JPH05225910A - Gas electric discharge display and manufacture thereof - Google Patents

Abstract

PURPOSE:To eliminate display fluctuation by applying seal glass onto substrate glass, previously treating with heat, decomposing and removing an organic component, and providing partition walls sealed between a display portion and an exhaust hole. CONSTITUTION:A gas electric discharge display is constituted of two glasses 21, 22, and a plurality of anode electrodes 26 and cathodes electrodes 24 all contained therein, where information can be displayed to the outside when the cathode electrodes 24 and the anode electrodes 26 are selected. The display is provided with partition walls 23 each made of seal glass between an exhaust hole 32 for gas generated at the time of heating inside a panel and a display portion.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas discharge display device, and more particularly to a flat plate type information display section for displaying information externally by selective emission of discharge cells arranged in a matrix. And a method for manufacturing the same.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 5, an apparatus of this type is composed of two glasses, a base glass 1 and a window glass 2, and a plurality of anode electrodes 6 are arranged on the lower surface of the window glass 2. A plurality of cathode electrodes 4 are arranged on the upper surface of the base glass 1 so as to be orthogonal to the anode electrodes 6, and the display cells are separated in parallel with the anode electrodes 6 on the window glass 2 or the base glass 1 to form a discharge space. A partition wall 5 is provided to provide a seal, and the seal glass 3 seals it to a high vacuum, and the inside is replaced with a rare gas.

Here, the sealing process will be described with reference to FIG. First, as shown in FIG. 6A, a plurality of cathode electrodes 4 are arranged on the upper surface of the base glass 1, and a window glass 2 having an anode electrode 6 formed thereon so as to be orthogonal to the cathode electrodes 4 is formed. Align and overlay. Next, as shown in FIG. 6B, a seal glass 3 made of a mixture of a seal glass component (glass frit), nitrocellulose, and a solvent is applied to the periphery of the seal glass.

Next, as shown in FIG. 6 (c), the seal glass 3 was solidified at a high temperature.

[0005]

However, in the method of manufacturing the gas discharge display device described above, the application of the seal glass is performed manually, so that the application portion of the seal glass varies and the appearance becomes undesired. In addition, since the two glass pieces are combined and then applied to the combined area, automation is difficult.

Further, since the sealing with the sealing glass is performed at the same time as the binder component (organic component) of the sealing glass is heated and decomposed and removed, the panel display portion may be affected. Further, as shown in FIG. 7, the panel has an exhaust hole 12 in the display area 10 only with a low partition wall 11. Therefore, the gas component generated from the printed matter when heating and exhausting the inside of the panel is as shown by the arrow in FIG.
Since it concentrates in the vicinity of the exhaust hole 12, it may affect the display section near the exhaust pipe and cause a difference in the characteristics of the display section.

The above-mentioned problems have been a cause of a decrease in yield. The present invention eliminates the above-mentioned problems and (1) in order to remove the influence of the generated gas at the time of thermal decomposition of the organic component at the time of sealing on the display part, the sealing glass is applied on one glass substrate and solidified. After the completion, the two glasses are aligned and sealed to prevent the display unit from being affected by the generated gas.

(2) Heating / exhaust-In order to eliminate the occurrence of display characteristic difference due to the influence on the display part due to the concentration of the gas generated from the printed matter at the time of gas replacement in the vicinity of the exhaust hole, a gap between the exhaust hole and display part A partition wall made of sealing glass is provided to prevent the concentration of gas so that the influence of the generated gas on the display portion is eliminated. (3) In order to eliminate the inconvenience of manually applying the seal glass after aligning the two glass plates and the variation in the coating width, the seal glass is preliminarily used on one of the glass substrates by using a coating device. Apply. That is, the seal glass is automatically applied so as to eliminate the variation in the application width.

It is an object of the present invention to provide a gas discharge display device having a good display quality, a high yield, and a low cost, and a method for manufacturing the same, with the above structure.

[0010]

In order to achieve the above-mentioned object, the present invention is composed of two pieces of glass, has a plurality of anode electrodes and cathode electrodes inside, and selects the cathode electrode and the anode electrode. By doing so, in the gas discharge display device for displaying information to the outside, the partition wall made of the seal glass is provided between the exhaust hole of the gas generated at the time of heating and exhausting the inside of the panel and the display portion.

Further, a gas discharge display device which is composed of two pieces of glass, has a plurality of anode electrodes and a cathode electrode therein, and displays information outside by selecting the cathode electrode and the anode electrode. In the method
After applying the seal glass to one of the glasses, heating and decomposing and removing organic components to solidify the low-melting glass, and after aligning the two glasses, reheating is performed to remelt and seal the seal glass. And the step of performing.

[0012]

According to the present invention, as described above, in the sealing step, after forming each constituent by thick film printing on each glass substrate, the seal glass is applied on one glass substrate by the coating device. It is applied, heated, and solidified. After that, the window glass and the base glass are aligned with each other and heated while applying a load, whereby the seal glass is remelted and the two glasses are sealed. After that, while heating, the gas is deaerated to a high vacuum through an exhaust pipe, and an inert gas is filled therein.

[0013]

Embodiments of the present invention will now be described in detail with reference to the drawings. 1 is a partially broken perspective view of a gas discharge display device showing an embodiment of the present invention, FIG. 2 is a view showing a gas flow inside a gas discharge display device showing an embodiment of the present invention,
FIG. 3 is a schematic top view of a gas discharge display device showing an embodiment of the present invention, and FIG. 4 is a sectional view of a manufacturing process of the gas discharge display device showing an embodiment of the present invention.

In these figures, 21 is a base glass, 22 is a window glass, 23 is a seal glass, and 24 is a glass.
Is a cathode electrode, 25 is a partition wall, 26 is an anode electrode, 3
Reference numeral 1 is a partition made of seal glass, 32 is a base glass exhaust hole, and 33 is an exhaust pipe. Hereinafter, a method of manufacturing a gas discharge display device showing an embodiment of the present invention will be described. FIG. 4 is a cross-sectional view of a gas discharge display device according to an embodiment of the present invention during the manufacturing process, and shows a cross section taken along the line AA of FIG.

First, as shown in FIG. 4A, a plurality of anode electrodes 26 and a plurality of partition walls 25 are arranged on the lower surface of the window glass 22 in parallel with the anode electrodes 26, and the periphery and the base facing the base glass are covered. The seal glass 23 is automatically applied to a position between the glass exhaust hole and the display unit by using an application device and dried at about 150 ° C. to vaporize and remove the solvent component. Then, it is heated at about 400 ° C. to decompose and remove the organic component (nitrocellulose) of the seal glass component, and at the same time, the low melting point glass is melted and adhered and solidified on the window glass. The seal glass is a mixture of commercially available low melting point glass [for example, Nippon Electric Glass Co., Ltd. LS-0206], mixed with nitrocellulose and a solvent (isoamyl acetate, etc.),
It has been adjusted to an appropriate viscosity.

Next, as shown in FIG. 4B, a plurality of cathode electrodes 24 are arranged on the base glass 21, and the base glass exhaust hole 32 and the exhaust pipe 33 connected thereto are fixed by a seal glass. Therefore, the base glass 21 and the window glass 22 are aligned and superposed. next,
As shown in Fig. 4 (c), place an appropriate weight on it and set it to 460 ° C.
The low melting point glass fixed on the window glass 22 is re-melted by heating at a certain degree, and the base glass 21 and the window glass 22 are adhered to each other by the weight of the weight and cooled, so that the low melting point glass is solidified and sealed. Be worn.

Thereafter, as shown in FIG. 4 (d), by degassing while heating at about 400 ° C. through the exhaust pipe 33, the moisture adhering to the surface of the printed matter and the baking of the printed matter could not be completely removed. Gases such as organic components are removed. At this time, as shown in FIG. 2, the flow of the gas in the panel flows around both ends of the partition wall 31 made of the seal glass. Therefore, the concentration of gas near the base glass exhaust hole 32 can be prevented. In order to prevent the inflow of gas, it is necessary that the partition wall 31 is completely adhered to both the window glass 22 and the base glass 21 and that the partition wall 31 itself is sealed so as to prevent gas from passing therethrough. Even if the partition wall 25 or the like formed on the window glass 22 is formed between the exhaust hole and the display portion, no effect is seen.

Further, after degassing to a high vacuum in a heated state, it is cooled and an inert gas (Ne, Ar, He, Xe, etc.) is introduced into the panel, the exhaust pipe 33 part is melted by heating and sealed. Stop. It should be noted that the present invention is not limited to the above embodiments, and various modifications can be made based on the spirit of the present invention, and they are not excluded from the scope of the present invention.

[0019]

As described in detail above, according to the present invention, the seal glass is applied on the substrate glass and heat-treated in advance to decompose and remove the organic components. It is possible to eliminate the influence of the decomposed gas of organic components on the display portion, and it is possible to prevent the display characteristics from varying.

Further, according to this method, it is possible to provide a seal partition wall between the exhaust hole and the display section, and this seal partition wall allows the gas generated from the printed matter during heating and exhaust to reach the display section near the exhaust hole. By eliminating the concentration of the gas, it is possible to prevent the characteristic deterioration of the display portion near the exhaust hole. Also,
Since it is possible to automatically apply the seal glass using the application device, it is possible to prevent variations in the application width of the seal glass in the application part.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view of a gas discharge display device showing an embodiment of the present invention.

FIG. 2 is a diagram showing a gas flow inside a gas discharge display device according to an embodiment of the present invention.

FIG. 3 is a schematic top view of a gas discharge display device showing an embodiment of the present invention.

FIG. 4 is a cross-sectional view (cross-sectional view taken along the line AA of FIG. 3) of the gas discharge display device during the manufacturing process according to the embodiment of the present invention.

FIG. 5 is a partially cutaway perspective view of a conventional gas discharge display device.

FIG. 6 is a perspective view of a manufacturing process of a conventional gas discharge display device.

FIG. 7 is a diagram showing a gas flow inside a conventional gas discharge display device.

[Explanation of reference numerals] 21 base glass 22 window glass 23 seal glass 24 cathode electrode 25 partition wall 26 anode electrode 32 base glass exhaust hole 33 exhaust pipe

Claims (2)

[Claims] 1. A gas discharge display device which is composed of two pieces of glass, has a plurality of anode electrodes and a cathode electrode inside, and selects the cathode electrode and the anode electrode to display information outside, A gas discharge display device characterized in that a partition made of sealing glass is provided between an exhaust hole for gas generated during heating / exhaust inside the panel and a display unit. 2. A manufacturing method of a gas discharge display device which is composed of two pieces of glass, has a plurality of anode electrodes and a cathode electrode therein, and displays information outside by selecting the cathode electrode and the anode electrode. In the method
(A) a step of applying seal glass on one glass and then heating to decompose and remove organic components to solidify the low melting point glass; and (b) align the two glasses and then reheat to seal. And a step of remelting and sealing the glass.