JPH0724189B2 - Gas discharge panel - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Outline] The present invention relates to a surface discharge type gas having a pair of sustain electrodes arranged in parallel on one side of a substrate and a selection electrode insulated and arranged in a direction intersecting with the sustain electrodes. In the discharge panel, in order to reduce the drive current flowing between the selection electrode and the sustain electrode during driving, a dielectric material that insulates the selection electrode from the sustain electrode pair is formed of a material having a low dielectric constant.

[Industrial application field]

The present invention relates to a gas discharge panel, and more particularly to a surface discharge type gas discharge panel.

In the field of information processing, an AC drive type gas discharge panel is widely used for displaying characters or figures because of its advantage of having high brightness and a memory function, and a surface discharge type gas of this type is used. Discharge panels are attracting attention because they can be easily color-converted.

[Conventional technology]

An example of a conventional surface discharge type gas discharge panel is shown in FIG. This is a gas discharge panel proposed by Japanese Patent Application No. 60-160952, in which a plurality of pairs of sustain electrodes 2 and 3 are provided in parallel on a substrate 1, and a dielectric layer 6 is provided on the sustain electrodes 2 and 3.
A plurality of partition walls 4 made of a dielectric material (dielectric constant ε = 20) are arranged in a state orthogonal to the sustain electrodes 2 and 3 via (dielectric constant ε = 20).

A selection electrode 5 is provided on one side surface of the partition wall 4. A selection discharge cell 7 is formed at the intersection of the selection electrode 5 and one sustain electrode 2, and a light emitting area display discharge cell 8 is formed between the sustain electrodes 2 and 3. Further, this panel holds the substrate 1 at a constant interval as shown in the sectional view of FIG.
The gas space 9 is formed by disposing the substrate 10 so as to face it.

When driving this gas discharge panel, an alternating electric field is applied between the selection electrode 5 and the sustain electrode 2 at the position where light emission is required. By this application, the gas filled in the gas space 9 is ionized. In this state, an alternating electric field is applied between the sustain electrodes 2 and 3 to continuously emit light from the light emitting area display discharge cell 8. Selective electrode 5 and sustain electrode 2
Indicates the address of the light emitting area display discharge cell.

Here, as a feature of this panel, a partition wall (4) is provided between the adjacent cells in order to prevent the ionized gas from leaking to the area of the adjacent discharge cell for light emitting area display. In the figure, 11 is a surface layer made of MgO.

[Problems to be solved by the invention]

The conventional surface discharge type gas discharge panel has a large electrostatic capacity between the selection electrode and the sustain electrode, so that the driving current between both electrodes when driving the panel is large, and the driving circuit is burdened. There was a problem of increasing the size.

It is an object of the present invention to provide a surface discharge type gas discharge panel having a simple structure and a small driving current in view of the above conventional circumstances.

[Means for solving problems]

In the present invention, as shown in the principle diagram of FIG. 1, the capacitance C between the selection electrode 5 and the sustain electrode 2 is the area of each corresponding electrode,
Since it is proportional to the dielectric constant of the insulating dielectric material layers 4 and 6 between the two electrodes and inversely proportional to the distance t between the two electrodes, the selection electrode 5
At least the partition wall 4 immediately below is made of a material having a low dielectric constant.

[Operation] Since the dielectric constant of the dielectric material layer immediately below the selection electrode 5 is made small, the capacitance between the selection electrode 5 and the sustain electrode 2 is reduced, the impedance of the electric field is increased, and the current during driving is increased. To reduce. Therefore, the drive power supply circuit for driving the gas discharge panel can be simplified.

〔Example〕

FIG. 2 is a cross-sectional view of essential parts showing the first embodiment of the present invention. The sustain electrode 2 is formed on the substrate 1, and the sustain electrode 2
Forming a dielectric layer 6 covering the. The dielectric constant ε of this dielectric layer 6 is 20. On this dielectric layer 6, a plurality of partition walls 4 made of a dielectric material having a dielectric constant ε = 10 are arranged in a direction perpendicular to the sustain electrodes 2. The plurality of barrier ribs 4 are formed with a space between the selection discharge cells and the light emitting area display discharge cells.

A selection electrode 5 is provided on one side surface of the partition wall 4. Therefore, the selection electrode 5 is arranged orthogonally to the sustain electrode 2 via the dielectric having the permittivity ε = 10 and 20.

FIG. 3 is a cross-sectional view of an essential part showing a second embodiment of the present invention, in which a partition wall 4 having a low dielectric constant (ε = 10) is provided directly on the sustain electrode 2 and a portion without a partition wall is dielectrically insulated. This structure is covered with the dielectric layer 6 having the ratio ε = 20.

In this structure, of course, there is no problem even if the dielectric layer 6 having a dielectric constant of 20 is formed on the sustain electrode 2 and then only the dielectric layer immediately below the selection electrode is removed and the partition wall 4 having the dielectric constant is provided there. Needless to say. The second embodiment has an advantage that the electrostatic capacity is smaller than that of the first embodiment and the drive current is further reduced.

〔effect〕

As is clear from the above description, according to the present invention, it is possible to reduce the current of the surface discharge type gas discharge panel with a simple structure having a low dielectric constant of the dielectric material layer immediately below the selection electrode,
It has an extremely effective effect in miniaturizing the panel drive power supply.

[Brief description of drawings]

FIG. 1 is a principle diagram for explaining the principle of the present invention, FIG. 2 is a sectional view of an essential part showing a first embodiment of the present invention, and FIG. 3 is a view showing a second embodiment of the present invention. Partial cross-sectional view, FIG. 4 is a perspective view for explaining a conventional surface discharge type gas discharge panel, and FIG. 5 is a cross-sectional view taken along line AA of FIG. In the figure, 1 and 10 are substrates, 2 and 3 are sustain electrodes, 4 are barrier ribs, 5 is a selection electrode, 6 is a dielectric layer, 7 is a discharge cell for selection, 8 is a discharge cell for light emitting area display, and 9 is a gas. Indicates a space.

Claims (1)

[Claims] 1. One substrate (1) forming a gas-filled space
A plurality of sustain electrode pairs (2), (3) arranged adjacent to each other in parallel so as to form a pair of two sustain electrodes, and a pair of sustain electrode pairs (2),
A plurality of bank-shaped partition walls (4) made of a dielectric material arranged in a direction orthogonal to (3) via a dielectric layer (6), and the partition walls (4).
A plurality of selection electrodes (5) disposed on one side surface of the storage electrode, and a selection discharge cell (7) is provided at an intersection of one of the sustain electrodes (2) and each selection electrode (5). In the gas discharge panel having the above structure, a discharge cell for light emitting area display (8) is formed between a pair of sustain electrodes adjacent to each of the selection discharge cells (7).
Gas discharge characterized in that at least the partition wall (4) of the dielectric material layers (4) and (6) for insulating the sustain electrode pair (2) and (3) from each other is made of a dielectric material having a low dielectric constant. panel.