KR20000001197U - Getter mounting structure for high vacuum display device - Google Patents

Abstract

The present invention relates to a getter mounting structure of a display device requiring exhaust with high vacuum, and in particular, the panel is formed by aligning the upper and lower substrates of the panel and sealing them; A sealing frame mounted on the lower substrate of the panel, a getter mounted inside the sealing frame, and a getter fixing frame which is manufactured integrally with the sealing frame and firmly mounts the getter inside the panel. The high vacuum display device minimizes the getter damage by increasing the display screen of the panel by using the sealing frame and the fixed frame integrated with the sealing frame and performing the sealing process in the high vacuum chamber without requiring a separate jig for fixing the getter. For a getter mounting structure.

Description

Getter mounting structure for high vacuum display device

The present invention relates to a getter mounting structure of a display device requiring exhaust with high vacuum. In particular, the display screen of the panel is increased by using a sealing frame and a fixed frame integrated with a sealing frame without a separate fixture for fixing the getter, and the sealing process is performed in a high vacuum chamber. The present invention relates to a getter mounting structure for a high vacuum display device which minimizes getter damage by executing in-house.

In general, a display device such as a field emission display (FED), 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. Electrons are accelerated by the voltage applied to the opposite rear electrode and strike a fluorescent layer formed on the electrode to emit light.

The field emission display (FED) device includes a top substrate on which a fluorescent layer and a transparent electrode are formed, and a bottom substrate on which a cathode array and a gate electrode are formed, and between the top substrate and the bottom substrate. Spacers are provided to maintain a constant distance from each other.

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

However, the prior art requires a separate jig for securing the getter and a back chamber for getting the getter in the process of mounting the getter inside the panel, thereby reducing the overall thickness of the panel.

In addition, since a conventional method of exhausting exhaust gas by using an exhaust tubule has been generally used, there is a problem that the exhaust conductance is lowered and the exhaust speed is lowered.

Accordingly, the present invention is made to solve the above problems, the object of the present invention is to reduce the total thickness by effectively mounting the getter using a getter fixing frame integrally attached to the sealing frame without a separate jig, The present invention provides a getter mounting structure for a high vacuum display device which minimizes getter damage during sealing.

1 is a cross-sectional view of a panel having a getter mounting structure for a high vacuum display device according to the present invention

2A and 2B are plan views showing first and second embodiments of a getter mounting structure according to the present invention.

<Description of the symbols for the main parts of the drawings>

1: getter 2: getter fixing frame

3: bottom substrate of panel 4: top substrate of panel

5: sealing frame

In order to achieve the above object, the getter mounting structure for a high vacuum display device according to the present invention forms a panel by aligning the upper and lower substrates of the panel and sealing them;

A sealing frame mounted on the bottom substrate of the panel,

A getter mounted inside the sealing frame;

It is characterized in that it comprises a getter fixing frame to be integrally manufactured with the sealing frame for mounting the getter firmly inside the panel.

The above and other objects and features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view of a panel having a getter mounting structure for a high vacuum display device according to the present invention, in which a panel is formed by aligning an upper substrate 4 and a lower substrate 3 of the panel and sealing them; A sealing frame 5 mounted on the lower substrate 3 of the panel, a high porous thick film (HPTF) getter 1 mounted inside the sealing frame 5, and the sealing. It is configured to include a getter fixing frame (2) is produced integrally with the frame (5) for mounting the getter (1) firmly inside the panel.

The getter 1 is mounted upright to reduce the area occupied on the display screen, and the number of getters 1 may be mounted without being limited.

In addition, the getter 1 may be selectively mounted on all one, two, three or four surfaces along the sealing frame 5, and the getter is mounted on the surface from which the pad electrode (not shown) is drawn out. To protect the electrode, an insulating layer of a thick film may be used as a protective layer on the electrode.

2A and 2B are plan views showing the first and second embodiments of the getter mounting structure according to the present invention, in which the ends of the getter 1 are mounted in a line with the getter fixing frame 2 (FIG. 2A). The end of the getter may be mounted in a looped shape towards the sealing frame 5 (see FIG. 2B).

The getter mounting structure for a high vacuum display device having the above structure is a structure suitable for a high voltage panel having a large gap between the upper and lower substrates 4 and 3 of the panel to be approximately 1 mm or more, and does not require an exhaust pipe or a getter chamber. It can be said that it is suitable for the structure. Therefore, in this case, since the height of the sealing line is at least 1 mm or more, it is difficult to form the sealing line by dispensing or printing, and thus it is most preferable to use the sealing frame 5 already formed as described above.

Hereinafter, a manufacturing process of a panel having a getter mounting structure for a high vacuum display device having the above configuration will be described with reference to the drawings.

First, the sealing frame 5 is mounted on the lower substrate 3 of the panel, and the getter 1 is fitted to the position where the getter 1 should be placed.

After that, the upper and lower substrates 3 and 4 are mounted to maintain a constant gap in the high vacuum chamber, and after the out-gassing of the panel is sufficiently performed at a high temperature of 300 ° C. or higher, the upper and lower substrates are aligned. (align) and then seal. In order to seal, the glass plate is melted while a certain pressure is applied between the upper and lower substrates 4 and 3 to raise the temperature to about 430 ° C. or more. By the above process, the sealing frame 5 is to melt down to the height of the spacer. Thus, the panel is eventually sealed to the height of the spacer, and the height of the getter is lower than or equal to the height of the spacer.

At this time, if necessary, the metal wire may be drawn out for heating the electric current. In this case, an electrode drawing hole (not shown) formed on the side of the sealing frame 5 is also performed.

When the sealing is made, it is possible to easily activate the getter 5 by the current heating method after removing the panel from the chamber. At this time, the flowing current is allowed to flow for a predetermined time according to the getter's activation temperature.

The metal electrode for current heating used in the present invention is a material similar in thermal expansion coefficient to glass, and a dumet wire is suitable.

In addition, the getter 5 in the present invention may be activated at the same time at high temperature exhaust, or may activate the getter in a way that can only heat the getter from the laser or other external after sealing.

As described above, according to the getter mounting structure for the high vacuum display device according to the present invention, the use of the fixing frame integrated with the sealing frame without a separate jig for fixing the getter, as well as the need for the getter chamber and the exhaust pipe, There is a very good effect of increasing the display screen.

In addition, by performing the sealing process in a high vacuum chamber, there is a very excellent effect that can minimize the damage of the getter.

In addition, preferred embodiments of the present invention are disclosed for the purpose of illustration, those skilled in the art will be able to make various modifications, changes, additions, etc. within the spirit and scope of the present invention, such modifications and modifications are in the scope of the utility model registration claims below It should be seen as belonging.

Claims (6)

In a getter mounting structure for a high vacuum display device, Forming a panel by aligning and sealing the upper and lower substrates of the panel; A sealing frame mounted on the bottom substrate of the panel, A getter mounted inside the sealing frame; The getter mounting structure for the high vacuum display device, characterized in that it comprises a getter fixing frame which is made integral with the sealing frame and mounts the getter inside the panel. The method of claim 1, And the getter is mounted in a straight line with the getter fixing frame. The method of claim 1, The getter is a getter mounting structure for a high vacuum display device, characterized in that the end portion is mounted in the form of a ring curled toward the sealing frame. The method of claim 1, The getter is a getter mounting structure for a high vacuum display device, characterized in that the HPTF getter. The method of claim 1, The getter is a getter mounting structure for a high-vacuum display device, characterized in that mounted on all, one, two, three or four sides along the sealing frame. The method of claim 1, A getter mounting structure for a high vacuum display device, wherein the sealing process of the upper and lower substrates of the panel is performed in a high vacuum chamber.