode 3 (1) and the divided second display electrode 4 (1).

In this case, when the display plasma discharge occurs, ultraviolet rays are generated, and the ultraviolet rays excite the phosphor 12 applied in the corresponding pixel, and the phosphor 12 causes the phosphor 12 to emit light peculiar to the phosphor. Visible light of color is emitted. The emitted visible light passes through the front substrate 1 and is extracted as display light.

The above operation has been described using the second example of the four-electrode AC plasma display panel of the second embodiment as an example. However, the operation of the four-electrode AC plasma display panel of the first embodiment is described. The operation of the first example is also the same as the operation of the second
The operation according to the operation of the second example of the four-electrode AC plasma display panel of the embodiment is performed.

FIG. 3 shows a first example of a four-electrode AC plasma display panel according to the first embodiment.
FIG. 4 is a characteristic diagram illustrating a state of generation of an electric field generated at the time of display plasma discharge.

FIG. 6 shows a second example of the four-electrode AC plasma display panel of the second embodiment.
FIG. 4 is a characteristic diagram illustrating a state of generation of an electric field generated at the time of display plasma discharge. The example shown in FIGS. 3 and 6 is a case where only the central cell discharges and the adjacent cells do not discharge.

As shown in the characteristic diagrams of FIGS. 3 and 6,
The four-electrode AC plasma display panel according to the first and second embodiments has additional electrodes 6, 6 (1), 6
(2) is arranged, and the additional electrode 6 in the sustain period is
The voltage of one pixel is generated by maintaining the voltages of 6 (1) and 6 (2) at a small negative voltage and setting the potential at an intermediate potential between the first display electrode 3 and the second display electrode 4 which are performing display discharge. The electric field due to the generated display plasma discharge can be kept in its own pixel, and the distance between the first display electrode 3 and the second display electrode 4 for generating the display plasma discharge, or the divided first display electrode 3 Second display electrode 4 divided from (1)
It is possible to widen the interval with (1).

As described above, the four-electrode AC plasma display panel according to the first embodiment and the second embodiment has the following advantages.
At the time of display plasma discharge of one pixel, the electric field generated in one pixel is blocked by the additional electrodes 6, 6 (1) and 6 (2), and does not reach the region of the pixel adjacent thereto. The advantages of the four-electrode AC plasma display panel are maintained, and the stripe-shaped partition wall 1 is maintained.
While using 0, it is possible to greatly reduce crosstalk generated between the one pixel and a pixel adjacent thereto.

The four-electrode AC plasma display panel of the first embodiment and the second embodiment has the additional electrodes 6, 6 (1) arranged at the boundary region between each display cell and the display cell adjacent thereto. ) And 6 (2) are used for the priming discharge, so that the priming discharge can be always generated by making each display cell invisible from the outside, and the degree of occurrence of the mis-discharge in each display cell can be reduced. .

In each of the embodiments described above, the display discharge tube is a four-electrode type AC plasma display panel. However, the display discharge tube according to the present invention has such a four-electrode display tube. The present invention is not limited to the AC plasma display panel of the type, and it is a matter of course that other display discharge tubes may be used as long as they are similar to such an AC plasma display panel of the four-electrode type. .

In each of the above embodiments, the structures of the first and second examples of the four-electrode type AC plasma display panel are shown in FIGS. 1, 2, 4 and 5. However, the configuration of the four-electrode AC plasma display panel to which the present invention is applied is not limited to the illustrated one, and it goes without saying that the same can be applied as long as it operates in a similar manner. .

[0057]

As described above, according to the present invention, in the boundary region between each display cell and the display cell adjacent thereto in the four-electrode type AC plasma display panel, the display electrodes are arranged along the direction of arrangement. An extended additional electrode is arranged, and when a display plasma discharge is performed in one pixel, an electric field generated in the one pixel is blocked by an additional electrode arranged in a boundary region of the display cell. It does not reach the area of adjacent pixels.

Therefore, according to the present invention, the advantage of the four-electrode AC plasma display panel, that is, the luminous efficiency when the display plasma discharge is performed is increased, and the AC plasma display panel with high brightness is provided. Is obtained, and it is possible to significantly reduce crosstalk between one pixel and a pixel adjacent thereto while using a stripe-shaped partition wall.

Further, according to the present invention, by using an additional electrode disposed in a boundary region between each display cell and a display cell adjacent thereto as a priming discharge, each display cell is always invisible from the outside so as to be invisible. It is possible to generate a priming discharge, and there is an effect that the degree of occurrence of a miss discharge in each display cell is reduced.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a schematic configuration of a four-electrode type AC plasma display panel which is a first embodiment of a display discharge tube according to the present invention.

FIG. 2 is a cross-sectional view showing the configuration of one pixel portion in the four-electrode AC plasma display panel of the first embodiment.

FIG. 3 is a characteristic diagram showing a state of generation of an electric field generated at the time of display plasma discharge in the four-electrode AC plasma display panel of the first embodiment.

FIG. 4 is an exploded perspective view showing a schematic configuration of a four-electrode type AC plasma display panel which is a second embodiment of the display discharge tube according to the present invention.

FIG. 5 is a sectional view showing a configuration of one pixel portion in a four-electrode AC plasma display panel of a second embodiment.

FIG. 6 is a characteristic diagram showing a state of generation of an electric field generated at the time of display plasma discharge in the four-electrode AC plasma display panel of the second embodiment.

FIG. 7 is a waveform diagram showing an example of a drive voltage waveform of the four-electrode AC plasma display panel of the first embodiment.

FIG. 8 is an exploded perspective view showing a schematic configuration of a first example of a four-electrode type AC plasma display panel having lattice-shaped partition walls.

9 is a cross-sectional view showing a configuration of one pixel portion in the four-electrode type AC plasma display panel shown in FIG.

FIG. 10 is an exploded perspective view showing a schematic configuration of a second example of a four-electrode type AC plasma display panel having lattice-shaped partition walls.

11 is a cross-sectional view showing a configuration of one pixel portion in the four-electrode type AC plasma display panel shown in FIG.

12 is a characteristic diagram showing a state of generation of an electric field generated at the time of display plasma discharge in the four-electrode AC plasma display panel shown in FIG.

[Explanation of symbols]

 Reference Signs List 1 front substrate 2 back substrate 3 first display electrode 3 (1), 3 (2) divided first display electrode 3a, 3 (1) a, 3 (2) a mother electrode 3b, 3 (1) b, 3 (2) b Transparent electrode 4 Second display electrode 4 (1), 4 (2) Divided second display electrode 4a, 4 (1) a, 4 (2) a Mother electrode 4b, 4 (1) b 4 (2) b Transparent electrode 5 First address electrode 5a Mother electrode 5b Transparent electrode 6, 6 (1), 6 (2) Additional electrode 7 Dielectric layer 8 Protective film 9 Second address electrode 10 Striped partition 11 Three-color phosphor 12 Plasma discharge area 13 Black grid-like partition

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Hideo Tanabe 3300 Hayano, Mobara-shi, Chiba Prefecture Within Hitachi, Ltd. Display Group (72) Inventor Norio Nakamura 3300-Hayano, Mobara-shi, Chiba Prefecture, Hitachi, Ltd. (72) Inventor Hiroshi Kawasaki 3681 Hayano Mobara-shi, Chiba F-term in Hitachi Device Engineering Co., Ltd. (reference) 5C040 FA01 FA04 GB03 GB14 GB16 GC11 GH06 MA03 MA17 MA20

Claims (5)

[Claims] 1. A plurality of display electrodes arranged in parallel, a plurality of first address electrodes arranged in parallel with each of the display electrodes, and the display electrodes are formed so as to cover the display electrodes and the first address electrodes. A front substrate provided with a dielectric layer on one surface, a back substrate provided on a surface with a plurality of second address electrodes arranged in parallel to be orthogonal to the first address electrodes, A discharge region formed by sealing the periphery of the opposing portion on each surface of the back substrate, and a display cell is formed at an intersection of each of the first address electrodes and each of the second address electrodes. A display discharge tube, wherein an additional electrode extending along a direction in which the display electrodes are arranged is disposed in a boundary region between each display cell and a display cell adjacent thereto. . 2. The display discharge tube according to claim 1, wherein the front substrate is provided with a black light shielding portion so as to overlap with a position where the additional electrode is arranged. 3. In each of the display cells, a display electrode common to both display cells is arranged at a position including the first address electrode at a formation position thereof and a boundary region between the first address electrode and an adjacent display cell. The display discharge tube according to claim 1, wherein the additional electrode is arranged at a position overlapping the common display electrode. 4. The display discharge tube according to claim 1, wherein the additional electrode is an electrode for performing a priming discharge between the display electrode and a display electrode arranged in close proximity. 5. The display discharge tube according to claim 1, wherein the display discharge tube is a plasma display panel.