JPH03236143A - Vacuum container for display device - Google Patents

Abstract

PURPOSE:To obtain a lightweight and thin vacuum container by providing multiple box type back plates made of metal on the back of a front plate, and providing a pressure difference between multiple vacuum chambers formed by multiple back plates. CONSTITUTION:Electrode body structures including external extracting terminals are arranged on the back of a front plate 1 made of a transparent glass plate, and a back plate 2 and a back plate 3 are hermetically connected to the back periphery of the front plate 1 to obtain the vacuum container of a display device. Evacuation pipes 4, 5 for independently exhausting multiple vacuum chambers 6, 7 are provided on the back plates 2, 3, a pressure difference is provided between multiple vacuum chambers 6, 7, thereby the atmospheric pressure can be separately applied to respective back plates 2, 3. The lightweight and thin vacuum container of a display device can be obtained.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a vacuum container for a display device.

Conventional Technology Example: FIG. 4 shows a sectional view of a joint portion of a vacuum container of a conventional display device. However, the electrode structure including the external lead-out terminal is omitted, but the external lead-out terminal (
A vacuum container for a display device can be obtained by arranging an electrode assembly (not shown) including a molded back plate 12 made of glass and airtightly joining it to the peripheral edge of the back surface of the front plate 1. In this example, atmospheric pressure is supported by the outer back plate, and the pressures in the two vacuum chambers (which are almost the same) are different from the present invention. Problems to be Solved by the Invention In the vacuum container for a display device configured as described above, if the vacuum container for the display device is made larger and is made to withstand atmospheric pressure, the thickness of the back plate becomes thicker and the weight increases. 1 = 2 When an electrode assembly including an external lead terminal is placed on the back side of the front plate and the molded glass back plate is hermetically joined with low melting point solder glass, low melting point solder is used. The temperature of the electrode assembly rises to the melting temperature of glass, causing distortion and the like in the electrode assembly.An object of the present invention is to provide a vacuum container for a display device that can solve the above-mentioned problems.

The means to solve the problem and the means to solve the above problem are vacuum containers,
Consisting of a front plate made of a transparent glass plate and a box-shaped metal back plate bonded to the periphery of the back surface of the front plate L. A plurality of these back plates are used, and a pressure difference exists between the plurality of vacuum chambers formed by the back plates. It is to establish.

Function: A vacuum container for a display device consisting of a front plate made of a transparent glass plate and a box-shaped metal back plate bonded to the periphery of the back surface of the front plate, and the back plates are formed by a plurality of back plates. It has a plurality of vacuum chambers, and the plurality of back plates are provided with exhaust pipes for independently evacuating the plurality of vacuum chambers, and the plurality of vacuum chambers are provided with a pressure difference, so that each back plate has a large capacity. It has a structure that applies atmospheric pressure in parts, making it a lightweight and thin vacuum container for display devices.Also, by having multiple side plates molded separately and welding them to the back plate, work can be done at room temperature, and the electrode structure etc. can be kept in a high temperature atmosphere. It becomes a vacuum container for the display device that is easy to handle without having to put it in the container. Also, by sharing the side plates, it becomes easy to attach the exhaust pipe and the back plate, and the inner vacuum chamber and the outer vacuum chamber can be easily evacuated.

Embodiment 1 shows a sectional view of a vacuum container of a display device in an embodiment of the present invention having a two-layer structure. However, the electrode structure including the external extraction terminal is omitted. In the first embodiment shown in FIG.
By arranging and airtightly joining the back plate 2 and the back plate 3 to the periphery of the back surface of the front plate 1, a vacuum container for the display device is obtained.

In the second embodiment shown in FIG. 2, an external lead-out terminal (not shown) is arranged on the back surface of the front plate 1, and the side plates 8 and 9 are airtightly joined to the periphery of the back surface of the front plate 1 in advance. An electrode structure (not shown) is arranged on the back side of the side plate 8 and side plate 9 and the back plate 2 and back plate 3 are welded at a welding part 10a,
The vacuum container of the display device can be obtained by airtightly joining the display device by laser welding or other welding methods in the order of 10b.
In the third embodiment shown in FIG. (not shown) are arranged, side plate 11 and back plate 2 and 3.
A vacuum container for a display device is obtained by simultaneously or separately joining them together at the welding part 10 by laser welding or other welding methods.

According to the first embodiment, since the back plate has a two-layer structure and the atmospheric pressure is divided and supported by the metal back plate, the vacuum container of the display device can be reduced in weight.

At the same time, the strain at the joint between the front plate and the back plate is reduced, and damage to the vacuum vessel due to joint strain can be reduced.According to the second embodiment, however, the joint between the side plate and the back plate is welded. The third embodiment solves the problems of the first and second embodiments, since it can be operated at room temperature and the contents including the electrode assembly do not need to be placed in a high temperature atmosphere, and there is no distortion caused by heat in the electrode assembly. The display device's vacuum container is easy to handle, since the effective screen ratio to the external dimensions of the display device does not decrease, and the exhaust pipe for exhausting the inner vacuum chamber does not pass through the outer back plate. The back plate 3 may be welded in advance to the side plate 11 as an integral structure. Evacuate space No. 6 to high vacuum.

The shape of the back plate and the side plate and the method of abutting them may be changed by methods other than those shown in the embodiments of the present invention.

Effects of the Invention The present invention (above) The back plate is made of metal, which is extremely lightweight and highly rigid compared to glass, and has a multi-layer structure, which allows it to withstand atmospheric pressure, resulting in a lighter weight. Since the back plate can be made thinner than the previous one, it becomes a vacuum container for display devices with less distortion at the joints.

[Brief explanation of drawings]

1 to 3 are sectional views of essential parts of a vacuum container in an embodiment of the present invention. FIG. 4 is a sectional view of a vacuum container of a conventional display device.

Claims (3)

[Claims] (1) A vacuum container for a display device consisting of a front plate made of a transparent glass plate and a box-shaped metal back plate bonded to the periphery of the back surface of the front plate, wherein the back plates are plural and the back plate A plurality of vacuum chambers are formed, an exhaust pipe for independently evacuating the plurality of vacuum chambers is provided on the plurality of back plates, and a pressure difference is provided between the plurality of vacuum chambers. Vacuum container for display device. (2) Vacuum of a display device consisting of a front plate made of a transparent glass plate, a metal side plate bonded to the periphery of the back surface of the front plate, and a box-shaped metal back plate bonded to the end surface of the side plate. 2. The vacuum container for a display device according to claim 1, wherein the number of said side plates is the same as that of said back plate, and a joint between said back plate and said side plate has a welded structure. (3) A display device consisting of a front plate made of a transparent glass plate, a metal side plate bonded to the periphery of the back surface of the front plate, and a box-shaped metal back plate bonded to the end surface of the side plate. 3. The vacuum container for a display device according to claim 2, wherein said back plate is plural, said side plate is shared, and exhaust pipes are provided on said side plate and said back plate.