JPH0594773A - Gas discharge display panel - Google Patents

Abstract

(57) [Abstract] [Purpose] Without deteriorating the insulation between discharge cells.
The display of the gas discharge display panel will be high quality and fine. [Structure] A plurality of rows of band-shaped cathodes 3 are formed on an upper surface of a rear substrate 2 made of an insulating material, and an emitter layer 4 is formed so as to cover the surface. A first barrier rib 5 is provided between the cathodes 3 having the emitter layer 4 adhered thereto so as to form a plane substantially flush with the upper surface of the emitter layer 4. On the upper surfaces of the emitter layer 4 and the first barrier ribs 5, there are arranged lattice-shaped second barrier ribs 6 formed by intersecting a plurality of rows of barrier ribs made of an insulating material in different directions.
Are aligned with the upper surface of the first barrier rib 5. A plurality of anodes 8 are formed on a front substrate 7 made of an insulating material, and the two substrates are arranged so as to face each other so that the cathode 3 and the anode 8 intersect each other with a discharge gap, and a discharge cell is formed at the intersection. ..

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 having a discharge electrode provided with an emitter layer and a barrier rib, and particularly a gas discharge devised so as to obtain a sharp display with high brightness and high density. Regarding display panel.

[0002]

2. Description of the Related Art Conventionally, in a gas discharge display panel of that kind, a plurality of strip-shaped or linear cathodes are formed in parallel on a rear substrate made of an insulating material such as flat glass, and a lower electrode is formed on the rear substrate. The melting point glass paste is printed in a grid pattern to form first barrier ribs. And covers the surface of the cathode and
The emitter layer is formed so as to be substantially flush with the upper surface of the barrier rib, and the grid-shaped second layer is formed on the upper surface of the first barrier rib.
And forming barrier ribs. Further, an anode is formed on the front substrate, and the rear substrate and the front substrate are arranged so as to face each other so that the cathode and the anode intersect each other with a discharge gap, and the peripheral portions of both substrates are sealed. It forms an airtight envelope. Then, the discharge gas is sealed in the airtight envelope,
A discharge cell is formed at the portion where the cathode and the anode face each other.

Therefore, a voltage is selectively applied to each of the cathode and the anode to discharge the discharge cells formed by the selected electrodes to display characters, symbols, pictures and the like.

According to this gas discharge display panel, the cathode of each discharge cell is surrounded by the lattice-shaped first barrier rib and the second barrier rib one by one, so that the cathode area of the discharge cell is substantially uniform. Since the discharge characteristics are stable and the individual discharge cells are clearly divided, a high-quality display with a sharp contour can be obtained, and abnormal lighting of adjacent non-selected discharge cells can be prevented.

[0005]

By the way, in recent years, the gas discharge display panel is required to have a higher quality and finer display. Therefore, even the gas discharge display panel described above has a higher density. In order to achieve such a display panel, the width and pitch of the discharge electrodes and the barrier ribs have been reduced in order to reduce the discharge cells and the discharge cell pitch. However, in the case of a barrier rib formed by printing high-viscosity low-melting-point glass, if the width is reduced, so-called glass paste does not easily come off and printing unevenness occurs, and as a result, insulation between discharge cells may deteriorate. was there.

Further, on the upper surface of the lattice-shaped first barrier rib,
Similarly, in the structure in which the grid-shaped second barrier ribs are arranged, the discharge cells are not formed correctly even if a slight dimensional deviation occurs during the formation of the discharge cells, which is extremely difficult in terms of manufacturing technology. there were.

The present invention has been devised in view of the above points, and solves the above-mentioned problems at once, and enables high-quality and fine display without deteriorating the insulation between discharge cells. The object is to realize a gas discharge display panel of high density.

[0008]

In order to achieve the above-mentioned object, a gas discharge display panel of the present invention comprises a rear substrate having a plurality of rows of discharge electrodes coated with an emitter layer on the surface and a plurality of rows of discharge electrodes. In the gas discharge display panel in which discharge cells are formed at the intersections, the discharge electrodes of the rear substrate are disposed so as to face each other so that the discharge electrodes intersect each other with a discharge gap. First barrier ribs made of an insulating material that form substantially the same plane as the emitter layer are disposed between the barrier layers, and a plurality of rows of barrier ribs made of an insulating material are arranged on the upper surfaces of the emitter layer and the first barrier ribs. It is characterized in that the lattice-shaped second barrier ribs formed by being crossed differently are positioned such that the row of barrier ribs in one direction corresponds to the upper surface of the first barrier ribs. It is intended.

[0009]

In the present invention, the first barrier ribs are not in a grid shape as in the conventional case but in a row shape arranged between the discharge electrodes of the back substrate, so that the first barrier ribs can be formed by printing. Even if the width and the pitch are reduced, there is little risk of print unevenness.

Further, since the lattice-shaped second barrier ribs are arranged on the upper surface of the row-shaped first barrier ribs, the dimension of the second barrier ribs is parallel to the row of the first barrier ribs. Deviation is allowed and manufacturing becomes easy.

Further, a lattice-shaped second barrier rib formed by intersecting a plurality of rows of barrier ribs in different directions on the upper surface of the emitter layer and the first barrier rib, and a row of barrier ribs in one direction is a first barrier rib. By positioning the barrier ribs so as to correspond to the upper surfaces thereof, the cathode area of each discharge cell is substantially constant and the discharge characteristics are stable. Moreover, since the individual discharge cells are clearly separated, high-quality display with a sharp outline can be obtained without light emission leaking to the adjacent discharge cells, and abnormal lighting of adjacent non-selected discharge cells can be prevented. You can

[0012]

1 is an exploded perspective view of a gas discharge display panel of the present invention, FIG. 2 is a perspective view of a front substrate of the present invention, and FIG. 3 is a sectional view of the gas discharge display panel of the present invention.

In the figure, 1 is a gas discharge display panel of the present invention, 2 is a rear substrate made of an insulating material such as flat glass having a thickness of several mm, and a plurality of rows of Ag / Pd-based metal paste are provided on the upper surface thereof. Print in strips with a thickness of 20 to 30 μm, and
The cathode 3 is formed by firing at a temperature of about 50 to 620 ° C.

Reference numeral 4 denotes an emitter layer deposited and formed so as to cover the surface of the cathode 3, and a material having a small work function, less wear due to ion collision, and a higher melting point is used as the material. Lanthanum hexaboride (L
hexaboride of the rare earth elements including aB ₆₎ (YB _6, La
B ₆ , CeB ₆ , GdB _{6 and the} like), rare earth element tetraboride (YB ₄ , GdB _{4 and the} like), rare earth element oxide (Y
₂ O ₃ , La ₂ O ₃ , CeO ₂ , Gd ₂ O ₃ etc.), oxides of alkaline earth metal elements (MgO, SrO etc.), oxides of alkaline earth metal elements and molybdates of these elements Complex compound of an oxide of an alkaline earth metal element and a tungstate salt of the element, a complex compound of an oxide of an alkaline earth metal element and an aluminate of the element (aMg)
_{O · bAl 2 O 3, aBaO} · bSrO · cAl 2 O 3 , etc.) and the like can be preferably used.

Reference numeral 5 is a cathode 3 having the emitter layer 4 deposited thereon.
The first barrier ribs are arranged between each other. This first barrier rib 5 has its upper surface substantially flush with the upper surface of the emitter layer 4, and a lead-borosilicate glass-based low-melting glass paste is printed in a plurality of rows at a thickness of 350 to 400 μm, and 400 to 500. It is formed by firing at a temperature of about ° C.

Reference numeral 6 is a lattice-shaped second barrier rib formed by intersecting a plurality of rows of barrier ribs made of a lead borosilicate glass-based low-melting-point glass paste in different directions, the emitter layer 4 and the first barrier rib. On the upper surface of the barrier rib 5, a row of barrier ribs 6a in one direction is arranged on the upper surface of the barrier rib 5.
It is formed by printing so as to correspond to the upper surface and firing at a temperature of 400 to 500 ° C.

Reference numeral 7 denotes a front substrate made of an insulating material such as flat glass. On the surface of the front substrate 7 facing the rear substrate 2, transparent electrodes such as tin oxide and indium oxide are deposited in parallel in a strip shape. To form the anode 8.

Reference numeral 9 is the rear substrate 2 of the front substrate 7.
A lead borosilicate glass-based low-melting-point glass paste is printed on the surface facing the anode and the surface of the anode 8 in a grid pattern having a spacing substantially equal to that of the second via ribs 6 of the rear substrate 2 and fired. It is a barrier rib.

The cathode 3 and the anode 8 intersect with each other with a discharge gap therebetween, and the tops of the barrier rib 6b and the third barrier rib 9 in the other direction of the second barrier rib 6 are slightly spaced apart. The rear substrate 2 and the front substrate 7 are arranged so as to overlap each other, and a discharge cell is formed at the intersection of the cathode 3 and the anode 8. Further, the back substrate 2 and the front substrate 7 are
The gas discharge display panel 1 is formed by sealing the peripheral portion of and with a low melting point glass to form an airtight container, and filling a discharge gas mainly containing a rare gas therein.

[0020]

As described above in detail, according to the gas discharge display panel of the present invention, the first barrier ribs are not in the grid shape as in the conventional case but in the row shape arranged between the discharge electrodes of the rear substrate. Therefore, when the first barrier rib is formed by printing, even if the width and pitch of the first barrier rib are reduced, printing unevenness is less likely to occur. Therefore, high quality and fine display can be achieved, To improve the insulation property of. Further, as compared with the conventional gas discharge display panel in which the first barrier ribs have a lattice shape, the material of the barrier ribs is small, which greatly contributes to the reduction of the manufacturing cost of the gas discharge display panel.

Then, on the upper surface of the row-shaped first barrier ribs,
Because of the structure in which the lattice-shaped second barrier ribs are arranged, the dimensional deviation of the second barrier ribs is allowed in the direction parallel to the row of the first barrier ribs, and the gas discharge display panel Manufacturing is easy.

Further, a lattice-shaped second barrier rib formed by intersecting a plurality of rows of barrier ribs in different directions on the upper surface of the emitter layer and the first barrier rib, and a row of barrier ribs in one direction is the first barrier rib. By positioning the barrier ribs so as to correspond to the upper surfaces of the barrier ribs, the cathode areas of the respective discharge cells are substantially uniform, so that the discharge characteristics are further stabilized. Moreover, the individual discharge cells are clearly divided, and the light emission does not leak to the adjacent discharge cells, so that finer display with a sharper contour and higher quality can be obtained.
It is possible to prevent abnormal lighting of adjacent non-selected discharge cells.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a gas discharge display panel of the present invention.

FIG. 2 is a perspective view of a front substrate used in the gas discharge display panel of the present invention.

FIG. 3 is a sectional view of a gas discharge display panel of the present invention.

[Explanation of symbols]

 1 Gas Discharge Display Panel 2 Rear Substrate 3 Cathode 4 Emitter Layer 5 First Barrier Rib 6 Second Barrier Rib 6a Barrier Rib in One Direction 6b Barrier Rib in the Other Direction 7 Front Substrate 8 Anode

Claims (1)

[Claims] 1. A rear substrate having a plurality of rows of discharge electrodes coated with an emitter layer on its surface and a front substrate having a plurality of rows of discharge electrodes, each of which has a discharge gap therebetween. In a gas discharge display panel in which discharge cells are formed at the intersections so as to be opposed to each other, a first electrode made of an insulating material that forms substantially the same plane as the emitter layer between the discharge electrodes of the rear substrate. The barrier ribs are arranged, and second lattice ribs in a grid shape formed by intersecting a plurality of rows of barrier ribs made of an insulating material in different directions on the upper surfaces of the emitter layer and the first barrier ribs. 2. The gas discharge display panel, wherein the row of barrier ribs is positioned so as to correspond to the upper surface of the first barrier rib.