KR20070022551A - Flat panel display having a high-voltage impression device - Google Patents

Abstract

According to an aspect of the present invention, there is provided a flat panel display device including a high voltage applying means, comprising: a substrate having electrodes formed in a display area and a non-display area, and through holes formed in the non-display area; Coupling means fastened to a through hole of a non-display area of the substrate; And a power electrode plate provided between the image display substrate and the coupling means.

The flat panel display device having the high voltage applying means according to the present invention can stably apply a high voltage by connecting the voltage applying terminal to the anode electrode so as to fix the voltage applying terminal.

Anode electrode, coupling means, power electrode plate

Description

Flat display device with high voltage application means {FLAT PANEL DISPLAY HAVING A HIGH-VOLTAGE IMPRESSION DEVICE}

1 is a view schematically showing a structure of a flat panel display device having a high voltage applying means according to the related art.

2 is a plan view schematically illustrating the structure of a flat panel display device;

3 is a cross-sectional view of FIG. 2.

Figure 4 is a plan view schematically showing a high voltage applying means according to the present invention.

Figure 5 is a side view schematically showing a high voltage applying means according to the present invention.

<Description of main parts of drawing>

210 --- Second substrate 212 --- Anode electrode

220 --- First substrate 230 --- Support means

242 --- Power electrode plate 250 --- Coupling means

241 --- Bolt 243 --- Nut

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a flat panel display device having high voltage application means, and more particularly, to a flat panel display device having high voltage application means capable of applying a voltage more stably when a high voltage is applied to an electrode node.

In general, a flat panel display (FPD) is a device for manufacturing a sealed container by standing a side wall between two substrates, and placing a suitable material inside the container to display a desired screen. Together, its importance is increasing. In response to this, various flat panel displays, such as liquid crystal displays (LCDs), plasma display panels (PDPs), electron emission displays, and the like, have been developed and put into practical use.

In particular, the electron-emitting display device can be implemented as a low-power flat-panel display without distorting the image while maintaining excellent characteristics of the cathode ray tube (CRT) by using phosphor emission by electron beams in the same way as the cathode ray tube (CRT). It is attracting attention as a next-generation display that is satisfactory in terms of its large, viewing angle, high-speed response, high brightness, high definition, and thinness.

A general electron emission display device is a display device including an electron emission device for each pixel. The electron emitting device is a device that emits electrons from the cathode in response to a voltage between the cathode and the gate electrode, and the emitted electrons are accelerated by the anode and collide with the phosphor to emit light. The electron emitting device has a method using a hot cathode and a cold cathode as an electron source. The electron-emitting devices using the cold cathode are FEA (Field Emitter Array) type, SCE (Surface Conduction Emitter) type, MIM (Metal-Insulator-Metal) type, MIS (Metal-Insulator-Semiconductor) type, BSE (Ballistic) electron surface emitting) and the like are known.

The FEA type electron emission device uses a low work function or high β function as an electron emission source to emit electrons by electric field in vacuum. In addition, devices using electron emission sources for nanomaterials have been developed.

The SCE type electron emission device is a device in which an electron emission part is formed by providing a conductive thin film between two electrodes disposed to face each other on a substrate and providing a micro crack in the conductive thin film. The device utilizes a principle that electrons are emitted from the electron emission portion, which is the fine gap, by applying a voltage to an electrode to flow a current to the surface of the conductive thin film.

The MIM and MIS electron emission devices each form an electron emission portion formed of a metal-dielectric layer-metal (MIM) and a metal-dielectric layer-semiconductor (MIS) structure, and are disposed between two metals or metals and semiconductors having a dielectric layer interposed therebetween. When a voltage is applied to the device, a device using the principle of emitting electrons while moving and accelerating from a metal having a high electron potential or a metal having a low electron potential toward the metal.

The BSE-type electron emitting device forms an electron supply layer made of a metal or a semiconductor on an ohmic electrode by using the principle that electrons travel without scattering when the size of the semiconductor is reduced to a dimension region smaller than the average free stroke of electrons in the semiconductor. And an insulating layer and a metal thin film formed on the electron supply layer to emit electrons by applying power to the ohmic electrode and the metal thin film.

1 is a diagram schematically illustrating a structure of a flat panel display device having a high voltage applying means according to the related art. As shown in the drawing, the flat panel display device 100 is formed by separating the first substrate (not shown), which is an electron emitting substrate, and the second substrate (not shown), which is an image forming substrate, at a predetermined interval while maintaining a vacuum state. have. At this time, a support member (not shown) is provided between the first substrate and the second substrate to support the two substrates while maintaining a space between the two substrates in a vacuum state.

The second substrate includes: a transparent substrate 101, anode electrodes 102a and 102b formed in the display region 103 and the non-display region 104 on the transparent substrate 101; And a power supply terminal 106 fixed to be connected to the anode electrode 102b of the non-display area 104.

Further, a phosphor (not shown) that emits light by electrons emitted from an electron emission unit (not shown) on the anode electrode 102 of the second substrate, and a light shielding film formed between the phosphor (not shown) Not shown).

Meanwhile, in order to apply a high voltage to the anode electrodes 102a and 102b, the power supply terminal 106 connected to the anode electrode 102b of the non-display area 104 is fixed by tongs. .

However, the power supply terminal 106 having the shape of the tongs is not fixed to the anode electrode, resulting in poor connectivity and lack of stable application of high voltage.

SUMMARY OF THE INVENTION An object of the present invention is to provide a flat panel display device having high voltage applying means capable of stably applying a high voltage by connecting a voltage applying terminal to the anode electrode so as to fix the voltage applying terminal.

According to an aspect of the present invention, there is provided a flat panel display device having a high voltage applying means, comprising: a substrate having electrodes formed in a display area and a non-display area, and through holes formed in the non-display area; And a coupling means fastened to the through hole of the non-display area of the substrate, and a power electrode plate provided between the image display substrate and the coupling means.

In particular, the coupling means is fastened by a bolt and a nut, the power electrode plate is characterized in that the power supply terminal is connected.

According to the present invention, it is possible to more stably connect and apply a voltage to the electron emission display device when a high voltage is applied.

Hereinafter, a preferred embodiment of a flat panel display device having a high voltage applying means according to the present invention will be described in detail with reference to the accompanying drawings.

2 is a plan view schematically illustrating the structure of a flat panel display, and FIG. 3 is a cross-sectional view of FIG. 2. Here, the structure of this figure is not particularly limited, and various structures of the panel are possible.

As shown in FIGS. 2 and 3, the flat panel display 200 maintains a vacuum state between the first substrate 220, which is an electron emitting substrate, and the second substrate 210, which is an image forming substrate, at predetermined intervals. It is formed spaced apart. At this time, between the first substrate 220 and the second substrate 210 includes a support member 230 for maintaining the space between the two substrates in a vacuum state to support the two substrates (210, 220).

An electrode is formed in the display area 201 and the non-display area 202 on the image forming substrate, which is the second substrate 210, and a through hole is formed in the non-display area 202. Coupling means 250 fastened to the through hole of 202 and the power electrode plate 242 provided between the second substrate 210 and the coupling means 250 is further included.

In addition, a panel driver (data driver and scan driver) (not shown) for supplying a data signal and a scan signal is connected to the flat panel display device 200, respectively.

In more detail, the first substrate 220, which is the electron emission substrate of the flat panel display device 200, forms the cathode electrode 222 in a predetermined shape, for example, on a stripe, on the transparent substrate 221. The electron emission device is formed with the electron emission unit 226 in a region where the cathode electrode 222 and the gate electrode 224 intersect. For example, indium tin oxide (ITO) is used as the cathode electrode 222 as a transparent electrode.

The insulating layer 223 is formed on the substrate 221 and the cathode electrode 222, and electrically insulates the cathode electrode 222 and the gate electrode 224. The insulating layer 223 includes at least one hole 225 at the intersection of the cathode electrodes 222 and the gate electrodes 224 so that the cathode electrode 222 is exposed.

The gate electrodes 224 are disposed on the insulating layer 223 in a predetermined shape, for example, in a direction crossing the cathode electrode 222 on a stripe, and each data signal or scan applied from the data driver or the scan driver. The signal is supplied to each electron-emitting device.

The second substrate 210, which is an image forming substrate, includes a transparent substrate 211, an anode electrode 212 formed on the transparent substrate 211, and an electron emission unit 226 on the anode electrode 212. And a light shielding film 214 formed between the phosphor 213 and the phosphor 213.

In addition, the internal vacuum space between the first substrate 220 and the second substrate 210 includes a support means 230 against the atmospheric pressure applied from the outside and a spacer 231 for maintaining and supporting at a predetermined interval, One end of the spacer 231 is formed in contact with the upper portion of the light shielding film 214, and the other end is formed in contact with the upper portion of the insulating layer 223.

Meanwhile, although the upper gate structure is taken as an example of the electron emitting device, the flat panel display device 200 is not limited thereto. If the flat display device 200 emits electrons, various structures including a lower gate structure and a double gate structure are possible.

In the flat display device 220 as described above, the positive electrode voltage is applied to the cathode electrode 222 of the image display panel, the negative voltage is applied to the gate electrode 224, and the anode electrode 212 is connected to the external display. ), A positive voltage is applied. As a result, an electric field is formed around the electron emission unit 226 due to the voltage difference between the cathode electrode 222 and the gate electrode 224, and the electrons are emitted, and the emitted electrons are applied to the anode electrode 212. Induced by the impingement to the phosphor area 213 of the pixel to emit light to implement the gray scale of the image.

On the other hand, Figure 4 is a plan view schematically showing a high voltage applying means according to the present invention, Figure 5 is a side view schematically showing a high voltage applying means according to the present invention. As shown in the drawing, the power electrode plate 242 is provided in an area where a through hole formed on the anode electrode 212b of the non-display area 202 is located. In this case, the power electrode plate 242 is positioned to contact the surface on which the anode electrode 212b of the non-display area 202 is formed. In addition, the power electrode plate 242 is formed of a metal material, and the same sized hole as that of the through hole is formed.

In addition, a power supply terminal (not shown) is connected to the power electrode plate 242 to receive a voltage from the power supply unit. At this time, the connection of the power supply terminal (not shown) is fixed by forming by soldering.

Then, the fixing means 250 is fixed to fix the connection between the power electrode plate 242 and the anode electrode 212b. Here, the coupling means 250 may be fastened with a bolt 241 and a nut 243. At this time, the coupling means 250 is formed of a conductive material.

Therefore, the power supply electrode plate can be stably connected by the coupling means to stably apply a high voltage to the anode electrode.

Although the present invention has been described with reference to the embodiments illustrated in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

As described above, the flat panel display device having the high voltage applying means according to the present invention can stably apply a high voltage by connecting the voltage applying terminal to the anode electrode so as to fix the voltage applying terminal.

Claims (6)

A substrate having electrodes formed in the display area and the non-display area, and through holes formed in the non-display area; Coupling means fastened to a through hole of a non-display area of the substrate; And a power electrode plate provided between the substrate and the coupling means. The method of claim 1, The substrate is an image forming substrate comprising a transparent substrate, an anode electrode formed on the transparent substrate, a phosphor formed on the anode electrode, and a light shielding film formed between the phosphors. Flat display device provided. The method of claim 1, And the coupling means is fastened by a bolt and a nut. The method of claim 1, And a power applying terminal is connected to the power electrode plate. The method of claim 1, And the coupling means is formed of a conductive material. The method of claim 1, And the power electrode plate is in contact with a surface on which the anode electrode of the non-display area is formed.

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