JPH07201283A - Gas discharge display panel - Google Patents

Abstract

(57) [Abstract] [Purpose] Even if the transparent electrode on the front substrate side is damaged in a certain discharge cell, the transparent electrode itself does not become a disconnection, and therefore discharge cells other than the damaged part cannot be discharged. To realize a gas discharge display panel without [Structure] Back substrate 12 having a plurality of strip-shaped cathodes 18 arranged in parallel
And a transparent front substrate in which a plurality of strip-shaped transparent anodes 24 are arranged in parallel.
14 and 14 are arranged so that the electrodes of each substrate cross each other with a predetermined gap therebetween to form a discharge cell 28 at each intersection of each electrode, and the peripheral edges of both substrates are hermetically sealed to provide an envelope. In the gas discharge display panel 10 in which the discharge gas is enclosed, a plurality of first barrier ribs 26a for partitioning the transparent electrodes 24 are arranged in parallel on the electrode forming surface 14a of the front substrate 14 and the transparent electrodes are provided. The width W of 24 was set wider than the interval P between the first partition walls 26a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas discharge display panel, and more particularly to a rear substrate having electrodes and a transparent front substrate having transparent electrodes, the electrodes of both substrates being separated by a predetermined gap. The present invention relates to a gas discharge display panel having a structure in which both substrates are arranged so as to face each other and the peripheral edges of both substrates are hermetically sealed to form an envelope, and a discharge gas is enclosed in the envelope.

[0002]

2. Description of the Related Art As shown in FIG. 5, a conventional gas discharge display panel 50 includes a back substrate 54 made of an insulating material having a plurality of strip-shaped cathodes 52 arranged in parallel on one surface, and a strip-shaped transparent anode 56 on one surface. A plurality of side-by-side front substrates 58 made of transparent insulating material
52 and the transparent anode 56 are arranged so as to be substantially orthogonal to each other with a predetermined gap therebetween, and the peripheral edges of both substrates are hermetically sealed with a sealing material to form an envelope 60, and the internal space of the envelope 60 Is filled with a predetermined discharge gas.

A large number of discharge cells 62 are formed in a dot matrix at each intersection of the transparent anode 56 and the cathode 52. Each discharge cell 62 is surrounded by a lattice-shaped back side barrier rib 64 formed on the facing surface of the back substrate 54 and a lattice-shaped front side barrier rib 66 formed on the facing surface of the front substrate 58. Further, spacers 68 are formed on the top surface of the back side barrier ribs 64 at a predetermined interval, and a gap corresponding to the height of the spacers 68 is provided between the back side barrier ribs 64 and the front side barrier ribs 66. 70 are formed, and the discharge cells 62 are communicated with each other through the gap 70.

However, by selectively applying a DC voltage between the transparent anode 56 and the cathode 52, a desired discharge cell can be obtained.
A discharge is generated at 62, and light based on the discharge passes through the transparent anode 56 and the front substrate 58 and is emitted to the outside. As a result, arbitrary characters and figures are displayed on the display surface of the front substrate 58. It should be noted that the flow of ions between the discharge cells 62 is ensured through the gap 70.

[0005]

By the way, the electrode (that is, the transparent anode 56) formed on the side of the front substrate 58 is required to maintain the translucency so as not to interfere with the display. Therefore, the electrodes on the front substrate 58 side are
Since it must be formed of a transparent conductive film such as an A film (SnO ₂ ) or an ITO film (In ₂ O ₃ .SnO ₂ ), and the film thickness is limited, there is a certain limit in securing the strength. . Therefore, the electrode on the front substrate 58 side is easily damaged by a mistake during the assembling process or by sputtering during discharge. Moreover, as shown in FIG. 6 which is a sectional view taken along line BB ′ of FIG. 5, one transparent anode 56 is provided in a discharge cell.
If the discharge cell 62a is damaged, not only the discharge cell 62a becomes incapable of discharging, but also the transparent anode 56 itself is disconnected, so that the discharge cells 62b and below located at the end of the disconnection point may be incapable of being discharged in a chain. there were.

On the other hand, since the cathode 52 is an electrode on the side of the rear substrate 54, it is not necessary to ensure the translucency.
Therefore, there is a high degree of freedom in selecting the material and setting the thickness, and it is possible to secure a certain level of strength. Actually, the cathode 52 is silver / palladium (Ag / P).
a strip-shaped cathode substrate 52a made of d) or the like, and the cathode substrate 52a
And an emitter layer 52b in which an emitter material made of a mixture of LaB ₆ and BaAl ₂ O ₄ is laminated on the surface of the. Therefore, it can be said that the cathode 52 has excellent impact resistance and sputter resistance, and is unlikely to be damaged to the extent that the cathode 52 itself is broken.

The present invention has been made in view of the above-mentioned problems of the conventional example, and an object thereof is to provide a transparent electrode on the front substrate side even if the transparent electrode is damaged in a certain discharge cell. The purpose of the present invention is to realize a gas discharge display panel which does not become disconnected and therefore discharge cells other than the damaged portion are not disabled.

[0008]

In order to achieve the above object, a gas discharge display panel according to the present invention comprises a back substrate made of an insulating material having a plurality of strip electrodes arranged in parallel on one surface, and a strip substrate on one surface. A front substrate made of a transparent insulating material in which a plurality of transparent electrodes are juxtaposed, and the electrodes of each substrate are arranged so as to intersect with a predetermined gap to form a discharge cell at each intersection of the electrodes, In a gas discharge display panel in which the peripheral edges of both substrates are hermetically sealed to form an envelope, and a predetermined discharge gas is sealed in the envelope, the transparent electrodes are formed between the transparent electrodes on the electrode formation surface of the front substrate. A plurality of partition walls for partitioning are arranged in parallel, and the lateral width of each transparent electrode is set to be wider than the interval between the partition walls.

[0009]

As described above, since the width of each transparent electrode is set to be wider than the interval between the partition walls that partition the transparent electrodes, at least one side portion of each transparent electrode is buried in the partition wall. . Therefore, even if the transparent electrode is damaged in a certain discharge cell, the power supply can be maintained through the part hidden in the barrier rib. Therefore, the transparent electrode itself is not broken, and the discharge cells other than the location where the damage has occurred are not disabled.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A gas discharge display panel according to the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a schematic sectional view showing a gas discharge display panel 10. The gas discharge display panel 10 includes a rear substrate 12 made of an insulating material such as flat glass.
And a front substrate made of transparent insulating material such as flat glass
14 are opposed to each other with a predetermined gap therebetween, and the peripheral edges of both substrates are hermetically sealed with a sealing material (not shown) such as low-melting glass to form an envelope 16, and the inside of the envelope 16 Ne, A in space
The basic configuration is to fill a discharge gas mainly containing a rare gas such as r, He, or Xe.

A cathode 18 is formed on the facing surface 12a of the rear substrate 12. The cathode 18 is the opposite surface 12a of the rear substrate 12.
A strip-shaped cathode substrate 18a made of silver, palladium (Ag, Pd) or the like adhered to the
The emitter layer 18b is formed by depositing an emitter material made of a mixture of aB ₆ and BaAl ₂ O ₄ or the like by plasma spraying. Although not shown in FIG. 1, a plurality of cathodes 18 are actually arranged side by side on the facing surface 12 a of the rear substrate 12. Backside barrier ribs 20 are further arranged on the facing surface 12 a of the back substrate 12. This back side barrier rib 20 is formed by printing and baking low melting point glass, and has a first partition wall 20a for partitioning each cathode 18 and a second partition wall 20b for partitioning each cathode 18 at a predetermined length. It has a grid shape. Further, a spacer 22 made of an insulating material such as glass is projected on the top surface of the intersection of the first partition wall 20a and the second partition wall 20b of the back side barrier rib 20.

As shown in FIG. 2 which is a sectional view taken along the line AA 'in FIG. 1 and in FIG. 3 which is a perspective view showing the facing surface 14a side of the front substrate 14, the facing surface 14a of the front substrate 14 is provided with NESA. Membrane (S
A plurality of strip-shaped transparent anodes 24 made of a transparent conductive film such as nO ₂ ) or ITO film (In ₂ O ₃ .SnO ₂ ) are deposited and formed. Front side barrier ribs 26 are further arranged on the facing surface 14 a of the front substrate 14. This front side barrier rib 26 is
Similar to the back side barrier rib 20, a plurality of first partition walls 26a which are formed by printing and baking low melting point glass and partition between the respective transparent anodes 24 and the respective transparent anodes 24 are separated by a predetermined length. It has a lattice shape having a plurality of second partition walls 26b. Further, the width W of each transparent anode 24 is set to be wider than the interval P between the first partition walls 26a of the front side barrier rib 26. Therefore, both side portions (the right side portion 24a and the left side portion 24b) of each transparent anode 24 are buried in the first partition wall 26a.

The rear substrate 12 and the front substrate 14 are arranged so that the electrodes of each substrate are substantially orthogonal to each other with a predetermined gap therebetween.
Discharge cells 28 surrounded by the back-side barrier ribs 20 and the front-side barrier ribs 26 are formed in a dot matrix pattern at each intersection of both electrodes. In addition, between the back side barrier rib 20 and the front side barrier rib 26, the spacer
Since 22 is interposed, a gap 30 corresponding to the height of the spacer 22 is formed between both barrier ribs. Each discharge cell 28 is
Communication is performed through this gap 30.

When a direct current voltage higher than the discharge start voltage is applied between the transparent anode 24 and the cathode 18 from a power source (not shown), discharge is generated in the discharge cell 28, and light having a predetermined emission color is generated. The light passes through the transparent anode 24 and the front substrate 14 and is emitted to the outside. By selectively executing this voltage application via a control / driving circuit (not shown), discharge light emission is generated in a desired discharge cell 28 and an arbitrary character or figure is displayed on the display surface 14b of the front substrate 14. be able to. During discharge, each discharge cell is passed through the gap 30.
The distribution of ions between 28 is secured.

Right side 24a and left side of each transparent anode 24
24b passes through each discharge cell 28 of the transparent anode 24,
The first partition wall 26 of the barrier rib 26 on the front surface extends over a predetermined width.
Since it is buried in a, even if the transparent anode 24 is damaged in a certain discharge cell 28, the portion hidden inside the first partition wall 26a is not damaged and the transparent anode 24 itself may be broken. Absent. Therefore, regardless of the fact that the discharge cell 28 cannot be discharged due to damage to the transparent anode 24, the transparent electrode
The other discharge cells 28 associated with 24 will not be incapable of being discharged in a chain.

The front side barrier rib 26 is formed of a transparent anode in advance.
On the facing surface 14a of the front substrate 14 on which 24 is adhered and formed, a glass paste as a material is formed by thick film printing in a grid pattern and baking, but at that time, a slight misalignment occurs. Even if it occurs, since the width W of the transparent anode 24 is set wider than the interval P between the first partition walls 26a of the front side barrier rib 26, as shown in FIG. 4, at least one side portion (in the figure, Then, the right side portion 24a) is buried in the first partition wall 26a. Therefore, similarly to the above, even if the transparent anode 24 is damaged, the portion hidden inside the first partition wall 26a is not damaged and the transparent anode 24 itself is not broken.

The present invention is not limited to the above embodiment. For example, the DC drive type gas discharge display panel has been illustrated above, but the present invention may be applied to an AC drive type gas discharge display panel.

[0018]

In the gas discharge display panel according to the present invention, the width of each transparent electrode is set to be wider than the interval between the partitions that partition the transparent electrodes. Therefore, at least one side of each transparent electrode has the above-mentioned partition. It will be buried inside. Therefore, even if the transparent electrode is damaged in a certain discharge cell, the power supply is maintained through the portion hidden in the barrier rib.
Therefore, the transparent electrode itself is not broken, and the discharge cells other than the location where the damage has occurred are not disabled.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing an embodiment of a gas discharge display panel according to the present invention.

FIG. 2 is a schematic cross-sectional view taken along the line A-A ′ of FIG.

FIG. 3 is a schematic perspective view showing a facing surface side of the front substrate according to the embodiment.

FIG. 4 is a schematic cross-sectional view showing another embodiment.

FIG. 5 is a schematic sectional view showing a conventional example.

6 is a cross-sectional view taken along the line B-B ′ of FIG.

[Explanation of symbols]

 10 Gas discharge display panel 12 Rear substrate 12a Rear substrate facing surface 14 Front substrate 14a Front substrate facing surface 16 Envelope 18 Cathode 24 Transparent anode 24a Transparent anode right side 24b Transparent anode left side 26 Front barrier rib 26a First barrier rib of front side barrier rib 28 Discharge cell

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

[Procedure amendment]

[Submission date] August 8, 1994

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

[Figure 1]

[Fig. 2]

[Figure 3]

[Figure 4]

[Figure 5]

[Figure 6]

Claims (3)

[Claims] 1. A back substrate made of an insulating material having a plurality of strip-shaped electrodes arranged in parallel on one surface, and a front substrate made of a transparent insulating material having a plurality of strip-shaped transparent electrodes arranged in parallel on one surface. Are arranged so as to intersect each other with a predetermined gap therebetween to form a discharge cell at each intersection of each electrode, and the peripheral edges of both substrates are hermetically sealed to form an envelope. In a gas discharge display panel in which a predetermined discharge gas is sealed, a plurality of barrier ribs for partitioning the transparent electrodes are provided side by side on the electrode formation surface of the front substrate, and the width of each transparent electrode is set to be larger than the distance between the barrier ribs. A gas discharge display panel characterized by being widely set. 2. The gas discharge display panel according to claim 1, wherein both side portions of each transparent electrode are buried in the partition wall. 3. The gas discharge display panel according to claim 1, wherein one side portion of each transparent electrode is embedded in the partition wall.