JPH0367437A - Gas discharge display device - Google Patents

Abstract

PURPOSE:To increase the size of a discharge area and improve display quality by covering multiple cathode electrodes faced to multiple anode electrodes via discharge gas with a specific film layer. CONSTITUTION:Anode electrodes 4 provided in the required direction on a window glass 8 having a seal glass 6 and cathode electrodes 2 provided in the perpendicular direction to electrodes 4 on a base glass 1 having partitions 3 are installed face to face via discharge gas between glasses 5 and 1. The electrode 2 is coated with a magnesium oxide film layer 2a, the discharge area formed by electrodes 2 and 4 is expanded, and display quality is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a gas discharge display device, and particularly relates to an improvement of a cathode electrode of a gas discharge display device.

[Conventional technology]

FIG. 2 is a perspective view showing the internal structure of a conventional gas discharge display device.

As shown in the figure, the conventional device has a base glass 1
A cathode electrode 12 is provided on the cathode electrode 1, and a partition wall 13 extending in a direction perpendicular to the cathode electrode 12 is provided on the cathode electrode 12. On the other hand, on the window glass 15 provided opposite to the base glass 11, a transparent anode $[! 14 is formed. The base glass 11 and the window glass 15 are sealed near their peripheries with a seal glass 16 to form an airtight space between the two glasses 11 and 15, and this space is filled with a rare gas. In addition, the cathode electrode 12 and the anode electrode 1
4 is an external electrode 17 (made of Ag paste with good adhesion to the seal glass 16) under the seal glass 16.
The external electrode of the anode electrode 14 is connected to the anode (not shown).

When a voltage is applied between the cathode electrode 12 and the anode electrode 14 through the external electrode, a discharge occurs at the intersection of the cathode electrode 12 and the anode electrode 14, and light is output to the outside through the window glass 15.

[Problem to be solved by the invention]

However, in the above conventional example, the cathode electrode 1
Even if the area of the intersection between 2 and the anode electrode 14 (area of the discharge cell) is increased, if the area exceeds 0.06 mm, the discharge area will spread over the entire discharge cell and the light emitting area will become large. There was a problem in that display quality could not be improved because the display quality did not change.

Therefore, the present invention has been made to solve the problems of the prior art as described above, and its purpose is to:
An object of the present invention is to provide a gas discharge display device with excellent display quality.

[Problem to be solved by the invention]

A gas discharge display device according to the present invention includes: a pair of glass plates arranged opposite to each other; a plurality of anode electrodes arranged in a predetermined direction on an inner surface of one of the pair of glass plates; A plurality of cathode electrodes arranged in a direction perpendicular to the anode electrode and the vicinity of the periphery of the pair of glass plates are sealed on the other inner surface of the plate to allow discharge gas to flow between the pair of glass plates. The gas discharge display device has a sealing member that forms a gas space for sealing, and is characterized in that a coating layer containing magnesium oxide is provided on the plurality of cathode electrodes.

[For production]

The present invention increases the size of the discharge area generated at the intersection between the cathode electrode and the anode electrode by covering the plurality of cathode electrodes 2 with a coating layer containing magnesium oxide.

〔Example〕

The present invention will be explained below based on illustrated embodiments.

FIG. 1 is a perspective view showing the internal structure of an embodiment of a gas discharge display device according to the present invention.

As shown in the figure, in the gas discharge display device of this embodiment, a plurality of cathode electrodes 2 extending in parallel in a predetermined direction are provided on a base glass 1, and on the cathode electrodes 2, N containing magnesium oxide MgO
The covering layer 2a is formed by thick film printing of i-paste.

On the base glass 1 and the coating layer 2a of the cathode electrode 2, there are a plurality of partition walls 3 extending in a direction perpendicular to the cathode electrode 2.
is formed by thick film printing. This partition wall 3 separates the cathode I#12 into each discharge cell and provides a space above the cathode I#12 for discharge of a certain size.

On the other hand, a window glass 5 is provided at a position facing the base glass 1, and a transparent anode electrode 4 is provided on the window glass 5, extending between the space u3 in a direction orthogonal to the cathode electrode 2. .

The base glass 1 and the window glass 5 are sealed near their peripheries with a seal glass 6, and a discharge gas made of rare gas or the like is sealed between the two glasses 1.5.

Further, on the base glass 1 and on the window glass 5, a plurality of external electrodes 7 (anode An external electrode of the electrode 4 (not shown) is provided.

In this embodiment having the above configuration, 10wt of magnesium oxide powder (particle size of 1 μm or less) was applied on the cathode electrode 2.
% or 30 wt% when coated with Ni paste (manufactured by DuPont, product number 9535).
The area of 2 cathode electrodes per cell is 0.06 mm2
Even in this case, it was confirmed that the discharge spread to the metal body on the surface of the cathode electrode 2. Therefore, according to the gas discharge display device of this embodiment, display quality can be improved.

In the above embodiment, the case where the covering layer 2a is provided on the cathode electrode 12 and the partition wall 3 is formed on the covering layer 2a is explained, but the present invention is not limited to this, and the case where the covering layer 2a is provided on the cathode electrode 2 is described. After forming the partition wall 3, the cathode electrode 2
Alternatively, an organometallic solution of magnesium oxide may be applied onto the partition wall 3 to form a coating layer of magnesium oxide.

〔Effect of the invention〕

As explained above, in the present invention, a coating layer containing magnesium oxide is formed on the cathode electrode so that the discharge spreads over the entire surface of the cathode electrode, so that the display quality can be improved. .

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the internal structure of an embodiment of a gas discharge display device according to the present invention, and FIG. 2 is a perspective view showing the internal structure of a conventional gas discharge display device. DESCRIPTION OF SYMBOLS 1... Base glass (glass plate), 2... Cathode electrode, 2a... Coating layer, 3... Partition wall, 4... Anode electrode, 5... Window glass (glass plate), 6 ... Seal glass (sealing member), 7... External electrode.

Claims (1)

[Claims] A pair of glass plates arranged opposite to each other; a plurality of anode electrodes arranged in a predetermined direction on the inner surface of one of the pair of glass plates; A plurality of cathode electrodes are arranged on the inner surface in a direction perpendicular to the anode electrode, and the vicinity of the periphery of the pair of glass plates is sealed to seal discharge gas between the pair of glass plates. and a sealing member forming a gas space, the gas discharge display comprising: a coating layer containing magnesium oxide on the plurality of cathode electrodes.