KR19990021642U - Getter Mount for Flat Panel Display - Google Patents

Abstract

The present invention relates to a getter mounting device for a flat panel display such as a field emission device or a PDP. The getter mounting device is formed by binding a bulk unit getter consisting of a plurality of units by a getter holder, and then mounting the getter holder in a getter chamber after manufacturing the panel. It can be maximized, the getter can be easily fixed without moving using the DUMET wire, and the exhaust tubing is configured on the side of the panel to make the overall thickness of the panel extremely thin. It is a technology that can shorten the hot exhaust process by improving.

Description

Getter Mount for Flat Panel Display

The present invention relates to a getter mounting device for a flat panel display, and in particular, a field emission display (FED) or other flat panel display, for example, a plasma display panel (PDP) or a vacuum display panel (VFD). When forming a panel of a flat panel display such as the exhaust tubing and the getter chambers are attached at the same time, a plurality of bulk type getters are fixed to the dummet wire using a getter holder to install the getters. The present invention relates to a getter mounting apparatus of a flat panel display that can prevent damage and facilitate mounting of the getter and at the same time maximize the effect of the getter.

Among flat panel display devices, when a high electric field is applied to a metal or a conductor in a vacuum, electrons are emitted from the solid through quantum mechanical tunneling out of the vacuum, and the emitted electrons are applied to opposite rear electrodes. It is a display element which displays an image by hitting the fluorescent layer formed on the electrode and accelerating by the voltage which is emitted.

The FED device includes a top plate on which a fluorescent layer and a transparent electrode are formed, and a bottom plate on which a cathode array and a gate electrode are formed, and a spacer for maintaining a constant gap between the top plate and the bottom plate. ) Is located.

In addition, the edge portion where the upper and lower plates meet is tightly sealed by a sealing material so as to maintain a high vacuum.

In the prior art of forming a panel of a flat panel display including an FED, when the upper and lower panels of the panel are attached to each other to form the panel, the getter is also introduced into the panel, which causes damage to the getter. This is because the sealing process of the lower plate is carried out in a high temperature process of about 450 ℃ or more.

Therefore, even in the case of a pretable getter that preserves a certain lifetime in the high temperature process, the getter is exposed to the atmosphere or a specific gas in the high temperature process, and thus the evaporation is performed by the primary high temperature process before the getter evaporates. Even if the getter evaporates in the process, there is a problem in that the getter's evaporation effect cannot be sufficiently expected.

In addition, conventionally, the exhaust conductance becomes very bad by drilling an exhaust hole in the lower plate (cathode plate) of the panel and attaching the exhaust pipe on the exhaust hole to exhaust the exhaust hole.

Therefore, the present invention is intended to solve the above problems, and in the present invention, in a display device requiring high vacuum exhaust, there is a meaning to establish a getter process for high vacuum exhaust or high vacuum maintenance, and particularly, The objective is to avoid the long time required for high vacuum exhaust as the size of the panel gets bigger, and to make the getter mounting easier and maximize the gettering effect by configuring the exhaust tubing for inserting the getter on the side of the panel. In addition, to provide a getter mounting apparatus of a flat panel display that can improve the exhaust conductance.

1A is a view showing a state where a getter is mounted on a FED panel of a flat panel display according to the technique of the present invention;

FIG. 1B is a cross-sectional view taken along the line A-A of FIG. 1A

2A and 2B illustrate a state in which a plurality of bulk type getters are coupled by a getter holder in accordance with the techniques of the present invention.

<Explanation of symbols for main parts of drawing>

1: upper board 3: lower board

5: unit getter 7: exhaust pipe (getter guide tube)

9: Dummet wire 11: Getter chamber

13: getter fixture

The getter mounting apparatus of the flat panel display of the present disclosure for achieving the above object,

A getter mounting chamber installed on one side of the panel formed by aligning the upper and lower substrates;

Exhaust tubules inserted into the chamber from both sides of the getter mounting chamber by a predetermined length and serving as a passage during high vacuum exhaust inside the panel;

A getter mounted in the getter mounting chamber, wherein a plurality of unit getters are integrally bound by a getter holder;

It is characterized in that it comprises a Dummet wire is bound to the getter fixture to mount or secure the getter in the chamber.

Hereinafter, a preferred embodiment of a getter mounting apparatus of a flat panel display according to the present invention will be described in detail with reference to the accompanying drawings.

1A is a view showing a state where a getter is mounted on a FED panel of a flat panel display according to the present invention;

FIG. 1B is a cross-sectional view taken along the line AA of FIG. 1A.

Referring to the drawings, the upper substrate 1 and the lower substrate 3 of the FED panel are aligned and sealed. At this time, the getter mounting chamber 11 and the exhaust pipe tubing 7 (getter guide) are mounted and manufactured at the same time when manufacturing the FED panel.

Thereafter, the getter 5 and the getter fixing wire 9 are introduced through the exhaust pipe 7, and the getter fixing wire 9 is fixed by sealing the pipe opposite the exhaust pipe 7.

2a and 2b is a view showing the shape of the getter applied in the embodiment of the present invention.

The getter 5 of the present invention is configured in such a manner that the bulk type unit getter is coupled by the getter holder 13, and in particular, the getter holder 13 that couples the unit getter 5 has two types as shown. It can be configured as.

That is, as shown in FIG. 2A, the lower end 15 of the getter holder of the getter holder positioned at the bottom of the unit getter is bent in one direction so that the upper unit getter does not flow down, and the upper part of the getter located at the top of the getter holder has a horizontal direction. By binding the Dumet wire (9) was configured so that the unit getter does not move.

In this case, only a portion of the getter guide 7 is fixed to the portion where the dumet wire 9 is fixed.

On the other hand, in the case of Figure 2b is a form in which the getter holder 17, which binds the plurality of unit getters 5, extends in a straight line. In this case, the dummet wire 9 is formed at one side of the getter guide 7 It is fixed, and at the same time it is fixed at the same time when the exhaust port is sealed, so that the fixed part is two places.

Therefore, after fabrication of the panel, the getter 5 manufactured as shown in FIG. 2A or 2B is welded and fixed to the dummet wire 9, and inserted into the getter chamber 11, and then the getter guide part 7 is melted to form a dummet wire ( 9) and suture together.

At this time, the portion to be sealed is a portion through which the Dumet wire 9 passes, and the method of sealing is by melting the bag chamber 11 by using a heater for sealing a torch or a tubule.

As described above, the getter 5 of the present invention is fixed in the getter guide on one side, that is, the exhaust pipe 7, and on the opposite side, the hot wire is fixed at the tip-off after the high temperature exhaust is finished.

At this time, the getter back chamber 11 used is made of the same material as the upper and lower substrates 1 and 3, and the getter guide tube 7 is melted and sutured while having similar thermal expansion coefficients to the upper and lower substrates 1 and 3. Suitable materials are used, for example, lead glass.

On the other hand, the unit getter 5 applied in the embodiment of the present invention as shown in Figure 2a and 2b is a bulk type getter, for example, a unit getter having a cylindrical shape of a predetermined length through-hole formed in the inner center It can be formed, and is integrally bound using the getter holder (13). Further, in order to mount the getter 5 in the bound state in the chamber, the getter 5 is bound by welding using the dummet wire 9.

The dummet wire 9 can be used as a getter support by placing it in a thin glass tube, i.e., a getter guide tube 7, and then heating the wire 9 to be integral with the glass tube 7. In this case, since the glass surrounds the Dumet wire 9, the amount of outgassing coming out of the Dumet wire 9 can be reduced, and the dummet wire 9 can be obtained even if the glass part is broken by the impact. 5) can continue to support.

After fixing the getter 5, the panel is attached to a device capable of high temperature exhaust, and subjected to sufficient high temperature exhaust before tip-off.

On the other hand, the getter 5 of the present invention used in the above can be used for both low temperature activation of the low temperature activation of 350-450 ℃ and high temperature activation getter of 800 ℃ or more, that is 800 ~ 1000 ℃ temperature, especially in the case of low temperature activation getter There is no need to go through the activation process to activate the getter after the high temperature exhaust temperature is more than 350 ℃.

In the case of high temperature activation, the high temperature activation may be performed by applying a current through the dummet wire 9 again after tip-off.

According to the technique of the present invention described above, after the bulk type unit getters are bound by the getter holder, the gettering effect can be maximized using fresh getters by mounting them in the getter chamber after fabrication of the panel. The getter can be easily fixed without moving by using a wire, and the exhaust tubing is located on the side of the panel to make the overall thickness of the panel extremely thin. The exhaust conductance is improved to improve the high temperature exhaust process. It can be shortened.

Claims (4)

A getter mounting chamber installed on one side of the flat panel display panel formed by aligning and sealing the upper and lower substrates; Exhaust tubules inserted into the chamber from both sides of the getter mounting chamber by a predetermined length and serving as a passage during high vacuum exhaust inside the panel; A getter mounted in the getter mounting chamber, wherein a plurality of unit getters are integrally bound by a getter holder; The getter mounting device of the flat panel display, characterized in that it is attached to the getter fixture to mount or secure the getter in the chamber. The method of claim 1, The getter holder is a getter mounting device of the flat panel display, characterized in that formed to be bent in the lateral direction to the end of the fixed stand that is out of the unit getter located at the bottom. The method of claim 1, The getter fixing unit is a getter mounting device of the flat panel display, characterized in that to bind the unit getter in a straight line form, to prevent the departure of the unit getter by binding a dummet wire to the upper and lower unit getter of the upper unit getter. The method according to any one of claims 1 to 3, The unit getter is a getter mounting apparatus of the flat panel display, characterized in that formed in a cylindrical shape of a predetermined length having a through hole formed in the inner center.