KR20030066907A - Display Device - Google Patents

Abstract

PURPOSE: An image display device is provided to allow the electrode to be easily led out from the vacuum container, while reducing manufacturing procedures and costs. CONSTITUTION: An image display device comprises a front container(130) having a flat outer surface; a rear container(140) coupled with the front container; an electron source disposed on the rear container; and a plurality of flat electrodes(100) for extracting, controlling, accelerating and deflecting electron beams emitted from the electrode source. The electrodes have an electrode lead-out unit(110) for receiving a voltage and a signal from an external source. The electrode lead-out unit contacts the rear container, and the part of the rear container corresponding to the electrode lead-out unit is deposited with a conductive material(120).

Description

Image Display Device

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display device such as a color television, and in particular, in installing an electrode lead portion for applying a constant voltage and signal to each electrode from the outside of the glass container, the process is simplified and there is no vacuum leakage inside the glass container. An image display apparatus is manufactured.

Conventionally, CRTs are mainly used as color television image display apparatuses. In the CRTs, depths are considerably longer than those of screens, making it impossible to produce thin-film television sets.

Therefore, EL displays, plasma displays, and the like have been developed as flat panel displays, all of which are insufficient in terms of performance such as brightness, contrast, and color reproducibility.

Japanese Patent Laid-Open Nos. Hei 3-184247 and Hei 3--205751 display a screen on a screen in order to display a high quality image comparable to a CRT on a flat panel device using an electron beam. The image display apparatus which divides into image divisions, deflects an electron beam for each division, and emits fluorescent substance, and implements a color television image as a whole is proposed.

Hereinafter, an example of the image display apparatus of the prior art mentioned above is demonstrated, referring FIG. 1 which shows the structure of a general image display apparatus.

As shown in FIG. 1, the image display apparatus of the prior art embodiment includes a back electrode 2, a linear cathode 3 as an electron beam source, an electron beam extraction electrode 4, a signal electrode 5, and a focusing electrode 6 The horizontal deflection electrode (7), the vertical deflection electrode (8) and these components are housed in a glass container (9) and a rear container (1) and sealed, and the inside of the container is vacuumed. will be.

The cathode electrode 3 is provided in the horizontal direction to generate electron beams uniformly distributed in the horizontal direction, and is provided with a plurality of bones (only four in the figure) in the vertical direction while maintaining a predetermined interval.

These linear cathodes 3 are formed by coating an oxide cathode material on the surface of a tungsten wire, for example.

The back electrode 2 is made of a flat conductive material and is provided in parallel to the linear cathode.

The lead-out electrode 4 is positioned in the screen direction above the line cathode 3 and faces a row of through-holes facing the back electrode 2 and provided at predetermined intervals in the horizontal direction, on a horizontal line facing the line cathode 3. The branch is made of a conductive plate.

The signal electrodes 5 are arranged in rows of thin and long conductive plates arranged in a plurality of vertical directions at predetermined positions at positions facing each other in each of the through holes in the lead-out electrode 4, and are drawn out in each conductive plate. The through holes of the electrode 4 have through holes of the same shape at positions opposite to each other.

The focusing electrode 6 is a conductive plate having a through hole at a position opposite to each through hole of the signal electrode 5.

The horizontal deflection electrode 7 is constituted by a conductive plate connected to two blade-shaped ends which are interlocked with each other at predetermined intervals on the same plane.

The vertical deflection electrode 8 is in a state in which the blazing conductive plates of two conductive plates connected at the ends thereof are engaged with each other at predetermined intervals on the same plane.

The screen is constructed by applying a phosphor that emits light by irradiation of an electron beam to the inner surface of the glass container 9 and a metal back layer is added thereon.

Further, the lead electrode 4, the signal electrode 5, the focusing electrode 6, the horizontal biasing electrode 7 and the vertical deflection electrode 8 are each bonded with an insulating adhesive. Reference numeral 10 is a unit cell.

It looks at the operating state of the prior art having the above configuration.

First, the heater cathode is heated by flowing a heater current to facilitate electron emission. In a heated state, an appropriate voltage is applied to the back electrode 2, the line cathode 3, and the lead-out electrode 4 to emit an electron beam on the sheet from the surface of the line cathode 3.

The electron beam on the sheet is divided into a plurality of through holes of the lead-out electrode 4 to form a plurality of electron beams 11 (only one electron beam is shown in FIG. 1).

This electron beam flow 11 is adjusted by the signal electrode 5 in response to the image signal applied to the signal electrode 5 for each electron beam flow individually.

Next, the electron beam passing through the signal electrode 5 is focused and shaped by the electrostatic lens effect of the through hole of the focusing electrode 6, and then the conductive plates adjacent to each other of the horizontal deflection electrode and the conductive plates adjacent to each other of the vertical deflection electrode. They are deflected horizontally and vertically by the potential difference applied to them.

In addition, a high voltage (for example, 10 mA) is applied to the metal back layer of the screen, and the electron beam is accelerated to high energy to impinge on the metal back and emit phosphors.

When a television screen is divided into a matrix and a collection of subdivisions, each subdivision is made to correspond to the separated electron beam as described above for each subdivision, thereby deflecting and scanning the electron beam only within each subdivision. By doing so, it is possible to project the entire screen on the screen. In addition, it is possible to reproduce a television moving picture by controlling the R, G, and B video signals corresponding to the respective images with the signal electrodes 5.

Each electrode has a structure in which a certain conductive portion protrudes from each electrode to apply a constant voltage and a signal from the outside, and an electrode terminal is connected to connect the voltage and the signal from the outside. .

That is, several terminals for applying a voltage to each electrode must be connected, and dozens of terminals must be connected to the electrodes in order to apply a signal from the outside to the signal electrode.

2 is an enlarged cross-sectional view illustrating an electrode terminal connection state in an assembled state of a conventional color flat image display device.

Dozens of electrode terminals 21 for applying an external voltage and a signal to each electrode protrusion 20 were connected one by one by welding.

However, such a welding operation involves a very complicated process, and when the metal 22 having a constant thickness is taken out of the vacuum glass formed by the front container 9 and the rear container 1 being closely attached, there is a problem of vacuum leakage. Since the connection portion between the front glass and the rear glass may occur, the width (A) must be maintained for a certain time, such that the manufacturing process is very demanding and complicated.

An object of the present invention is to solve the above problems, in connecting the protrusions of each electrode and dozens of terminals for applying an external voltage and signal to the outside glass by applying a conductive material to be connected to the outside It is an object of the present invention to provide an image display device which can improve the quality of a product by solving the problem of vacuum leakage when the process is simplified and the vacuum in the glass is achieved.

1 is an exploded view showing the configuration of a general color flat image display device;

2 is an enlarged cross-sectional view showing an electrode terminal connection state of a conventional color flat image display device;

Fig. 3 is a sectional side view of a main portion of the color image display device of the present invention.

Fig. 4 is a plan view of main parts of a color image display device of the present invention;

* Explanation of symbols for the main parts of the drawings

1: back container 2: back electrode

3: line cathode 4: electron beam extraction electrode

5: signal electrode 6: focusing electrode

7: horizontal deflection electrode 8: vertical deflection electrode

9: front container 10: unit cell

11: electron beam

100: electrode 110: electrode lead portion

120: conductive material 130: front container

140: rear container

In order to achieve the above object, in the present invention, a front container having a flat outer surface, a rear container coupled to the front container, and a plurality of electron beams extracted from the electron source and the electron source on the rear container, and controlled, accelerated, and deflected. Two flat plate-shaped electrodes are placed, and the electrodes are formed with an electrode lead for receiving a voltage and a signal from the outside, and the electrode lead is in contact with the rear glass, and a conductive material is coated on the rear glass to be connected to the outside. It features.

That is, in the color flat panel display device according to the present invention, an internal part including a back electrode, a hot cathode as an electron beam source, an electron beam extraction electrode, a signal electrode, a focusing electrode, a horizontal deflection electrode, and a vertical deflection electrode is accommodated in a glass container, and vacuum is applied. Each electrode of the electron beam extraction electrode, the signal electrode, the focusing electrode, the horizontal deflection electrode, and the vertical deflection electrode is formed with a dielectric or insulator layer formed on the conductive electrode, and a conductive electrode is formed on the dielectric or insulator layer. In the image display apparatus maintaining the layer structure, the electrode lead portion for applying a voltage and a signal from the outside is in contact with the rear glass, and the conductive material is formed by applying a conductive material on the corresponding rear glass, the conductive material is silver It is characterized in that the paste (silver paste).

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Fig. 3 is a side sectional view showing main parts of the constitution of the present invention.

Closed by the front container 130 and the rear container 140 to make contact with the rear container 140 the electrode extracting unit 110, which is installed to extend from the electrode 100 inside the container to maintain the vacuum The conductive material 120 is applied to the rear container 140 to interconnect the inside and the outside of the container.

It is preferable to use silver paste as the conductive material, and other materials having similar characteristics are possible.

Therefore, the present invention is to facilitate the production by allowing the interior and the exterior of the container to be electrically interconnected without having a metal having a predetermined thickness.

4 is a cross-sectional plan view of the main portion of the image display device of the present invention, the electrode lead portion 110 of the electrode 100 in the state in which the conductive material 120 is applied to a predetermined portion of the rear container 140, the rear container 140. It is shown that the contact with the conductive material 120 applied to.

The present invention is such that the voltage and signal from the outside for each electrode 100 installed in the interior of the container by the conductive material 120 thinly coated between the contact portion of the front container 130 and the rear container 140. It is possible to obtain a very desirable effect while maintaining the vacuum in the container while being able to apply.

The present invention of such a configuration is to facilitate the production process and to reduce the production cost, manpower by reducing the working time.

According to the present invention, an internal component consisting of a rear electrode, a hot cathode as an electron beam source, an electron beam extraction electrode, a signal electrode, a focusing electrode, a horizontal deflection electrode, and a vertical deflection electrode is housed in a glass container, maintains a vacuum, and maintains an electron beam extraction electrode, a signal electrode, The present invention is also applicable to an image display apparatus in which the focusing electrode, the horizontal deflection electrode, and the vertical deflection electrode maintain a constant interval and are bonded.

As those skilled in the art to which the present invention pertains, various permutations, modifications, and changes can be made without departing from the technical spirit of the present invention. It is not.

As described in detail above, the image display device according to the present invention enables the extraction of the electrode in the vacuum container to the outside in a very simple way, and also to obtain a very good effect in maintaining the vacuum in the vacuum container. This technology has the advantage of significantly reducing the production cost, manpower and time by shortening the manufacturing process.

Claims (2)

A front container having a flat outer surface, a rear container coupled to the front container, and a plurality of flat plate-type electrodes for extracting, controlling, accelerating, and deflecting an electron beam from the electron source and the electron source are placed on the rear container. And an electrode lead portion for receiving a voltage and a signal from the outside, wherein the electrode lead portion is in contact with the rear glass and a conductive material is coated on the rear glass so as to be connected to the outside. The method of claim 1, And the conductive material is silver paste.