JP2001266758A - Plasma display unit and its manufacturing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plasma display unit that can narrow discharge gap between paired discharge sustaining electrodes and reduce the thickness of dielectric layer. SOLUTION: The AC drive type plasma display unit is composed of the first panel, equipped with a plurality of the first electrodes and the second panel. Each of the first electrodes consists of the first bus electrode 13A, the first discharge-sustaining electrode 12A, the second bus electrode 13B that extends in parallel to first bus electrode 13A, and the second discharge sustaining electrode 12B facing the first discharge-sustaining electrode 12A. The first portion of a dielectric layer, that coats the first and second bus electrodes 13A and 13B, respectively, consists of the first and second dielectric layer 14A and 14B, respectively, while the second portion of the dielectric layer that coats the first and second discharge sustaining electrodes 12A and 12B is composed of the first dielectric layer 14A.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an AC-driven plasma display device and a method of manufacturing the same.

[0002]

2. Description of the Related Art Various types of flat-panel (flat-panel) display devices have been studied as image display devices to replace the current mainstream cathode ray tube (CRT). Examples of such a flat display device include a liquid crystal display device (LCD), an electroluminescence display device (ELD), and a plasma display device (PDP: plasma display). Above all, the plasma display device has advantages such as relatively easy enlargement of the screen and wide viewing angle, excellent resistance to environmental factors such as temperature, magnetism and vibration, and long life. It is expected to be applied not only to home wall-mounted TVs but also to large public information terminals.

A plasma display device emits light by applying a voltage to a discharge cell containing a rare gas and exciting a phosphor layer in the discharge cell with vacuum ultraviolet rays generated based on a glow discharge in the rare gas. It is a display device to obtain. That is,
The individual discharge cells are driven according to a principle similar to a fluorescent lamp, and the discharge cells are generally assembled in the order of several hundred thousand to several million to form one display screen. Plasma display devices are roughly classified into a direct current drive type (DC type) and an alternating current drive type (AC type) according to a method of applying a voltage to a discharge cell, and each has advantages and disadvantages. The AC-driven plasma display device is suitable for high definition, since partition walls that serve to partition individual discharge cells in a display screen may be formed in a stripe shape, for example. In addition, since the surface of the electrode is covered with the dielectric material, the electrode is less likely to be worn and has a long life.

FIG. 2 is a schematic exploded perspective view of a part of a typical example of an AC drive type plasma display device. This AC drive type plasma display device belongs to a so-called three-electrode type, and a glow discharge mainly occurs between a pair of discharge sustaining electrodes 12A and 12B. The AC-driven plasma display device shown in FIG.
(Front panel) 10 and a second panel (rear panel) 20 are bonded together at the periphery. The light emission of the phosphor layer 24 on the second panel 20
Observed through 0.

[0005] The first panel 10 comprises a transparent first substrate 1.
1, a pair of discharge sustaining electrodes (first and second discharge sustaining electrodes 12A and 12B) provided in stripes on the first substrate 11 and made of a transparent conductive material;
A bus electrode (a first bus electrode 13A and a second bus electrode 13B) which is provided for lowering the impedance of the discharge sustaining electrodes 12A and 12B and is made of a material having a lower electric resistivity than the discharge sustaining electrodes 12A and 12B; , Bus electrode 1
It comprises a dielectric layer 14 formed on the first substrate 11 including on 3A and 13B and on the sustain electrodes 12A and 12B, and a protective layer 15 formed on the dielectric layer 14. Usually, the dielectric layer 14 is made of, for example, a fired body of a low-melting glass paste, and the protective layer 15 is made of magnesium oxide (MgO).

On the other hand, the second panel 20 is a second substrate 2
1, a second electrode (also referred to as an address electrode or a data electrode) 22 provided in a stripe shape on the second substrate 21, and a second electrode 21 formed on the second substrate 21 including the second electrode 22. A dielectric film 23, an insulating partition wall 25 extending in parallel with the second electrode 22 in a region between the adjacent second electrodes 22 on the dielectric film 23, and a partition wall 25 extending from the dielectric film 23 And a phosphor layer 24 provided on the side wall surface of the phosphor layer. The phosphor layer 24 includes the red phosphor layer 2
4R, green phosphor layer 24G, and blue phosphor layer 24B
And the phosphor layers 24R, 24R,
24G and 24B are provided in a predetermined order.
FIG. 2 is an exploded perspective view. In fact, the top of the partition 25 on the second panel 20 side is in contact with the protective layer 15 on the first panel 10 side. Discharge sustaining electrodes 12A and 12B which are paired
The area where the second electrode 22 located between the two partition walls 25 overlaps corresponds to a discharge cell. A rare gas is sealed in a space surrounded by the adjacent partition wall 25, the phosphor layer 24, and the protective layer 15.

The direction in which the bus electrodes 13A and 13B extend and the direction in which the second electrode 22 extends form an angle of 90 degrees, and a pair of the discharge sustaining electrodes 12A and 12B and the fluorescent light emitting the three primary colors are used. A region where one set of the body layers 24R, 24G, and 24B overlaps corresponds to one pixel. Since the glow discharge occurs between the paired discharge sustaining electrodes 12A and 12B,
This type of plasma display device is called a "surface discharge type". In the discharge cell, the phosphor layer excited by the irradiation of the vacuum ultraviolet ray generated based on the glow discharge in the rare gas emits a specific emission color according to the type of the phosphor material. Incidentally, vacuum ultraviolet rays having a wavelength corresponding to the type of the rare gas enclosed are generated.

In the plasma display device shown in FIG.
Discharge sustaining electrodes 12A, 12B and bus electrodes 13A, 13B
FIG. 1 schematically shows the positional relationship between the partition 25 and the partition wall 25. Note that a region surrounded by a dotted line corresponds to one pixel. For clarity of each component, it is hatched in FIG. The outer shape of one pixel is substantially square. One pixel is divided into three sections (discharge cells) by a partition 25, and each of the sections emits one of the three primary colors (R, G, B).
A schematic partial end view when the first panel 10 having such a structure is cut along the arrow BB in FIG.
As shown in FIG.

FIG. 8 schematically shows an example in which the arrangement of the sustain electrodes 12A and 12B, the bus electrodes 13A and 13B, and the partition wall 25 is modified in the plasma display device.
This modification is disclosed in JP-A-9-167565. In this modification, the pair of bus electrodes 13A and 13B respectively receive the discharge sustaining electrodes 12A and 1B.
2B has a structure extending toward another bus electrode. A schematic partial end view when the first panel 10 having such a structure is cut along the same direction as the arrow BB in FIG. 1 is the same as that shown in FIG.

[0010]

By the way, even in a plasma display device, the density of pixels, the definition of pixels, and the like are increasing.
The demand for low-voltage driving is increasing. In order to achieve high-density pixels and low-voltage driving, it is necessary to reduce the distance (discharge gap) between the paired discharge sustaining electrodes 12A and 12B. When the discharge gap is reduced, the dielectric layer 14
It is inevitably thinner. This is because if the thickness of the dielectric layer 14 is larger than the discharge gap, most of the lines of electric force pass through the dielectric layer 14, so that glow discharge hardly occurs in the space above the discharge gap.

When the thickness of the dielectric layer 14 is reduced, the withstand voltage naturally decreases. Moreover, the thickness of the bus electrodes 13A, 13B is the same as that of the sustain electrodes 12A, 1A.
2B, the distance from the top surface of the bus electrodes 13A, 13B to the top surface of the second electrode 22 is shorter than the distance from the top surface of the discharge sustaining electrodes 12A, 12B to the second electrode 22. . Therefore, when the thickness of the dielectric layer 14 is reduced,
In particular, the top electrodes of the bus electrodes 13A and 13B and the second electrode 2
2, an abnormal discharge is likely to occur, and in the worst case, the bus electrodes 13A and 13B are damaged.

Accordingly, an object of the present invention is to reduce the discharge gap between a pair of sustain electrodes and to reduce the thickness of a dielectric layer in order to meet the demands for higher pixel density and lower voltage driving. It is an object of the present invention to provide a plasma display device having a structure in which abnormal discharge hardly occurs between a bus electrode and a second electrode serving as an address electrode even when the thickness is reduced, and a method for manufacturing the same.

[0013]

According to the present invention, there is provided a plasma display apparatus comprising: a first substrate and a plurality of first electrodes provided on the first substrate; A first panel composed of a first electrode group and a dielectric layer covering the first electrode and including a dielectric layer composed of a first dielectric layer and a second dielectric layer; and ) A second substrate;
A second electrode group including a plurality of second electrodes extending at a predetermined angle with respect to the direction in which the
An AC-driven plasma display device comprising: a partition provided between the electrodes; and a second panel including a phosphor layer provided above the second electrode. (A) a first bus electrode, (B) a first sustain electrode in contact with the first bus electrode, (C) a second bus electrode extending in parallel with the first bus electrode, D) a second discharge sustaining electrode which is in contact with the second bus electrode and faces the first discharge sustaining electrode, wherein plasma is generated between the first discharge sustaining electrode and the second discharge sustaining electrode. A display device,
A first portion of the dielectric layer covering the first bus electrode and the second bus electrode includes a first dielectric layer and a second dielectric layer, and includes a first discharge sustain electrode and a second discharge electrode. The second portion of the dielectric layer covering the discharge sustaining electrode is made of the first dielectric layer.

In the plasma display device of the present invention, the components of the first bus electrode and the components of the first electrode adjacent to the first bus electrode can be made independent. , A configuration in which a first bus electrode forming a first electrode and a second bus electrode forming a first electrode adjacent to the first electrode are common (that is, for example, the same stripe shape). (Consisting of a conductive material layer). Note that the former configuration is called a plasma display device according to the first configuration of the present invention, and the latter configuration is called a plasma display device according to the second configuration of the present invention. In the plasma display device according to the second configuration of the present invention, the first portion of the dielectric layer covering the first bus electrode forming the first electrode and the first portion adjacent to the first electrode are formed. The first portion of the dielectric layer covering the second bus electrode constituting the above-mentioned electrode is common. Hereinafter, when simply referred to as the plasma display device of the present invention, the plasma display devices according to the first and second configurations of the present invention are included. In the plasma display device according to the second configuration of the present invention, a common first bus electrode and a common second bus electrode may be referred to as a common bus electrode, and the common bus electrode will be described in the following description. When describing the first bus electrode and the second bus electrode, these may be replaced with a common bus electrode as necessary.

In the plasma display device of the present invention, the first portion of the dielectric layer may be laminated in the order of the first dielectric layer and the second dielectric layer from the first substrate side. , A second dielectric layer, and a first dielectric layer.

The AC-driven plasma display device of the present invention is a so-called three-electrode type surface-discharge type plasma display device. Here, in the plasma display device according to the present invention, the first panel and the second panel are arranged so as to face each other so that the dielectric layer and the phosphor layer face each other, and each first electrode (more specifically, Is the direction in which each bus electrode extends and the second
A predetermined angle (eg, 90 degrees) with the direction in which the electrodes extend
A rare gas is sealed in a space surrounded by the dielectric layer, the phosphor layer, and the pair of partition walls, and the phosphor layer is formed by a rare gas generated between the pair of discharge sustaining electrodes facing each other. It has a structure that emits light when irradiated with vacuum ultraviolet rays generated based on AC glow discharge in gas. One first electrode (a pair of a first sustaining electrode and a second sustaining electrode, and
A region where the paired first bus electrode and second bus electrode are combined) and a pair of partition walls correspond to one discharge cell (one subpixel). Hereinafter, the direction in which each first electrode (more specifically, each bus electrode) extends is referred to as a first direction.
And the direction in which each second electrode extends is referred to as a second direction.

According to a method of manufacturing a plasma display device of the present invention for achieving the above object, a plasma display device of the present invention including the plasma display device according to the first or second configuration of the present invention is manufactured. Is the way. That is, (a) a first substrate, a first electrode group including a plurality of first electrodes provided on the first substrate, and the first electrode,
A first panel composed of a dielectric layer composed of a first dielectric layer and a second dielectric layer, and (b) a second substrate, a direction in which the first electrode extends, and a predetermined direction. A second electrode group including a plurality of second electrodes extending at an angle; a partition wall provided between adjacent second electrodes; and a phosphor layer provided above the second electrodes A first panel comprising: (A) a first bus electrode; and
(B) a first discharge sustaining electrode in contact with the first bus electrode;
(C) a second bus electrode extending in parallel with the first bus electrode; and (D) a second discharge sustain electrode in contact with the second bus electrode and facing the first discharge sustain electrode. A method for manufacturing an AC-driven plasma display device in which discharge occurs between a first sustaining electrode and a second sustaining electrode,
(A) forming a first electrode group on a first substrate;
(B) forming a second dielectric layer on the portion of the first dielectric layer on the first bus electrode and the second bus electrode after covering the first electrode with the first dielectric layer; Or a step of coating the first electrode with the first dielectric layer after covering the first bus electrode and the second bus electrode with the second dielectric layer.

In the step (b) of the method for manufacturing a plasma display device according to the present invention, the first dielectric layer is used for the first dielectric layer.
Forming a second dielectric layer on the first bus electrode and the second dielectric layer on the second bus electrode, the first portion of the dielectric layer Has a configuration in which a first dielectric layer and a second dielectric layer are stacked in this order from the first substrate side. Here, covering the first electrode with the first dielectric layer means that the first sustain electrode, the first bus electrode, the second discharge sustain electrode, and the second
Means forming a first dielectric layer on the bus electrodes (including side surfaces). Further, forming a second dielectric layer on a portion of the first dielectric layer on the first bus electrode and the second bus electrode means that the first bus electrode and the second bus electrode have a top surface. This means that the second dielectric layer is formed on the surface and the side surface via the first dielectric layer.

In the step (b) of the method for manufacturing a plasma display device according to the present invention, after the first bus electrode and the second bus electrode are covered with the second dielectric layer, the first electrode is connected to the first bus electrode. If covered with one dielectric layer, the first portion of the dielectric layer has a configuration in which a second dielectric layer and a first dielectric layer are stacked in this order. Here, covering the first bus electrode and the second bus electrode with the second dielectric layer means that the second dielectric layer is formed on the top surface and the side surface of the first bus electrode and the second bus electrode. It means forming a layer. Further, covering the first electrode with the first dielectric layer means that the first electrode is formed on the second dielectric layer and on the top surface and side surface of the first and second discharge sustaining electrodes. Is formed.

In the plasma display device or the method of manufacturing the same according to the present invention (hereinafter, these may be collectively referred to as the present invention), the first and second discharge sustaining electrodes may be formed of a dielectric layer. The thickness of the portion 2 is preferably 10 μm or less in order to cope with demands for higher pixel density and low voltage driving. In addition, the thickness of the second portion of the dielectric layer covering the first and second discharge sustaining electrodes indicates the thickness at the top surface of the first and second discharge sustaining electrodes. The lower limit of the thickness of the second portion of the dielectric layer may be a thickness that does not cause abnormal discharge between the first discharge sustaining electrode and the second discharge sustaining electrode, for example, 1 μm, preferably Is preferably 2 μm.

In the present invention, the thickness (t) of the second dielectric layer on the top surface of the first bus electrode and the second bus electrode
₂ ) is desirably 5 μm to 30 μm, preferably 10 μm to 20 μm, from the viewpoint of preventing abnormal discharge between the bus electrode and the second electrode.

In the plasma display device or the method of manufacturing the same according to the first structure of the present invention, the first bus electrode forming the first electrode and the first electrode adjacent to the first electrode are formed. A first dielectric layer and a second dielectric layer may be formed on the first substrate between the second bus electrode. This effectively prevents abnormal discharge from occurring between the first bus electrode forming the first electrode and the second bus electrode forming the first electrode adjacent to the first electrode. Can be prevented. Further, in the present invention, the second dielectric layer may be formed by a first dielectric layer corresponding to a partition wall provided on the second panel.
May be formed above the area of the panel, whereby it is possible to reliably prevent the occurrence of so-called optical crosstalk in which the glow discharge affects adjacent discharge cells.

In the present invention, the material forming the first dielectric layer is preferably different from the material forming the second dielectric layer. The material constituting the first dielectric layer is silicon oxide (SiO ₂ ), and the material constituting the second dielectric layer is a sintered body of a glass paste (more specifically, a low melting glass paste). can do. In this case, the first dielectric layer is formed by physical vapor deposition (PVD) such as chemical vapor deposition (CVD), sputtering, or vapor deposition.
And the second dielectric layer is preferably formed by a printing method (screen printing method). In particular, if the first dielectric layer is formed by a CVD method, it is conformal. As a result, the first dielectric layer excellent in step coverage and film thickness uniformity can be reliably formed.

In the present invention, the second dielectric layer may be colored. Thus, the second dielectric layer can exhibit a function as a black matrix, and the contrast between pixels in the second direction can be improved.

In the present invention, the first bus electrode and the second bus electrode
Are common to the discharge cells adjacent to each other along the first direction. The first sustain electrode and the second sustain electrode may be common to adjacent discharge cells along the first direction (ie, the first sustain electrode is parallel to the first bus electrode). And the second discharge sustaining electrode may extend in parallel with the second bus electrode), or may be formed between a pair of partition walls (that is, formed for each discharge cell). Good). A portion of the first sustaining electrode facing the second sustaining electrode and a portion of the second sustaining electrode facing the first sustaining electrode may be linear,
A zigzag shape (for example, a combination of "-" characters, a combination of "S" characters, a combination of arcs, and a combination of arbitrary curves) can also be used. When the first sustaining electrode and the second sustaining electrode are formed between a pair of partition walls, the planar shapes of the first sustaining electrode and the second sustaining electrode are as shown in FIG.
As shown in FIG. 5, a first sustain electrode extends from the first bus electrode toward the second bus electrode, and a second sustain electrode extends from the second bus electrode toward the first bus electrode. Thus, the glow discharge can be configured to extend in parallel with the second direction and generate a glow discharge between the tip of the first sustaining electrode and the tip of the second sustaining electrode. Alternatively,
As shown in FIG. 9 or FIG. 10, the first discharge sustaining electrode extends from the first bus electrode toward the second bus electrode.
In addition, the second sustain electrode extends from the second bus electrode to the first bus electrode, and extends in parallel with the second direction to a position before the second bus electrode. Until the electrode, in parallel with the second direction, facing the first sustaining electrode (or alternatively, along the first sustaining electrode).
A structure in which a glow discharge is generated between a portion of the first sustaining electrode that extends and faces the second sustaining electrode and a portion of the second sustaining electrode that faces the first sustaining electrode. Can be.

In the present invention, the first discharge sustaining electrode and the
2 (L) ₁) Is essentially a task
Can be any value, but 1 × 10^-Fourm or less, preferred
Or 5 × 10^-Fivem, more preferably 4 × 10^-Fivem
Hereinafter, still more preferably 2.5 × 10^-Fivem or less
It is desirable. First discharge sustain electrode and second discharge sustain
Electrode spacing (L₁The minimum value of) takes into account the thickness of the dielectric layer, etc.
In consideration of the above, the first sustaining electrode and the second sustaining electrode
The interval may be set so that dielectric breakdown does not occur between them.

In the plasma display device of the present invention, the pressure of the rare gas sealed in the space surrounded by the dielectric layer, the phosphor layer, and the pair of partition walls is 1 × 10 ² Pa (0.001
Atm) to 5 × 10 ⁵ Pa (5 atm), preferably 1 ×
It is desirable that the pressure be 10 ³ Pa (0.01 atm) to 4 × 10 ⁵ (4 atm). When the distance L1 between the _first and second discharge sustaining electrodes is less than 5 × 10 ⁻⁵ m, the pressure of the rare gas in the space is set to 1.0 × 1 ^−5.
0 ² Pa (0.001 atm) or more and 3.0 × 10 ⁵ Pa (3
Pressure) or less, preferably 1.0 × 10 ³ Pa (0.01
Pressure) to 2.0 × 10 ⁵ Pa (2 atm), more preferably 1.0 × 10 ⁴ Pa (0.1 atm) to 1.0
It is desirable that the pressure be not more than × 10 ⁵ Pa (1 atm). By setting the pressure in such a range, the phosphor layer emits light when irradiated with vacuum ultraviolet rays mainly generated based on the cathode glow in a rare gas. However, within such a pressure range, the higher the pressure, the lower the sputtering rate of the various members constituting the plasma display device, so that the life of the plasma display device can be extended.

The conductive material forming the first sustaining electrode and the second sustaining electrode may be different from the conductive material forming the first bus electrode and the second bus electrode. preferable. The first bus electrode and the second bus electrode are typically made of a metal material such as Ag, Au, A
1, Ni, Cu, Mo, Cr, and a Cr / Cu / Cr laminated film. In the reflective plasma display device, the first bus electrode and the second bus electrode made of such a metal material reduce the amount of visible light transmitted from the phosphor layer and passing through the first substrate, Since it can be a factor in lowering the brightness of the display screen, it is preferable to form the bus electrode as thin as possible within a range in which the necessary electric resistance value can be obtained. As a method for forming the first bus electrode and the second bus electrode, for example, an evaporation method, a sputtering method, or a printing method (screen printing method) may be appropriately selected depending on a conductive material to be used. That is, the first bus electrode and the second bus electrode having a predetermined pattern may be formed from the beginning using an appropriate mask or screen,
After forming the conductive material layer over the entire surface, the first bus electrode and the second bus electrode may be formed by patterning the conductive material layer.

The conductive material forming the first and second discharge sustaining electrodes differs depending on whether the plasma display device is of a transmission type or a reflection type. In the transmission type plasma display device, since the light emission of the phosphor layer is observed through the second substrate, the transparent / opaque conductive material constituting the first and second discharge sustaining electrodes is different. It does not matter, however, since the second electrode is provided on the second substrate, it is desirable that the second electrode be transparent. In the reflection type plasma display device, since the light emission of the phosphor layer is observed through the first substrate, it does not matter whether the conductive material constituting the second electrode is transparent or opaque. It is desired that the electrode and the second sustaining electrode are transparent. The transparency / opacity described here is based on the light transmittance of the conductive material at an emission wavelength (visible light region) specific to the phosphor material. That is, if it is transparent to the light emitted from the phosphor layer, it can be said that the conductive material forming the first and second sustain electrodes is transparent. Ni, Al, Au, A as opaque conductive materials
g, Al, Pd / Ag, Cr, Ta, Cu, Ba, La
Materials such as B ₆ and Ca _0.2 La _0.8 CrO ₃ can be used alone or in appropriate combination. Examples of the transparent conductive material include ITO (indium tin oxide) and SnO ₂ . As a method for forming the first and second discharge sustaining electrodes, for example, an evaporation method, a sputtering method, and a printing method (screen printing method) may be appropriately selected depending on a conductive material to be used. That is, the first sustaining electrode and the second sustaining electrode having a predetermined pattern may be formed from the beginning using an appropriate mask or screen, or after the conductive material layer is formed on the entire surface,
The first sustaining electrode and the second sustaining electrode may be formed by patterning the conductive material layer.

In the present invention, it is preferable that a protective layer is formed on at least the surface of the second portion of the dielectric layer covering the first and second discharge sustaining electrodes. The protective layer may be provided not only on the second portion but also on the surface of the first portion of the dielectric layer covering the first bus electrode and the second bus electrode. The protective layer can have a single-layer structure or a laminated structure. In the method for manufacturing a plasma display device according to the present invention, a protective layer may be formed after step (b), or after covering the first electrode with the first dielectric layer in step (b), Forming a protective layer, and then forming a second dielectric layer on portions of the first dielectric layer on the first bus electrode and the second bus electrode (more specifically, on the protective layer) May be formed. Magnesium oxide (Mg) is used as a material for forming the protective layer having a single-layer structure.
O), magnesium fluoride (MgF ₂ ), calcium fluoride (CaF ₂ ), and aluminum oxide (Al ₂ O ₃ ). Among them, magnesium oxide is a suitable material having characteristics such as being chemically stable, having a low sputtering rate, having a high light transmittance at the emission wavelength of the phosphor layer, and having a low discharge starting voltage. Incidentally, the protective layer may have a laminated structure composed of at least two kinds of materials selected from the group consisting of magnesium oxide, magnesium fluoride and aluminum oxide. By forming the protective layer, direct contact between ions and electrons and the first electrode group can be prevented, so that abrasion of the first electrode group can be prevented. The protective layer also has a function of emitting secondary electrons required for glow discharge.

Although the second electrode is provided on the second substrate, if the function of the phosphor layer as a dielectric layer is insufficient, a dielectric is provided between the second electrode group and the phosphor layer. A body membrane may be provided. Low melting point glass or S
iO ₂ can be mentioned.

The phosphor layer includes a phosphor material that emits red light,
It is composed of a phosphor material selected from the group consisting of a phosphor material that emits green light and a phosphor material that emits blue light,
It is provided above the second substrate. Specifically, for example, a phosphor layer (red phosphor layer) made of a phosphor material that emits red light is provided above the second electrode, and a phosphor layer made of the phosphor material that emits green light is provided. A body layer (green phosphor layer) is provided above another second electrode, and a phosphor layer (blue phosphor layer) made of a phosphor material that emits blue light is used as a further second electrode. The phosphor layers that emit light of these three primary colors are provided as a set and are provided in a predetermined order. Then, one first electrode (a paired first bus electrode and a second bus electrode, and a combination of a paired first sustaining electrode and a second sustaining electrode) and a combination thereof. A region where one set of phosphor layers emitting three primary colors overlaps corresponds to one pixel. The red phosphor layer, the green phosphor layer, and the blue phosphor layer may be formed in a stripe shape or in a lattice shape. When the red phosphor layer, the green phosphor layer, and the blue phosphor layer are formed in a stripe shape, one red phosphor layer is formed above one second electrode, and one green phosphor layer is formed. One blue phosphor layer is formed above one second electrode, and one blue phosphor layer is formed above one second electrode.
On the other hand, when the red phosphor layer, the green phosphor layer, and the blue phosphor layer are formed in a lattice, the red phosphor layer, the green phosphor layer, and the blue phosphor layer are provided above one second electrode. The body layers are formed in a predetermined order.

Note that the phosphor layer may be formed directly on the second electrode, or may be formed so as to extend from above the second electrode to the side surface of the partition. Alternatively, the phosphor layer
It may be formed on a dielectric film provided on the second electrode, or may be formed so as to hang from the dielectric film provided on the second electrode to the side surface of the partition. Further, the phosphor layer may be formed only on the side surface of the partition. “The phosphor layer is provided above the second electrode” is a concept that encompasses all of the various forms described above. In some cases, a protective film made of magnesium oxide (MgO), magnesium fluoride (MgF ₂ ), calcium fluoride (CaF ₂ ), or the like may be formed on the surface of the phosphor layer or the partition.

As the phosphor material constituting the phosphor layer,
Among the known phosphor materials, high quantum efficiency, vacuum
Select a phosphor material that is less saturated with ultraviolet light
Can be used. Because color display is assumed,
Color purity is close to the three primary colors specified by NTSC.
White balance when mixed, short afterglow time,
Combination of phosphor materials with almost equal afterglow time
Preferably. Emits red light when irradiated with vacuum ultraviolet light
(Y)_TwoO_Three: Eu), (YBO)_Three
Eu), (YVO_Four: Eu), (Y_0.96P_0.60V
_0.40O_Four: Eu_0.04), [(Y, Gd) BO_Three: Eu],
(GdBO_Three: Eu), (ScBO)_Three: Eu), (3.5
MgO ・ 0.5MgF_Two・ GeO_Two: Mn)
Can be. Fireflies that emit green light when irradiated with vacuum ultraviolet light
As the optical material, (ZnSiO_Two: Mn), (BaAl)
₁₂O₁₉: Mn), (BaMg)_TwoAl₁₆O₂₇: Mn),
(MgGa_TwoO_Four: Mn), (YBO)_Three: Tb), (Lu
BO_Three: Tb), (Sr_FourSi_ThreeO₈Cl _Four: Eu)
can do. Emits blue light when irradiated with vacuum ultraviolet light
(Y)_TwoSiO_Five: Ce), (Ca)
WO_Four: Pb), CaWO_Four, YP_0.85V_0.15O_Four, (B
aMgAl₁₄O_{twenty three}: Eu), (Sr_TwoP_TwoO₇: Eu),
(Sr_TwoP_TwoO₇: Sn). fluorescence
As a method of forming a body layer, a thick film printing method,
Laying method, adhesive material in advance on the phosphor layer
Method to attach phosphor particles to the surface, photosensitivity
Fluorescent light by exposure and development using phosphor paste
Method of patterning body layer, forming phosphor layer on the entire surface
To remove unnecessary parts by sandblasting after
Can be mentioned.

The partition may be configured to extend in parallel with the second electrode in a region between the adjacent second electrodes. That is, a structure in which one second electrode extends between a pair of partition walls can be employed. In some cases, the partition wall includes a first partition wall extending parallel to the bus electrode in a region between the adjacent bus electrodes, and a second partition wall extending parallel to the second electrode in a region between the adjacent second electrodes. (That is, a lattice shape). Such a lattice-shaped (cross-girder) partition wall has conventionally been employed in a DC-driven plasma display device, but can also be applied to an AC-driven plasma display device of the present invention.

As the constituent material of the partition, a conventionally known insulating material can be used. For example, a material obtained by mixing a metal oxide such as alumina with a widely used low melting glass can be used. Examples of the method for forming the partition include a screen printing method, a sand blast forming method, a dry film method, and a photosensitive method. Here, with the screen printing method, an opening is formed in a portion of the screen corresponding to a portion where a partition is to be formed, and a material for forming a partition on the screen is passed through the opening using a squeegee,
After forming a partition-forming material layer on a second substrate or a dielectric layer (hereinafter, collectively referred to as a second substrate or the like), the partition-forming material layer is fired. is there. In addition, the sandblasting method is, for example, using a screen printing or a roll coater, a doctor blade, a nozzle discharge type coater, or the like, forming a material layer for forming a partition on a second substrate or the like, drying the material layer, and then drying the material. Is covered with a mask layer, and then the exposed portion of the partition-forming material layer is removed by sandblasting. The dry film method is a method of laminating a photosensitive film on a second substrate or the like, removing the photosensitive film at a portion where a partition is to be formed by exposure and development, and embedding a material for forming a partition into an opening formed by the removal. And firing. The photosensitive film is burned and removed by baking, and the material for forming the partition embedded in the opening remains, thereby forming a partition. The photosensitive method is a method of forming a photosensitive material layer for forming a partition on a second substrate or the like, patterning this material layer by exposure and development, and then performing baking. Note that by making the partition walls black, a so-called black matrix can be formed, and the display screen can have high contrast. Examples of a method of blackening the partition include a method of providing a light absorbing layer such as a photosensitive silver paste layer and a low reflection chromium layer on the top of the partition, and a method of forming the partition using a black colored color resist material. be able to.

As the constituent materials of the first substrate and the second substrate, high strain point glass, soda glass (Na ₂ O.CaO.
SiO ₂ ), borosilicate glass (Na ₂ O.B ₂ O ₃ .Si
O ₂ ), forsterite (2MgO.SiO ₂ ), and lead glass (Na ₂ O.PbO.SiO ₂ ). The constituent materials of the first substrate and the second substrate may be the same or different.

The following points are required for the rare gas sealed in the space. It is chemically stable from the viewpoint of extending the life of the plasma display device and the gas pressure can be set high. From the viewpoint of increasing the brightness of the display screen, the emission intensity of vacuum ultraviolet rays is large. Visible from vacuum ultraviolet rays. The wavelength of the emitted vacuum ultraviolet rays is long from the viewpoint of increasing the energy conversion efficiency to light rays. The discharge starting voltage is low from the viewpoint of reducing power consumption.

As a rare gas, He (resonance line wavelength = 5)
8.4 nm), Ne (74.4 nm), Ar (10
7 nm), Kr (124 nm), Xe (147 n)
It is possible to use m) alone or to mix them, but a mixed gas which is expected to lower the firing voltage due to the Penning effect is particularly useful. As such a mixed gas, a Ne—Ar mixed gas, a He—Xe mixed gas, a N
An e-Xe mixed gas, a He-Kr mixed gas, and a Ne-Kr mixed gas can be exemplified. Xe having the longest resonance line wavelength among these rare gases is 172n in wavelength.
Since it also radiates vacuum ultraviolet light having a strong m, it is a suitable rare gas.

Here, the light emission state of the glow discharge in the discharge cell will be described with reference to FIGS. FIG. 15A schematically shows a light emitting state when DC glow discharge is performed in a discharge tube in which a rare gas is sealed. From the cathode to the anode, an Aston dark part A, a cathode glow B, a cathode dark part (Crooks dark part) C, a negative glow D, a Faraday dark part E, a positive column F, and an anode glow G appear in this order. In the AC glow discharge, since the cathode and the anode repeat inversion at a predetermined frequency, the positive column F is located at the center between the electrodes, and the Faraday dark portion E, the negative glow D, the negative dark portion C, It is considered that the cathode glow B and the aston dark part A appear symmetrically in this order. The state shown in FIG.
This occurs when the distance between the electrodes is sufficiently long, such as a fluorescent lamp.

As the distance between the electrodes is reduced, the length of the positive column F is reduced. When the distance between the electrodes is further reduced, the positive column F disappears as shown in FIG. 16A, the negative glow D is located at the center between the electrodes, and the cathode dark portion C and the cathode It is considered that the glow B and the aston dark part A appear symmetrically in this order. The state shown in FIG.
This is a state that occurs when the distance between the electrodes is about 1 × 10 ⁻⁴ m. However, in the plasma display device of the present invention, the first glow discharge electrode and the second glow discharge electrode are arranged in parallel to maintain a glow discharge. It is formed in a space region near the surface portion of the first dielectric layer covering the corresponding first discharge sustain electrode or the surface portion of the first dielectric layer covering the second discharge sustain electrode.

On the other hand, when the distance between the electrodes is less than 5 × 10 ⁻⁵ m, the cathode glow B is located at the center between the electrodes as schematically shown in FIG. Is considered to appear on both sides of Aston. In some cases, some negative glows may exist. However, in the plasma display device of the present invention, the pair of the first sustaining electrode and the second sustaining electrode for maintaining the glow discharge are arranged in parallel. It is formed in a space region near the surface portion of the first dielectric layer covering the corresponding first discharge sustain electrode or the surface portion of the first dielectric layer covering the second discharge sustain electrode. As described above, the distance between the first discharge sustaining electrode and the second discharge sustaining electrode is set to less than 5 × 10 ⁻⁵ m, and the pressure in the space is set to 1.0 × 10 ² Pa (0.001 Pressure) or more 3.
By setting the pressure to 0 × 10 ⁵ Pa (3 atm) or less, it is possible to use the cathode glow as the discharge mode. Therefore, as a result of achieving high AC glow discharge efficiency, high luminous efficiency and luminance can be obtained in the plasma display device.

In the present invention, the first portion of the dielectric layer covering the first bus electrode and the second bus electrode is composed of the first dielectric layer and the second dielectric layer. It is possible to reliably prevent abnormal discharge from occurring between the edge of the top surface of the bus electrode and the second electrode. The dielectric layer as a whole has a function of accumulating wall charges generated during the address period, a function as a resistor for limiting an excessive discharge current, and a memory function for maintaining a discharge state.

[0044]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings based on embodiments of the present invention (hereinafter, abbreviated as embodiments).

Embodiment 1 Embodiment 1 relates to an AC-driven plasma display device according to the first configuration of the present invention. This AC drive type plasma display device is a so-called three-electrode type and belongs to a surface discharge type. FIG. 2 is a schematic exploded perspective view of a part of the plasma display device according to the first embodiment.
This plasma display device has a first panel 10 and a second panel 20. First panel (front panel) 1
Numeral 0 covers a first substrate 11 made of, for example, glass, a first electrode group including a plurality of first electrodes provided on the first substrate 11, and the first electrode. A dielectric layer composed of a dielectric layer 14A and a second dielectric layer 14B, and magnesium oxide ((M
gO).

In the plasma display device shown in FIG.
Discharge sustaining electrodes 12A, 12B and bus electrodes 13A, 13B
FIG. 1 schematically shows the positional relationship between the partition 25 and the partition wall 25. Note that a region surrounded by a dotted line corresponds to one pixel. For clarity of each component, it is hatched in FIG. The outer shape of one pixel is substantially square. One pixel is divided into three sections (discharge cells) by a partition 25, and each of the sections emits one of the three primary colors (R, G, B).

Each first electrode is connected to a first bus electrode 13A.
A first discharge sustaining electrode 12A in contact with the first bus electrode 13A; a second bus electrode 13B extending in parallel with the first bus electrode 13A;
Discharge sustaining electrode 1 facing discharge sustaining electrode 12A
2B. Note that the stripe-shaped first discharge sustaining electrode 12A is formed of the stripe-shaped first bus electrode 1.
A second discharge sustaining electrode 12B extending in parallel with 3A and extending in a first direction extends in parallel with the second bus electrode 13B having a stripe shape. Specifically, the first bus electrode 13A is formed on the first discharge sustaining electrode 12A near the edge of the first discharge sustaining electrode 12A. On the other hand, the second bus electrode 13B is formed on the second discharge sustaining electrode 12B near the edge of the second discharge sustaining electrode 12B.
Further, the first bus electrode 13A and the second bus electrode 13A
B is common to the discharge cells adjacent along the first direction, and the first and second discharge sustaining electrodes 12A and 12B are also common to the discharge cells adjacent to each other along the first direction. . The bus electrodes 13A and 13B are
It is provided to lower the impedance of A and 12B, and is made of a material having lower electric resistivity than the discharge sustaining electrodes 12A and 12B. Discharge sustaining electrodes 12A, 12B
May be formed from a transparent conductive material such as ITO. On the other hand, the bus electrodes 13A and 13B may be made of a material having a lower electrical resistivity than ITO, for example, a chromium / copper / chrome laminated film. Note that the line width of the first and second bus electrodes 13A and 13B corresponds to the display screen (here, the first and second bus electrodes 13A and 13B).
It is preferable to make the width as small as possible (for example, 50 μm width) so as not to impair the luminance of the upper surface of the substrate 11 in FIG. Here, the distance between the first discharge sustaining electrode 12A and the second discharge sustaining electrode 12B (the side surface 12a and the side surface 1A).
The distance L ₁₎ between the 2b 5 × less than 10 ^-5 m (e.g. 2
0 μm). A glow discharge is generated between the first sustaining electrode 12A and the second sustaining electrode 12B.

FIG. 3A is a schematic partial end view when the first panel 10 is cut along the arrow BB in FIG. The dielectric layer includes a first portion and a second portion. That is, the first part of the dielectric layer covering the first bus electrode 13A and the second bus electrode 13B is composed of the first dielectric layer 14A and the second dielectric layer 14B, and the first discharge is performed. The second part of the dielectric layer covering the sustain electrode 12A and the second discharge sustain electrode 12B is composed of the first dielectric layer 14A. Here, the first portion of the dielectric layer is formed from the first substrate 11 side to the first dielectric layer 14A,
The second dielectric layers 14B are stacked in this order. First dielectric layer 14A made of silicon oxide (SiO ₂ )
Are the first sustaining electrode 12A, the second sustaining electrode 1
Each side and top surface of 2B is coated. on the other hand,
The second dielectric layer 14B made of a fired body of a low-melting glass paste is placed on the first dielectric layer 14A covering the first bus electrode 13A and the second bus electrode 13B. Is formed. The thickness of the first dielectric layer 14A on the top surface of the first discharge sustaining electrode 12A and on the top surface of the second discharge sustaining electrode 12B was 3 μm. Also, on the top surface of the first bus electrode 13A, and on the second bus electrode 1A.
The thickness of the second dielectric layer 14B on the top surface of 3B is 1
It was set to 0 μm. In addition, on the first substrate 11 between the first bus electrode 13A constituting the first electrode and the second bus electrode 13B constituting the first electrode adjacent to the first electrode. , A first dielectric layer 14A is formed.

On the other hand, the second panel (rear panel) 20
Is formed of a striped silver or aluminum extending in the second direction at a predetermined angle (for example, 90 degrees) with the direction in which the first electrode extends with respect to the second substrate 21 made of, for example, glass. A second electrode (also referred to as an address electrode or a data electrode) 22
It comprises an electrode group, a partition wall 25 provided between adjacent second electrodes 22, and a phosphor layer 24 provided above the second electrodes 22. Note that a dielectric film 23 is formed on the second substrate 21 including the second electrode 22. The partition wall 25 made of an insulating material is formed in a region between the adjacent second electrodes 22 on the dielectric film 23, and extends in parallel with the second electrode 22. The phosphor layer 24 is provided over the dielectric film 23 and on the side wall surface of the partition 25. The phosphor layer 24 is composed of a red phosphor layer 24R, a green phosphor layer 24G, and a blue phosphor layer 24B, and the phosphor layers 24R, 24 emitting the three primary colors are used.
G and 24B constitute one set and are provided on the second electrode 22 in a predetermined order. The second electrode 22 is
In addition to contributing to the initiation of glow discharge together with the first and second discharge sustaining electrodes 12A and 12B, the light emission generated from the phosphor layer 24 is reflected to the display screen side, thereby contributing to improving the luminance of the display screen.

FIG. 2 is a schematic exploded perspective view. In practice, the top of the partition 25 on the second panel 20 is in contact with the protective layer 15 on the first panel 10. The first panel 10 and the second panel 20 are disposed so as to face each other so that the protective layer 15 and the phosphor layer 24 face each other, and are bonded to each other at a peripheral portion thereof via a seal layer (not shown). The paired first bus electrodes 13A, 13B, and the paired sustain electrodes 1 extending from these bus electrodes 13A, 13B.
A region where 2A, 12B and the second electrode 22 located between the two partition walls 25 overlap corresponds to a discharge cell. Also, a pair of the first bus electrode 13A and the second bus electrode 13B, a pair of the first sustain electrode 12A and the second
And the three primary color phosphor layers 24R, 2B.
An area where one set of 4G and 24B overlaps corresponds to one pixel. In a space formed by the first panel 10 and the second panel 20, for example, a Ne—Xe mixed gas (for example, a Ne50% -Xe50% mixed gas) has a pressure of 8 × 10.
It is sealed at ⁴ Pa (0.8 atm). That is, a rare gas is sealed in a space surrounded by the adjacent partition wall 25, the phosphor layer 24, and the protective layer 15.

Next, an example of the AC glow discharge operation of the plasma display device having such a configuration will be described. First, for example, a pulse voltage higher than the discharge start voltage V _bd is applied to all the first bus electrodes 13A for a short time. As a result, a glow discharge occurs, and wall charges are generated on the surface of the first dielectric layer 14 near one of the sustain electrodes due to dielectric polarization. I do. After that, while applying a voltage to the second electrode (address electrode) 22, a voltage is applied to one of the bus electrodes included in the cell where the display is not performed.
And a glow discharge is generated between one of the sustain electrodes and
Erase the accumulated wall charges. This erasing discharge is sequentially performed on each second electrode 22. On the other hand, no voltage is applied to one bus electrode included in the cell for displaying. This maintains the accumulation of wall charges. Then again,
By applying a predetermined pulse voltage between all the paired bus electrodes 13A and 13B, the paired discharge sustaining electrodes 12A and 1A in the cell in which the wall charges have been accumulated.
Glow discharge starts between 2B, and in the discharge cell,
The phosphor layer excited by the irradiation of the vacuum ultraviolet light generated based on the glow discharge in the rare gas exhibits a specific emission color according to the type of the phosphor material. Note that the phases of the sustaining voltage applied to one bus electrode and the other bus electrode are shifted by half a cycle, and the polarity of the sustaining electrode is inverted according to the frequency of the alternating current.

Alternatively, another example of the AC glow discharge operation of the plasma display device having such a configuration will be described. First, an erasing discharge is performed on all the pixels to initialize all the pixels, and then a discharging operation is performed. The discharge operation is performed by dividing into an address period in which wall charges are generated on the surface of the first dielectric layer 14 by an initial discharge and a discharge maintenance period in which glow discharge is maintained. In the address period, a pulse voltage lower than the discharge start voltage V _bd is applied to one of the selected bus electrodes and the selected second electrode 22 for a short time. One of the bus electrodes to which the pulse voltage is applied and the second electrode 22
Is selected as a display pixel, and in this overlap region, wall charges are generated on the surface of the first dielectric layer 14 due to dielectric polarization, and the wall charges are accumulated. In the subsequent sustain period, a sustain voltage V _sus lower than V _bd is applied to the paired bus electrodes 13A and 13B. If the sum of the wall voltage V _w induced by the wall charge and the sustaining voltage V _sus becomes greater than the _firing voltage V _bd (ie, V _w + V _sus >)
V _bd ), glow discharge is started. The phases of the sustaining voltage V _sus applied to one bus electrode and the other bus electrode are shifted by half a cycle, and the polarity of the sustaining electrode is inverted according to the frequency of the alternating current.

In the pixel in which the AC glow discharge is maintained, the phosphor layer 24 is excited by irradiating vacuum ultraviolet rays radiated based on the excitation of the rare gas generated in the space, and a characteristic corresponding to the kind of the phosphor material is used. Light emission of the following colors is obtained.

The outline of the method of manufacturing the plasma display device according to the first embodiment will be described below.

The first panel 10 can be manufactured as follows. First, an ITO layer is formed on the entire surface of the first substrate 11 by, for example, a sputtering method, and the ITO layer is patterned into stripes by a photolithography technique and an etching technique, thereby forming the first and second discharge sustaining electrodes 12A and 12B. Can be formed. Next, a chromium / copper / chromium laminated film is formed on the entire surface by, for example, a sputtering method, and the chromium / copper / chromium laminated film is patterned by a photolithography technique and an etching technique, thereby forming the first and second bus electrodes 13A, 13B can be formed.

Then, after the first electrodes (12A, 13A, 12B, 13B) are covered with the first dielectric layer 14A, the first bus electrode 13A and the second bus electrode 13B are covered.
The second dielectric layer 14B is formed on the upper portion of the first dielectric layer 14A. Specifically, based on the CVD method, S
A first dielectric layer 14A made of iO ₂ and having a thickness of 3 μm is formed on the entire surface. Thereafter, a low-melting glass paste is applied to the first dielectric layer 14 in a stripe shape by screen printing.
A second dielectric layer 14B composed of a fired body of a low-melting glass paste can be obtained by forming the low-melting glass paste on A and temporarily firing the low-melting glass paste.
After that, a thickness of about 0.
A protective layer 15 made of 6 μm MgO is formed. Through the above steps, the first panel 10 can be completed.

The second panel 20 can be manufactured as follows. First, a silver paste is printed in a stripe shape on the second substrate 21 by, for example, a screen printing method, and the second electrode 22 can be formed through firing. Next, a low-melting glass paste layer is formed on the entire surface by a screen printing method, and the low-melting glass paste layer is baked to form the dielectric film 23. After that, a low-melting glass paste is printed on the dielectric film 23 above the region between the adjacent second electrodes 22 by, for example, a screen printing method, and the partition 25 is formed through firing. The height of the partition 25 is, for example, 1 × 10 ⁻⁴ m (100 μm).
m) to 2 × 10 ⁻⁴ m (200 μm). Next, phosphor slurries of the three primary colors are sequentially printed and fired to form phosphor layers 24R, 24G, and 24B. Through the above steps, the second panel 20 can be completed.

Next, the plasma display device is assembled. First, a seal layer (not shown) made of frit glass is formed on the periphery of the second panel 20 by, for example, screen printing. Next, the first panel 10 and the second panel 20 are bonded together and fired to cure the seal layer. Next, after the space formed between the first panel 10 and the second panel 20 is evacuated, a Ne-Xe mixed gas (for example, a Ne50% -Xe50% mixed gas) is applied at a pressure of 8.
Sealing is performed at × 10 ⁴ Pa (0.8 atm) to seal the space and complete the plasma display device. The bonding of the first panel 10 and the second panel 20 was performed at a pressure of 8 × 10
If the process is performed in a chamber filled with a Ne—Xe mixed gas of ⁴ Pa (0.8 atm), the evacuation step and the sealing step of the Ne—Xe mixed gas can be omitted.

As shown in FIG. 3B, the first panel 10 is cut in the same manner as along the arrow BB in FIG. A first bus electrode 13A constituting an electrode and a first bus electrode 13A adjacent to the first electrode
A first dielectric layer 14A and a second dielectric layer 14B are formed from the first substrate 11 side on the first substrate 11 between the second bus electrode 13B and the second bus electrode 13B. You may. In such a configuration, a low-melting glass paste is applied in a stripe shape to the first dielectric layer 14A by screen printing.
When forming on it, it can be obtained by giving an appropriate pattern to the low melting glass paste.

Further, in the example shown in FIGS. 3A and 3B, the second dielectric layer 14B is formed by forming the first dielectric layer 14B corresponding to the first partition wall 25 provided on the second panel 20. Panel 1
It may be formed above the zero region. That is, the planar shape of the second dielectric layer 14B can be a lattice shape (cross-girder shape). In this case, specifically, the first electrode (12A, 13A, 12B, 13B) is provided in a region of the first panel 10 corresponding to the partition wall 25 provided in the second panel 20.
A first dielectric layer 14A and a second dielectric layer 14B are formed. With such a structure, it is possible to reliably prevent the occurrence of so-called optical crosstalk in which the glow discharge affects adjacent discharge cells.

(Embodiment 2) Embodiment 2 is a modification of the plasma display device of Embodiment 1. Embodiment 2
The difference between the plasma display device of the first embodiment and the plasma display device of the first embodiment is that the first panel 10 is cut in the same manner as shown in FIGS. As shown in the schematic partial end view at the time, the first portion of the dielectric layer is
4B and the first dielectric layer 14A. Except for this point, the plasma display device of the second embodiment has the same configuration as the plasma display device of the first embodiment.

In the plasma display device according to the second embodiment, the second display device made of a fired body of a low-melting glass paste is used.
The dielectric layer 14B covers the side and top surfaces of the first bus electrode 13A and the second bus electrode 13B. Also,
The first dielectric layer 14A made of silicon oxide (SiO ₂ ) has a first bus electrode 13A and a second bus electrode 1A.
On the second dielectric layer 14B covering 3B, and
First discharge sustaining electrode 12A and second discharge sustaining electrode 12
B are formed on the top and side surfaces. In the example shown in FIG. 4A, a first bus electrode 13A constituting the first electrode and a second bus electrode 13B constituting the first electrode adjacent to the first electrode are provided. The first substrate 1 between
On 1, a first dielectric layer 14 </ b> A is formed.

In the structure shown in FIG. 4A, after the first bus electrode 13A and the second bus electrode 13B are covered with the second dielectric layer 14B, the first electrode is connected to the first dielectric layer. It can be obtained by coating with the body layer 14A. Specifically, a low-melting glass paste is applied in a stripe shape to the first and second bus electrodes 13 by screen printing.
The second dielectric layer 14B made of a fired body of the low-melting glass paste can be obtained by forming the low-melting glass paste on the A, 13B and temporarily firing and finally firing the low-melting glass paste. Next, a first dielectric layer 14A made of SiO ₂ and having a thickness of 3 μm may be formed on the entire surface based on the CVD method.

On the other hand, as shown in FIG. 4B, a first bus electrode 13A constituting the first electrode and a second bus electrode constituting the first electrode adjacent to the first electrode are formed. Electrode 13
B, a second dielectric layer 14B and a first dielectric layer 14A may be formed on the first substrate 11 from the first substrate 11 side. In such a configuration, a low-melting glass paste is firstly applied in a stripe shape by a screen printing method.
When forming on the second bus electrodes 13A and 13B, it can be obtained by giving an appropriate pattern to the low-melting glass paste.

In the examples shown in FIGS. 4A and 4B, the second dielectric layer 14B is formed by forming the first panel 10 corresponding to the partition wall 25 provided on the second panel 20. It may be formed above the region. That is, the second dielectric layer 14
The plane shape of B may be a lattice shape (cross-girder shape).
In this case, specifically, in the region of the first panel 10 corresponding to the partition wall 25 provided in the second panel 20, the first panel
(12A, 13A, 12B, 13B), a second dielectric layer 14B, and a first dielectric layer 14A. With such a structure, it is possible to reliably prevent the occurrence of so-called optical crosstalk in which the glow discharge affects adjacent discharge cells.

Embodiment 3 Embodiment 3 relates to a plasma display device according to the second configuration of the present invention. This AC drive type plasma display device is also a so-called three-electrode type and belongs to a surface discharge type. The plasma display device according to the third embodiment is also called an ALIS (Alternate Lighting of Surfaces) type plasma display device. Discharge sustaining electrodes 12A and 12B in the plasma display device according to the third embodiment.
FIG. 5 schematically shows an arrangement relationship between the bus electrodes 13A and 13B and the partition wall 25. Note that a region surrounded by a dotted line corresponds to one pixel. In FIG. 5, hatching is used to clarify each component. Although shown as a rectangle in FIG. 5, the outer shape of one pixel is actually a square. One pixel is a partition 2
5, divided into three sections (discharge cells),
From each section, one of the three primary colors (R, G, B) emits light. FIG. 6 is a schematic exploded perspective view of a part of the plasma display device according to the third embodiment. This plasma display device has a first panel 10 and a second panel 20. The first panel (front panel) 10 includes, for example, a first substrate 11 made of glass, a first electrode group including a plurality of first electrodes provided on the first substrate 11,
And a dielectric layer composed of a first dielectric layer 14A and a second dielectric layer 14B, and a protective layer 15 made of magnesium oxide ((MgO)) formed on the dielectric layer. Consisting of

In the plasma display device according to the third embodiment,
Comprises: a first bus electrode forming a first electrode;
Bus electrode forming a first electrode adjacent to the first electrode
Are common. That is, these bus electrodes are striped
One conductive material layer (referred to as a bus electrode forming conductive material layer)
). Such a common first bus electrode
And the second bus electrode are indicated by a common bus electrode 13.
Each first electrode is provided with a first bus electrode (common bus electrode) 13.
And the first sustaining electrode 12 in contact with the common bus electrode 13
A and a second bus extending in parallel with the common bus electrode 13.
Electrode (adjacent common bus electrode 13) and the common bus
Contact with the first electrode 13 and the first sustaining electrode 12A.
And a second discharge sustaining electrode 12B. still,
A first sustaining electrode 12A constituting the first electrode;
Of the second electrode constituting the first electrode adjacent to the first electrode of
The sustaining electrode 12B is a stripe-shaped conductive material.
Layer (referred to as the conductive material layer that constitutes the sustaining electrode)
Have been. The common bus electrode 13 is a discharge sustaining electrode.
It is formed at the center of the constituent conductive material layer. Bus electrode structure
The formed conductive material layer and the conductive material layer constituting the discharge sustaining electrode are the first conductive material layer.
Extending in the direction of Further, the common bus electrode 13 is
1 is common to adjacent discharge cells along the direction
Of the second sustaining electrode 12A and the second sustaining electrode 12B
It is common to the discharge cells adjacent along the first direction. Ba
Electrode forming conductive material layer and discharge sustaining electrode forming conductive material layer
Is, for example, chromium, as in the first embodiment.
/ Copper / chromium laminated film, ITO. still,
First sustaining electrode 12A and second sustaining electrode 12B
(A distance L between the side surface 12a and the side surface 12b)
₁) Is 5 × 10^-Fivem (for example, 20 μm). No.
The first sustaining electrode 12A and the second sustaining electrode 12B
Glow discharge occurs between the two.

The first panel 1 along the line BB- in FIG.
FIG. 7 (A) shows a schematic partial end view when the 0 is cut. The dielectric layer includes a first portion and a second portion. That is, the first portion of the dielectric layer covering the common bus electrode 13 is composed of the first dielectric layer 14A and the second dielectric layer 14B,
A and a second portion of the dielectric layer covering the second sustaining electrode 12B is composed of the first dielectric layer 14A. Here, the first portion of the dielectric layer is formed from the first substrate 11 side.
The first dielectric layer 14A and the second dielectric layer 14B are stacked in this order. The first dielectric layer 14A made of silicon oxide (SiO ₂ )
A, each side surface and top surface of the second sustaining electrode 12B are covered. On the other hand, the second dielectric layer 14B made of a fired body of the low-melting glass paste is formed on a portion of the first dielectric layer 14A covering the common bus electrode 13. The thickness of the first dielectric layer 14A on the top surface of the first discharge sustaining electrode 12A and on the top surface of the second discharge sustaining electrode 12B was 3 μm. The second dielectric layer 14B on the top surface of the common bus electrode 13
Was 10 μm in thickness.

The other configurations of the second panel 20 and the plasma display device may be the same as those of the first embodiment, and thus detailed description is omitted. Here, the paired common bus electrodes 13, the paired discharge sustaining electrodes 12 </ b> A and 12 </ b> B extending from these common bus electrodes 13, and the second electrode 22 located between the two partition walls 25 overlap. The region corresponds to a discharge cell. Further, the paired common bus electrodes 13, the paired first and second discharge sustaining electrodes 12A and 12B, and the three primary color phosphor layers 24R,
An area where one set of 24G and 24B overlaps corresponds to one pixel.

Since the method of manufacturing the plasma display device according to the third embodiment can be substantially the same as the method of manufacturing the plasma display device described in the first embodiment, a detailed description is omitted. .

In driving the plasma display device having such a configuration, one discharge sustaining electrode forming conductive material layer corresponds to two upper and lower discharge sustaining electrodes. Then, the odd display lines and the even display lines are displayed separately in different fields, and this is alternately repeated to display the entire screen of the plasma display device. The details are disclosed in, for example, JP-A-9-160525.

As in the second embodiment, the first portion of the dielectric layer is moved from the first substrate 11 side to the second dielectric layer 1.
4B and the first dielectric layer 14A may be laminated in this order. FIG. 7B is a schematic partial end view when the first panel of the plasma display device having such a configuration is cut along the line BB in FIG. In this plasma display device, the second dielectric layer 14B made of a fired body of a low-melting glass paste covers the side surface and the top surface of the common bus electrode 13. The first dielectric layer 14 made of silicon oxide (SiO ₂ )
A is on the second dielectric layer 14B covering the common bus electrode 13, and the first discharge sustaining electrode 12A and the second
Are formed on the top and side surfaces of the discharge sustaining electrode 12B.

The structure shown in FIG. 7B is obtained by covering the common bus electrode 13 with the second dielectric layer 14B and then covering the first electrode with the first dielectric layer 14A. be able to. Specifically, a low-melting glass paste is formed in a stripe shape on the common bus electrode 13 by a screen printing method, and the low-melting glass paste is temporarily baked and finally baked to obtain a sintered body of the low-melting glass paste. The configured second dielectric layer 14B can be obtained. Next, a first dielectric layer 14A made of SiO ₂ and having a thickness of 3 μm may be formed on the entire surface based on the CVD method.

In the example shown in FIGS. 7A and 7B, the second dielectric layer 14B is formed by forming the first panel 10 corresponding to the partition wall 25 provided on the second panel 20. It may be formed above the region. That is, the second dielectric layer 14
The plane shape of B may be a lattice shape (cross-girder shape).
In this case, specifically, in the region of the first panel 10 corresponding to the partition wall 25 provided in the second panel 20, the first panel
Electrodes (12A, 12B, 13), second dielectric layer 14
B, a first dielectric layer 14A is formed. With such a structure, it is possible to reliably prevent the occurrence of so-called optical crosstalk in which the glow discharge affects adjacent discharge cells.

Although the present invention has been described based on the embodiments of the present invention, the present invention is not limited to these embodiments. The first discharge sustaining electrode 12A and the second discharge sustaining electrode 12B are not common to adjacent discharge cells along the first direction, and may be formed between a pair of partition walls (that is, each discharge sustaining electrode 12B). It may be formed for each cell).

FIG. 8 schematically shows a specific arrangement of the discharge sustaining electrodes 12A and 12B, the bus electrodes 13A and 13B, and the partition wall 25. In this example, the partition 25 and the partition 25
Between the first bus electrode 13A and the second bus electrode 13B, the first discharge sustaining electrode 12A extends in parallel with the second direction, and 2
From the bus electrode 13B to the second discharge sustaining electrode 12B.
Glow discharge extends between the front end 12a 'of the first discharge sustaining electrode 12A and the front end 12b' of the second discharge sustaining electrode 12B. Occurs. In addition, the tip 12a 'of the first discharge sustaining electrode 12A and the tip 1 of the second discharge sustaining electrode 12B.
The shape of 2b 'can be a straight line or a zigzag shape (for example, a combination of "-", a combination of "S" or a combination of arcs, and a combination of arbitrary curves). With this configuration, the area of the discharge sustaining electrode can be reduced, so that the electrode capacity can be reduced and power consumption can be reduced.

Alternatively, the discharge sustaining electrodes 12A, 12B
FIG. 9 shows an arrangement relationship between the bus electrodes 13A and 13B and the partition 25.
FIG. 11 is a schematic exploded perspective view of a part of FIG.
As shown in (1), each first electrode is divided into (A) a first bus electrode 13A extending in a first direction and (B) a first bus electrode 1A.
A second bus electrode 13B extending in parallel with 3A, (C) between the partition 25 and the partition 25, from the first bus electrode 13A toward the second bus electrode 13B, and the second bus electrode 13B; , The first sustaining electrode 12A extending in parallel with the second direction, and (D) the partition 25 and the partition 25
Between the second bus electrode 13B and the first bus electrode 1
A second discharge sustaining electrode 12B extending in parallel with the second direction, facing the first discharge sustaining electrode 12A, toward 3A and before the first bus electrode 13A may be used. Then, a portion 12a ″ of the first discharge sustaining electrode 12A facing the second discharge sustaining electrode 12B,
Second sustaining electrode 1 facing the second sustaining electrode 12A
A glow discharge is generated between the portion 12b ″ of 2B and the portion 12b ″.

The number of the first discharge sustaining electrodes 12A extending from the first bus electrode 13A in the region sandwiched by the pair of partition walls 25 is N ₁ , and the second discharge sustaining electrode extending from the second bus electrode 13B is N 2. when the number of electrodes 12B and a n _2, may be n ₁ = n ₂ = 1, where n is an integer of 1 or more, may be used as the _{n 1 = 2n-1, n} 2 = 2n,
N ₁ = N ₂ = 2n.

In the plasma display device having the configuration shown in FIG. 9, the first sustaining electrode 12A and the second sustaining electrode 12B extend to face each other.
The interval between the sustaining electrode 12A and the second sustaining electrode 12B is preferably a predetermined interval, and more preferably a constant interval. The planar shape of the first sustaining electrode 12A and the second sustaining electrode 12B is substantially rectangular (that is, the first sustaining electrode 12A and the second sustaining electrode 12B are linear). It can also be in a zigzag shape (for example, a combination of "-", a combination of "S" or an arc, or a combination of arbitrary curves) (see FIG. 9). In the latter case, the first and second discharge sustaining electrodes 12A and 12B are opposed to each other in order to prevent the occurrence of abnormal discharge between the first and second discharge sustaining electrodes 12A and 12B. Part 12
It is preferable that a "and 12b" have no corners. Alternatively, in order to prevent the occurrence of abnormal discharge from the corner (corner) of the tip of the first discharge sustaining electrode 12A or the corner (corner) of the tip of the second discharge sustaining electrode 12B, The tip of the first discharge sustaining electrode 12A and the tip of the second discharge sustaining electrode 12B are rounded or
Preferably, the corners are rounded. That is, as shown in FIG. 10, the tip of the first discharge sustaining electrode 12A and the second
It is preferable that the tip of the discharge sustaining electrode 12B is rounded or rounded.

Further, abnormal discharge between the tip of the first sustaining electrode 12A and the second bus electrode 13B is prevented, or the tip of the second discharge sustaining electrode 12B and the first bus electrode 13B are prevented. 13A to prevent abnormal discharge between
The distance between the sustain electrode 12A and the second sustain electrode 12B is L ₁ , the distance between the first bus electrode 13A and the tip of the second sustain electrode 12B, or the second bus. when the distance between the electrode 13B and the front end portion of the first discharge sustaining electrodes 12A was L _2, it is preferable to satisfy L ₁ <L _2. Specifically, for example, L ₁ = 5 × 10 ⁻⁵ m
(50 μm) and L ₂ = 8 × 10 ⁻⁵ m (80 μm).

In the configuration shown in FIG. 9 or FIG. 10, the first discharge sustaining electrode 12A and the second discharge
2B means bus electrodes 13A, 13B facing each other.
And extends in parallel with the second direction. The outer shape of one pixel is substantially square, and one pixel is divided into three sections (cells) by partitions, and three primary colors (R,
G, and one color out of B) emits light, when the external dimensions of one pixel was set to L _0, the dimension of each compartment _{(L 0/3) × (} L 0)
Slightly smaller than Therefore, in the pair of discharge sustaining electrodes 12A and 12B, the length of the portion of the discharge sustaining electrodes 12A and 12B that contributes to the glow discharge is (L ₀ ).
It is a value close to. That is, as compared with the plasma display device shown in FIGS. 1 to 7, the length of the portion contributing to the glow discharge can be made about three times, so that the discharge region can be enlarged. Therefore, it is possible to further improve the brightness of the plasma display device. In addition, with such a configuration, the area of the discharge sustaining electrode can be reduced, so that the electrode capacity can be reduced and power consumption can be reduced.

The dielectric layers described in the first to third embodiments can be applied to the examples shown in FIGS. Further, the configuration of the common bus electrode described in the third embodiment can be applied to the examples shown in FIGS. The discharge sustaining electrode shown in FIG.
FIG. 12 schematically shows an arrangement relationship between the sustain electrodes 12A and 12B, the common bus electrode 13, and the partition 25 when combined with the common bus electrode 13 described in the third embodiment. Further, the discharge sustaining electrode shown in FIG.
When combined with the common bus electrode 13 described in
FIG. 13 and FIG. 14 schematically show the arrangement of the discharge sustaining electrodes 12A and 12B, the common bus electrode 13, and the partition 25.

Alternatively, in the example shown in FIGS. 8 to 14, the second dielectric layer 14B is placed above the region of the first panel 10 corresponding to the partition wall 25 provided on the second panel 20. May also be formed. That is, the second dielectric layer 14B
Can be made into a lattice shape (cross-girder shape). In this case, specifically, a region of the first panel 10 corresponding to the partition wall 25 provided on the second panel 20 has a first electrode (more specifically, a bus electrode 13A, 13B or a common electrode). The bus electrode 13), the second dielectric layer 14B, and the first dielectric layer 14A are formed in this order, or alternatively, the first electrode (more specifically, the bus electrodes 13A and 13B and the common bus electrode 13). ), First dielectric layer 14A, second dielectric layer 1
4B are formed in this order. With such a structure, it is possible to reliably prevent the occurrence of so-called optical crosstalk in which the glow discharge affects adjacent discharge cells.

[0084]

According to the present invention, the first portion of the dielectric layer covering the first bus electrode and the second bus electrode is the first portion.
Of the dielectric layer and the second dielectric layer, for example,
It is possible to reliably prevent abnormal discharge from occurring between the edge of the top surface of the bus electrode and the second electrode. In addition, since the thickness of the first dielectric layer covering the first and second discharge sustaining electrodes can be reduced, the distance (discharge gap) between the paired discharge sustaining electrodes can be reduced. As a result, it is possible to achieve higher pixel density and lower voltage driving. Further, since the light transmittance is increased, the luminous efficiency is improved, and a bright screen can be realized.

Further, in the present invention, the first portion of the dielectric layer covering the first bus electrode and the second bus electrode comprises the first dielectric layer and the second dielectric layer. Therefore,
It is possible to suppress the discharge area from spreading to adjacent discharge cells along the second direction, thereby preventing occurrence of optical crosstalk between adjacent discharge cells along the second direction and deterioration of luminance distribution between pixels. Can be performed, a stable operation can be obtained, and image quality can be improved.
In addition, since the first bus electrode and the second bus electrode are covered by the relatively thick second dielectric layer, the capacitance of the electrodes is reduced, and power consumption can be reduced.

Further, a first bus electrode constituting a first electrode and a second bus electrode constituting a first electrode adjacent to the first electrode are provided on a first substrate. By forming the first dielectric layer and the second dielectric layer, it is possible to reliably prevent abnormal discharge from occurring between these bus electrodes.

Further, the first discharge sustaining electrode extends from the first bus electrode toward the second bus electrode and shortly before the second bus electrode, and the second discharge sustaining electrode is Second
The first discharge sustaining electrode extends from the first bus electrode to the first bus electrode and before the first bus electrode so as to face the first discharge sustain electrode and face the second discharge sustain electrode. An electrode portion and a second electrode facing the first discharge sustaining electrode.
If a configuration in which glow discharge is generated between the discharge sustaining electrode portion and the discharge sustaining electrode portion, the length of the discharge maintaining electrode portion contributing to the glow discharge can be made sufficiently long, so that the discharge region can be enlarged. In spite of the simple configuration, the brightness of the plasma display device can be improved.

[Brief description of the drawings]

FIG. 1 is a diagram schematically showing an arrangement relationship among a sustain electrode, a bus electrode, and a partition in a plasma display device according to a first embodiment of the present invention.

FIG. 2 is a schematic exploded perspective view of a part of the AC-driven plasma display device according to the first embodiment of the present invention.

FIG. 3 is a schematic partial end view of the first panel when cut in the same manner as along the arrow BB in FIG. 1 in the plasma display device according to the first embodiment of the invention and its modification. .

FIG. 4 is a schematic partial end view of the first panel when cut in the same manner as along the arrow BB in FIG. 1 in the plasma display device according to the second embodiment of the invention and its modification. .

FIG. 5 is a diagram schematically showing an arrangement relationship between a sustain electrode, a bus electrode, and a partition in a plasma display device according to a third embodiment of the present invention.

FIG. 6 is a schematic exploded perspective view of a part of an AC-driven plasma display device according to Embodiment 3 of the present invention.

FIG. 7 is a schematic partial end view of a first panel in a plasma display device according to Embodiment 3 of the present invention.

FIG. 8 is a view schematically showing a modification of the arrangement of the sustain electrodes, the bus electrodes, and the partitions in the plasma display device of the present invention.

FIG. 9 is a diagram schematically showing another modified example of the arrangement relationship between the sustain electrodes, the bus electrodes, and the partitions in the plasma display device of the present invention.

FIG. 10 is a view schematically showing still another modified example of the arrangement of the sustain electrodes, the bus electrodes, and the partitions in the plasma display device of the present invention.

11 is a schematic exploded perspective view of a part of the AC-driven plasma display device having the arrangement shown in FIG. 9;

FIG. 12 is a diagram schematically showing an arrangement relationship between a discharge sustaining electrode, a bus electrode, and a partition wall when the discharge sustaining electrode shown in FIG. 8 is combined with the bus electrode described in the third embodiment of the present invention; is there.

FIG. 13 is a diagram schematically showing an arrangement relationship between a discharge sustaining electrode, a bus electrode, and a partition when the discharge sustaining electrode shown in FIG. 9 is combined with the bus electrode described in the third embodiment of the present invention; is there.

FIG. 14 schematically shows a modification of the arrangement relationship between the discharge sustaining electrodes, the bus electrodes, and the partition walls when the discharge sustaining electrodes shown in FIG. 9 are combined with the bus electrodes described in the third embodiment of the present invention. FIG.

FIG. 15 is a diagram schematically showing a light emitting state of a glow discharge in a discharge cell.

FIG. 16 is a diagram schematically showing a light emitting state of a glow discharge in a discharge cell.

FIG. 17 is a schematic partial end view of the first panel when cut in a conventional plasma display device in the same manner as along the arrow BB in FIG. 1;

[Explanation of symbols]

10 first panel (front panel), 11
1st substrate, 12A, 12B ... discharge sustaining electrode, 1
3A, 13B: bus electrode, 13: common bus electrode, 14A: first dielectric layer, 14B: second dielectric layer, 15: protective layer, 20 ... 2nd panel (rear panel), 21 ... 2nd substrate, 22 ... 2nd electrode (address electrode), 23 ... dielectric film, 2
4, 24R, 24G, 24B ... phosphor layer, 25 ...
・ Partition

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hiroshi Mori 6-7-35 Kita-Shinagawa, Shinagawa-ku, Tokyo Inside Sony Corporation (72) Eitaro Yoshikawa 6-35-35 Kita-Shinagawa, Shinagawa-ku, Tokyo Inside Sony Corporation (72) Inventor Tomohiro Kimura 6-35 Kita Shinagawa, Shinagawa-ku, Tokyo Sony Corporation F-term (reference) 5C027 AA01 AA05 5C040 FA01 GC05 GD02 JA07 JA12 MA03 MA12 MA20

Claims (25)

[Claims] (A) a first substrate, a first electrode group including a plurality of first electrodes provided on the first substrate,
A first panel covering a first electrode and including a dielectric layer composed of a first dielectric layer and a second dielectric layer; and (b) a second substrate; A second electrode group composed of a plurality of second electrodes extending at a predetermined angle with respect to the direction in which the second electrodes extend, a partition provided between adjacent second electrodes, An AC-driven plasma display device having a second panel comprising a phosphor layer provided above, wherein each of the first electrodes comprises: (A) a first bus electrode; and (B) a first bus electrode. (C) a second bus electrode extending in parallel with the first bus electrode, and (D) a first discharge sustain electrode in contact with the second bus electrode. And a second discharge sustaining electrode facing the plasma display, wherein a discharge occurs between the first discharge sustaining electrode and the second discharge sustaining electrode. A first portion of the dielectric layer covering the first bus electrode and the second bus electrode, the first portion comprising a first dielectric layer and a second dielectric layer; A plasma display device, wherein a second portion of the dielectric layer covering the electrode and the second sustaining electrode is formed of the first dielectric layer. 2. The plasma display device according to claim 1, wherein the thickness of the second portion of the dielectric layer covering the first and second sustain electrodes is 10 μm or less. 3. A first bus electrode constituting a first electrode,
A first dielectric layer and a second dielectric layer are formed on a first substrate between the first electrode and a second bus electrode constituting a first electrode adjacent to the first electrode. The plasma display device according to claim 1, wherein: 4. The device according to claim 1, wherein the second dielectric layer is also formed above a region of the first panel corresponding to a partition provided on the second panel. Plasma display device. 5. The plasma display device according to claim 1, wherein a material forming the first dielectric layer is different from a material forming the second dielectric layer. 6. The plasma display device according to claim 5, wherein the thickness of the second portion of the dielectric layer covering the first and second sustain electrodes is 10 μm or less. 7. The material for forming the first dielectric layer is silicon oxide, and the material for forming the second dielectric layer is a fired body of glass paste. 7. The plasma display device according to 6. 8. The semiconductor device according to claim 1, wherein the first sustain electrode extends in parallel with the first bus electrode, and the second sustain electrode extends in parallel with the second bus electrode. The plasma display device according to claim 2. 9. The method according to claim 1, wherein the first sustaining electrode and the second sustaining electrode are formed between a pair of partition walls. Item 6. The plasma display device according to Item 1. 10. A first sustain electrode extends from a first bus electrode toward a second bus electrode, and a second discharge sustain electrode extends from the second bus electrode toward the first bus electrode. 10. The plasma display device according to claim 9, wherein a discharge is generated between the tip of the first sustaining electrode and the tip of the second sustaining electrode. 11. A first sustaining electrode extends from a first bus electrode toward a second bus electrode and short of the second bus electrode. From the second bus electrode to the first bus electrode and before the first bus electrode.
A portion of the first sustaining electrode extending opposite to the first sustaining electrode and facing the second sustaining electrode, and a portion of the second sustaining electrode facing the first sustaining electrode; The plasma display device according to claim 9, wherein a discharge occurs in the plasma display device. 12. A first bus electrode forming a first electrode, and a second bus electrode forming a first electrode adjacent to the first electrode.
2. The plasma display device according to claim 1, wherein a common bus electrode is used. 13. The plasma display device according to claim 12, wherein the thickness of the second portion of the dielectric layer covering the first and second sustain electrodes is 10 μm or less. 14. The device according to claim 12, wherein the second dielectric layer is also formed above a region of the first panel corresponding to a partition provided in the second panel. Plasma display device. 15. A material for forming the first dielectric layer is a second dielectric layer.
13. The plasma display device according to claim 12, wherein said material is different from a material constituting said dielectric layer. 16. The plasma display device according to claim 15, wherein the thickness of the second portion of the dielectric layer covering the first and second sustain electrodes is 10 μm or less. 17. The method according to claim 15, wherein the material forming the first dielectric layer is silicon oxide, and the material forming the second dielectric layer is a fired body of a glass paste. 17. The plasma display device according to item 16. 18. The device according to claim 12, wherein the first sustain electrode extends in parallel with the first bus electrode, and the second sustain electrode extends in parallel with the second bus electrode. Item 1
The plasma display device according to any one of claims 3 to 15. 19. The method according to claim 12, wherein the first sustaining electrode and the second sustaining electrode are formed between a pair of partition walls. Item 6. The plasma display device according to Item 1. 20. A first sustain electrode extends from a first bus electrode toward a second bus electrode, and a second sustain electrode extends from the second bus electrode toward the first bus electrode. 20. A discharge is generated between the tip of the first sustaining electrode and the tip of the second sustaining electrode.
3. The plasma display device according to 1. 21. A first discharge sustaining electrode extends from the first bus electrode toward the second bus electrode and shortly before the second bus electrode. From the second bus electrode to the first bus electrode and before the first bus electrode.
A portion of the first sustaining electrode extending opposite to the first sustaining electrode and facing the second sustaining electrode, and a portion of the second sustaining electrode facing the first sustaining electrode; 20. The plasma display device according to claim 19, wherein a discharge is generated in the plasma display device. 22. (a) a first substrate, a first electrode group composed of a plurality of first electrodes provided on the first substrate, and a first electrode, A first panel formed of a dielectric layer composed of a dielectric layer and a second dielectric layer; and (b) forming a predetermined angle with a second substrate and a direction in which the first electrode extends. A second electrode group composed of a plurality of second electrodes extending in a row, a partition provided between adjacent second electrodes, and a phosphor layer provided above the second electrodes. A second panel, wherein each of the first electrodes comprises: (A) a first bus electrode; (B) a first sustain electrode in contact with the first bus electrode; and (C) a first discharge electrode. A second bus electrode extending in parallel with the bus electrode; and (D) a second discharge sustain electrode in contact with the second bus electrode and facing the first discharge sustain electrode. A method for manufacturing an AC-driven plasma display device in which a discharge is generated between a sustaining electrode and a second discharge sustaining electrode, comprising: (a) forming a first electrode group on a first substrate; (B) forming a second dielectric layer on the portion of the first dielectric layer on the first bus electrode and the second bus electrode after covering the first electrode with the first dielectric layer; Or a step of covering the first bus electrode and the second bus electrode with the second dielectric layer, and then covering the first electrode with the first dielectric layer. A method for manufacturing a display device. 23. In the step (b), a second dielectric layer is formed also above a region of the first panel corresponding to a partition provided on the second panel. 23. The method for manufacturing a plasma display device according to item 22. 24. A material forming the first dielectric layer is a second dielectric layer.
23. The method according to claim 22, wherein the material is different from the material constituting the dielectric layer. 25. A material constituting the first dielectric layer is silicon oxide, the first dielectric layer is formed by a chemical vapor deposition method, and the material constituting the second dielectric layer is The method according to claim 24, wherein the second dielectric layer is formed by a screen printing method, wherein the second dielectric layer is a fired body of a glass paste.