JPH03254042A - Manufacture of discharge container - Google Patents

Abstract

PURPOSE:To stabilize starting voltage by activating a getter at a temperature higher than a working temperature and sealing it in a sealing process at a glass melting temperature higher than an activation temperature of the getter. CONSTITUTION:A plurality of electrodes 21, 22 are formed on a board 23 consisting of a translucent material and later barrier ribs 24 are laminated by using low melting point glass, in which a getter is mixed, followed by forming a sealing layer 25 to constitute an electrode board 20. The board 20 and a phosphor board are aligned in their positions to be inserted into a vacuum device to be heated up to a temperature lower than a softening point of the low melting point glass to perform gas exhaustion. After exhaustion of gas, vacuum exhaustion is performed at a temperature higher than working temperature of the getter and discharge gas is charged to be heated up to the melting temperature of the low melting point glass for sealing. Later, the getter is made to work to absorb and remove impure gas generated at the time of sealing. Thereby, a discharge container having high brightness and stable characteristics can be obtained.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a method for manufacturing a discharge vessel.

[Prior Art] Conventionally, as a method for manufacturing this type of discharge vessel, there is a method disclosed in, for example, Japanese Patent Laid-Open No. 193229/1983.

In this manufacturing method, as shown in FIG. 2, segment electrodes 6, dielectric 7, discharge cells 8, and low melting point glass are printed in this order on glass substrate 1, and cold cathode 9 is applied to form glass.

FIG. 3 shows a cross-sectional view of the windshield l and the rear glass 5 in the vacuum device 12. After the windshield 1 and the rear glass 5, which have low melting point glass printed on their sealing surfaces, are butted together, the fixing jig is 13, set it in the vacuum device 12, heated it to about 400°C while exhausting the inside, and performed cold cathode decomposition while venting the gas.
After injecting discharge gas at a vacuum degree of 1O-5 Torr,
The windshield 1 and the rear glass 5 are heated to 440'C to melt the low melting point glass and seal the two glasses 1 and 5 together.

[Problem to be solved by the invention]

The conventional method for manufacturing a discharge vessel is as described above, so for example, the windshield 1 and the rear glass 5 are
After heating to 0°C and venting gas, gas exhaust was stopped at 10-' Torr, discharge gas was filled in, and then heating was performed to 440°C for sealing. However, after stopping the gas exhaust, the
Heating to 0°C causes outgassing. For this reason, in a panel configured as described above, the getter cannot be inserted into the panel, and the gas released during sealing cannot be removed, resulting in a low discharge starting voltage and unstable startup. .

This invention was made to solve the above-mentioned problems, and when the getter mixed in the low-melting point barrier rib or applied to the surface is activated, it is released when the low-melting point barrier rib of the panel is melted and sealed. It is an object of the present invention to provide a method for manufacturing a discharge vessel that can adsorb impure gas in a short time or adsorb gas emitted by ion bombardment during panel operation and obtain a stable starting voltage.

[Means to solve the problem]

A method for manufacturing a discharge vessel according to the present invention includes an electrode substrate having a plurality of electrodes made of a conductive layer and a phosphor, or a plurality of electrodes and a phosphor, and a phosphor substrate facing the electrode substrate. A getter is mixed into or coated on the surface of the low melting point barrier lip between the two substrates and the side forming the discharge space, and the barrier rib is interposed to form a discharge vessel assembly, and a rare gas is introduced into the inside of the getter. In the manufacturing method of the sealed discharge vessel, the getter mixed in the barrier ribs or applied on the surface is activated in a vacuum chamber at a temperature higher than the operating temperature, and in the process of sealing the discharge vessel, the melting temperature of the glass to be sealed is increased. It is characterized by sealing at a temperature higher than the activation temperature of the getter.

[For production]

In this invention, a getter is mixed into or applied to the surface of a low melting point barrier rib, the low melting point barrier rib is interposed to form a discharge vessel assembly, and the getter mixed into or applied to the barrier rib is kept at an operating temperature in a vacuum chamber. Activates at a higher temperature and seals the discharge vessel By sealing at a temperature where the glass melting temperature is higher than the activation temperature of the gater, it has the effect of adsorbing residual impurity gas after sealing in a short time. can get. Alternatively, the effect of adsorbing the released impurity gas released by ion bombardment when the panel is driven can be obtained.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. 1st
Figures (al and b) are a perspective view and a sectional view showing a part of the electrode substrate of the discharge vessel manufactured by the manufacturing method according to the present invention, in which 20 indicates the electrode substrate, 2
1.22 is an electrode formed on a substrate 23 made of a transparent material. Reference numeral 24 designates a low melting point barrier rib on which getter is mixed or coated on the surface of the substrate 23, and 25 is a sealing layer.

Next, a method for manufacturing the above-described discharge vessel will be explained. First, a plurality of electrodes 21.
22 is formed, and then barrier ribs 24 are laminated using low melting point glass mixed with a getter, followed by sealing N25.
An electrode substrate is made by forming the . Next, a phosphor substrate (not shown) 7 made of a translucent material is coated with phosphor, and after aligning the electrode substrate 20 and the phosphor substrate, the phosphor substrate is inserted into a vacuum device and After heating to a temperature lower than the softening point of the glass to release gas, evacuation to 10-'Torr, evacuation at a temperature higher than the operating temperature of the getter, and then filling with discharge gas to melt the low melting point glass. After heating to a certain temperature and sealing is completed, the getter is operated to adsorb and remove impurity gas harmful to the discharge generated during sealing, and also adsorb and remove impurity gas harmful to the discharge released by ion bombardment when the panel is driven. A discharge vessel can be manufactured using the following methods.

〔Effect of the invention〕

As explained above, according to the present invention, by mixing a getter into a low melting point barrier lip, in addition to the normal getter effect, a getter effect can be obtained for each ion bombardment caused by discharge, and impurity gas released by discharge can also be obtained. It can be removed by adsorption, thereby making it possible to manufacture a discharge vessel with high brightness and stable characteristics.

[Brief explanation of drawings]

Figure 1+a1. (bl is a perspective view and a sectional view of an electrode substrate of a discharge vessel manufactured by a manufacturing method according to an embodiment of the present invention, FIG. 2 is a constituent country of the rear glass of a discharge vessel in a conventional manufacturing method, and FIG. 3 is a It is an explanatory diagram showing a manufacturing process of a discharge container by a conventional example. 20... Electrode substrate, 21. 22... Electrode, 23...
-Substrate, 24...Low melting point barrier rib, 25...Sealing layer. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Claims] An electrode substrate including a plurality of electrodes made of a conductive layer and a phosphor, or a plurality of electrodes and a phosphor, a phosphor substrate facing the electrode substrate, and a discharge space formed between the two substrates. In the method for manufacturing a discharge vessel, the discharge vessel assembly is formed by interposing the barrier ribs by mixing a getter into or coating the surface of the low melting point barrier ribs between the side and the barrier ribs, and filling the inside with a rare gas. The getter mixed in or applied to the surface is activated in a vacuum chamber at a temperature higher than the operating temperature, and in the process of sealing the discharge vessel, the glass melting temperature to be sealed is higher than the activation temperature of the getter. A method for manufacturing a discharge vessel, characterized in that: