JPS639338B2 - - Google Patents

Description

TECHNICAL FIELD OF THE INVENTION The present invention relates to a gas discharge panel equipped with a compensating electrode for externally compensating for electrode breakage.

Background of the Technology A first substrate having a plurality of first electrodes formed in parallel on its upper surface and a second substrate having a plurality of second electrodes formed in parallel on its lower surface are used as the first and second electrodes. The two substrates are arranged to face each other with a predetermined gap in between so as to be perpendicular to each other, the peripheries of the two substrates are adhered via a sealing member, and a discharge gas is sealed in a sealed space formed by the two substrates and the sealing member. In discharge panels, it is necessary to take measures to compensate for and correct electrode disconnections.

Prior Art and Problems Conventionally, the following two methods have been adopted as compensation and correction measures for this type of gas discharge panel.

(1) Correct any disconnections immediately after forming electrodes on each board.

(2) Each electrode is formed so that its both ends are exposed to the outside of the sealing member, and the exposed portion is used to correct the disconnection.

However, in the case of (1), there are disadvantages in that wire breaks may occur during the subsequent heat treatment process, or they may be missed during inspection and cannot be corrected if they are discovered after panel formation.
In this case, there was a drawback that wiring had to be run from one exposed end of the broken electrode to the other exposed end in order to correct the break.

OBJECTS OF THE INVENTION The present invention is intended to solve the various drawbacks mentioned above, and it is an object of the present invention to provide a gas discharge panel in which electrode disconnection can be easily compensated for and corrected after the panel is fabricated.

Structure of the Invention In order to achieve the above-mentioned object, in the present invention, compensation electrodes with both ends exposed outside the sealing member are formed on the non-display portions of the opposing surfaces of each substrate,
The structure is such that electrode disconnection can be compensated and corrected by connecting both end exposed portions of the disconnection electrode to both end exposed portions of the compensation electrode.

Embodiments of the invention Hereinafter, embodiments of the invention will be described with reference to the drawings.

FIG. 1 is a front sectional view of a gas discharge panel, in which 1 and 2 are glass substrates, and 3 is a sealing glass (sealing member).

An electrode 4 and a compensation electrode 5 are formed on the upper surface of the glass substrate 1, extending along the plane of the drawing, and an insulating layer 6 made of low melting point glass, alumina, etc., and a protective layer 7 made of magnesium oxide, etc. are sequentially formed thereon. It is formed. The method of forming the electrodes 4 and the compensation electrodes 5 is as shown in the plan view of FIG. are formed in the non-display portions on both sides of the display portion 8, two each.

An electrode 9 and a compensation electrode 10 are formed on the lower surface of the glass substrate 2, extending in a direction perpendicular to the paper plane of FIG. 1, and an insulating layer 11 and a protective layer 12 are sequentially formed thereon. The formation procedure for each of these layers is the same as in the case of the glass substrate 1, in which a plurality of electrodes 9 are formed across the display area, and two compensation electrodes 10 are formed on each non-display area on both sides of the display area. ing.

The glass substrates 1 and 2 are placed facing each other with a predetermined gap in between and are bonded together via a seal glass 3, and a discharge gas is discharged into the sealed space 13 surrounded by the glass substrates 1 and 2 and the seal glass 3 after evacuation. It is enclosed.

Each of the above-mentioned electrodes and each compensation electrode is formed with both ends exposed to the outside of the seal glass 3, as illustrated in FIG. 2 for the electrode 4 and the compensation electrode 5. 4a is one exposed end (terminal forming part) of the electrode 4, 4b is the other exposed end of the electrode 4, and 5a and 5b are both exposed ends of the compensation electrode 5. The electrodes 4 are arranged so that one exposed end 4a is alternately located on the opposite side of the sealing glass 3, and by arranging them in this way, the electrode arrangement pitch can be reduced.

In a gas discharge panel with such a configuration,
Electrode breakage can be easily compensated for and corrected using the compensation electrode. Next, the procedure will be explained with reference to FIG. 2, taking the electrode 4 as an example.

If a disconnection is detected at part A of the second electrode 4 from the top in FIG.
0 to one exposed portion 5a of the compensation electrode 5, and the other exposed end 4b of the electrode 4 is connected to the other exposed portion 5b of the same compensation electrode 5 by a lead wire 101. By making such a connection, the entire area other than the A section can be lit up. In this case, since the electrode arrangement pitch of the gas discharge panel is several times larger than the electrode width and the width of the disconnection is often less than the electrode width, display without display defects can be achieved in most cases. Furthermore, since it is rare for one electrode to be disconnected at two or more locations, most disconnections can be corrected. If a plurality of compensation electrodes are provided for electrodes in each direction as in this example, it is possible to cope with disconnection of two or more electrodes.

Further, if a protective layer is not formed on the compensation electrode or if the compensation electrode is covered with a sealing glass, it is possible to prevent discharge at the intersection of the compensation electrode with the counter electrode.

The connection work in the above manner is extremely facilitated by requiring only a short connection, compared to the conventional case in which both exposed ends of the electrodes were directly connected.

FIG. 3 shows another embodiment.

In this example, correction electrodes 14, 14 are formed on the insulating layer 6 outside the seal glass 3. In this case, both exposed ends of the electrode 4 having a disconnection at part B are connected to the correction electrodes 14 and 14 through lead wires 102 and 103, respectively, and the compensation electrode 5
Lead wires 104 and 105 are connected to both exposed ends of
Correction is performed by connecting to the correction electrodes 14, 14. In this case, the connection can be easily made by bonding Au wires, etc., and the wiring length can be shortened, which has the effect of preventing disconnections, electrode shorts, etc., from occurring during the connection work.

Effects of the Invention As described above, according to the present invention, characteristic defects due to electrode breakage inside the panel can be easily repaired after panel formation, improving yield and reducing inspection and repair processes during electrode formation. It is possible to achieve this.

[Brief explanation of the drawing]

The drawings show an embodiment of the gas discharge panel according to the present invention, and FIG. 1 is a front sectional view of the gas discharge panel, and FIG. 2 is a plan view showing how to form electrodes and compensation electrodes on one glass substrate. Figure 3 shows electrodes,
FIG. 7 is a plan view showing another example of connection between compensation electrodes. In the figure, 1 and 2 are glass substrates, 3 is a sealing glass (sealing member), 4 and 9 are electrodes, 4a, 4b, 5
a, 5b are exposed ends, 5, 10 are compensation electrodes,
6 and 11 are insulating layers, 7 and 12 are protective layers, 8 is a display portion, 13 is a sealed space, and 14 is a correction electrode.

Claims (1)

[Claims] 1. A first substrate on which a plurality of first electrodes are formed in parallel on the upper surface, and a second substrate on which a plurality of second electrodes are formed on the lower surface in parallel. The first and second substrates are made to face each other with a gap therebetween so as to be perpendicular to each other, and the peripheries of the two substrates are bonded together via a sealing member, and a discharge gas is sealed in the gap.
In a gas discharge panel in which both ends of the second electrode are exposed outside the sealing member, a compensation electrode for connecting the exposed ends of the disconnected electrode is provided on a non-display portion of the opposing surface of each substrate. A gas discharge panel characterized in that both ends are exposed to the outside of the sealing member.