JPH11162360A - Plasma address display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plasma address display device, which can improve the opening factor. SOLUTION: A device has the laminated flat panel structure formed of a transmission type liquid crystal cell 102, a plasma discharge cell 101, and a transparent dielectric sheet 109 as a transparent plate material provided between both the cells 101, 102. The plasma discharge cell 101 is formed by using a glass board 104 as a transparent plate material. Plural metal thin plates 108 as electrodes, for example, Ni thin plates are stood on the glass board 104 in the condition that both side directions thereof cross at right angles to the glass board 104, and an insulating layer 107 having the predetermined thickness is provided thereon, and these metal thin plates 108 and the insulating layer 107 form partitioning walls 106.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a plasma addressed display device having a two-layer structure of a display cell such as a liquid crystal cell and a plasma discharge cell.

[0002]

2. Description of the Related Art The above-described plasma addressed display device is
Higher resolution and higher contrast can be achieved than a matrix type liquid crystal display device using a liquid crystal cell as an electro-optical cell.

The configuration of such a plasma addressed display device will be briefly described with reference to FIG. This plasma addressed display device has a laminated flat panel structure including a transmission type liquid crystal cell 2, a plasma discharge cell 1, and a transparent dielectric sheet 9 interposed between the cells 1, 2.

[0004] The plasma discharge cell 1 is formed using a glass substrate 4, and a partition wall 1 provided on the glass substrate 4 is provided.
It has a plurality of parallel grooves separated by zeros. Each groove is sealed by the transparent dielectric sheet 9 to form each plasma chamber 11. An ionizable gas is sealed in the plasma chamber 11. A pair of plasma electrodes 5 and 6 parallel to each other are provided at the bottom of each groove. The pair of plasma electrodes 5 and 6 function as an anode and a cathode, and ionize gas in the plasma chamber 11 to generate discharge plasma. Such a discharge region is a unit of row scanning.

On the other hand, the liquid crystal cell 2 is constituted using a transparent substrate 3. This transparent substrate 3 is made of a transparent dielectric sheet 9
Are arranged to face each other with a predetermined gap therebetween, and the gap is filled with a liquid crystal layer 12. A signal electrode 13 made of a transparent conductive material is formed on the inner surface of the transparent substrate 3. The signal electrode 13 is orthogonal to the plasma chamber 11 and serves as a column drive unit. The intersection between the column drive unit and the row scan unit constitutes a matrix pixel.

[0006]

By the way, in the plasma address display device using the discharge plasma as described above, it is possible to increase the area, but there are various problems in practical use.

For example, it is extremely difficult to form a high density groove for forming a plasma chamber. In addition, it is necessary to form a plasma electrode for discharge in each groove, but the printing / etching process for forming this electrode is complicated, and it is also difficult to accurately maintain the interval between a pair of plasma electrodes. .

Although the structure of the plasma addressed display device of the above-described example is of a transmission type, when the plasma electrode is made of an opaque thick conductive material, the opaque plasma electrode absorbs incident light. In order to block the portion, the aperture ratio is sacrificed, and sufficient image brightness cannot be obtained. This trend is
This is more remarkable as the pitch of the plasma electrode is reduced for higher definition. In order to improve the aperture ratio, it is conceivable to extremely narrow the width of the plasma electrode itself with respect to the pitch of the plasma electrode. However, in such a case, the voltage drop becomes remarkable, and the discharge area in the plasma chamber 11 becomes large. Is lost.

SUMMARY OF THE INVENTION The present invention has been made to solve such problems of the prior art, and has as its object to provide a plasma addressed display device capable of improving the aperture ratio.

[0010]

According to the plasma address display device of the present invention, a plurality of plasma chambers separated by a partition are provided between a pair of transparent plates which are disposed opposite to each other at a predetermined interval. In a plasma address display device in which display cells are stacked for a given plasma discharge cell,
A partition partitioning the plasma chamber includes a plate-like electrode provided upright on one of the pair of plate members, and an insulating layer provided between the plate-like electrode and the other plate member. The constituent plate-like electrode functions as a plasma electrode, thereby achieving the above object.

In the plasma addressed display device according to the present invention, a pair of transparent plate members opposed to each other at a fixed interval are provided.
For a plasma discharge cell in which a plurality of plasma chambers are provided separated by partition walls, in a plasma addressed display device in which display cells are stacked, a partition partitioning the plasma chambers is one of the pair of plate members. An electrode wire disposed on a plate material, and an insulating layer provided between the electrode wire and the other plate material, the electrode wire constituting the partition functions as a plasma electrode, thereby achieving the above object. Achieved.

The operation of the present invention will be described below.

According to the present invention, a plate-like electrode or an electrode wire functioning as an anode or a cathode is formed as a part of a partition. Therefore, as compared with the conventional structure, the amount of incident light increases and the aperture ratio can be improved.

[0014] Further, the conventional partition wall is formed by lamination printing, but in the formation of ribs by the lamination printing, printing → drying must be repeated 10 times or more.
In addition, even in the formation of an electrode at another position, the printing and drying must be repeated several times, so that the tact time is very long. On the other hand, in the configuration of the present invention, the rib formation and the electrode formation of the insulating layer constituting the partition can be performed at the same position, and therefore, the workability can be greatly improved.

[0015]

Embodiments of the present invention will be described below in detail with reference to the drawings.

(Embodiment 1) FIG. 1 is a sectional view showing an embodiment of a plasma addressed display device according to the present invention.

This plasma addressed display device has a laminated flat panel structure comprising a transmission type liquid crystal cell 102, a plasma discharge cell 101, and a transparent dielectric sheet 109 as a transparent plate material between the cells 101 and 102. It is.

The liquid crystal cell 102 is formed using a transparent substrate 103. The transparent substrate 103 is opposed to the transparent dielectric sheet 109 via a predetermined gap, and the gap is filled with a liquid crystal layer 112. Also,
ITO on the inner surface of the transparent substrate 103 as a transparent plate material
A signal electrode 113 made of a transparent conductive material such as

On the other hand, the plasma discharge cell 101 is formed using, for example, a glass substrate 104 as a transparent plate material. On the glass substrate 104, a metal thin plate 108 that can be a plurality of electrodes, for example, a Ni thin plate is erected on the glass substrate 104 in a state where both side surfaces are orthogonal to the glass substrate 104, and is placed thereon. An insulating layer 107 having a predetermined thickness is provided.
And constitute the partition 106.

Each groove between the partition walls 106 is sealed by a transparent dielectric sheet 109, and each groove is separated from the plasma chamber 11.
1. The plasma chamber 111 is filled with an ionizable gas, for example, He, Ne, Ar, Xe, or a mixed gas thereof. The pair of partition walls 106
It functions as an anode and a cathode as plasma electrodes, and ionizes gas in the plasma chamber 111 to generate discharge plasma.

As described above, by employing the structure in which the anode and the cathode of the plasma electrode are used as they are for the partition 106, the amount of incident light can be increased and the aperture ratio can be improved as compared with the conventional structure.

(Embodiment 2) FIG. 2 is a sectional view showing another embodiment of the plasma addressed display device according to the present invention.

This plasma addressed display device has a laminated flat panel structure including a transmission type liquid crystal cell 202, a plasma discharge cell 201, and a transparent dielectric sheet 209 provided between the cells 201 and 202.

The liquid crystal cell 202 is formed using a transparent substrate 203. The transparent substrate 203 is opposed to a transparent dielectric sheet 209 as a transparent plate material with a predetermined gap therebetween, and the gap is filled with a liquid crystal layer 212. On the inner surface of the transparent substrate 203, a signal electrode 213 made of a transparent conductive material such as ITO is formed.

On the other hand, the plasma discharge cell 201 is formed using, for example, a glass substrate 204 as a transparent plate material. On the glass substrate 204, a metal wire 208 that can be an electrode, for example, a Ni wire of Φ30 μm to Φ50 μm is provided. On the metal wire 208, an insulating layer 207 having a predetermined thickness, for example, an insulating layer made of glass paste Is provided. These metal wires 208 and insulating layer 20
7 constitute a partition wall 206. However, the metal wire 208
It is preferable that the metal wire 208 be provided so that most of the metal wire 208 is exposed inside the plasma chamber 211, avoiding a state in which the metal wire 208 is embedded in the insulating layer 207.

Each groove between the partition walls 206 is sealed by a transparent dielectric sheet 209 as a transparent plate material, and each constitutes a plasma chamber 211. This plasma chamber 211
Gas that can be ionized into, for example, He, Ne, Ar, Xe
Alternatively, the mixed gas is sealed. A pair of partition walls 2
The 06 metal wire 208 functions as an anode and a cathode as plasma electrodes, and ionizes the gas in the plasma chamber 211 to generate discharge plasma.

As described above, by using the two metal wires 208 functioning as the anode and the cathode of the plasma electrode as a part of the partition wall 206, the amount of incident light is increased as compared with the conventional structure, and the aperture ratio is reduced. Can be improved.

Further, in the structure of the present invention, the rib formation and the electrode formation of the insulating layer 207 constituting the partition wall 206 can be performed at the same position, so that the workability can be greatly improved. In other words, conventionally, lamination printing is used for rib formation, and in the case of the lamination printing, printing → drying must be repeatedly performed 10 times or more.
Since printing → drying must be repeated several times even in electrode formation performed at another position, the tact time was extremely long, but it can be formed at the same place, and the number of printing and drying is also reduced Because you can. This is particularly effective in the case of Embodiment 1 in which the number of times of printing and drying is small.

[0029]

As described in detail above, according to the present invention,
Since a part of the partition functions as a plasma electrode, the aperture ratio can be greatly improved as compared with the conventional structure, and the amount of incident light can be increased. Further, since the rib formation and the electrode formation of the insulating layer constituting the partition can be performed at the same position, the workability can be improved.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a plasma addressed display device according to a first embodiment of the present invention.

FIG. 2 is a sectional view showing a plasma addressed display device according to a second embodiment of the present invention.

FIG. 3 is a cross-sectional view illustrating a conventional plasma addressed display device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 101 Plasma discharge cell 102 Liquid crystal cell 103 Transparent substrate 104 Glass substrate 106 Partition 107 Insulating layer 108 Metal thin plate 109 Transparent dielectric sheet 111 Plasma chamber 112 Liquid crystal layer 113 Signal electrode 201 Plasma discharge cell 202 Liquid crystal cell 203 Transparent substrate 204 Glass substrate 206 Partition 207 Insulating layer 208 Metal wire 209 Transparent dielectric sheet 211 Plasma chamber 212 Liquid crystal layer 213 Signal electrode

Claims (2)

[Claims] 1. A display cell is stacked on a plasma discharge cell provided with a plurality of plasma chambers separated by a partition wall between a pair of transparent plate members arranged at a predetermined interval and opposed to each other. In the plasma addressed display device, a partition partitioning the plasma chamber is provided with a plate-shaped electrode erected on one of the pair of plate members, and an insulating member provided between the plate-shaped electrode and the other plate member. A plasma addressed display device comprising a layer, wherein the plate-like electrode constituting the partition functions as a plasma electrode. 2. A display cell is stacked between a pair of transparent plate members disposed at a predetermined interval and opposed to each other, with a plasma discharge cell provided with a plurality of plasma chambers separated by partition walls. In the plasma addressed display device, a partition partitioning the plasma chamber is formed by an electrode wire provided on one of the pair of plate materials and an insulating layer provided between the electrode wire and the other plate material. A plasma addressed display device in which the electrode lines forming the partition function as plasma electrodes.