JPS62249334A - Direct current gas discharge type display panel - Google Patents

Abstract

PURPOSE:To simplify the manufacturing process of the titled display panel and to enlarge the color display with high accuracy by forming an anode on an insulating layer covering substrate and exposing one part thereof to a discharge space. CONSTITUTION:An anode 40 is not mounted on a face-plate 70 but interposed between a substrate 10 on which a cathode 20 is mounted and face-plate 70 while the cathode 20 and anode 40 are exposed to a discharge space 60 formed between the face-plate 70 and the substrate 10. A barrier 50 is installed by use of glass paste in the shape of cross-cut and/or stripe for intersecting to the cathode 20. Therefore, it is possible to enlarge the effective light emitting area of the display, improve the directivity and simplify the manufacturing process so as to obtain the large sized color display with high accuracy.

Description

[Detailed description of the invention] [Industrial application field] The present invention displays characters and images using DC gas discharge.

In particular, it relates to flat display panels with high M fineness for color display.

[Traditional technique navy blue]

Conventionally, high-definition color display panels using DC gas discharge were produced by IEE Transaction on Electron Devices.

Eday 22 (1975) pages 1 to 7 (■ Anal E
.

Trans, R]5Ctron Devices,
ED-22 (1975) ppl-7) and is shown in FIG. Substrate 1 made of glass etc.
A cathode 20 on which Ni paste is printed and fired is provided.

A glass paste is printed and fired to form a barrier 50 on the cathode 2.
It is formed in a stripe shape so as to be perpendicular to 0. On the other hand, a face plate 70 made of transparent glass has an anode 4 printed and fired with Ni paste or the like in a direction perpendicular to the cathode 20.
0 are provided in a stripe pattern, and in the case of color display, phosphors 80 are provided on both sides of the anode 40. A discharge space 60 is formed by overlapping the face plate provided with m% and the like and the substrate so that the anode 40 is located in the middle of the barrier 50.
and the surrounding area is sealed to withstand high vacuum.

After heating and exhausting, A r -N a , N e -A r
The panel is completed by sealing rare gases such as these at an appropriate pressure.

[Problem that the invention seeks to solve]

This display panel has a very simple structure, but as the pitch D of the display dots becomes denser (higher definition), (1) the line lad of the anode 40 cannot be ignored, and the effective light emitting area ratio of the display increases. d/r)<1/3; (2) coating of the phosphor 80 is complicated due to the presence of the anode 40; and () in order to solve the above interlayer problem, the method shown in FIG. If it is made to cover about 1/2 of the barrier 50 as shown, the direction (
When viewed from (a), part of the emitted light is blocked by the anode 40, resulting in directivity or malfunction with adjacent dots.

There were problems such as.

The object of the present invention is to provide a DC gas discharge type display panel which incorporates the excellent features of the above-mentioned prior art and solves the above-mentioned problems and has a simple structure suitable for large-sized, high-definition color display. There is a particular thing.

[Means for solving problems]

In the present invention, as shown in the cross-sectional view of FIG.
Exposure to 0.

[Effect]

According to the above-described configuration, the anode does not block light emission and the phosphor can be easily deposited, so that the drawbacks of the prior art can be overcome.

〔Example〕

Embodiments of the present invention will be described below with reference to FIGS. 1, 4, and 5.

FIG. 1 shows a part of a cross section of a panel according to an embodiment of the present invention. After printing glass paste or the like on an insulating substrate 10 made of glass or the like (not shown and may be omitted), Ni
Create multiple parallel l13if@ using paste etc.
20 is provided. Next, excluding the moving part of the cathode 20,
An insulating layer 30 is formed using glass paste or the like in the form of a substrate and/or a stripe that intersects with the cathode 20. On top of that, a plurality of anodes that are parallel to each other and intersect with the cathode 20 are formed using Ni paste or the like. 40 will be provided.

Further, on top of this, a barrier 5 is formed using glass paste or the like in the form of a base and/or a stripe that intersects with the cathode 20 so that a part of the anode 40 is exposed.
Set 0. Note that the cathode 20, the anode, and the insulating layer 30 may be formed using not only thick film technology but also thin film technology.

On the other hand, in the case of a color display, a phosphor 80 is applied to the face plate 70 made of translucent glass or the like in a portion facing the discharge space 60 formed by the barrier 50 or the like by an exposure method, a printing method, or a spraying method. etc. Note that the phosphor 8
It is recommended to blacken the faceplate or make the entire surface non-reflective, except for the 0-coated area (display area) (not shown).Lay the thus processed faceplate and substrate together, and cover the surrounding area with glass frit, etc. After using the gas and sealing it airtight, it is heated and evacuated, and in the case of color display, use xO, 1e-Xe, Ne-Xo, and when directly utilizing the luminescence of other gases, use mainly rare gases such as Ne-Ar. Complete the panel by enclosing a small amount of Hg (unnecessary for color displays or cathodes with little sputtering). Note that it is preferable to use LaBe or the like having a large secondary electron emission coefficient for the cathode 20 in terms of lower voltage and higher efficiency.

With this configuration, the effective light emitting area is increased (higher brightness and efficiency) than in the prior art, and the application of the phosphor becomes easier, and visibility is also eliminated. moreover,
It is also easier to assemble the panels, which is advantageous in terms of cost.

FIG. 4 shows another embodiment. In this example, the barrier 5
0 was provided on the face plate 70 (barrier (n) 90)
In this case, the discharge space 60 is enlarged.
Suitable when you want to increase the gap between the face plate and the board.

Other details are the same as in FIG.

FIG. 5 shows yet another embodiment. This example is suitable when the display part is rectangular, unlike the square or circular shape of the previous embodiments (see the plan view in FIG. 5), and is particularly suitable for color display. The operating area of the three poles 20 is made as small as possible, and the surface area of the insulating layer 30 is made as large as possible to provide the phosphor 80, so that the plane of each dot is rectangular as shown in FIG. It is characterized by

When formed in this way, high brightness and high efficiency characteristics can be obtained.

The discharge spaces 60 of each dot in the above example may be connected gaseously and may also be connected gaseously.

Further, although the present invention has been carried out for a two-electrode type, it can be extended to a three-electrode type, but it is basically the same as the two-electrode type.

As explained above, the present invention does not provide an electrode such as the anode 40 on the face plate 70, but provides the anode 4o between the substrate 10 on which the cathode 20 is provided and the face plate 70, and
In the discharge space 60 formed between the face plate 70 and the substrate 10, the cathode 20 and the! ! By configuring the riI pole 40 to be exposed, the effective light emitting area of the display is increased and the directivity is improved.

The process can be simplified and high-definition color doll display can be achieved.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a main part of a panel according to an embodiment of the present invention.
2 and 3; FIG. 3 is a sectional view of the main part of a panel according to the prior art; FIGS. 4 and 5 (a) are sectional views of the main part of a panel according to another embodiment of the present invention; and FIG. ) is a schematic plan view of the same figure (a). 10... Substrate, 20... Cathode, 3o... Insulating layer,
4o... Anode, 5o... Barrier, 60... Discharge space, 70... Face plate, 80... Fluorescent substance, 90... Barrier (n). Figure 1 Figure 2 Kufu 3 Figure (a) 4th circle

Claims (1)

[Claims] 1. In a matrix type DC gas discharge display panel comprising at least a face plate, a substrate, a plurality of anodes, and a plurality of cathodes, the plurality of cathodes are on the substrate, and the plurality of anodes are between the face plate and the substrate. A direct current gas discharge type display panel, characterized in that the anode and the cathode are exposed to a discharge space formed between the face plate and the substrate. 2. The DC gas discharge type display panel according to item 1, characterized in that a phosphor is provided in at least a portion of the discharge space.