JPH09115451A - Plasma display panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce influence by mixed-in impurity in a manufacturing process of a plasma display panel. SOLUTION: This plasma display panel has a pair of base boards which are oppositely arranged so as to form an inside space and whose periphery is sealed, and a ventilating hole 13 is arranged on the outer pwriphery of one base board, and discharge gas is sealed in the inside space through the ventilating hole 3. An introducing passage forming rib 11 is arranged to regulate an introducing passage 14 of the discharge gas from the ventilating hole 13, and an island-shaped rib 12 is arranged in a gas introducing passage 14.

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.

[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.

[0010]

[0003]

[0011]

By the way, impurities such as water are easily mixed in when the discharge gas is filled. Then, impurities are adsorbed on the inner surface of the discharge cell near the air holes, the characteristics of the MgO layer deteriorate, and the display operation becomes unstable.

The present invention has been made in view of the above circumstances, and an object thereof is to reduce the influence of impurities mixed in.

[0013]

[0004]

[0014]

According to the present invention, there is provided a pair of substrates, which are arranged to face each other in a plasma display panel and face each other so as to form an internal space, and the periphery is sealed. And a rib for forming a discharge passage, which is configured to seal the discharge gas in the internal space through the ventilation hole and defines a discharge gas introduction path from the ventilation hole, and an island-shaped rib in the gas introduction passage. Is provided.

[0015]

[0005]

[0016]

[Function] A rib for forming the introduction passage is provided, and the discharge gas introduced from the ventilation hole is introduced into the discharge cell region through the introduction passage,
Moreover, by providing the island-shaped ribs in the introduction path, even if impurities are mixed in with the impurities, the impurities are adsorbed on the sidewalls of the introduction-path forming ribs in the introduction path and the surfaces of the island-shaped ribs, and Prevents inflow into the discharge cell region.

[0017]

[0006]

[0018]

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

In the surface discharge type PDP shown in FIGS. 1 and 2, the inner surface of the front glass substrate 1 (rear substrate 2) which is the display surface.
A plurality of transparent sustain electrode pairs 5 are formed in parallel with each other on the surface (opposite to). Each sustain electrode pair 5 is configured to form a discharge gap that forms the center of each light emitting region, and the bus electrode 7 is formed along the longitudinal direction because the transparent electrode has a relatively high electric resistance. Bus electrode 7 has an area smaller than the area on each of sustain electrode pair 5, and is provided on the edge of sustain electrode pair 5 opposite to the discharge gap. Further, a dielectric layer 8 made of low melting point glass is formed on the inner surface side of the bus electrode 7, and is connected to the internal space 3 via the MgO layer 9.

[0020]

On the other hand, an address electrode 6 is formed on the inner surface side of the rear glass substrate 2 on the opposite side, and a phosphor layer 4 is formed so as to cover the address electrode 6. The address electrodes 6 and the bus electrodes 7 are arranged so as to cross each other, and provided with ribs 10 for dividing discharge cells. The periphery of the internal space 3 where the front glass substrate 1 and the rear glass substrate 2 face each other is sealed with a sealing glass 15. Back glass substrate 2
Vent holes 13 are provided at the corners of the chamber and are used to seal the discharge gas into the internal space through the glass tube 16.

The glass tube 16 is sealed after introducing the discharge gas into the internal space.

In the present invention, the introduction passage forming rib 11 is arranged so as to form the gas introduction passage 14 around the ventilation hole 13,
Further, the gas introduction path 14 is provided with island-shaped ribs 12.

[0023]

In the structure of the present invention having the gas introduction passage 14 and the island-shaped rib, even if the enclosed gas contains impurities (for example, water), the island-like rib is formed while the gas passes through the gas introduction passage 14. It is possible to prevent impurities from being adsorbed by the ribs and adversely affecting the discharge cell directly.

The introduction path forming ribs and the island ribs are formed by sandblasting at the same time as the ribs defining the discharge cells, by printing, firing or solid printing of low melting point glass paste and firing.

Further, an impurity adsorbing material (for example, MgO layer) may be formed on the surfaces (side walls) of the introduction path forming rib and the island rib, and the island rib is made of a material having a good adsorbing property of impurities. You may form.

[0026]

[0009]

[0027]

[Effect of the invention] The influence of impurities mixed in is reduced,
You can get a good quality panel.

[Brief description of the drawings]

FIG. 1 is a sectional view of a partial side surface of a PDP according to the present invention.

FIG. 2 is a sectional view of a partial plane of a PDP according to the present invention.

[Explanation of symbols]

 1 ・ ・ ・ Front glass substrate 2 ・ ・ ・ Rear glass substrate 3 ・ ・ ・ ・ ・ Internal space 4 ・ ・ ・ ・ ・ Phosphor layer 5 ・ ・ ・ ・ ・ Sustaining electrode pair 6 ・ ・ ・ ・ ・Address electrode 7 ・ ・ ・ Bus electrode 8 ・ ・ ・ ・ ・ Dielectric layer 9 ・ ・ ・ MgO layer 10 ・ ・ ・ Rib 11 ・ ・ ・ Introductory path forming rib 12 ・ ・ ・・ Island rib 13 ・ ・ ・ Vent hole 14 ・ ・ ・ ・ ・ Gas introduction path 15 ・ ・ ・ ・ ・ Sealing glass 16 ・ ・ ・ Glass tube 17 ・ ・ ・ ・ ・ Discharge light emitting area (discharge cell region)

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[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.

[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.

[0003]

By the way, impurities such as water are easily mixed in when the discharge gas is filled. Then, impurities are adsorbed on the inner surface of the discharge cell near the air holes, the characteristics of the MgO layer deteriorate, and the display operation becomes unstable. The present invention has been made in view of the above circumstances and aims to reduce the influence of impurities that are mixed.

[0004]

According to the present invention, there is provided a pair of substrates, which are arranged to face each other in a plasma display panel and face each other so as to form an internal space, and the periphery is sealed. And a rib for forming a discharge passage, which is configured to seal the discharge gas in the internal space through the ventilation hole and defines a discharge gas introduction path from the ventilation hole, and an island-shaped rib in the gas introduction passage. Is provided.

[0005]

[Function] A rib for forming the introduction passage is provided, and the discharge gas introduced from the ventilation hole is introduced into the discharge cell region through the introduction passage,
Moreover, by providing the island-shaped ribs in the introduction path, even if impurities are mixed in with the impurities, the impurities are adsorbed on the sidewalls of the introduction-path forming ribs in the introduction path and the surfaces of the island-shaped ribs, and Prevents inflow into the discharge cell region.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments will be described below with reference to the drawings.
In the surface discharge PDP shown in FIGS. 1 and 2, a plurality of transparent sustain electrode pairs 5 are formed in parallel with each other on the inner surface of the front glass substrate 1 (the surface facing the rear substrate 2) which is the display surface. ing. Each sustain electrode pair 5 is configured to form a discharge gap that forms the center of each light emitting region, and the bus electrode 7 is formed along the longitudinal direction because the transparent electrode has a relatively high electric resistance. Bus electrode 7 has an area smaller than the area on each of sustain electrode pair 5, and is provided on the edge of sustain electrode pair 5 opposite to the discharge gap. Further, a dielectric layer 8 made of low melting point glass is formed on the inner surface side of the bus electrode 7, and is connected to the internal space 3 via the MgO layer 9.

On the other hand, an address electrode 6 is formed on the inner surface side of the rear glass substrate 2 on the opposite side, and a phosphor layer 4 is formed so as to cover the address electrode 6. The address electrodes 6 and the bus electrodes 7 are arranged so as to cross each other, and provided with ribs 10 for dividing discharge cells. The periphery of the internal space 3 where the front glass substrate 1 and the rear glass substrate 2 face each other is sealed with a sealing glass 15. Back glass substrate 2
Vent holes 13 are provided at the corners of the chamber and are used to seal the discharge gas into the internal space through the glass tube 16.
The glass tube 16 is sealed after introducing the discharge gas into the internal space. In the present invention, the gas introduction passage 14 is provided around the ventilation hole 13.
The ribs 11 for forming the introduction passages are arranged so as to form the above, and the island-shaped ribs 12 are further provided in the gas introduction passages 14.

In the structure of the present invention having the gas introduction passage 14 and the island-shaped rib, even if the enclosed gas contains impurities (for example, water), the island-like rib is formed while the gas passes through the gas introduction passage 14. It is possible to prevent impurities from being adsorbed by the ribs and adversely affecting the discharge cell directly. The introduction path forming ribs and the island-shaped ribs are formed simultaneously with the ribs defining the discharge cells by printing, firing or solid printing of the low melting point glass paste, and firing and sandblasting. Also,
Impurity adsorbing materials (for example, MgO layers) may be formed on the surfaces (side walls) of the introduction path forming ribs and the island ribs, and the island ribs may be formed of a material having a high adsorbability of impurities. .

[0009]

[Effect of the invention] The influence of impurities mixed in is reduced,
You can get a good quality panel.

Claims (1)

[Claims] 1. A pair of substrates, which are arranged to face each other so as to form an internal space and whose periphery is sealed, have a vent hole on the outer periphery of the one substrate, and discharge into the internal space through the vent hole. A plasma display panel in which a gas is enclosed, characterized in that an introduction path forming rib defining an introduction path of the discharge gas from the ventilation hole is provided and an island rib is provided in the gas introduction path. Plasma display panel. [0001]