JPS58150243A - Manufacture of discharge display - Google Patents

Abstract

PURPOSE:To screen print an insulative barrier at the correct position while confirming the positional relation against an anode electrode through eye view (or a microscope), by employing a white color glass paste for the under layer or first insulative layer. CONSTITUTION:First insulative layer 12 which will be the under layer of the insulative barriers g1, g2,... is screen printed on the face of a substrate 2 applied with anode electrodes x1, x2,... such that one end of each anode electrode x1, x2,... is coated by predetermined width. White glass paste having such color as can be discriminated from the black anode electrode x1, x2,... of Ni paste while provides the light permeability when burnt after lamination is employed for said first insulative layer 12. Then second insulative layer or colored insulative layer 13 is laminated through the screen printing while employing same mask (screen) on the first insulative layer 12 while employing colored glass paste of conventional black, grey, etc., thereafter both insulative layers 12 and 13 are burnt to form the insulative barriers g1, g2....

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a discharge display device, in particular, an anode electrode and a cando electrode of a pair of discharge electrodes are composed of parallel electrode groups arranged in parallel in the row direction and column direction, and both electrode groups are arranged in parallel in the row direction and the column direction. The present invention relates to a method for manufacturing a so-called DC discharge matrix display device in which display is performed by discharge light emission at mutually opposing intersections of the respective electrodes of both electrode groups, which are arranged to face each other with a required spacing between them.

In this type of DC matrix display device as shown in FIGS. 1 and 2, a flat tube body (1
) is configured. One of these substrates (2) and (3), the upper substrate (2) in the figure, is a translucent glass substrate, and both substrates (2) and (3)
are facing each other with glass frit (
4) to form a flat space (5) between both substrates (2) and (3). This space (5) is filled with rare gas.

On the inner surface of one substrate (3), a plurality of parallel electrodes Y1+y2+Y3.
... is deposited and formed. On the other substrate (2), each parallel electrode Xl,
2. X3... is deposited and formed. An insulating barrier group G is formed on the substrate (2) on which the anode electrode group X is formed. In this case, each insulating barrier gl +g2 +g3 . . . of the insulating barrier group G corresponds to each node electrode Xl, X2 . X3......'s-
Laminated layers are formed on the side edges to cover the required width.

The heights of these insulating barriers gl+g2+g3 . . . are selected in accordance with the spacing between the two substrates (2) and (3). A. The node electrode group X and the cathode electrode group Y are formed by screen printing, and N1 paste is used as the conductive paste in this case. In addition, the external terminals of the anode electrode group ) and an Ag paste hermetically applied.

In this way, each a of the anode electrode group
1. x2. Insulating barrier group G regarding X3...
are separated by respective barriers g1+g2+g3 . y2. This is to prevent the glow extending along y3... from spreading. In this way, for example, each electrode Y1+Y2+ of the cathode electrode group Y
Y3... are sequentially time-divisionally given an on-potential to the other electrodes x1, 1M, and each electrode of the pole group X. x2. X3...
By sequentially or simultaneously applying an on-voltage according to the display signal to..., Taniden et al.
...yl, y2+Y3... The luminance is emitted depending on the magnitude of the potential difference depending on the display signal, and the desired display is performed by obtaining a point 11-order or line-sequential light emission image. ing. In this device, when observing the light emission from the anode electrode side, each insulating barrier g1+g
2+g3... corresponds to the anode electrode X1. N
2. Since it is formed so as to partially overlap N3..., the width in which the light emitting display can be observed, that is, the opening width, is reduced compared to a conventional display device in which an insulating barrier is formed between the anode electrodes. The display can be made larger and a brighter display can be obtained.

In a discharge display device having such a configuration, when forming the insulating barrier group G, colored insulating paste, usually black glass paste, is sequentially laminated by screen printing to improve the contrast of the luminescent display, and is made to the required height. forming an insulating barrier.

In addition, as the resolution of display devices becomes higher, the insulating barrier group G is required to have a parallelism to the anode electrode and a relative position in a direction orthogonal thereto (i.e., a position where the anode electrode is reliably exposed by a predetermined width). strictly required. However, if you use black glass paste as above,
Since the anode electrode made of Ni paste is also black, it is difficult to distinguish between the two, and parallel printing of the 114th insulating barrier, which is performed visually (or with a microscope), is difficult. Once the insulating barrier is printed with a deviation in parallelism, etc., the substrate on which the electrode is formed becomes defective and cannot be reproduced, resulting in a poor manufacturing yield.

In view of the above-mentioned points, the present invention provides a method for manufacturing a discharge display device that enables screen printing of an insulating barrier in the correct position while easily checking the positional relationship with the anode electrode visually (or with a microscope). This is what we provide.

The present invention will be described in detail below with reference to FIGS. 3 and 4.

In the present invention, when forming the above-mentioned insulating barrier group G, first, as shown in FIG. 3, the anode electrode x1. X2
From above, each anode electrode x1. A first insulating layer α, which will serve as a base layer for each of the insulating barriers gl+g2, is formed by screen printing so as to cover the negative side edge of X2 over a predetermined width. This first insulating layer α is as follows:
For example, black anode electrodes Xl, X made of Ni paste
2. Those that have a distinguishable color and have translucency when fired after lamination, such as N manufactured by Noritake.
A white glass paste such as T-100 (trade name), ESfj $4014 (trade name), etc. may be used.

Next, as shown in FIG. 4, a second insulating layer, that is, a colored insulating layer Q3) is formed on the first insulating layer by screen printing using the same mask (screen) using a colored glass paste such as ordinary black or gray. Laminate printing to the required height. As this colored insulating layer a3, for example, black glass paste such as ≠9740 (trade name) manufactured by DuPont, +4014B (trade name) manufactured by ESL, etc. can be used. After that, both insulating layers Q21 and α3) are fired to form the desired insulating barrier g.
1+ g 2... is formed. By this firing, the first insulating layer (121 becomes transparent, the second insulating layer #03)
becomes a normal colored layer.

According to this manufacturing method, when forming the insulating barrier group G, by using white glass paste for the first insulating layer Q21 serving as the base layer, the black anode electrodes x1. X2・
It becomes possible to identify... Therefore, the screen-printed first layer of insulating barrier ie the first insulating layer α is parallel to the anode electrodes x1. x2... Since it is possible to easily check visually (or with a microscope) whether or not there is overlapping, it is possible to form an insulating barrier group with high precision. Moreover, since the first insulating layer circle becomes transparent after firing, even if the first insulating layer (121) is misaligned, after adjusting the screen printing mask, the first insulating layer (121) is The subsequent colored insulating layer (13) can be formed in the correct state, improving the manufacturing yield.Also, when screen printing glass paste, the first layer of glass paste is generally easy to sag, and the second layer is It is possible to print according to the mask pattern without sagging after the eyes.Therefore, if the entire insulating barrier is made of black glass paste, the opening width L on the anode electrode side (see Fig. 2) will be narrowed.However, according to the present invention Since the first layer of insulating barrier becomes transparent after firing, the width of the opening on the anode electrode side is not narrowed due to drooping, and the aperture ratio on the anode electrode side is substantially improved. If the surface is on the anode side, a much brighter display surface can be obtained.

As described above, the present invention allows the insulating barrier group G to be formed with high precision, making it particularly suitable for application to the manufacture of this type of high-definition discharge display device.

Incidentally, on the upper side, the insulating barriers gl+g2... are connected to the corresponding anode electrodes X1, . This is a case where it is formed so as to straddle the negative side edge of X2..., but other than that, for example, adjacent anodes! It can also be applied to the case where an insulating barrier is provided at the center between the poles.

[Brief explanation of the drawing]

FIG. 1 is a front view of a discharge display device used for explaining the present invention;
FIG. 2 is a sectional view taken along the line AA in FIG. 1, and FIGS. 3 and 4 are sectional views showing steps of the present invention. (2) is the substrate, Q2+ is the first insulating layer which becomes the base layer, 03
) is a colored insulating layer, xl, X2... are anode electrodes, y
l, y2... are cathode electrodes, gl, g2...
is an insulating barrier.

Claims (1)

[Claims] an anode electrode group consisting of a plurality of parallel electrodes extending in one direction and facing the anode electrode group with a required spacing therebetween;
a cathode electrode group consisting of a plurality of parallel electrodes extending in a direction intersecting the extension direction of the anode electrode group, and each of the opposing intersections of the anamide electrode group and the cathode electrode group is used as a light emitting display portion, In a discharge display device in which the light-emitting display portion is divided by an insulating barrier group with respect to each electrode of the anode electrode group, when forming the insulating barrier group, a base layer is provided with a transparent material that can be distinguished from the anode electrode group and after firing. 1. A method for manufacturing a discharge display device, which comprises forming an insulating layer having optical properties, and then laminating a colored insulating layer to a desired height.