JPH09129137A - Plasma display panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lower discharge retaining voltage and discharge starting voltage of light emitting picture element regions having a narrow discharge gap and carry out discharging easily by arranging the regions in peripheries of discharge gas introducing holes. SOLUTION: Light-emitting picture element regions with a narrow discharge gap 22 of a plasma display panel, which has a plurality of pairs of line electrodes extended in parallel to one another in horizontal direction at a discharge gap 23 and a plurality of row electrodes kept from the pair of line electrodes on the opposite to them and extended in vertical direction to form the light-emitting picture element regions at the crossing points of the line electrodes and the row electrodes, are arranged in peripheries of discharge gas introducing holes and the display panel.

Description

Detailed Description of the Invention

[0002]

[0001]

[0003]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display panel (hereinafter referred to as PDP) of a plasma display device, and more particularly to improvement of a sustain electrode.

[0004]

[0002]

[0005]

2. Description of the Related Art In recent years, practical use of a plasma display panel (PDP) as a large and thin color display device is expected.

As is well known, the PDP is provided with a pair of electrodes arranged inside each other so as to be opposed to each other with an internal space (discharge space) interposed therebetween, and a discharge cell is selectively formed by forming a discharge cell at the intersection of each electrode. It is configured to emit light.

In such a PDP, a plurality of sustain electrode pairs are formed on a glass substrate on the display surface side, and a dielectric layer and Mg are further formed.
O layers are sequentially formed, and a plurality of address electrodes are formed in a direction intersecting the sustain electrode pairs on the glass substrate on one back side,
Further, a rib for partitioning the internal space and a phosphor layer are sequentially formed, and after a pair of glass substrates are arranged to face each other, the periphery is sealed with sealing glass.

Then, the inner space is heated and evacuated through a vent hole provided in one of the glass substrates, and then the discharge gas is filled in to assemble.

Conventionally, the vent holes are usually provided so as to avoid the discharge light emitting regions (discharge cell regions) at the corners of the glass substrate. Further, the discharge gaps of the respective discharge cells are arranged at regular intervals.

[0010]

[0003]

[0011]

If the PDP is left undisplayed for a long time, the discharge start voltage rises, which makes it difficult to discharge. Also, PDP
When the discharge gas is introduced in the manufacturing process of 1), impurities such as water are mixed and adhere to the MgO layer of the cell near the discharge gas introduction hole, and the display operation becomes unstable. The present invention has been made in view of the above circumstances, and an object thereof is to provide a PDP capable of performing stable display operation.

[0012]

[0004]

[0013]

SUMMARY OF THE INVENTION In a plasma display panel, the present invention provides a plurality of row electrode pairs extending in parallel to each other in the horizontal direction and separated by a discharge gap, and spaced from the row electrode pair. A plurality of column electrodes facing each other and extending in the vertical direction to form a light emitting pixel area at each intersection with a row electrode pair are formed, and the discharge gap is configured to coexist with a narrow light emitting pixel area. The light emitting pixel region having a narrow gap is arranged near the discharge gas introducing hole.

[0014]

[0005]

[0015]

By mixing the light emitting pixel area having a narrow discharge gap, the discharge sustaining voltage and the discharge starting voltage in that area are lowered to facilitate discharge, and the discharge increases the space charge in the discharge space. The discharge starting voltage and the discharge sustaining voltage of the light emitting pixel region are also lowered, and the discharge is facilitated.

[0016]

[0006]

[0017]

Embodiments Embodiments will be described below with reference to the drawings.

In the surface discharge type PDP shown in FIG. 1, the inner surface of the front glass substrate 1 (rear glass substrate 2) which is the display surface.
On the surface opposite to (1), sustain electrodes composed of a plurality of transparent transparent conductive films 3 and metal films 4 are formed in parallel with each other. A pair of sustain electrodes facing each other constitutes a sustain electrode pair, and a discharge gap that forms the center of each light emitting region is formed in the facing portion. Since the transparent conductive film 3 has a relatively high electric resistance, the metal film 4 is It is formed along the longitudinal direction. The metal film 4 has an area smaller than the area of the transparent conductive film 3 on each of the sustain electrode pairs, and is provided on the edge of the sustain electrode pair on the opposite side of the discharge gap. Further, a dielectric layer 5 made of low melting point glass is formed on the inner surface side of the metal film 4, and is connected to the discharge space 7 via the MgO layer 6.

[0019]

On the other hand, an address electrode 8 is formed on the inner surface of the rear glass substrate 2 on the opposite side, and a phosphor layer 9 is formed so as to cover the address electrode 8. The address electrode 8 and the metal film 4 are arranged so as to cross each other, and a rib 10 for partitioning the discharge cell is provided. Front glass substrate 1
The periphery of the discharge space 7 facing the rear glass substrate 2 is sealed with sealing glass (not shown). Further, ventilation holes (not shown) are provided in the corners of the rear glass substrate 2,
It is used to fill the discharge space with a discharge gas through a glass tube.

The glass tube is sealed after introducing the discharge gas into the discharge space.

[0021]

FIG. 2 is a partial view showing the sustain electrode pair 21 of the present invention, and a part of the discharge gap is narrowed as shown in the drawing. Further, FIG. 3 shows a case where the gap shape of the sustain electrode pair is a straight type.

Impurities such as water are likely to remain near the discharge gas introducing hole, and it is effective to dispose a discharge cell having a narrow discharge gap in the vicinity thereof.

[0023]

[0009]

[0024]

As described above, by mixing the light emitting pixel regions having a narrow discharge gap, the discharge sustaining voltage and the discharge starting voltage in that region are lowered, and the discharge is facilitated. Then, the space charges in the discharge space increase due to the discharge, so that the discharge starting voltage and the discharge sustaining voltage of the other light emitting pixel regions in the vicinity also decrease, and therefore discharge is facilitated, and stable display operation is possible.

According to the present invention, it is possible to stably light a PDP that has been left for a long time, and in the production process, the discharge start / sustain voltage changes, and the part where the panel becomes non-uniform is lit uniformly. It becomes possible.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a structure of a PDP according to the present invention.

FIG. 2 is a cross-sectional view showing a sustain electrode pair of a PDP according to the present invention.

FIG. 3 is a cross-sectional view showing a sustain electrode pair of a PDP according to another embodiment of the present invention.

[Explanation of symbols]

 1 front glass substrate 2 back glass substrate 3 transparent conductive film 4 metal film 5 dielectric layer 6 MgO layer 7 ・ ・ ・ Discharge space 8 ・ ・ ・ Address electrode 9 ・ ・ ・ Phosphor 10 ・ ・ ・ Rib 21 ・ ・ ・ Rib 22 ・ ・ ・ Narrowed gap 23・ ・ ・ ・ ・ Gap 24 ・ ・ ・ ・ ・ Sustaining electrode pair 31 ・ ・ ・ ・ ・ Rib 32 ・ ・ ・ ・ ・ Narrowed gap 33 ・ ・ ・ ・ ・ Gap

[Procedure amendment]

[Submission date] November 8, 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 plasma display panel (hereinafter referred to as PDP) of a plasma display device, and more particularly to improvement of a sustain electrode.

[0002]

2. Description of the Related Art In recent years, practical use of a plasma display panel (PDP) as a large and thin color display device is expected. As is well known, the PDP is provided with a pair of electrodes which are disposed inside each other and are opposed to each other with an internal space (discharge space) interposed therebetween, and discharge cells are formed at the intersections of the electrodes to selectively emit light. It is configured. In such a PDP, a plurality of sustain electrode pairs are formed on a glass substrate on the display surface side, and then a dielectric layer and a MgO layer are sequentially formed.
On the other hand, a plurality of address electrodes are formed on the glass substrate on the back side in a direction intersecting with the sustain electrode pair, ribs that partition the internal space, phosphor layers are sequentially formed, and after a pair of glass substrates are arranged facing each other, The perimeter is sealed with sealing glass. Then, the inner space is heated and exhausted through a ventilation hole provided in one of the glass substrates, and then the discharge gas is filled in to assemble. Conventionally, the vent holes are usually provided so as to avoid the discharge light emitting region (discharge cell region) at the corner of the glass substrate. Further, the discharge gaps of the respective discharge cells are arranged at regular intervals.

[0003]

If the PDP is left undisplayed for a long time, the discharge start voltage rises, which makes it difficult to discharge. Also, PDP
When the discharge gas is introduced in the manufacturing process of 1), impurities such as water are mixed and adhere to the MgO layer of the cell near the discharge gas introduction hole, and the display operation becomes unstable. The present invention has been made in view of the above circumstances, and an object thereof is to provide a PDP capable of performing stable display operation.

[0004]

According to the present invention, in a plasma display panel, a plurality of row electrode pairs that extend in parallel to each other in the horizontal direction and are separated by a discharge gap, and are separated from the row electrode pair. A plurality of column electrodes facing each other, extending in the vertical direction, and forming a light emitting pixel region at each intersection with a row electrode pair, are configured so that the discharge gap is a mixture of narrow light emitting pixel regions. The light emitting pixel region having a narrow gap is arranged near the discharge gas introducing hole.

[0005]

By mixing the light emitting pixel areas having a narrow discharge gap, the discharge sustaining voltage and the discharge starting voltage of the area are lowered, and the discharge is facilitated. The discharge increases the space charge in the discharge space, so that the other nearby The discharge starting voltage and the discharge sustaining voltage of the light emitting pixel region are also lowered, and the discharge is facilitated.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments will be described below with reference to the drawings.
In the surface discharge PDP shown in FIG. 1, a plurality of transparent transparent conductive films 3 and metal films 4 are formed on the inner surface of the front glass substrate 1 (the surface facing the rear glass substrate 2) which is the display surface. The sustain electrodes are formed parallel to each other. A pair of sustain electrodes facing each other constitutes a sustain electrode pair, and a discharge gap that forms the center of each light emitting region is formed in the facing portion. Since the transparent conductive film 3 has a relatively high electric resistance, the metal film 4 is It is formed along the longitudinal direction. The metal film 4 is formed on each of the sustain electrode pairs by the transparent conductive film 3
Is smaller than the area of the discharge electrode and is provided on the edge of the sustain electrode pair opposite to the discharge gap. Further, a dielectric layer 5 made of low melting point glass is formed on the inner surface side of the metal film 4, and is connected to the discharge space 7 via the MgO layer 6.

On the other hand, an address electrode 8 is formed on the inner surface side of the rear glass substrate 2 on the opposite side, and a phosphor layer 9 is formed so as to cover the address electrode 8. The address electrode 8 and the metal film 4 are arranged so as to cross each other, and a rib 10 for partitioning the discharge cell is provided. Front glass substrate 1
The periphery of the discharge space 7 facing the rear glass substrate 2 is sealed with sealing glass (not shown). Further, ventilation holes (not shown) are provided in the corners of the rear glass substrate 2,
It is used to fill the discharge space with a discharge gas through a glass tube. The glass tube is sealed after introducing the discharge gas into the discharge space.

FIG. 2 is a partial view showing the sustain electrode pair 21 of the present invention, and a part of the discharge gap is narrowed as shown in the drawing. Further, FIG. 3 shows a case where the gap shape of the sustain electrode pair is a straight type. Impurities such as water are likely to remain in the vicinity of the discharge gas introduction hole, and it is effective to dispose a discharge cell having a narrow discharge gap in the vicinity thereof.

[0009]

As described above, by mixing the light emitting pixel regions having a narrow discharge gap, the discharge sustaining voltage and the discharge starting voltage in that region are lowered, and the discharge is facilitated. Then, the space charges in the discharge space increase due to the discharge, so that the discharge starting voltage and the discharge sustaining voltage of the other light emitting pixel regions in the vicinity also decrease, and therefore discharge is facilitated, and stable display operation is possible. According to the present invention, it is possible to stably turn on a PDP that has been left for a long time, and it is possible to uniformly turn on a part where the lighting of the panel becomes non-uniform due to a change in the discharge start / sustain voltage in the production process. Becomes

Claims (2)

[Claims] 1. A plurality of row electrode pairs, which extend in parallel to each other in the horizontal direction and are spaced apart by a discharge gap, face the row electrode pair in a spaced manner, and extend in the vertical direction to extend the rows. A plasma display panel comprising: a plurality of column electrodes forming a light emitting pixel region at each intersection with an electrode pair, wherein the light emitting pixel region having a narrow discharge gap is mixed. 2. The plasma display panel according to claim 1, wherein the light emitting pixel region having a narrow discharge gap is arranged near a discharge gas introducing hole. [0001]