KR20070090391A - Radio frequency display - Google Patents

Abstract

A radio frequency display device is provided to prevent a change of positions of electrodes due to stress deformation by attaching closely the electrodes to each other. A radio frequency display device includes an internal radio frequency space, a plurality of electrodes(30), a front substrate, and a rear substrate. Electron beams are emitted in the radio frequency space in order to penetrate the electrodes. The front and rear substrates are used for displaying images. The electrodes are closely attached to each other and include a sealing agent(50) to attach outlines thereof. The sealing agent is formed with a frit glass. The sealing agent is arranged between the electrodes and an upper glass. The sealing agent is coated on a high-pressure spacer(40) having left and right protrusions. The electrodes and external edges of the upper glass are attached to each other by using the sealing agent.

Description

Radio Frequency Display

1 is a simplified view of an RF display device according to the present invention;

2 is a front view of an RF display device according to the present invention;

3 is a flowchart illustrating an outer sealing method of an RF display device according to the present invention.

<Explanation of symbols on main parts of the drawings>

10: upper panel 20: lower panel

30: electrode 40: high pressure spacer

50: sealing material

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an RF display device, and more particularly, to an RF display device in which an RF space is formed therein, and a plurality of substrates each having electrodes formed thereon are bonded to each other at an outer portion thereof.

In general, a flat panel display device is a thinner and lighter image display device than a display device using a CRT. For example, a liquid crystal display (LCD), a plasma display panel (PDP), a field emission display (FED), and an organic electric field. Light emitting element ELD, and the like.

Among such flat panel displays, an image having an electrode emitting a cathode ray and a vacuum space in which the cathode ray is conducted is implemented in a preferred direction in view of image quality and manufacturing cost.

In this case, the RF display device is a device that implements an image by using an electron beam generated when electrons existing in the RF space collide with the RF electrode when voltages of 100 V and -100 V are applied in the RF space. The substrate and the rear substrate and the front substrate and the rear substrate are configured to include a frame to support the spaced apart at regular intervals to form an RF space.

The front substrate of the RF display device includes an upper glass on which an image is implemented and a plurality of electrodes for focusing and / or accelerating the electron beam in the RF space to reach the upper glass.

The plurality of electrodes are generally coated with a metal conductive film on a glass having a predetermined thickness, and may be patterned as an electrode by forming a hole in the electrode through an etching process, so that the electron beam of the RF space can pass through the hole. Closely aligned.

However, in the case of a general RF display device having a vacuum space inside the device, the external atmospheric pressure causes deformation of a plurality of substrates on which the plurality of electrodes are formed, and thus phosphors and electrodes printed on the substrates. There is a problem that the position of the field is changed or the electrodes are locally compressed and damaged.

In order to solve the above problem, the frit glass is applied so that the gap between each electrode is kept uniform.

However, the frit glass applied between the substrates on which the electrodes are formed is difficult to finely control the coating amount and has fluidity so that the frit glass flows and spreads during the fusion process, thereby blocking the movement path of electrons and thus preventing the image from being realized. The problem is that it is not suitable for implementation.

The present invention has been made to solve the above-described problems of the prior art, and provides an RF display device that composes a front panel by adhering edges of a plurality of electrodes so as to withstand the pressure difference between atmospheric pressure and vacuum and to realize a high quality image. Its purpose is to.

The RF display device according to the present invention for solving the above problems is provided with an RF space therein, the RF display device consisting of a front and back substrate that the image is realized by the electron beam emitted from the RF space passes through a plurality of electrodes In the above, the plurality of electrodes is characterized in that it comprises a sealing material for mutually bonding the outer portion of each substrate on which the electrode is formed so as to be in close contact with each other.

At this time, the sealing material is characterized in that the frit glass.

The sealing material is disposed between the electrode and the upper glass and is applied to a high-pressure spacer formed to protrude from side to side, and is bonded to the outer edges of the electrode and the upper glass.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings. 1 is a view schematically showing an RF display device according to the present invention, Figure 2 is a front view of the RF display device according to the present invention.

An RF display device according to the present invention includes a front substrate provided with a plurality of electrodes for realizing an image, a back substrate emitting electrons to the front substrate, a frame supporting the front substrate and the back substrate spaced apart at a predetermined interval; And an RF spacer disposed in the vacuum space formed between the frame and the substrate so that the substrate maintains an equal interval in the vacuum space.

The front substrate includes an upper panel 10 to which a set of R, G, and B phosphors are applied, and a plurality of electrodes 30 corresponding to the phosphors and having a plurality of holes formed therein, and the electrodes 30 Is composed of a column electrode and a row electrode in which the electron beam emitted from the RF space is integrated or accelerated.

In addition, a high pressure spacer 40 is disposed between the upper panel 10 and the column electrode 30 to prevent the influence of the high pressure applied to the upper panel 10 side.

The back substrate includes a lower panel 20 and an RF electrode formed on the lower panel 20 to serve as a cathode for emitting electrons to the front substrate.

At this time, the RF space is to form a vacuum space of about 10-7 Torr, the high pressure of 1 to 10kV is applied to the upper panel 10 side, the voltage of ± 100V is applied to the lower panel side, by the strong electric field formed accordingly When gas molecules in the RF space are activated, electrons of the activated ions collide with the RF electrode to emit secondary electrons, and as a result of repeating this process, a large number of electrons are generated through the holes of the electrode. The image is embodied by reaching the phosphor and emitting light.

Meanwhile, in the RF display device according to the present invention, the plurality of substrates 30 on which a plurality of electrodes are formed are each formed in a rectangular shape.

The substrate 30 is formed by performing an etching process so as to correspond to a hole after a metal conductor is deposited on a glass such as an insulator having a predetermined thickness, and the metal conductor is deposited on one side of the glass side or on both sides thereof. The hole formed in the substrate 30 may be formed in a shape that gradually becomes pointed toward the hole in order to improve stability of the driving voltage.

A plurality of electrode substrates 30 formed in this manner are each coated with a small amount of frit glass between the electrode substrates so as to align with each formed hole and to be arranged at uniform intervals.

In addition, the sealing material 50 applied to the outer portion of the electrode substrate 30 is composed of frit glass, the substrate 30 is bonded to each other at the outer portion of the substrate so that the substrate 30 is in close contact with each other.

More specifically, the sealing material 50 is to be bonded not only between the electrode substrate 30 but also between the upper panel 10 and the electrode substrate 30, and the upper panel 10 and the column. The high-voltage spacer 40 disposed between the electrodes 30 has a relatively large area so that a peripheral portion protrudes to the left and right of the upper panel 10 and the column electrode 30.

Therefore, when the adhesive is to be adhered to the upper panel 10, the sealing material 50 is applied to the high pressure spacer 40, and the sealing material 50 is formed on the outer edge of the upper panel 10 or the column electrode 30. To be attached.

Looking at the outer sealing method of the RF display device according to the present invention configured as described above are as follows. 3 is a flowchart illustrating an outer sealing method of an RF display device according to the present invention.

First, a plurality of electrode substrates and back substrates constituting the front substrate are formed (S1).

Next, the plurality of spacers are aligned with respect to the rear substrate so that the front substrate and the rear substrate maintain equal intervals, and the positions of the aligned spacers are fixed (S2).

In addition, the frit glass is coated so that a predetermined interval can be maintained even between the plurality of electrode substrates constituting the front substrate.

Next, a sealing material is coated on the electrodes protruding left and right of the electrode substrate. In this case, the sealing material is positioned at the outer portion to contact the edge of the substrate to be bonded to the coated substrate. (S3)

Next, the front substrate and the rear substrate are combined and put in a heating furnace to fuse the substrates together (S4).

It is connected to the inside of the fused device to exhaust gas molecules so that the RF space in the device is 10 ^-7 Torr or less, and activates the getter provided in the device (S5, S6).

Referring to the operation of the RF display device according to the present invention configured and sealed as follows.

Due to the pressure difference between the inside and outside of the panel, that is, the difference between the vacuum pressure and the atmospheric pressure, stress deformation may occur on a plurality of substrates constituting the front panel. This stress deformation is prevented.

The sealing material is adhered to the outer portion of the plurality of electrode substrates to closely bond the substrates, it is applied from the edge of each electrode to the outer side to prevent the sealing material from penetrating between the respective electrodes when melted.

As described above, the RF display device according to the present invention has been described with reference to the illustrated drawings. However, the present invention is not limited by the embodiments and drawings disclosed herein, and is easily used by those skilled in the art within the scope of technical protection. Can be applied.

The RF display device according to the present invention configured as described above can be bonded to the outer portion of each substrate formed with the electrodes so that a plurality of electrodes are in close contact with each other, it is possible to prevent the position variation of the electrode due to stress deformation. Therefore, there is an effect that can implement a high quality image.

Claims (3)

In the RF display device is provided with an RF space therein, and the front and back substrate that the electron beam emitted from the RF space passes through a plurality of electrodes to implement the image, And the plurality of electrodes comprises a sealing material for adhering the outer portions of the substrates on which the electrodes are formed so as to be in close contact with each other. The method of claim 1, And the sealing material is frit glass. The method of claim 2, The sealing material is applied to the high-pressure spacer formed between the electrode and the upper glass and protruded to the left and right, RF display device, characterized in that bonded to the outer edge of the electrode and the upper glass.

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