JP2001307643A - Display panel and flat display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display panel capable of surely avoiding generation of such phenomena as a difficult display of an image at the proximity of an exhaust tube. SOLUTION: A display panel is equipped with a substrate 11, a barrier wall 14 formed on the substrate 11 and a dummy barrier wall 41. An effective region 31 for a display and an ineffective region 32 that is located at a peripheral portion of the effective region 31 and surrounds the effective region 31, are comprised. For a part of the substrate 11 corresponding to the effective region 31, plural numbers of the barrier walls 14 of a stripe shape are formed, and the dummy barrier walls 41 are formed on the part of the substrate 11 positioned between the connecting portion 32A of the ineffective region 32 connecting with an interior space of a flat display device in assembling the flat display device and the effective region 31.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a display panel and a flat display device.

[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. Also, a cold cathode field emission display (FED: Field Emission Display) capable of emitting electrons from a solid into a vacuum without using thermal excitation has been proposed. From the viewpoint of attention.

In a plasma display device, a voltage is applied to a discharge cell filled with a discharge gas composed of a rare gas to excite a phosphor layer in the discharge cell with ultraviolet rays generated based on a glow discharge in the discharge gas. This is a display device that emits light by light emission. That is, the individual discharge cells are driven by a principle similar to that of a fluorescent lamp, and the discharge cells are usually assembled in the order of several hundred thousand 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.

FIGS. 11 and 12 show a typical configuration example of a conventional AC plasma display device. This AC type plasma display device belongs to a so-called three-electrode type, and discharge occurs between a pair of discharge sustaining electrodes 22. The AC-type plasma display device shown in FIG. 11 is formed by bonding a first panel 10 corresponding to a rear panel and a second panel 20 corresponding to a front panel. Light emission of the phosphor layer 15 on the first panel 10
For example, it is observed through the second panel 20. FIG.
2A is a schematic plan view conceptually showing the first panel 10, and FIG. 12B is a schematic cross-sectional view conceptually showing the first panel 10.

The first panel 10 includes a first substrate 11, address electrodes (also called data electrodes) 12 provided in stripes on the first substrate 11, and an address electrode 1.
Dielectric film 13 formed on the first substrate 11 including on the second substrate 11
And the adjacent address electrodes 12 on the dielectric film 13
In this region, an insulating partition wall 14 extending in parallel with the address electrode 12 and a phosphor layer 15 provided over the dielectric film 13 and on the side wall surface of the partition wall 14 are formed.
The phosphor layer 15 includes a red phosphor layer 15R, a green phosphor layer 1
5G and a blue phosphor layer 15B, and the phosphor layers 15R, 15G, and 15B of these colors are provided in a predetermined order.

On the other hand, the second panel 20 includes a transparent second substrate 21, a discharge sustaining electrode 22 provided in a stripe shape on the second substrate 21 and made of a transparent conductive material, and an impedance of the discharge sustaining electrode 22. , A bus electrode 23 made of a material having a lower electrical resistivity than the discharge sustaining electrode 22, and a bus electrode 23 and the discharge sustaining electrode 2
2 and a protective layer 24 made of a dielectric material.

The direction in which the projected image of the discharge sustaining electrode 22 extends and the direction in which the projected image of the address electrode 12 extends are orthogonal to each other, and include a pair of discharge sustaining electrodes 22 and phosphor layers 15R, 15G, which emit light of three primary colors. A region where one set of 15B overlaps corresponds to one pixel (one pixel). FIG. 11 is a partially exploded perspective view. In fact, the top of the partition 14 on the first panel 10 side is in contact with the protective layer 24 on the second panel 20 side. An overlapping area where the pair of discharge sustaining electrodes 22 and the address electrode 12 located between the two barrier ribs 14 correspond to a discharge cell. Then, the adjacent partition wall 14 and phosphor layer 15
A discharge gas is sealed in a space surrounded by the protective layer 24 and the protective layer 24. Such discharge cells are arranged in a two-dimensional matrix in an effective area (meaning an area functioning as an actual display screen, and the same applies hereinafter), for example, in the order of hundreds of thousands to millions. Are arranged.

[0010] As shown in FIG.
Of the invalid area 32 (the effective area 3
1 is a region that is arranged so as to surround the area 1 and does not function as a display screen, and the same applies to the following.). The through-hole 16 is formed of, for example, a glass tube, and is also referred to as a chip tube.
It communicates with 7. The exhaust pipe 17 is attached to the outside of the first substrate 11 using, for example, frit glass (not shown), and is sealed. It should be noted that FIG.
In FIG. 12, components other than the first substrate 11, the partition 14, and the through-hole 16 that constitute the first panel 10 are omitted, and in FIG. 12B, the first substrate that constitutes the first panel 10 is omitted. The illustration of the components other than 11, the through hole 16, and the exhaust pipe 17 is omitted. FIG. 12B shows the exhaust pipe 17 before sealing.

In assembling a plasma display device,
For example, a seal layer (not shown) is formed on the periphery of the first panel 10 by screen printing. Next, the first panel 10 and the second panel 20 are bonded and fired to cure the seal layer. After exhausting the internal space formed between the first panel 10 and the second panel 20 through the through-hole 16 and the exhaust pipe 17, a Ne-Xe mixed gas (for example, Ne50% -Xe50% mixed) is exhausted. Gas) is introduced at a pressure of, for example, 8 × 10 ⁴ Pa (0.8 atm). Thereafter, the exhaust pipe 17 is heat-sealed to seal the internal space, thereby completing the plasma display device.

Since a glow discharge occurs between a pair of sustain electrodes 22, this type of plasma display device is called a "surface discharge type". For example, a pair of discharge sustaining electrodes 22
Immediately before the voltage is applied, a pulse voltage lower than the discharge start voltage of the discharge cell is applied to the address electrode 12, so that wall charges are accumulated in the discharge cell (selection of a discharge cell for display), and the apparent value is displayed. The upper firing voltage drops. Next, the discharge started between the pair of discharge sustaining electrodes 22 is:
It can be maintained at a voltage lower than the discharge starting voltage. In the discharge cell, the phosphor layer 15 excited by the irradiation of the vacuum ultraviolet ray generated based on the glow discharge in the discharge gas is used.
However, it exhibits a specific emission color according to the type of the phosphor material.
In addition, vacuum ultraviolet rays having a wavelength corresponding to the type of the sealed discharge gas are generated.

[0011]

When a plasma display device having such a structure is manufactured, discharge is often difficult to occur in discharge cells located near the exhaust pipe 17, and in some cases, no discharge occurs. Such a phenomenon was recognized. Although the cause of such a phenomenon has not been clarified yet, when the internal space formed between the first panel 10 and the second panel 20 is exhausted through the through hole 16 and the exhaust pipe 17, It is presumed that one cause is that the contamination of the first panel 10 or the second panel 20 by the gas occurs when the discharge gas is introduced into the internal space. Also, when heat sealing the exhaust pipe 17, the exhaust pipe 1
It is presumed that the gas adsorbed on the inner wall of No. 7 is released, flows into the internal space, and the first panel 10 and the second panel 20 are contaminated by the gas.

One of the methods for forming the partition walls 14 is a sand blast forming method. In this forming method, for example, a low-melting glass paste layer 60 is formed on the dielectric film 13 by a screen printing method, dried, and then a photosensitive so-called dry film (photosensitive film) is laminated on the entire surface ( Laminate). Then, by exposing and developing the dry film, a portion of the low melting point glass paste layer 60 where the partition wall 14 is to be formed is covered with the mask layer 61 (see FIG. 13A). Next, the exposed portion of the low-melting glass paste layer 60 is subjected to a well-known sand blast method (spray processing method).
(See FIG. 13B), the mask layer 61 is removed. Thereafter, by firing the remaining low-melting glass paste layer 60, a plurality of stripe-shaped partition walls 14 extending in parallel can be formed. Since the sand blast method (injection processing method) is performed before firing the low-melting glass paste layer 60, the shape of the partition wall can be easily obtained.

In such a sand blasting method, when the low melting point glass paste layer 60 is removed, the processing rate of the portion corresponding to the longitudinal end of the partition 14 is higher than that of the other portions. The portion of the mask layer 61 corresponding to the end in the longitudinal direction is the low melting point glass paste layer 60.
Easy to peel off. When the processing by the sandblasting method is performed in a state where the mask layer 61 is separated in this manner, a portion of the low melting point glass paste layer 60 which should be originally left is removed, and a kind of damage occurs to a finally obtained partition wall. As a result, there arises a problem that the partition 14 having a desired shape cannot be formed. Also, the partition walls 14 arranged in parallel
Of these, the outermost partition wall 14 is likely to be damaged.

Accordingly, a first object of the present invention is to provide a display panel capable of reliably avoiding a phenomenon that an image is difficult to be displayed in a portion near an exhaust pipe, and a display panel for such a display panel. An object of the present invention is to provide a flat display device incorporating the same.

A second object of the present invention is to provide a display panel having a structure in which a partition is hardly damaged when forming a partition based on a sandblasting method, and a flat panel incorporating the display panel. It is to provide a type display device.

[0016]

According to a first aspect of the present invention, there is provided a display panel for achieving the first object.
A substrate, comprising a partition and a dummy partition formed on the substrate, an effective area for performing display, and an invalid area disposed around the effective area and surrounding the effective area,
A plurality of stripe-shaped partition walls are formed on a portion of the substrate corresponding to the effective area, a display panel for configuring a flat display device, and the flat display device is assembled when the flat display device is assembled. A dummy partition is formed at a portion of the substrate located between the communication area of the invalid area communicating with the internal space and the effective area.

According to a first aspect of the present invention, there is provided a flat-panel display according to a first aspect of the present invention, comprising: (1) a first substrate; a partition formed on the first substrate; A first panel having a dummy partition wall; and (2) a second panel having a second substrate, an effective area for performing display, and an effective area disposed on an outer peripheral portion of the effective area. A plurality of stripe-shaped partitions are formed in an area of the first substrate that has an ineffective area surrounding the area and corresponds to the effective area, and an outer edge of the first substrate and an outer edge of the second substrate are formed. Is bonded to a first substrate portion located between a communication portion of an invalid region and an effective region that communicates with an internal space of the flat display device when the flat display device is assembled. Is characterized in that a dummy partition is formed.
Each of the display panels according to the first to fourth aspects of the present invention corresponds to the first panel in the flat display device according to the first to fourth aspects of the present invention.

In the display panel or the flat display device according to the first aspect of the present invention, the length of the dummy partition wall is 1 cm or more, or 1 / one of the length of one side of the effective area.
It is preferred to be 4 or more. Alternatively, it is preferable that the length of the dummy partition is 20% or more, preferably 50% or more of the entire length of the outer peripheral portion of the effective area. The effective area is
When two opposing sides have a rectangular shape extending in the first direction and the other two opposing sides have a rectangular shape extending in the second direction, the communicating portion of the invalid area is located outside one side of the rectangular shape. Or it may be located outside the corner. When the communicating portion of the invalid area is located outside one side of the rectangular shape, the dummy partition wall is linear or spans a corner portion and has an “L” shape. On the other hand, when the communication portion of the invalid area is located outside the corner portion, the dummy partition has an “L” shape. It is desirable that the communicating portion of the invalid area be located near the center (the bisecting point in the length direction) of the dummy partition wall. The number of dummy partition walls may be one or two or more.

Incidentally, assuming so-called Gaussian coordinates (XY coordinates), the X-axis corresponds to one side of the rectangular shape, the Y-axis corresponds to the other side of the rectangular shape, and the effective area having the rectangular shape corresponds to the third area. Assuming that it is located in the K quadrant, the outside of the corner is located in the (K + 2) th quadrant. The same applies to the following description. In addition, the communicating portion of the invalid area that communicates with the internal space of the flat display device at the time of assembling the flat display device is, specifically, a display panel or a first panel provided with a through hole communicating outside the system. And / or part of the second panel. Preferably, the through hole communicates with an exhaust pipe attached to the first panel and / or the second panel. The number of communicating portions is not limited to one, and a plurality of communicating portions may be provided. The same applies to the following description.

In the display panel or the flat display device according to the first aspect of the present invention, the portion of the (first) substrate located between the communicating portion of the invalid region and the valid region, preferably In the (first) portion of the substrate corresponding to the region,
Since the dummy partition walls are formed, the flow of gas in the internal space of the flat display device can be regulated when the flat display device is assembled. As a result, the display panel or the first panel and the second panel are contaminated. Less likely to occur.

A display panel according to a second aspect of the present invention for achieving the first object includes a substrate, and partitions and dummy partitions formed on the substrate. Of the effective area, and is arranged on the outer periphery of the effective area,
An effective area surrounding the effective area, the effective area having a rectangular shape with two opposing sides extending in the first direction and the other two opposing sides extending in the second direction, and corresponding to the effective area; A display panel for forming a flat display device, wherein a plurality of the stripe-shaped partitions are formed on a portion of the substrate to be formed, and the display panel communicates with an internal space of the flat display device when the flat display device is assembled. A communication part of the invalid area is located outside the corner portion of the rectangular shape, and a portion of the substrate located between the communication part and the effective area of the invalid area has a first portion extending in the first direction. A dummy partition wall and a dummy partition wall extending in the second direction and formed of a second dummy partition wall continuous with the first dummy partition wall are formed.

According to a second aspect of the present invention, there is provided a flat-panel display according to a second aspect of the present invention, comprising: (1) a first substrate; a partition formed on the first substrate; A first panel provided with a dummy partition wall, and (2) a second panel provided with a second substrate, an effective area for performing display, and an effective area disposed on an outer peripheral portion of the effective area. An effective area surrounding the area, the effective area having a rectangular shape in which two opposing sides extend in a first direction and the other two opposing sides extend in a second direction, and correspond to an effective area; In the region of the first substrate, the plurality of stripe-shaped partitions are formed,
A flat display device having an outer edge portion of a first substrate and an outer edge portion of a second substrate joined to each other, wherein a communicating portion of an invalid area that communicates with an internal space of the flat display device when the flat display device is assembled. A first dummy partition wall extending in a first direction is provided on a portion of the first substrate located outside the corner portion of the rectangular shape and located between the communicating portion and the effective region in the invalid region; as well as,
A second extending in the second direction and continuous with the first dummy partition;
Is characterized in that a dummy partition composed of the above-mentioned dummy partition is formed.

In the display panel or the flat panel display according to the second aspect of the present invention, the first dummy partition and the second dummy partition have an overall "L" shape in plan view.
The length of the side of the rectangular shape extending in the first direction is L ₁ , and the length of the side of the rectangular shape extending in the second direction is L ₂ (however,
When the L ₁ ≦ L _2), the length and the length of the second dummy barrier ribs of the first dummy barrier ribs, respectively, it is preferable that the L _1/4 or more. Alternatively, it is preferable that each of the length of the first dummy partition and the length of the second dummy partition be 1 cm or more. The number of dummy partition walls may be one or two or more.

In the display panel or the flat-panel display according to the second aspect of the present invention, the portion of the (first) substrate located between the communicating portion of the invalid region and the valid region, preferably In the (first) portion of the substrate corresponding to the region,
Since the first dummy partition and the second dummy partition are formed, the flow of gas in the internal space of the flat display device can be regulated at the time of assembling the flat display device. Contamination hardly occurs on the first panel and the second panel.

In the display panel or the flat display device according to the first or second embodiment of the present invention,
When the width of the partition is d and the width of the dummy partition or the first and second dummy partitions is d _D , it is preferable that d ≦ d _D ≦ 2d. Compared to the width d of the partition wall, when the width d _D of the dummy barrier ribs or the first and second dummy barrier rib is too wide, the partition wall, these heat shrinkage at the time of forming the dummy barrier ribs or the first and second dummy barrier ribs As a result, there is a difference between the height of the finally formed partition wall and the height of the dummy partition wall or the first and second dummy partition walls, or there is a large difference between the dummy partition wall and the first and second dummy partition walls. Stress may remain. Note that the width of the partition, the width of the dummy partition or the width of the first and second dummy partitions is the width of a portion in contact with the (first) substrate. The same applies to the following. Also,
The “width” is a direction perpendicular to the direction in which the partition, the dummy partition, or the first and second dummy partitions extend, and
It means the length of the partition wall, the dummy partition wall, or the first and second dummy partition walls along the direction perpendicular to the height direction. The same applies to the following.

A display panel according to a third aspect of the present invention for achieving the first and second objects includes a substrate,
A partition formed on the substrate, a first protection partition and a second protection partition, and an effective area for performing display; and
A rectangle disposed at an outer peripheral portion of the effective region and surrounding the effective region, the effective region having two opposing sides extending in the first direction and the other two opposing sides extending in the second direction; It has a shape, a plurality of stripe-shaped partition walls are formed in a portion of the substrate corresponding to the effective area, a display panel for configuring a flat display device, the substrate of the invalid area A first protective partition extending in a first direction and a second protective partition extending in a second direction are formed in the portion so as to surround the rectangular effective area. A communicating portion of an invalid area that communicates with the internal space of the flat display device at the time of assembly is located outside the rectangular corner portion, and a portion of the substrate located between the communicating portion and the effective area of the invalid area. Means that the first protective partition and the second protective partition are continuously formed A gap is opened between a first protection partition and a second protection partition formed in a portion of the substrate located outside the rectangular corner where no communication portion of the invalid area exists. It is characterized by being.

The flat display device according to the third aspect of the present invention for achieving the above first and second objects has the following features.
A first substrate; a partition formed on the first substrate;
A first panel having a protective partition wall and a second protective partition wall,
And (2) a second panel provided with a second substrate, comprising: an effective area for performing display; and an ineffective area disposed around the effective area and surrounding the effective area. The effective area has two opposing sides extending in the first direction,
The other two opposite sides have a rectangular shape extending in the second direction, and a plurality of stripe-shaped partitions are formed in a region of the first substrate corresponding to an effective region, and an outer edge of the first substrate is formed. A flat panel display device in which a portion and an outer edge portion of a second substrate are joined to each other, and a portion of the first substrate corresponding to an invalid region is provided in a first direction so as to surround a rectangular effective region. And a second protection partition extending in the second direction are formed, and a communicating portion of an invalid area that communicates with the internal space of the flat display at the time of assembling the flat display is formed. A first protection partition and a second protection partition are provided on a portion of the first substrate which is located outside the corner of the rectangular shape and is located between the communicating portion and the effective region of the invalid region. Outside of the rectangular corner portion, which is formed continuously and has no communication portion of the invalid area. Wherein the gap is open between the first first protective diaphragm and a second protective barrier ribs formed on a portion of the substrate positioned.

In the display panel or the flat panel display according to the third aspect of the present invention, the (first) portion of the substrate located between the communicating portion of the invalid region and the valid region, preferably In the (first) portion of the substrate corresponding to the region,
Since the first protective partition and the second protective partition are formed continuously, it is possible to regulate the flow of gas in the internal space of the flat display device when assembling the flat display device. Contamination hardly occurs in the panel for use or the first panel and the second panel.

In addition, since the first protective partition and the second protective partition are formed in the (first) portion of the substrate corresponding to the ineffective area, the partition is formed by the sandblast method. Are also protected by these protective partitions, and the partitions are less likely to be damaged.

In the display panel or the flat-panel display according to the third aspect of the present invention, the number of the first protective partition extending in parallel with each of the two sides of the rectangular shape extending in the first direction is: Preferably, the number is 2 or more, more preferably 3 to 5, and the number of the second protective partitions extending in parallel with each of the two sides of the rectangular shape extending in the second direction is preferably 2 or more, more preferably 3 or more. It is preferably from 5 to 5. By defining the number of the first and second protective barriers in this manner, when the barriers are formed based on the sandblasting method, even if the first protective barrier and the second protective barrier are partially damaged. In addition, it is possible to reliably prevent the partition walls from being damaged.

A display panel according to a fourth aspect of the present invention for achieving the first and second objects includes a substrate,
A partition formed on the substrate, a first protection partition and a second protection partition, and an effective area for performing display; and
A rectangle disposed at an outer peripheral portion of the effective region and surrounding the effective region, the effective region having two opposing sides extending in the first direction and the other two opposing sides extending in the second direction; It has a shape, a plurality of stripe-shaped partition walls are formed in a portion of the substrate corresponding to the effective area, a display panel for configuring a flat display device, the substrate of the invalid area M portions of the first protective partition extending in the first direction so as to surround the rectangular effective area, and
N (where N = M-1 or M) second protective barrier ribs extending in the second direction are formed, and the n-th (where 1 ≦ n ≦ M−) counting from the effective area side. There is a gap between the end of the first protection partition of 1) and the n-th second protection partition, and the n-th second protection partition is on an extension of the n-th first protection partition. Of the n-th second partition wall
There is a gap between the end of the (1) th protective partition and the (n + 1) th first protective partition, and the (n + 1) th protective partition extends on the extension of the nth second protective partition. The first protection partition is present.

The flat display device according to the fourth aspect of the present invention for achieving the above first and second objects has the following features.
A first substrate; a partition formed on the first substrate;
A first panel having a protective partition wall and a second protective partition wall,
And (2) a second panel provided with a second substrate, comprising: an effective area for performing display; and an ineffective area disposed around the effective area and surrounding the effective area. The effective area has two opposing sides extending in the first direction,
The other two opposite sides have a rectangular shape extending in the second direction, and a plurality of stripe-shaped partitions are formed in a region of the first substrate corresponding to an effective region, and an outer edge of the first substrate is formed. A flat panel display device in which a portion and an outer edge of a second substrate are joined, wherein the first substrate corresponding to the invalid region extends in the first direction so as to surround the rectangular effective region. M first protective barriers and N (where N = M-1 or M) second protective barriers extending in the second direction are formed, and the second protective barriers are counted from the effective area side. n-th (1 ≦ n
≦ M−1), there is a gap between the end of the first protective partition and the n-th second protective partition, and an extension of the n-th first protective partition. An n-th second protective partition is present, and the end of the n-th second protective partition and the (n +
1) There is a gap between the first and second protection barriers, and the (n +)
1) The present invention is characterized in that a first first protective partition wall exists.

In the display panel or the flat-panel display according to the fourth aspect of the present invention, when the flat-panel display is assembled, the communicating portion of the invalid area which communicates with the internal space of the flat-panel display has a rectangular shape. It may be located outside the side or outside the corner.

In the display panel or the flat panel display according to the fourth aspect of the present invention, a kind of maze is constituted by the end of the first protective partition and the end of the second protective partition. . As a result, the flow of gas in the internal space of the flat display device can be restricted during the assembly of the flat display device, so that the display panel or the first and second panels are less likely to be contaminated.

In addition, since the first protective partition and the second protective partition are formed in the portion of the (first) substrate corresponding to the invalid area, the partition is formed by the sandblast method. Are also protected by these protective partitions, and the partitions are less likely to be damaged.

In the display panel or the flat display device according to the fourth aspect of the present invention, the value of M is preferably 3 or more and 5 or less. By setting the value of M to 3 or more, when the partition is formed based on the sandblast method, even if a part of the first protective partition and the second protective partition is damaged, the partition is damaged. This can be reliably prevented. Even if the value of M is set to 5 or less, it is possible to reliably prevent the partition from being damaged.

In the display panel or the flat display device according to the third or fourth embodiment of the present invention,
When the width of the partition is d, the width of the first protective partition is d ₁ , and the width of the second protective partition is d ₂ , d ≦ d ₁ ≦ 2d and d ≦ d ₂
It is desirable to satisfy ≦ 2d. Compared to the width d of the partition wall, the width d ₁ of the first protective barrier rib and the width d ₂ of the second protective diaphragm is too wide, these heat during formation of the partition wall and the first and second protective diaphragm As a result of the difference in shrinkage, the difference between the height of the finally formed partition and the height of the first protective partition or the second protective partition may occur, or the first or second protective partition may have a different height. A large stress may remain.

In the display panel or the flat display device of the present invention, the third mode and the fourth mode can be combined. That is, the first protection partition and the second protection partition are continuously formed on the (first) portion of the substrate located between the communication part of the invalid area and the effective area, and the communication part of the invalid area is formed. The above-mentioned kind of maze is constituted by the end of the first protective partition and the end of the second protective partition on the (first) substrate portion located outside the non-existing rectangular corner. You can also.

The display panel according to the first to fourth aspects of the present invention may be, for example, a direct current (DC) or alternating current (AC) plasma display device (PDP),
The present invention can be applied to a cold cathode field emission display (FED) and a plasma address liquid crystal display (PALC). Further, as the flat display device according to the first embodiment to the fourth embodiment of the present invention, for example, a plasma display device (PD) of a DC drive type (DC type) or an AC drive type (AC type)
P), a cold cathode field emission display (FED), and a plasma-addressed liquid crystal display (PALC).

The display panel or the flat display device according to the first to fourth aspects of the present invention (hereinafter referred to as
(In some cases, the display panel or the flat panel display device of the present invention may be collectively referred to as a display panel or a flat display device.) In some cases, partition walls may be formed in a grid pattern.

Conventionally known insulating materials can be used as a material for forming the partition, the dummy partition, and the protective partition in the display panel or the flat display device of the present invention.
For example, a material in which a metal oxide such as alumina is mixed with a widely used low-melting glass (called a low-melting glass paste) can be exemplified. Note that by making the partition walls black, a so-called black matrix can be formed, and the display screen can have high contrast. As a method for making the partition walls black, a method of forming the partition walls using a low-melting glass paste colored black can be exemplified. The partition, the dummy partition, and the protective partition in the display panel or the flat display device of the present invention are formed on the substrate or the first substrate, but depending on the structure of the display panel or the flat display device. , On board or first
May be formed directly on the first substrate, or may be formed above the substrate or the first substrate.

As a method of forming the partition and the dummy partition in the display panel or the flat display device according to the first or second embodiment of the present invention, a screen printing method, a dry film method (embedding method), and a photosensitive method are exemplified. can do. In some cases, a sandblasting method can be employed. 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 to form a substrate. This is a method in which after a material layer for forming a partition is formed thereon, the material layer for forming a partition is fired. What is the dry film method (embedding method)?
This is a method in which a photosensitive film (dry film) is laminated on a substrate, the photosensitive film at a portion where a partition is to be formed is removed by exposure and development, a partition-forming material layer is buried in an opening formed by the removal, and baked. . The photosensitive film is burned and removed by baking, leaving a partition-forming material layer embedded in the opening, thereby forming a partition. The photosensitive method is a method in which a partition-forming material layer having photosensitivity is formed on a substrate, the partition-forming material layer is patterned by exposure and development, and then baking is performed. Sandblasting is, for example, screen printing or roll coater,
Using a doctor blade, nozzle discharge type coater, etc.
After forming a partition-forming material layer on a substrate or the like, and drying,
In this method, a partition-forming material layer on which a partition is to be formed is covered with a mask layer, and then the exposed portion of the partition-forming material layer is removed by sandblasting.

Further, in the display panel or the flat display device according to the third or fourth aspect of the present invention, a screen printing method,
Examples of the method include a dry film method (embedding method), a photosensitive method, and a sandblast forming method. In particular, when the sandblast forming method is applied, the display panel or the flat panel according to the third or fourth embodiment of the present invention is preferably used. The features of the type display device can be utilized.

As the constituent materials of the substrate, the first substrate, and the second substrate (hereinafter, collectively referred to as substrates, etc.), high strain point glass, soda glass (Na ₂ O.CaO.Si)
O ₂ ), borosilicate glass (Na ₂ O.B ₂ O ₃ .SiO ₂ ),
Forsterite (2MgO · SiO _2), can be exemplified 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. A rectangular shape can be given as an external shape of the substrate or the like.

When the outer shape of the substrate or the like is rectangular, the plurality of stripe-shaped partition walls preferably extend in parallel with the side of the substrate or the like. In addition, even when the partition has a meandering structure, it is preferable that the entire partition extends in parallel with a side of the substrate or the like. In the display panel or the flat display device of the present invention, when the effective area has a rectangular shape in which two opposing sides extend in the first direction and the other two opposing sides extend in the second direction, The direction in which the partition extends is preferably the first method or the second direction.

The outer edge of the first substrate and the outer edge of the second substrate can be joined using, for example, frit glass. Other components of the first panel and the second component
The other components of this substrate depend on the components of the flat panel display. These components will be described later.
In some cases, a partition may be provided on the second panel, and further a dummy partition or a protective partition may be provided. In this case, the top surface of the dummy partition or the protective partition provided on the first panel may be provided on the second panel.
It is desirable that the top surfaces of the dummy partition walls and the protective partition walls provided on the panel abut.

[0047]

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). In the following description, the display panel and the first panel are collectively referred to as a first panel, and a substrate forming the display panel and a first substrate forming the first panel are collectively referred to as a first substrate. It may be called.

(Embodiment 1) Embodiment 1 relates to a display panel and a flat display device according to the first embodiment of the present invention. The flat display device according to the first embodiment is an AC-driven plasma display device. 1 and 2 are schematic plan views of the first panel 10. FIG. 1 and 2 show only the first substrate 11, the partition 14, the through-hole 16, and the dummy partition 41 among the components constituting the first panel 10, and other components are not shown. Omitted.

The first panel (display panel) 10 according to the first embodiment includes a first substrate 11, a partition 14 formed on the first substrate 11, and a dummy partition 41.
The display panel or the flat-panel display device has an effective area 31 for displaying and an invalid area 32 which is arranged on the outer periphery of the effective area 31 and surrounds the effective area 31. In the figure, the effective area 31 is surrounded by a dotted line.
The invalid area 32 is an area surrounded by a dotted line and a chain line. A plurality of stripe-shaped barrier ribs 14 are formed in a portion of the first substrate 11 corresponding to the effective area 31.
In the flat panel display, the outer edge of the first substrate 11 (the area outside the invalid area 32) and the outer edge of the second substrate 21 (the area outside the invalid area 32) are fritted. They are joined by glass (not shown). In the effective region 31 according to the first embodiment, two opposing sides extend in a first direction (the left-right direction in the drawing, which is referred to as an X direction), and the other two opposing sides extend in a second direction (up and down in the drawing). Direction, Y
(Referred to as direction). The plurality of striped partition walls 14 extend in the Y direction. In the examples shown in FIGS. 1 to 7 and 10, the length of one side in the X direction of the rectangular shape of the effective area 31 (the part indicated by the dotted line in the figure) is set to 1
0.6 cm, the length of one side in the Y direction is 8.9 cm, and the length of one side in the X direction of the rectangular shape of the invalid area 32 (the portion indicated by the dashed line in the figure) is 12 cm, and one side in the Y direction. The length was 15 cm. 8 and 9, the length of one side in the Y direction of the rectangular shape of the effective area 31 (the portion indicated by the dotted line in the figure) is 10.6 cm, and the length of one side in the X direction is 8.9 cm. The length of one side in the Y direction of the rectangular shape of the invalid region 32 (the portion indicated by the dashed line in the figure) is 12 cm, X
The length of one side in the direction was 15 cm. The above-described configuration of the first panel is the same in each of the following embodiments, except for the dummy partition wall 41.

In the first panel 10 according to the first embodiment, the communicating portion 32A of the invalid area 32 (specifically, the first panel) that communicates with the internal space of the flat display device when the flat display device is assembled. A dummy partition wall 41 is formed in a portion of the first substrate 11 located between the through-hole 16 provided in the substrate 11 and the effective region 31 (located in the invalid region 32). In the first embodiment, the number of the dummy partition walls 41 is one, but a plurality of dummy partition walls arranged in parallel may be used. In the example shown in FIG. 1, the communicating portion 32A of the invalid area 32 is located outside one side of the rectangular shape extending in the first direction (X direction). On the other hand, in the example shown in FIG.
It is located outside one side of the rectangular shape extending in the second direction (Y direction). The dummy partition 41 was linear, and the length of the dummy partition 41 was 8.9 cm. The average width d of the partition 14 is 0.05 mm, and the average width d _{D of the} dummy partition 41 is 0.05 mm.
Was 0.05 mm, and the average height of the partition wall 14 and the dummy partition wall 41 was 0.13 mm.

The first panel 10 has the same structure as the first panel 10 in the plasma display device described with reference to FIGS. 11 and 12 except that a dummy partition wall 41 is provided. The second panel 20 has the same structure as the second panel 20 in the plasma display device described with reference to FIG. The first panel 10 and the second panel 20 will be described later in detail.

Embodiment 2 Embodiment 2 relates to a display panel and a flat display device according to the first and second embodiments of the present invention. The flat display device according to the second embodiment is also an AC-driven plasma display device. In FIG.
FIG. 1 shows a schematic plan view of a first panel 10. In FIG. 3, among the constituent elements of the first panel 10, the first substrate 11, the partition 14, the through-hole 16, the dummy partition 42, 43.
Only the components are shown, and other components are not shown.

Also in the display panel or the flat display device of the second embodiment, the effective region 31 has two opposing sides extending in the first direction (X direction) and the other two opposing sides extending in the second direction. It has a rectangular shape extending in the direction (Y direction), and the communicating part 32A of the invalid area 32 is located outside the corner of the effective area 31 having the rectangular shape. The dummy partition walls 42 and 43 have an "L" shape. The size of the rectangular shape
The same as the first embodiment. Also, the dummy partition walls 42, 4
3, the total length is 8.9 cm, the partition 14 and the dummy partition 42,
43 had an average height of 0.13 mm.

Alternatively, the communicating portion 32A of the invalid area 32 which communicates with the flat display device at the time of assembling the flat display device.
(Specifically, the through hole 1 provided in the first substrate 11
6) is located outside the corner of the effective area 31 having a rectangular shape. When so-called Gaussian coordinates (XY coordinates) are assumed, the effective area having a rectangular shape is located in the second quadrant, and the outside of the corner is located in the fourth quadrant. The same applies to the following description. Then, a first portion extending in the first direction (X direction) is provided on a portion of the first substrate 11 (located in the invalid region 32) located between the communicating portion 32A of the invalid region 32 and the valid region 31. A dummy partition wall 42, and
A dummy partition wall extending in the second direction (Y direction) and including a second dummy partition wall 43 continuous with the first dummy partition wall is formed. In the second embodiment, the first and second
Although the number of the dummy partition walls 42 and 43 is set to one, a plurality of first and second dummy partition walls 42 and 43 may be arranged in parallel. The length of the first dummy partition 42 is set to 1
0.6 cm, the length of the second dummy partition 43 is 8.9 cm
And Further, the average width d of the partition walls 14 is 0.05 mm, and the average width d _D of the first and second dummy partition walls 42 and 43 is 0.1 mm.
05 mm.

(Embodiment 3) Embodiment 3 relates to a display panel and a flat display device according to a third aspect of the present invention. The flat display device according to the third embodiment is also an AC-driven plasma display device. FIG. 4 shows the first panel 10.
1 shows a schematic plan view of FIG. FIG. 4 shows the first panel 1
0, the first substrate 11 and the partition 1
4, only the through hole 16, the first partition walls 51A and 51B, and the second partition walls 52A and 52B are shown, and other components are not shown. Further, the first partitions 51A and 51B and the second partitions 52A and 52B are represented by thick line segments and the like.

In the display panel or the flat panel display according to the third embodiment, a portion of the first substrate 11 corresponding to the invalid area 32 is provided in the first direction so as to surround the rectangular effective area 31. First protection partitions 51A and 51B extending in the (X direction) and second protection partitions 52A and 52B extending in the second direction (Y direction) are formed. In the third embodiment, the first protective partition walls 51A, 51
B and the number of each of the second protective partitions 52A and 52B are set to 3, but are not limited to this value. The communicating portion 32A (specifically, the through hole 16 provided in the first substrate 11) of the invalid region 32 that communicates with the internal space of the flat display device at the time of assembling the flat display device has a rectangular shape. It is located outside the corner.

A portion of the first substrate 11 (located in the invalid region 32) located between the communicating portion 32A of the invalid region 32 and the valid region includes a first protective partition 51A and a second protective partition. 52A are continuously formed, and the invalid area 32
Between the first and second protection partitions formed on the portion of the first substrate 11 located outside the rectangular corner portion where the communication portion 32A does not exist (in the example shown in FIG. 4). Are a first protective partition 51A and a second protective partition 52B.
Between the first protective partition 51B and the second protective partition 52A.
And between the first protective partition 51B and the second protective partition 52B). At the time of assembling the flat-panel display device, the gas in the internal space of the flat-panel display device is exhausted through the through holes 16 and these gaps, or
A discharge gas can be introduced into such an internal space.
The average width d of the partition 14 is 0.05 mm, and the first and second
Average width d of the protective partition walls 51A, 51B, 52A, 52B of FIG.
_D is 0.05 mm, and the average height of the partition 14 and the first and second protective partitions 51A, 51B, 52A, 52B is 0.13.
mm. The gap between the first protection partitions 51A and 51B is 0.17 mm, and the second protection partitions 52A and 52B are separated.
The gap between 2B is 0.17 mm, and the gap between the end of the second protective partition and the first protective partition is 0.15 mm.
And

In the example shown in FIG. 4, there is a gap between the end of the second protective partition and the first protective partition, and the gap is located on the extension of the second protective partition. Although the first protection partition is provided, as shown in FIG. 5, a gap exists between the end of the first protection partition and the second protection partition, and the first protection partition is provided. The second protection partition may be provided on the extension of the above, or the first protection partition and the second protection partition shown in FIGS. 4 and 5 may be combined.

Embodiment 4 Embodiment 4 relates to a display panel and a flat panel display according to a fourth embodiment of the present invention. The flat display according to the fourth embodiment is also an AC-driven plasma display. FIG. 6A is a schematic plan view of the first panel 10, and FIG. 6B is a schematic enlarged view of a part of the first panel 10. FIG. 6 shows the first panel 10 of the components constituting the first panel 10.
Substrate 11, partition 14, through hole 16, first partition 53
A, 53B, only the second partition walls 54A, 54B are displayed,
Illustration of other components is omitted. Also, the first partition 53
A, 53B and the second partition walls 54A, 54B are represented by thick line segments.

In the fourth embodiment, a portion of the first substrate 11 corresponding to the ineffective area 32 is provided with M pieces (embodiments) extending in the first direction (X direction) so as to surround the rectangular effective area 31. In Embodiment 4, M = 3) first protective partition walls 53A and 53B, and N (N = M−1, 2) second N extending in the second direction (Y direction). Are formed. Note that the invention is not limited to M = 3. Then, counting from the effective area 31 side, a gap is formed between the end of the n-th (1 ≦ n ≦ M−1) first protection partition and the n-th second protection partition. The n-th second protection barrier is present on the extension of the n-th first protection barrier, and the n-th second protection barrier is present.
There is a gap between the end of the (1) th protective partition and the (n + 1) th first protective partition, and the (n + 1) th protective partition extends on the extension of the nth second protective partition. There is a first protective barrier.

More specifically, as shown in a partially enlarged view of FIG. 6B, for example, a first first protective partition 53
There is a gap between the second protective diaphragm 54A ₁ end of A ₁ and the first run and first -th first protective diaphragm 53
The extension of A ₁ there is a second protective diaphragm 54A ₁ of the first run, the second end of the protective diaphragm 54A ₁ of the first run and the first protective diaphragm 53A ₂ of the second knots there is a gap between, and, in the first run of the second protective diaphragm 54A ₁ of an extension there is a first protective diaphragm 53A ₂ of the second knots.
Further, a second -th first end of the protective diaphragm 53A ₂ of the second
There is a gap between the second protective diaphragm 54A ₂ of the second, and, in the second -th first protective diaphragm 53A ₂ of the extension of the present second protective diaphragm 54A ₂ of the second knots and, between the second -th second protective diaphragm 54A ₂ ends and the third -th first protective diaphragm 53A ₃ of the gap exists, and,
_On the extension of the second second protective partition wall 54A2, the third
There is a first protective diaphragm 53A ₃ of the eyes. That is, a kind of maze is formed outside the corner of the rectangular effective area 31 by the ends of the first protection partitions 53A and 53B and the ends of the second protection partitions 54A and 54B. .

Also in the fourth embodiment, when assembling the flat display device, the communicating portion 32A of the invalid area 32 communicating with the internal space of the flat display device (specifically, the through-hole provided on the first substrate 11). The hole 16) is located outside the corner of the effective area 31 having a rectangular shape. When assembling the flat display device, the gas in the internal space of the flat display device can be exhausted or the discharge gas can be introduced into the internal space via the through holes 16 and the gaps therebetween. The average width d of the partition 14 is 0.05 mm,
And the average width d _D of the second protective barriers 53A, 53B, 54A, 54B is 0.05 mm, and the average height of the barrier 14, the first and second protective barriers 53A, 53B, 54A, 54B is 0.13 mm. did. In addition, the first protective partition walls 53A, 53
The gap between 3B is 0.17 mm, the second protective partition 5
The gap between 4A and 54B is 0.17 mm, and the first
The gap between the end of the protective partition and the second protective partition,
The gap between the end of the protective partition and the first protective partition is 0.
It was 15 mm.

As shown in a modification of FIG. 7, M = 3,
N = 3 may be set. In this case, as shown in FIG. 7B, for example, the first first protective partition 53A ₁
Second there is a gap between the protective diaphragm 54A _1, and, the first run of the first protective diaphragm 53A end a of the first run of
There are second protective diaphragm 54A ₁ of the first run is over ₁ extension, and the first run second end of the protective diaphragm 54A ₁ of the second
There is a gap between the first protective diaphragm 53A ₂ of the second, and, in the first run of the second protective diaphragm 54A ₁ of an extension there is a first protective diaphragm 53A ₂ of the second knots I do.
Further, a second -th first end of the protective diaphragm 53A ₂ of the second
There is a gap between the second protective diaphragm 54A ₂ of the second, and, in the second -th first protective diaphragm 53A ₂ of the extension of the present second protective diaphragm 54A ₂ of the second knots and, between the second -th second protective diaphragm 54A ₂ ends and the third -th first protective diaphragm 53A ₃ of the gap exists, and,
_On the extension of the second second protective partition wall 54A2, the third
There is a first protective diaphragm 53A ₃ of the eyes. Furthermore, there is a gap between the end portion and the second protective diaphragm 54A ₃ of the third -th first protective diaphragm 53A ₃ of the third knots, and,
_On the extension of the _third first protective partition 53A3, a third
There are second protective diaphragm 54A ₃ of the eyes. That is, a kind of maze is formed outside the corner of the rectangular effective area 31 by the ends of the first protection partitions 53A and 53B and the ends of the second protection partitions 54A and 54B. .

In the example shown in FIG. 6 or FIG.
The partition 14 extends in the second direction (Y direction), and the first protective partitions 53A and 53B extend in the first direction (X direction).
Of the protective partition walls 54A and 54B extend in the second direction (Y direction). On the other hand, in the example shown in FIG. 8 or FIG.
The second protection partitions 54A and 54B are in the second direction (Y direction).
Extends to. In addition, the labyrinth-like first protection partition walls 53A and 53B and the second protection partition walls 54A and 54B shown in FIG.
Substantially the maze-shaped first protective partition 53 shown in FIG.
A, 53B and the second protective barriers 54A, 54B are the same as the first protective barriers 53A, 53 shown in FIG.
B and the second protective partitions 54A, 54B are substantially the same as the maze-shaped first protective partitions 53A, 53B and the second protective partitions 54A, 54B shown in FIG. Description is omitted.

(Embodiment 5) In Embodiment 5, the protective partition described in Embodiment 3 and Embodiment 4
Are combined. That is, as shown in a schematic plan view in FIG. 10, the first protective partition 51 </ b> A and the second protective partition 51 </ b> A Protective partition 5
2A are continuously formed, and a first protective partition 53 is provided on a portion of the first substrate 11 located outside a corner portion of the effective region 31 having a rectangular shape in which no communication portion of the invalid region exists.
The end of A and the end of the second protective partition 54A constitute the kind of maze described in the fourth embodiment. In FIG. 10, among the components constituting the first panel 10, the first substrate 11, the partition 14, the through hole 16, the first partition 51
A, 53A, only the second partition walls 52A, 54A are displayed,
Illustration of other components is omitted. Also, the first partition 51
A, 53A and the second partition walls 52A, 54A are represented by thick line segments. The structures of the maze-shaped first protection partitions 53A and 53B and the second protection partitions 54A and 54B are shown in FIGS.
Alternatively, the structure shown in FIG. 9 can be adopted.

Hereinafter, the first panel 10 and the second panel 20 in the case where the flat display device of the present invention is constituted by an AC-driven (AC type) plasma display device will be described.
The AC-type plasma display device has the same structure as that shown in FIGS. 11 and 12 except for a dummy partition and a protective partition. FIG. 11 shows a part of the effective area 31. For example, but not limited to, an AC type plasma display device belongs to a so-called three-electrode type, and a pair of discharge sustaining electrodes 2 is used.
A discharge occurs between the two. The pair of discharge sustaining electrodes 22 is the second
The so-called address electrodes 12 are formed on the first substrate 11. In the following description, it is assumed that the partition wall 14 extends in the second direction (Y direction).

The first panel 10 includes a first substrate 11, address electrodes (also referred to as data electrodes) 12 provided in stripes on the first substrate 11, and address electrodes 1.
Dielectric film 13 formed on the first substrate 11 including on the second substrate 11
And the adjacent address electrodes 12 on the dielectric film 13
In this region, an insulating partition wall 14 extending in parallel with the address electrode 12 and a phosphor layer 15 provided over the dielectric film 13 and on the side wall surface of the partition wall 14 are formed.
The phosphor layer 15 includes a red phosphor layer 15R, a green phosphor layer 1
5G and a blue phosphor layer 15B, and the phosphor layers 15R, 15G, and 15B of these colors are provided in a predetermined order. Dummy barriers and protection barriers are formed in the invalid area 32, but these are not shown.

On the other hand, the second panel 20 is composed of the second substrate 21
A discharge sustaining electrode 22 provided in a stripe shape on the second substrate 21 and made of a transparent conductive material;
2, a bus electrode 23 made of a material having a lower electric resistivity than the discharge sustaining electrode 22 and a first substrate 21 including the bus electrode 23 and the discharge sustaining electrode 22. And a protective layer 24 made of a dielectric material. A pair of sustain electrodes 2
2 extend in a first direction (X direction) in parallel with each other;
The address electrodes 12 and the partitions 14 extend in the second direction (Y direction). The pair of discharge sustaining electrodes 22 and the address electrodes 12 are arranged to face each other so as to face each other.

As shown in FIG. 12, a through hole 16 is formed in the communicating portion 32A of the invalid area 32 of the first substrate 11, and the through hole 16 is formed, for example, by an exhaust pipe 17 made of a glass tube. Is in communication with The exhaust pipe 17 is attached to the outside of the first substrate 11 using, for example, frit glass (not shown), and is sealed.

The discharge sustaining electrode 22 has a curved line (for example,
It is also possible to adopt a configuration in which an arbitrary combination of curves, such as a combination of "" characters, a combination of "S" characters, or a combination of arcs, is drawn. Further, a pair of bus electrodes extend in a first direction, and between the pair of bus electrodes, one discharge sustaining electrode extends from one bus electrode to a position short of the other bus electrode in a second direction. A structure in which the other sustain electrode extends in the second direction from the bus electrode to the front of the one bus electrode may be employed.

Alternatively, the formation of the address electrodes may be omitted, and one of the pair of sustain electrodes may be formed on the second substrate 21 and the other may be formed on the first substrate 11. The plasma display device having such a configuration is called a two-electrode type for convenience. In this case, the projected image of one of the sustain electrodes extends in the first direction (X direction), the projected image of the other sustain electrode extends in the second direction (Y direction), and the pair of sustain electrodes is They are arranged so as to face each other.

In these configurations, the distance between the pair of discharge sustaining electrodes is essentially arbitrary as long as the required glow discharge occurs at a predetermined discharge voltage,
It is desirably not more than × 10 ⁻⁵ m, preferably not more than 2 × 10 ⁻⁵ m from the viewpoint of reducing the discharge voltage.

For example, the plasma display device will be described below by taking a three-electrode type plasma display device as an example. In the case of a two-electrode type plasma display device, the "address" The “electrode” may be read as “the other sustaining electrode”.

The conductive material constituting the sustain electrode 22 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 15 is observed through the first substrate 11, it does not matter whether the conductive material forming the sustain electrode 22 is transparent or opaque. Is provided on the first substrate 11, the address electrodes 12 need to be transparent. On the other hand, in the reflection type plasma display device, since the light emission of the phosphor layer 15 is observed through the second substrate 21, it does not matter whether the conductive material forming the address electrode 12 is transparent or opaque. Electrode 2
The conductive material constituting 2 needs to be transparent. still,
The transparency / opacity described here is based on the light transmittance of the conductive material at an emission wavelength (visible light range) specific to the phosphor material. That is, if it is transparent to the light emitted from the phosphor layer 15, it can be said that the conductive material forming the discharge sustaining electrodes 22 and the address electrodes 12 is transparent. As opaque conductive materials, Ni, Al, Au, Ag, Al, Pd /
Ag, Cr, Ta, Cu, Ba, LaB 6, Ca 0.2 La
A material such as _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 .
The address electrodes 12 and the discharge sustaining electrodes 22 can be formed by a sputtering method, an evaporation method, a screen printing method, a sandblast method, a plating method, a lift-off method, or the like.

In addition to the discharge sustaining electrodes 22, a bus electrode 23 made of a material having a lower electric resistivity than the discharge sustaining electrodes 22 is provided in contact with the discharge sustaining electrodes 22 in order to lower the impedance of the entire discharge sustaining electrodes 22. Is provided.
The bus electrode 23 is typically made of a metal material, for example, A
g, Al, Ni, Cu, Cr, and a Cr / Cu / Cr laminated film. The bus electrode 23 made of such a metal material is used in a reflection type plasma display device.
Since the amount of visible light transmitted from the phosphor layer 15 and passing through the second substrate 21 can be reduced and the luminance of the display screen can be reduced, the electric resistance required for the entire discharge sustaining electrode 22 is reduced. It is preferable to form as thin as possible within the range obtained. The bus electrode 23 can be formed by a sputtering method, an evaporation method, a screen printing method, a sand blast method, a plating method, a lift-off method, or the like.

It is preferable that a protective layer 24 is formed on the surface of the discharge sustaining electrode 22 based on, for example, an electron beam evaporation method, a sputtering method, an evaporation method, a screen printing method, or the like. By providing the protective layer 24, direct contact between ions and electrons and the discharge sustaining electrode 22 can be prevented, so that wear of the discharge maintaining electrode 22 can be prevented.
In addition, the protective layer 24 has a function of accumulating wall charges generated during the address period, a function of emitting secondary electrons required for discharge, a function as a resistor for limiting an excessive discharge current,
It has a memory function of maintaining a discharge state. As a material for forming the protective layer 24, magnesium oxide (MgO), magnesium fluoride (MgF ₂ ), aluminum oxide (A
l ₂ O ₃ ). Among them, magnesium oxide is chemically stable, the sputtering rate is low, the light transmittance at the emission wavelength of the phosphor layer 15 is high,
It is a suitable material having features such as a low discharge starting voltage. Incidentally, the protective layer 24 may have a laminated film structure made of at least two kinds of materials selected from the group consisting of magnesium oxide, magnesium fluoride and aluminum oxide.

Alternatively, the protective layer 24 may have a two-layer structure. The protective layer having a two-layer structure can be composed of a dielectric layer in contact with the sustain electrode 22, and a coating layer provided on the dielectric layer and having higher secondary electron emission efficiency than the dielectric layer. The dielectric layer is typically comprised of low-melting glass or SiO _2. The coating layer is typically made of magnesium oxide (MgO), magnesium fluoride (MgF ₂ ), aluminum oxide (Al ₂ O).
₃ ) Can be composed. With such a two-layer structure, when the transparency (light transmittance) of the coating layer in the wavelength region of vacuum ultraviolet rays is not so high, the transparency of the entire protective layer is ensured by the dielectric layer, and the secondary electron emission efficiency is improved. It can be adopted for the purpose of securing the height with the coating layer. Thus, a stable discharge maintaining operation can be performed, and further, a structure in which vacuum ultraviolet rays are hardly absorbed by the protective layer and visible light emitted from the phosphor layer is hardly absorbed by the protective layer can be obtained. .

The phosphor layer 15 is made of, for example, a phosphor material selected from the group consisting of a phosphor material that emits red light, a phosphor material that emits green light, and a phosphor material that emits blue light. 12 is provided above. When the plasma display device performs color display, specifically, for example, a phosphor layer (red phosphor layer 15R) made of a phosphor material that emits red light is provided above the address electrode 12, and emits green light. A phosphor layer (green phosphor layer 15G) made of a phosphor material that emits blue light is provided above another address electrode 12, and a phosphor layer (blue phosphor layer 15B) made of a phosphor material that emits blue light is provided. ) Are provided above another address electrode 12, and the phosphor layers 15R, 15G, and 15B that emit light of these three primary colors have one.
A set is provided according to a predetermined order. A region in which the pair of discharge sustaining electrodes 22 and the pair of phosphor layers 15R, 15G, and 15B that emit these three primary colors corresponds to one pixel. The red phosphor layer 15R, the green phosphor layer 15G, and the blue phosphor layer 15B may be formed in a stripe shape or a lattice shape.

As a phosphor material constituting the phosphor layer 15
Has a high quantum efficiency among conventionally known phosphor materials,
Appropriate selection of phosphor material with low saturation for vacuum ultraviolet rays
Can be used. Assuming color display,
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 for forming the body layer 15, a thick film printing method, phosphor particles are used.
Spraying method, beforehand at the site where phosphor layer 15 is to be formed
Attaching an adhesive substance and attaching phosphor particles
Method, using photosensitive phosphor paste, for exposure and development
Therefore, the method of patterning the phosphor layer 15
Unnecessary portions are formed by sandblasting after forming the optical body layer 15.
There can be mentioned a method of removing more.

The phosphor layer 15 may be formed directly on the address electrode 12 or may be formed on the address electrode 12 and on the side wall surface of the partition 14.
Alternatively, the phosphor layer 15 may be formed on the dielectric film 13 provided on the address electrode 12, or may be formed on the dielectric film 13 provided on the address electrode 12 from the side wall surface of the partition 14. It may be formed over. Furthermore, the phosphor layer 15 may be formed only on the side wall surface of the partition 14. As a constituent material of the dielectric film 13, a low-melting glass or SiO ₂ can be used.

A pair of partitions 14 formed on the first substrate 11, a discharge sustaining electrode 22, an address electrode 12, and a phosphor layer 15 occupying an area surrounded by the pair of partitions 14.
Constitutes one discharge cell. A discharge gas composed of a rare gas is sealed in the discharge cell, more specifically, in a discharge space surrounded by the partition wall 14, and the phosphor layer 15 is formed in the discharge gas in the discharge space. It emits light when irradiated with ultraviolet light generated based on the AC glow discharge generated in step (1).

In the plasma display device which is one mode of the flat display device of the present invention, the pressure of the discharge gas composed of the rare gas sealed in the discharge space is 1 × 10 ² Pa (0.000 Pa).
1 atm) to 5 × 10 ⁵ Pa (5 atm), preferably 1 atm
× 10 ³ Pa (0.01 atm) to 4 × 10 ⁵ (4 atm)
It is desirable that When the interval between the pair of sustain electrodes 22 is less than 5 × 10 ⁻⁵ m, the pressure of the discharge gas in the discharge space is set to 1.0 × 10 ² Pa (0.00
1 atm) or more and 3.0 × 10 ⁵ Pa (3 atm) or less, preferably 1.0 × 10 ³ Pa (0.01 atm) or more.
× 10 ⁵ Pa (2 atm) or less, more preferably 1.0 ×
It is preferable that the pressure be in the range of 10 ⁴ Pa (0.1 atm) or more and 1.0 × 10 ⁵ Pa (1 atm) or less. The phosphor layer emits light when irradiated with ultraviolet light, and within such a pressure range, the higher the pressure, the lower the sputtering rate of the various members constituting the plasma display device, and the longer the life of the plasma display device. be able to.

The following points are required for the discharge gas sealed in the discharge space (or the internal 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 the discharge 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 can be used. Xe having the longest resonance line wavelength among these discharge gases is:
Since it also emits strong vacuum ultraviolet light having a wavelength of 172 nm, it is a suitable discharge gas.

Here, the light emission state of the glow discharge in the discharge cell will be described with reference to FIG. FIG. 14A schematically shows a light emitting state when a DC glow discharge is performed in a discharge tube in which a discharge 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, The cathode glow B and the aston dark area A appear symmetrically in this order. The state shown in FIG. 14B is seen 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. 15A, and the negative glow D is located at the center between the electrodes.
On both sides of the negative glow D, a cathode dark portion C, a cathode glow B and an aston dark portion A appear symmetrically in this order. The state shown in FIG. 15A indicates that the distance between the pair of discharge sustaining electrodes 22 is one.
This is a state achieved in an AC-type plasma display device of about × 10 ⁻⁴ m or more. Further, when an AC voltage is applied to the pair of discharge sustaining electrodes when the distance between the pair of sustaining electrodes 22 is less than 5 × 10 ⁻⁵ m, more preferably 2 × 10 ⁻⁵ m or less. FIG. 15B schematically shows a light emitting state of the plasma display device of FIG. The cathode glow B is located at the center between the pair of sustain electrodes, and the aston dark portions A appear on both sides of the cathode glow B.
In some cases, some negative glows may exist. As described above, in the plasma display device, if the distance between the pair of discharge sustaining electrodes 22 is less than 5 × 10 ⁻⁵ m, the distance between the pair of discharge sustaining electrodes 22 is about 1 × 10 ⁻⁴ m or It is possible to use a discharge mode (cathode glow) completely different from that of a plasma display device that is higher than that. Therefore, as a result of achieving high AC glow discharge efficiency, high luminous efficiency and luminance can be obtained in the plasma display device.

The first panel 10 can be manufactured by the following method. That is, first, an address electrode 12 is formed on a first substrate 11 made of high strain point glass or soda glass by printing a silver paste in a stripe shape by, for example, a screen printing method, and performing baking. The address electrode 12 extends in a second direction (Y direction) orthogonal to the first direction (X direction). Next, a low-melting glass paste layer is formed on the entire surface by screen printing, and the low-melting glass paste layer is baked to form the dielectric film 1.
Form 3

After that, the partition, the dummy partition, and the protective partition described in Embodiment Modes 1 to 5 are formed. The partition walls, the dummy partition walls, and the protective partition walls are formed, for example, by printing a low-melting glass paste by, for example, a screen printing method on the dielectric film 13 above a region between the adjacent address electrodes 12 and performing baking. be able to. Alternatively, partition walls, dummy partition walls, and protective partition walls can be formed based on a dry film method (embedding method) or a photosensitive method. Furthermore, the partition wall, the dummy partition wall, and the protective partition wall can be formed by the sand blast forming method described with reference to FIG. 13, but when the sand blast forming method is employed,
In particular, it is preferable that the display panel or the first panel have the structure described in Embodiment Modes 3 to 5. If the display panel or the first panel has the configuration described in Embodiment Modes 3 to 5, when the low-melting glass paste layer 60 is partially removed by sandblasting, a protective partition wall exists. Therefore, the processing rate of the portion corresponding to the longitudinal end of the partition wall 14 can be made equal to that of the other portions, and the mask layer 61 of the portion corresponding to the longitudinal end portion of the partition wall 14 has the low melting point glass paste layer 60. It is difficult to peel off from Therefore, the portion of the low-melting glass paste layer 60 to be left is securely left, and the finally obtained partition is not damaged, and the partition 1 having a desired shape is not damaged.
4 can be formed. Also, no damage occurs to the outermost partition wall 14.

Next, the phosphor slurries of the three primary colors are sequentially printed and baked, so that the phosphor layer 15 extends from the dielectric film 13 between the partition walls 14 to the side wall surface of the partition wall 14.
R, 15G and 15B are formed. By the above steps, the first
The panel 10 can be completed.

The second panel 20 can be manufactured by the following method. That is, first, an ITO layer is formed on the entire surface of the second substrate 21 made of high strain point glass or soda glass by, for example, a sputtering method, and the ITO layer is patterned into stripes by a photolithography technique and an etching technique. Discharge sustain electrode 22
Are formed in plurality. The sustain electrode 22 extends in the first direction (X direction). Next, a chromium film is formed on the entire surface by, for example, a sputtering method, and the chromium film is patterned by a photolithography technique and an etching technique, thereby forming a bus electrode 23 along an edge of each discharge sustaining electrode 22. Thereafter, a 10 μm-thick magnesium oxide (Mg) was deposited on the entire surface by electron beam evaporation.
O) is formed. Through the above steps, the second panel 20 can be completed.

Next, the plasma display device is assembled. That is, first, a seal layer (not shown) is formed on the peripheral portion of the first panel 10 by, for example, screen printing.
Note that an exhaust pipe (chip pipe) 17 communicating with the through hole 16 provided in the first substrate 11 is attached to the outer surface of the first substrate 11 in advance using frit glass. Next, the first panel 10 and the second panel 20 are bonded and fired to cure the seal layer. Then, the internal space formed between the first panel 10 and the second panel 20 is inserted into the through hole 1.
6. After exhausting through the exhaust pipe 17, a discharge gas composed of a Ne-Xe mixed gas (for example, a Ne50% -Xe50% mixed gas) is, for example, at a pressure of 8 × 10 ⁴ Pa (0.8 atm).
Will be introduced at Thereafter, the exhaust pipe 17 is heat-sealed to seal the internal space, thereby completing the plasma display device. When exhausting the internal space or introducing the discharge gas into the internal space, a dummy partition or a protective partition is provided, so that the gas flow can be regulated. As a result, the display panel or the first panel 10 and the Contamination hardly occurs on the second panel 20.

Alternatively, the flat display device of the present invention is
It can also be constituted by a cold cathode field emission display (FED: field emission display). There are various types of cold cathode field emission display devices depending on the structure of a cold cathode field emission device (hereinafter, referred to as a field emission device). Hereinafter, a cold cathode field emission display including a Spindt type field emission device will be described as an example.

FIG. 16 shows a typical configuration example of a cold cathode field emission display. In this display device, a second panel 120 corresponding to a display panel and a first panel 110 corresponding to a back panel are arranged to face each other.
Reference numerals 0 and 120 are adhered to each other via a frame (not shown) at each peripheral edge, and an internal space between both panels is a vacuum space. The first panel 110 includes a field emission element as an electron emitter. FIG. 16 shows a so-called Spindt-type field emission device having a conical electron emission electrode 116 as an example of the field emission device. The Spindt-type field emission device has a stripe-shaped cathode electrode 112 formed on a first substrate 111, an insulating layer 113 formed on the cathode electrode 112 and the first substrate 111, and an insulating layer 113 formed on the insulating layer 113. Striped gate electrode 1
14 and a conical electron emission electrode 1 formed in an opening 115 provided in the gate electrode 114 and the insulating layer 113.
16. Note that the electron emission electrode 116 is
It is provided on the portion of the cathode electrode 112 located at the bottom of the opening 115. In addition, a partition 14 is provided over the insulating layer 113. Usually, many electron emission electrodes 116 are associated with one of the phosphor layers 122 described later. A relatively negative voltage (video signal) is applied to the electron emission electrode 116 from the cathode electrode drive circuit 131 through the cathode electrode 112, and the gate electrode 114
, A relatively positive voltage (scanning signal) is applied from the gate electrode drive circuit 132. Electrons are emitted from the tip of the electron emission electrode 116 based on the quantum tunnel effect according to the electric field generated by the application of these voltages. Conversely, in some cases, a scanning signal is input to the cathode electrode 112 and a video signal is input to the gate electrode 114 in some cases.

On the other hand, the second panel 120 includes a plurality of phosphor layers 122 formed in a dot shape or a stripe shape on a second substrate 121 made of glass or the like, and a phosphor layer 12.
And an anode electrode 124 formed of a conductive reflection film formed on the second and second substrates 121. Anode electrode 12
4, a positive voltage higher than a positive voltage applied to the gate electrode 114 is applied from an acceleration power supply (anode electrode driving circuit) 133 and electrons emitted from the electron emission electrode 116 into the vacuum space are It serves to guide towards layer 122. Further, the anode electrode 124 has a function of protecting the phosphor particles constituting the phosphor layer 122 from sputtering by particles such as ions, and reflects light emitted from the phosphor layer 122 generated by electronic excitation toward the second substrate 121. , The function of improving the brightness of the display screen viewed from the outside of the second substrate 121, and the function of preventing excessive charging and stabilizing the potential of the second panel 120. That is, the anode electrode 124 not only functions as an anode electrode, but also has a function performed by a member known as a metal back film in the field of a cathode ray tube (CRT).
The anode electrode 124 is usually formed using an aluminum thin film. Note that the phosphor layers 122 and 12
2, a black matrix 123 is formed.

As the field emission device, in addition to the Spindt type field emission device, a crown type field emission device in which the electron emission electrode 116A has a crown shape as shown in a schematic view in FIG. 17, and FIG. 19B is a flat type field emission device as shown in the schematic diagram of FIG.
The electron emission electrode as schematically shown in FIG.
2, a raised portion 112A, a concave portion 112B,
A crater-type field emission device composed of the tip portion 112C and an edge-type field emission device as shown in a schematic view in FIG. 20 can also be used. In the field emission device,
Depending on the structure of the field emission element, not only the form in which one electron emission electrode corresponds to one opening, but also the form in which a plurality of electron emission electrodes correspond to one opening, or the form in which a plurality of openings correspond. One electron emission electrode may be in a corresponding form.

FIG. 17A is a schematic partial end view, and FIG. 17B is a schematic perspective view with a part cut away.
The crown-type field emission device shown in FIG. 1 includes a cathode electrode 112 formed on a first substrate 111 and a first substrate 111.
And insulating layer 113 formed on cathode electrode 112
A gate electrode 114 formed on the insulating layer 113;
Opening 1 penetrating gate electrode 114 and insulating layer 113
15 and the cathode electrode 1 located at the bottom of the opening 115.
It is composed of a crown (crown) type electron emission electrode 116A provided on the portion 12. FIG. 17A is a schematic partial end view along line AA in FIG. 17B.

A flat field emission device whose schematic partial cross section is shown in FIG. 18A has a cathode electrode 112 formed on a first substrate 111 made of, for example, glass, a first substrate 111 and a first substrate 111. Insulating layer 113 formed on cathode electrode 112, gate electrode 11 formed on insulating layer 113
4, an opening 115 penetrating the gate electrode 114 and the insulating layer 113, and a flat electron emission electrode 116B provided on a portion of the cathode electrode 112 located at the bottom of the opening 115. Here, the electron emission electrode 116B
Are formed on the striped cathode electrodes 112 extending in the direction perpendicular to the paper of FIG. The gate electrode 114 extends in the left-right direction on the paper of FIG. The cathode electrode 112 and the gate electrode 114 are made of chromium (Cr). The electron emission electrode 116B is specifically formed of a thin layer made of graphite powder. Further, a resistor layer 140 made of SiC is provided between the cathode electrode 112 and the electron emission electrode 116B for stabilizing the operation of the field emission device and making the electron emission characteristics uniform. In the flat field emission device shown in FIG. 18A, the resistor layer 140 and the electron emission electrode 116B are formed over the entire surface of the cathode electrode 112. The invention is not limited to this, and the point is that the electron emission electrode 116 </ b> B is provided at least at the bottom of the opening 115.

In the flat field emission device whose schematic partial end view is shown in FIG.
C is composed of a carbon thin film 150 formed based on the CVD method. The carbon thin film 150 is selectively formed on the metal thin film 151 or the carbon thin film selective growth region composed of the metal thin film.

FIG. 19A is a schematic partial sectional view of the crater type field emission device. In the crater type field emission device, a cathode electrode 112 having a plurality of raised portions 112A for emitting electrons and a concave portion 112B surrounded by each raised portion 112A is provided on a first substrate 111.
Note that FIG. 19B is a schematic perspective view in which the insulating layer 113 and the gate electrode 114 are removed. The shape of the concave portion 112B is not particularly limited, but typically forms a substantially spherical surface.
When the concave portion 112B forms a substantially spherical surface, the raised portion 112A surrounding the concave portion 112B has an annular shape.
B and the raised portion 112A have a shape like a crater or a caldera as a whole. Since the raised portion 112A is a portion that emits electrons, it is particularly preferable that the tip portion 112C is sharp from the viewpoint of increasing the electron emission efficiency. The profile of the tip 112C of the raised portion 112A may have irregular irregularities or may be smooth. The arrangement of the ridges 112A within one pixel may be regular or random. The concave portion 112B may be surrounded by a raised portion 112A continuous along the circumferential direction of the concave portion 112B, or in some cases, the raised portion 1A may be discontinuous along the circumferential direction of the concave portion 112B.
It may be surrounded by 12A.

FIG. 20A is a schematic partial sectional view of the edge type field emission device. The edge type field emission device includes a stripe-shaped cathode electrode 212 formed on a first substrate 111, an insulating layer 113 formed on the first substrate 111 and the cathode electrode 212, Stripe-shaped gate electrode 114 formed on 113
And the opening 115 is formed by the gate electrode 114.
And the insulating layer 113. An edge portion 212A of the cathode electrode 212 is exposed at the bottom of the opening 115. By applying a voltage to the cathode electrode 212 and the gate electrode 114, electrons are emitted from the edge portion 212A of the cathode electrode 212.

Incidentally, as shown in FIG. 20B, the first substrate 111 under the cathode electrode 212 in the opening 115 is formed.
The recessed portion 111A may be formed in the recess. Alternatively,
As shown in a schematic partial cross-sectional view of FIG. 20C, a first gate electrode 114 formed on a first substrate 111 is formed.
A, the first substrate 111 and the first gate electrode 114A
A first insulating layer 113A formed thereon, a cathode electrode 212 formed on the first insulating layer 113A, a second insulating layer 113B formed on the first insulating layer 113A and the cathode electrode 212, And the second gate electrode 114B formed on the second insulating layer 113B. The opening 115 is formed in the second gate electrode 11.
4B, the second insulating layer 113B, the cathode electrode 212, and the first insulating layer 113A.
The edge portion 212A of the cathode electrode 212 is exposed on the side wall of the cathode electrode 212. By applying a voltage to the cathode electrode 212, the first gate electrode 114A, and the second gate electrode 114B, the edge portion 212 of the cathode electrode 212 is applied.
A emits electrons.

Furthermore, the electron emission region can be constituted by an element commonly called a surface conduction electron emission element. This surface-conduction electron-emitting device is composed of, for example, tin oxide (SnO ₂ ), gold (Au), indium oxide (In ₂ O ₃ ) / tin oxide (SnO ₂ ), carbon, palladium oxide (PdO) on a glass substrate. ), A pair of electrodes having a very small area and arranged at a predetermined interval (gap) are formed in a matrix. A carbon thin film is formed on each electrode. Then, a row-direction wiring is connected to one electrode of the pair of electrodes, and a column-direction wiring is connected to the other electrode of the pair of electrodes. By applying a voltage to the pair of electrodes, an electric field is applied to the carbon thin film facing each other across the gap,
Electrons are emitted from the carbon thin film. By causing the electrons to collide with the phosphor layer on the second panel, the phosphor layer is excited and emits light, and a desired image can be obtained.

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 structure and configuration of the flat display device and the display panel described in the embodiment of the invention are exemplifications, can be appropriately changed, and the method of manufacturing the flat display device and the display panel are also exemplifications, It can be changed as appropriate. Furthermore,
Various materials used in these manufacturing are also examples,
It can be changed as appropriate. For example, the exhaust pipe 17 is
It can be attached to the panel 20 or two or more.

[0103]

According to the present invention, since the dummy partition or the protective partition is provided, the internal space of the flat display device is evacuated or the discharge gas is introduced into the internal space when the flat display device is assembled. As a result of being able to regulate the gas flow, the display panel or the first and second panels are less likely to be contaminated. As a result, for example, it is possible to suppress the occurrence of a phenomenon that discharge is unlikely to occur in a discharge cell located in the vicinity of the exhaust pipe, and in some cases, that no discharge occurs, thereby improving the stability of discharge.

In the display panel or the flat display device according to the third or fourth embodiment of the present invention, since the protective partition is formed, the material layer for forming the partition is not required by the sandblast method. When the portion is removed by sandblasting, the processing rate of the portion corresponding to the longitudinal end of the partition and the processing rate of the portion where the outermost partition is to be formed are substantially the same as the other portions, The part of the partition forming material layer to be left is surely left,
A partition having a desired shape can be formed without causing damage to the partition finally obtained. Therefore, processing conditions can be relaxed, and an increase in manufacturing yield can be achieved. When the width of the dummy partition or the protective partition is set to a predetermined width with respect to the width of the partition, the quality of the display panel or the flat display device can be stabilized and the yield can be improved.

[Brief description of the drawings]

FIG. 1 is a schematic plan view of a display panel or a first panel according to Embodiment 1 of the present invention.

FIG. 2 is a schematic plan view of a modification of the display panel or the first panel according to the first embodiment of the present invention.

FIG. 3 is a schematic plan view of a display panel or a first panel according to Embodiment 2 of the present invention.

FIG. 4 is a schematic plan view of a display panel or a first panel according to Embodiment 3 of the present invention.

FIG. 5 is a schematic plan view of a modification of the display panel or the first panel according to the third embodiment of the present invention.

FIG. 6 is a schematic plan view of a display panel or a first panel according to Embodiment 4 of the present invention.

FIG. 7 is a schematic plan view of a modification of the display panel or the first panel according to Embodiment 4 of the present invention.

FIG. 8 is a schematic plan view of another modification of the display panel or the first panel according to Embodiment 4 of the present invention.

FIG. 9 is a schematic plan view of still another modified example of the display panel or the first panel according to Embodiment 4 of the present invention.

FIG. 10 is a schematic plan view of a display panel or a first panel according to Embodiment 5 of the present invention.

FIG. 11 is a partially exploded perspective view conceptually showing a three-electrode type AC driven plasma display device.

FIG. 12 is a schematic plan view and a cross-sectional view conceptually showing a first panel of the plasma display device.

FIG. 13 shows a partition wall or a dummy partition wall by a sand blast method;
FIG. 3 is a schematic partial cross-sectional view of a first substrate and the like for describing a method of forming a protective partition.

FIG. 14 is a schematic diagram showing a state of glow discharge.

FIG. 15 is a schematic diagram showing a state of a glow discharge between a pair of discharge sustaining electrodes.

FIG. 16 is a schematic partial end view of the cold cathode field emission display.

FIG. 17 is a schematic partial end view of a crown-type cold cathode field emission device and a schematic perspective view with a portion cut away.

FIG. 18 is a schematic partial sectional view and a partial end view of a flat type cold cathode field emission device.

FIG. 19 is a schematic partial cross-sectional view of a crater-type cold cathode field emission device, and a schematic perspective view with some components removed.

FIG. 20 is a schematic partial cross-sectional view of an edge-type cold cathode field emission device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... 1st panel (display panel), 11 ... 1st board | substrate, 12 ... address electrode, 13 ... dielectric film, 14 ... partition, 15, 15R, 15G, 15B・
..Phosphor layer, 16 ... through hole, 17 ... exhaust pipe (chip tube), 20 ... second panel, 21 ... second
, 22 ... discharge sustaining electrode, 23 ... bus electrode, 24 ... protective layer, 31 ... effective area, 32 ...
-Invalid area, 32A ... Communication area of invalid area, 41, 4
2, 43... Dummy partition, 51A, 51B, 52A,
52B, 53A, 53B, 54A, 54B: protective partition wall, 60: low melting point glass paste layer, 61: mask layer, 110: first panel, 111: first substrate, 112 , 212 ... cathode electrode, 112A
..Protrusion, 112B ... concave, 112C ... tip, 113, 113A, 113B ... insulating layer, 11
4, 114A, 114B ... gate electrode, 115 ...
.Openings, 116, 116A, 116B, 116C
.Electron emission electrodes, 120... Second panel, 121.
-2nd substrate, 122 ... phosphor layer, 123 ... black matrix, 124 ... anode electrode, 131
... Cathode drive circuit, 132 ... Gate drive circuit, 133 ... Anode drive circuit, 140
... Resistor layer, 150 ... Carbon thin film, 151 ...
Metal particles, 212A ... edge portion

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Hidehiro Kawaguchi, Inventor 6-35, Kita-Shinagawa, Shinagawa-ku, Tokyo Inside Sony Corporation (72) Inventor Jin Jinjiro 7-35, Kita-Shinagawa, Shinagawa-ku, Tokyo Sony Corporation F term (reference) 5C040 FA01 FA04 GB03 GB14 GF12 GF14 GF20 JA17 LA20 MA17 5C094 AA21 AA53 BA31 CA19 FA02

Claims (22)

[Claims] An effective area for displaying an image, comprising a substrate, a partition formed on the substrate and a dummy partition, and an invalid area disposed around the effective area and surrounding the effective area. A display panel for forming a flat display device, wherein a plurality of the stripe-shaped partition walls are formed on a portion of the substrate corresponding to the effective area, wherein the flat display device is assembled at the time of assembling the flat display device. A display panel, wherein a dummy partition is formed in a portion of a substrate located between a communication portion of an invalid region and a valid region that communicates with an internal space of the device. 2. The display panel according to claim 1, wherein the length of the dummy partition is 1 cm or more. 3. An effective area for performing display, comprising a substrate, a partition formed on the substrate and a dummy partition, and an invalid area disposed around the effective area and surrounding the effective area. The effective region has a rectangular shape in which two opposing sides extend in a first direction and the other two opposing sides extend in a second direction, and a stripe portion is formed on a portion of the substrate corresponding to the effective region. A plurality of the partition walls are formed, a display panel for configuring a flat display device, wherein a communicating portion of an invalid area that communicates with an internal space of the flat display device at the time of assembling the flat display device, A first dummy partition wall extending in a first direction is provided on a portion of the substrate that is located outside the corner portion of the rectangular shape and that is located between the communicating portion of the invalid region and the valid region; A second dummy partition extending in the direction Display panel, wherein the dummy barrier ribs are formed consisting of. 4. The length of a side of the rectangular shape extending in a first direction is L ₁ , and the length of a side of the rectangular shape extending in a second direction is L ₂ (where L ₁ ≦ L ₂ ). Then, the length of the first dummy partition and the length of the second dummy partition are respectively L ₁
4. The display panel according to claim 3, wherein the ratio is / 4 or more. 5. A substrate, a partition formed on the substrate, and a first
And an effective area for performing display, and an ineffective area disposed around the effective area and surrounding the effective area. A side extending in the first direction, the other two sides facing each other have a rectangular shape extending in the second direction, and a plurality of stripe-shaped partitions are formed in a portion of the substrate corresponding to the effective area; A display panel for configuring a flat panel display device, wherein a portion of a substrate corresponding to an ineffective area includes a first protective partition extending in a first direction so as to surround a rectangular effective area, and A second protective partition extending in the second direction is formed, and a communication portion of an invalid area that communicates with the internal space of the flat display device at the time of assembling the flat display device is formed outside the rectangular corner portion. Between the communication area of the invalid area and the effective area. The first protective partition and the second protective partition are formed continuously on the portion of the substrate located at the position (1), and the substrate located outside the rectangular corner portion where there is no communicating portion of the invalid area. Wherein a gap is opened between the first protection partition and the second protection partition formed in the portion of the display panel. 6. The number of the first protective partition extending in parallel with each of the two sides of the rectangular shape extending in the first direction is two or more, and each of the two sides of the rectangular shape extending in the second direction. The display panel according to claim 5, wherein the number of the second protection barriers extending in parallel with the number is two or more. 7. The number of first protective partitions extending in parallel with each of the two sides of the rectangular shape extending in the first direction is three to five.
7. The display panel according to claim 6, wherein the number of the second protective barriers extending in parallel with each of the two sides of the rectangular shape extending in the second direction is 3 to 5. 8. When the width of the partition is d, the width of the first protective partition is d ₁ , and the width of the second protective partition is d ₂ , d ≦ d ₁ ≦
Display panel according to claim 5, characterized by satisfying the 2d and d ≦ d ₂ ≦ 2d. 9. A substrate, a partition formed on the substrate, and a first
And an effective area for performing display, and an ineffective area disposed around the effective area and surrounding the effective area. A side extending in the first direction, the other two sides facing each other have a rectangular shape extending in the second direction, and a plurality of stripe-shaped partitions are formed in a portion of the substrate corresponding to the effective area; A display panel for configuring a flat panel display device, wherein a portion of a substrate corresponding to an ineffective area has M first protections extending in a first direction so as to surround a rectangular effective area. Partitions and N pieces extending in the second direction (where N =
M-1 or M) of the second protective partition is formed, and the n-th (where 1 ≦ n ≦ M−
There is a gap between the end of the first protection partition of 1) and the n-th second protection partition, and the n-th second protection partition is on an extension of the n-th first protection partition. , A gap exists between the end of the n-th second protection partition and the (n + 1) -th first protection partition, and the n-th A display panel, wherein an (n + 1) -th first protection partition is present on an extension of the second protection partition. 10. The display panel according to claim 9, wherein the value of M is 3 or more and 5 or less. 11. The width of the partition is d, and the width of the first protective partition is d.
₁ , when the width of the second protective partition is d ₂ , d ≦ d ₁ ≦ 2
The display panel according to claim 9, wherein d and d ≦ d ₂ ≦ 2d are satisfied. 12. A first panel comprising: a first substrate; a partition formed on the first substrate; and a dummy partition.
And (2) a second panel provided with a second substrate, having an effective area for performing display, and an ineffective area arranged around the effective area and surrounding the effective area. A plurality of stripe-shaped partition walls are formed in a region of the first substrate corresponding to the region, and the outer edge of the first substrate and the outer edge of the second substrate are joined. A dummy partition is formed in a portion of the first substrate located between a communication portion of an invalid area and an effective area that communicates with the internal space of the flat display device when the flat display device is assembled. A flat display device characterized by the above-mentioned. 13. The flat display device according to claim 12, wherein the length of the Mie partition is 1 cm or more. 14. A first panel comprising: a first substrate; a partition formed on the first substrate; and a dummy partition.
And (2) a second panel including a second substrate, comprising: an effective area for performing display; and an invalid area disposed around the effective area and surrounding the effective area. The effective area has a rectangular shape in which two opposing sides extend in a first direction, and the other two opposing sides extend in a second direction. A stripe on a region of the first substrate corresponding to the effective area A plurality of said partition walls are formed, and an outer edge portion of a first substrate and an outer edge portion of a second substrate are joined to each other. A communication portion of the invalid region communicating with the internal space is located outside the corner of the rectangular shape, and a portion of the first substrate located between the communication portion of the invalid region and the valid region has a first portion. And a first dummy partition extending in the second direction and extending in the second direction. A flat display device, wherein a dummy partition wall composed of a second dummy partition wall continuous with a wall is formed. 15. The length of the side of the rectangular shape extending in the first direction is L ₁ , and the length of the side of the rectangular shape extending in the second direction is L ₂ (where L ₁ ≦ L ₂ ). Then, the length of the first dummy partition and the length of the second dummy partition are respectively L
A display device according to claim 14, characterized in that _1/4 or more. 16. A first panel comprising a first substrate, a partition formed on the first substrate, a first protective partition and a second protective partition, and (2) A second panel provided with a second substrate, comprising: an effective area for performing display; and an ineffective area disposed around the effective area and surrounding the effective area. Two sides extend in the first direction, and the other two opposite sides have a rectangular shape extending in the second direction. A plurality of stripe-shaped regions are formed in a region of the first substrate corresponding to an effective region. A flat display device in which a partition is formed, and an outer edge of a first substrate and an outer edge of a second substrate are joined, and a portion of the first substrate corresponding to an ineffective area has a rectangular shape. A first protection partition extending in a first direction so as to surround the effective area; and a second protection partition extending in a second direction. A protective partition is formed, and a communicating portion of an invalid area that communicates with the internal space of the flat display device at the time of assembling the flat display device is located outside the rectangular corner portion, and the communicating portion of the invalid region is A first protection partition and a second protection partition are continuously formed in a portion of the first substrate located between the first region and the effective region; Wherein a gap is provided between a first protection partition and a second protection partition formed on a portion of the first substrate located outside the corner portion of the flat display device. 17. The number of the first protective partition extending in parallel with each of the two sides of the rectangular shape extending in the first direction is two or more, and each of the two sides of the rectangular shape extending in the second direction. 17. The flat display device according to claim 16, wherein the number of the second protective barriers extending in parallel with the number is two or more. 18. The number of the first protective partition extending in parallel with each of the two sides of the rectangular shape extending in the first direction is 3 to 5, and the number of the first protective partitions extending in the second direction is two to five. 18. The flat panel display according to claim 17, wherein the number of the second protection barriers extending in parallel with each other is three to five. 19. The width of the partition is d, and the width of the first protective partition is d.
₁ , when the width of the second protective partition is d ₂ , d ≦ d ₁ ≦ 2
17. The flat display device according to claim 16, wherein d and d ≦ d ₂ ≦ 2d are satisfied. 20. (1) a first panel including a first substrate, a partition formed on the first substrate, a first protective partition and a second protective partition, and (2) A second panel provided with a second substrate, comprising: an effective area for performing display; and an ineffective area disposed around the effective area and surrounding the effective area. Two sides extend in the first direction, and the other two opposite sides have a rectangular shape extending in the second direction. A plurality of stripe-shaped regions are formed in a region of the first substrate corresponding to an effective region. A flat display device in which a partition wall is formed, and an outer edge of a first substrate is joined to an outer edge of a second substrate, wherein the first substrate corresponding to the invalid area has a rectangular effective area. And M first protection partitions extending in the first direction and N numbers of second protection partitions extending in the second direction. However, N =
M-1 or M) of the second protective partition is formed, and the n-th (where 1 ≦ n ≦ M−
There is a gap between the end of the first protection partition of 1) and the n-th second protection partition, and the n-th second protection partition is on an extension of the n-th first protection partition. , A gap exists between the end of the n-th second protection partition and the (n + 1) -th first protection partition, and the n-th A flat display device, wherein an (n + 1) -th first protection partition is present on an extension of the second protection partition. 21. The flat panel display according to claim 20, wherein the value of M is 3 or more and 5 or less. 22. The width of the partition is d, and the width of the first protective partition is d.
₁ , when the width of the second protective partition is d ₂ , d ≦ d ₁ ≦ 2
21. The flat panel display according to claim 20, wherein d and d ≦ d ₂ ≦ 2d are satisfied.