JPH09167565A - Surface discharge type plasma display panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress the enlargement of unnecessary discharge and stabilize display operation by localizing a discharge space every unit luminescent region, and limiting a path through which discharge is enlarged to the adjacent unit luminescent region. SOLUTION: A pair of sustained electrodes X, Y corresponding to one line of display is arranged on the inner surface of a glass substrate 1 on the display surface side of glass substrates 1, 2 facing on both sides of a discharge space. The electrodes X, Y are constituted with a transparent conductive film 4 and a metal film 3 for supporting the transparent conductive film 4, the metal film 3 is arranged in a belt shape on the inner surface of the glass substrate 1, and the transparent conductive film 4 is separately arranged on the discharge space 7 side through a dielectric layer 5. A stripe-shaped partition wall 10 extending in the direction perpendicularly crossing to the sustained electrodes X, Y is arranged on the inner surface of the glass substrate 2 on the back side, and by the partition wall 10, the discharge space 7 is partitioned every unit luminescent region in the extended direction of the sustained electrodes X, Y.

Description

Detailed Description of the Invention

[0002]

[0001]

[0003]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface discharge type plasma display panel in which interference of discharges in adjacent discharge cells is improved.

[0004]

[0002]

[0005]

2. Description of the Related Art As a dot matrix type flat display device, for example, a plasma display panel (PDP) is known. PDPs are widely used as display devices for personal computers, word processors, etc., and are capable of high-speed display and easy realization of large screens.
It is expected as a large flat display device of 0 inches or more.

[0006]

FIG. 3 shows a surface discharge type PDP having an AC drive type three-electrode structure, in which the inner surface of the glass substrate 1 on the display surface side of a pair of glass substrates 1 and 2 facing each other through a discharge space 7. Is provided with a pair of sustain electrodes (sustain electrodes) X and Y disposed adjacent to each other in parallel with each other, a dielectric layer 5 that covers the sustain electrodes X and Y, and a protective layer 6 made of MgO that covers the dielectric layer 5. Each of the sustain electrodes X and Y is composed of a wide band-shaped transparent conductive film 4 and a narrow metal film 3 stacked to complement the conductivity.

[0007]

On the other hand, partition walls 10, which are provided on the inner surface of the rear glass substrate 2 in a direction orthogonal to the sustain electrodes X and Y, partition the discharge space 7 into unit light emitting regions, and each partition wall 10.
An address electrode A provided in a direction orthogonal to the sustain electrodes X and Y, and a phosphor layer 8 of a predetermined emission color are provided on the glass substrate between them. Here, the discharge space 7 is filled with a discharge gas in which neon is mixed with a small amount of xenon.

[0008]

In displaying such a PDP, for example, a drive voltage exceeding a discharge starting voltage is applied to the sustain electrodes X and Y. As a result, surface discharge is generated in the surface direction of the dielectric layer 5, and predetermined wall charges are accumulated on the surface of the dielectric layer,
Discharge stops. After that, every time a sustain pulse having a polarity opposite to the wall charges is applied to the sustain electrodes X and Y alternately, surface discharge occurs, and the ultraviolet rays generated at this time excite the phosphor layer 8 to emit light.

[0009]

[0006]

[0010]

By the way, the partition wall 10 is
It is formed by applying the low-melting-point glass paste several times in layers and baking it. However, variations in height occur in the partition walls 10 due to uneven application of the paste, sagging during baking, and the like. Then, large and small gaps are formed between the partition 10 and the sustain electrode. Therefore, when the sustain electrode is composed of the wide band-shaped transparent conductive film and the narrow metal film as described above, the discharge generated in the discharge gap is not only generated on the metal film facing the barrier ribs 10. There is a problem that it spreads to the adjacent unit light emitting region (discharge cell) through the transparent conductive film. The present invention has been made in view of the above problems, and it is an object of the present invention to reliably prevent discharge interference and stabilize display.

[0011]

[0007]

[0012]

A PDP according to a first aspect of the present invention is a PDP having a pair of first and second substrates facing each other across a discharge space, and a dielectric provided on an inner surface of the first substrate. A pair of sustain electrodes spaced apart by a discharge gap in the layer, an address electrode arranged on the inner surface of the second substrate so as to intersect the sustain electrodes, and the discharge space divided into unit light emitting regions. In the surface discharge type plasma display panel having stripe-shaped barrier ribs, the sustain electrodes are provided with facing protrusions for localizing surface discharge in each of the unit light emitting regions, and the discharge gap. The edge portion on the opposite side is formed of a connecting portion that is connected to the protruding portion of the sustain electrode in the adjacent unit light emitting region.

[0013]

In the PDP according to the invention of claim 2, the first substrate is a substrate on the display surface side, and the sustain electrode is composed of a transparent conductive film and a metal film which complements the conductivity.
The protruding portion of the sustain electrode is associated with the transparent conductive film.

In the PDP according to the invention of claim 3, the metal film of the sustain electrode is arranged on the first substrate side, and the transparent conductive film is arranged on the discharge space side apart from the metal film, The metal film and the transparent conductive film are electrically connected via a through hole.

In the PDP according to the fourth aspect of the present invention, the surface of the dielectric layer on the connecting portion of the sustain electrode is projected with respect to the other portion, and the protruding portion and the partition wall are in contact with each other.

[0016]

[0009]

[0017]

Since the sustain electrodes X and Y are configured so as to be localized in each unit light emitting region, it is possible to reliably prevent unnecessary spread of discharge in the extending direction of the sustain electrodes.

[0018]

[0010]

[0019]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a surface discharge type P according to an embodiment of the present invention.
A sectional view and a plan view of DP are shown. In FIG. 1, a pair of sustain electrodes X and Y corresponding to one line of display is arranged on the inner surface of the glass substrate 1 on the display surface side among the glass substrates 1 and 2 facing each other across the discharge space. The sustain electrodes X and Y are composed of a transparent conductive film 4 and a narrow metal film 3 that complements the conductivity thereof, the metal film 3 is arranged in a strip shape on the inner surface of the glass substrate 1, and the transparent conductive film 4 is a dielectric film. It is arranged so as to be separated from the discharge space 7 via the body layer 5. Also,
The transparent conductive film 4 has a discharge gap 13 for each unit light emitting region 12.
A pair of individual island-shaped electrodes that face each other via the through hole 9 and are electrically connected to the metal film 3 through the through hole 9 at the edge opposite to the discharge gap 13. That is, the sustain electrodes X and Y are the island-shaped electrodes of the unit light-emitting region 12 that are adjacent to the projecting portion corresponding to the island-shaped electrode (transparent conductive film) for each unit light-emitting region 12 on the opposite side to the discharge gap. And a connecting portion 11 that is associated with the metal film 3 disposed between and.

A protective layer 6 made of MgO (magnesium oxide) is formed on the dielectric layer 5 covering the sustain electrodes X and Y.
Are laminated.

[0021]

On the other hand, on the inner surface of the glass substrate 2 on the back side, stripe-shaped partition walls 10 extending in the direction orthogonal to the sustain electrodes X and Y are provided, whereby the discharge space 7 is formed.
Is a unit light emitting region 12 in the extension direction of the sustain electrodes X and Y.
It is divided for each. The address electrodes A are arranged between the partition walls 10, and the phosphor layer 8 is provided thereon.

[0022]

In the PDP having the above-described structure, the discharge within the unit light emitting region 12 is localized, and the route through which the discharge is transmitted to the adjacent unit light emitting region (discharge cell) is the connecting portion of the sustain electrodes, that is, Since the width is limited to the narrow metal film 3, the spread of the discharge to the adjacent discharge cells is suppressed, and the display can be stabilized. Further, the metal film 3 is arranged below the transparent conductive film 4, that is, on the glass substrate 1 side,
Since the dielectric layer on the metal film 3 is thicker than the dielectric layer on the transparent conductive film 4, it is possible to surely prevent unnecessary discharge from spreading along the extension direction on the metal film 3.

[0023]

In the above-mentioned embodiment, the transparent conductive film (transparent electrode) 4 is an individual island-shaped electrode for each unit light emitting region 12. However, as shown in FIG. The transparent conductive films in the unit light emitting regions adjacent to each other may be connected to each other. In this case, the transparent conductive film 4 is directly laminated on the metal film 3, and the surface of the dielectric layer on the connecting portion 11 (metal film 3) of the sustain electrodes X and Y is projected more than other parts, and the projection is made. A part may be brought into contact with the partition wall 10 and pressed without a gap. This allows
As in the above-described embodiment, it is possible to reliably prevent unnecessary spread of discharge along the extension direction of the metal film 3.

[0024]

In the above-mentioned embodiment, the PDP called the reflection type in which the phosphor layer 8 is provided on the glass substrate 2 on the back side is exemplified, but the phosphor layer 8 is placed on the glass substrate 1 on the display surface side. The present invention can also be applied to a PDP provided as a transmission type. In this case, since the sustain electrode is provided on the glass substrate 2 on the back side, it is composed of only a metal film. Further, the metal film is provided with a protruding portion facing each unit light emitting region, the surface of the dielectric layer at the edge portion on the side opposite to the discharge gap is protruded from other portions, and the protruding portion and the partition wall are brought into contact with each other. Thus, similarly to the above-described embodiment, it is possible to suppress the unnecessary spread of the discharge along the extension direction of the metal film.

[0025]

[0015]

[0026]

According to the present invention, the discharge is localized in each unit light emitting region, and the path through which the discharge spreads to the adjacent unit light emitting regions is limited, so that it is unnecessary along the extension direction of the sustain electrode. It is possible to suppress the spread of various discharges, and thus to stabilize the display operation.

[Brief description of the drawings]

FIG. 1 is a diagram showing a structure of a surface discharge type PDP according to an embodiment of the present invention.

FIG. 2 is a view showing the structure of a surface discharge type PDP according to another embodiment of the present invention.

FIG. 3 is a diagram showing a structure of a conventional surface discharge PDP.

[Explanation of symbols]

 1 ・ ・ ・ Glass substrate on display side 2 ・ ・ ・ Glass substrate on back side 3 ・ ・ ・ Metal film 4 ・ ・ ・ Transparent conductive film 5 ・ ・ ・ ・ ・ Dielectric layer 10 ... Partition wall

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] December 16, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Detailed description of the invention

[Correction method] Change

[Correction contents]

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface discharge type plasma display panel in which interference of discharges in adjacent discharge cells is improved.

[0002]

2. Description of the Related Art As a dot matrix type flat display device, for example, a plasma display panel (PDP) is known. PDPs are widely used as display devices for personal computers, word processors, etc., and are capable of high-speed display and easy realization of large screens.
It is expected as a large flat display device of 0 inches or more.

FIG. 3 shows a surface discharge type PDP having an AC drive type three-electrode structure, in which the inner surface of the glass substrate 1 on the display surface side of a pair of glass substrates 1 and 2 facing each other through a discharge space 7. Is provided with a pair of sustain electrodes (sustain electrodes) X and Y disposed adjacent to each other in parallel with each other, a dielectric layer 5 that covers the sustain electrodes X and Y, and a protective layer 6 made of MgO that covers the dielectric layer 5. Each of the sustain electrodes X and Y is composed of a wide band-shaped transparent conductive film 4 and a narrow metal film 3 stacked to complement the conductivity.

On the other hand, partition walls 10, which are provided on the inner surface of the rear glass substrate 2 in a direction orthogonal to the sustain electrodes X and Y, partition the discharge space 7 into unit light emitting regions, and each partition wall 10.
An address electrode A provided in a direction orthogonal to the sustain electrodes X and Y, and a phosphor layer 8 of a predetermined emission color are provided on the glass substrate between them. Here, the discharge space 7 is filled with a discharge gas in which neon is mixed with a small amount of xenon.

In displaying such a PDP, for example, a drive voltage exceeding a discharge starting voltage is applied to the sustain electrodes X and Y. As a result, surface discharge is generated in the surface direction of the dielectric layer 5, and predetermined wall charges are accumulated on the surface of the dielectric layer,
Discharge stops. After that, every time a sustain pulse having a polarity opposite to the wall charges is applied to the sustain electrodes X and Y alternately, surface discharge occurs, and the ultraviolet rays generated at this time excite the phosphor layer 8 to emit light.

[0006]

By the way, the partition wall 10 is
It is formed by applying the low-melting-point glass paste several times in layers and baking it. However, variations in height occur in the partition walls 10 due to uneven application of the paste, sagging during baking, and the like. Then, large and small gaps are formed between the partition 10 and the sustain electrode. Therefore, when the sustain electrode is composed of the wide band-shaped transparent conductive film and the narrow metal film as described above, the discharge generated in the discharge gap is not only generated on the metal film facing the barrier ribs 10. There is a problem that it spreads to the adjacent unit light emitting region (discharge cell) through the transparent conductive film. The present invention has been made in view of the above problems, and it is an object of the present invention to reliably prevent discharge interference and stabilize display.

[0007]

A PDP according to a first aspect of the present invention is a PDP having a pair of first and second substrates facing each other across a discharge space, and a dielectric provided on an inner surface of the first substrate. A pair of sustain electrodes spaced apart by a discharge gap in the layer, an address electrode arranged on the inner surface of the second substrate so as to intersect the sustain electrodes, and the discharge space divided into unit light emitting regions. In the surface discharge type plasma display panel having stripe-shaped barrier ribs, the sustain electrodes are provided with facing protrusions for localizing surface discharge in each of the unit light emitting regions, and the discharge gap. The edge portion on the opposite side is formed of a connecting portion that is connected to the protruding portion of the sustain electrode in the adjacent unit light emitting region.

In the PDP according to the invention of claim 2, the first substrate is a substrate on the display surface side, and the sustain electrode is composed of a transparent conductive film and a metal film which complements the conductivity.
The protruding portion of the sustain electrode is associated with the transparent conductive film. In the PDP according to the invention of claim 3, the sustain electrode metal film is disposed on the first substrate side,
The transparent conductive film is disposed on the discharge space side so as to be separated from the metal film, and the metal film and the transparent conductive film are electrically connected to each other through a through hole. In the PDP according to the invention of claim 4, the surface of the dielectric layer on the connecting portion of the sustain electrode is projected to the other portion, and the protruding portion and the partition wall are in contact with each other.

[0009]

Since the sustain electrodes X and Y are configured so as to be localized in each unit light emitting region, it is possible to reliably prevent unnecessary spread of discharge in the extending direction of the sustain electrodes.

[0010]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a surface discharge type P according to an embodiment of the present invention.
A sectional view and a plan view of DP are shown. In FIG. 1, a pair of sustain electrodes X and Y corresponding to one line of display is arranged on the inner surface of the glass substrate 1 on the display surface side among the glass substrates 1 and 2 facing each other across the discharge space. The sustain electrodes X and Y are composed of a transparent conductive film 4 and a narrow metal film 3 that complements the conductivity thereof, the metal film 3 is arranged in a strip shape on the inner surface of the glass substrate 1, and the transparent conductive film 4 is a dielectric film. It is arranged so as to be separated from the discharge space 7 via the body layer 5. Also,
The transparent conductive film 4 has a discharge gap 13 for each unit light emitting region 12.
A pair of individual island-shaped electrodes that face each other are formed, and are electrically connected to the metal film 3 via the through hole 9 at the edge portion on the side opposite to the discharge gap 13. That is, the sustain electrodes X and Y are the island-shaped electrodes of the unit light-emitting region 12 that are adjacent on the opposite side of the discharge gap from the projecting portion corresponding to the island-shaped electrode (transparent conductive film) for each unit light-emitting region 12. And a connecting portion 11 that is associated with the metal film 3 disposed between and. Sustain electrode X,
A protective layer 6 made of MgO (magnesium oxide) is laminated on the dielectric layer 5 covering Y.

On the other hand, on the inner surface of the glass substrate 2 on the back side, stripe-shaped partition walls 10 extending in the direction orthogonal to the sustain electrodes X and Y are provided, whereby the discharge space 7 is formed.
Is a unit light emitting region 12 in the extension direction of the sustain electrodes X and Y.
It is divided for each. The address electrodes A are arranged between the partition walls 10, and the phosphor layer 8 is provided thereon.

In the PDP having the above-described structure, the discharge within the unit light emitting region 12 is localized, and the route through which the discharge is transmitted to the adjacent unit light emitting region (discharge cell) is the connecting portion of the sustain electrodes, that is, Since the width is limited to the narrow metal film 3, the spread of the discharge to the adjacent discharge cells is suppressed, and the display can be stabilized. Further, the metal film 3 is arranged below the transparent conductive film 4, that is, on the glass substrate 1 side,
Since the dielectric layer on the metal film 3 is thicker than the dielectric layer on the transparent conductive film 4, it is possible to surely prevent unnecessary discharge from spreading along the extension direction on the metal film 3.

In the above-mentioned embodiment, the transparent conductive film (transparent electrode) 4 is an individual island-shaped electrode for each unit light emitting region 12. However, as shown in FIG. The transparent conductive films in the unit light emitting regions adjacent to each other may be connected to each other. In this case, the transparent conductive film 4 is directly laminated on the metal film 3, and the surface of the dielectric layer on the connecting portion 11 (metal film 3) of the sustain electrodes X and Y is projected more than other parts, and the projection is made. A part may be brought into contact with the partition wall 10 and pressed without a gap. This allows
As in the above-described embodiment, it is possible to reliably prevent unnecessary spread of discharge along the extension direction of the metal film 3.

In the above-mentioned embodiment, the PDP called the reflection type in which the phosphor layer 8 is provided on the glass substrate 2 on the back side is exemplified, but the phosphor layer 8 is placed on the glass substrate 1 on the display surface side. The present invention can also be applied to a PDP provided as a transmission type. In this case, since the sustain electrode is provided on the glass substrate 2 on the back side, it is composed of only a metal film. Further, the metal film is provided with a protruding portion facing each unit light emitting region, the surface of the dielectric layer at the edge portion on the side opposite to the discharge gap is protruded from other portions, and the protruding portion and the partition wall are brought into contact with each other. Thus, similarly to the above-described embodiment, it is possible to suppress the unnecessary spread of the discharge along the extension direction of the metal film.

[0015]

According to the present invention, the discharge is localized in each unit light emitting region, and the path through which the discharge spreads to the adjacent unit light emitting regions is limited, so that it is unnecessary along the extension direction of the sustain electrode. It is possible to suppress the spread of various discharges, and thus to stabilize the display operation.

Claims (4)

[Claims] 1. A pair of first and second substrates facing each other across a discharge space, and a pair of sustains disposed in a dielectric layer provided on an inner surface of the first substrate with a discharge gap therebetween. A surface discharge type plasma display comprising electrodes, address electrodes arranged on the inner surface of the second substrate so as to intersect the sustain electrodes, and stripe-shaped barrier ribs partitioning the discharge space into unit light emitting regions. In the panel, the sustain electrode is a sustain electrode in a unit light emitting region that is adjacent to an opposing protrusion for localizing a surface discharge in each of the unit light emitting regions and an edge opposite to the discharge gap. 2. A surface discharge type plasma display panel, comprising a connecting part connected to the protruding part of the. 2. The first substrate is a substrate on the display surface side, the sustain electrode is composed of a transparent conductive film and a metal film that complements the conductivity, and the protrusion of the sustain electrode is the transparent conductive film. The surface discharge type plasma display panel according to claim 1, which is associated with. 3. The metal film of the sustain electrode is arranged on the side of the first substrate, the transparent conductive film is arranged on the side of the discharge space while being separated from the metal film, and the metal film and the transparent conductive film are formed. 3. The surface discharge type plasma display panel according to claim 2, wherein said are electrically connected via a through hole. 4. The surface of the dielectric layer on the connecting portion of the sustain electrode protrudes with respect to another portion, and the protruding portion and the partition wall are in contact with each other. 2. The surface discharge type plasma display panel described in 2. [0001]