KR20070080128A - Plasma display apparatus - Google Patents

Abstract

A plasma display apparatus is provided to reduce electromagnetic waves generated from a data drive integrated circuit unit by arranging an electromagnetic wave reduction unit at an upper part of the data drive integrated circuit unit. A plasma display panel(100) includes an address electrode. A data drive integrated circuit unit(120) supplies a data pulse to the address electrode. An electromagnetic wave reduction unit(170) is installed at an upper part of the data drive integrated circuit unit. The data drive integrated circuit unit is disposed on a printed circuit board having a flexible characteristic. The printed circuit board having the flexible characteristic is disposed on a frame(110). The frame is disposed on a rear surface of the plasma display panel. The electromagnetic wave reduction unit absorbs electromagnetic waves generated from the data drive integrated circuit unit and converts the electromagnetic waves into the heat.

Description

Plasma Display Apparatus {Plasma Display Apparatus}

BRIEF DESCRIPTION OF THE DRAWINGS The figure for demonstrating the structure of the plasma display apparatus of this invention.

2A to 2B are views for explaining an example of a plasma display panel included in the plasma display device of the present invention.

3A to 3B are views for explaining the electromagnetic wave reduction unit of the plasma display device of the present invention in more detail.

4 is a view for explaining another structure of the electromagnetic wave reduction unit of the plasma display device of the present invention in more detail.

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

100: plasma display panel 110: frame

120: data drive integrated circuit unit 130: data board

140: flexible circuit board 150: connector

160: heat sink 170: electromagnetic wave reduction unit

The present invention relates to a plasma display device, and more particularly, to a plasma display device for reducing the generation of electromagnetic waves.

The plasma display apparatus includes a plasma display panel displaying an image using plasma discharge and a driving unit supplying a predetermined driving voltage to the plasma display panel.

In the plasma display panel, a phosphor layer is formed in a discharge cell partitioned by a partition wall, and a plurality of electrodes are formed.

The driving voltage is supplied from the driver to the discharge cell through the electrode.

Then, the discharge is generated by the driving voltage supplied in the discharge cell. Here, when discharged by the driving voltage in the discharge cell, the discharge gas filled in the discharge cell generates vacuum ultraviolet rays, and the vacuum ultraviolet light emits the phosphor formed in the discharge cell to emit visible light. Generate.

The visible light displays an image on the screen of the plasma display panel.

As such, when a discharge occurs in a discharge cell of the plasma display panel, a large amount of electromagnetic waves (Electro-Magnetic Interference: EMI) is generated in the plasma display panel. In addition, electromagnetic waves are generated in the driving unit by switching of the driving unit for supplying the driving voltage to the discharge cells through the electrodes.

Here, the electromagnetic waves generated in the plasma display panel can be effectively shielded through an image filter, but the electromagnetic waves generated in the driving unit are emitted to the outside without being blocked.

The electromagnetic waves thus emitted cause a problem that adversely affects the viewer.

SUMMARY OF THE INVENTION In order to solve the above problems, an object of the present invention is to provide a plasma display device that shields electromagnetic waves generated from a driving unit.

Plasma display device of the present invention for achieving the above object is a plasma display panel having an address electrode, a data drive integrated circuit (Data Drive Integrated Circuit) for supplying data pulse to the address electrode and the data drive integrated circuit portion on the top It is preferable to include the electromagnetic wave reduction part arrange | positioned.

The data drive integrated circuit unit may be disposed on a flexible circuit board.

In addition, the flexible substrate is disposed on a frame, and the frame is disposed on the back of the plasma display panel.

In addition, the electromagnetic wave reduction unit is characterized in that the electromagnetic wave generated in the data drive integrated circuit unit absorbs and converts it into heat.

In addition, the electromagnetic wave reduction unit is in the form of a tape (Tape), characterized in that the tape-type electromagnetic wave reduction unit is attached to cover the upper portion of the data drive integrated circuit.

In addition, the electromagnetic wave reduction unit is characterized in that the radio frequency tape (Radio Frequency Tape: RF Tape).

In addition, a heat sink is disposed above the electromagnetic wave reduction unit.

Hereinafter, a plasma display device of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view for explaining the configuration of the plasma display device of the present invention.

Referring to FIG. 1, the plasma display apparatus of the present invention includes a plasma display panel 100, a data drive integrated circuit 120, and an electromagnetic wave reduction unit 170. In addition, the plasma display apparatus of the present invention, in addition to the plasma display panel 100, the data drive integrated circuit unit 120, the electromagnetic wave reduction unit 170, the frame (Frame 110), data board 130, flexible circuit board 140 Preferably, the connector further includes a connector 150 and a heat sink 160.

An address electrode is formed in the plasma display panel 100.

Here, an example of the plasma display panel 100 will be described with reference to FIGS. 2A to 2B.

2A to 2B are diagrams for explaining an example of the plasma display panel included in the plasma display device of the present invention.

First, referring to FIG. 2A, the plasma display panel includes a front panel 200 including an electrode, preferably a front substrate 201 on which scan electrodes 202 and Y and sustain electrodes 203 and Z are formed. And a back side including an electrode (Electrode), preferably a back side substrate 211 on which a plurality of address electrodes 213 and X are formed to intersect the scan electrodes 202 and Y and the sustain electrodes 203 and Z described above. The panel 210 is bonded to each other.

Here, the electrodes formed on the front substrate 201, preferably the scan electrodes 202 and Y and the sustain electrodes 203 and Z, generate a discharge in a discharge space, that is, a discharge cell, and at the same time Maintain the discharge.

The dielectric layer, preferably on the upper surface of the front substrate 201 where the scan electrodes 202 and Y and the sustain electrodes 203 and Z are formed to cover the scan electrodes 202 and Y and the sustain electrodes 203 and Z. Upper dielectric layer 204 is formed.

This upper dielectric layer 204 limits the discharge current of the scan electrodes 202 and Y and the sustain electrodes 203 and Z and insulates the scan electrodes 202 and Y from the sustain electrodes 203 and Z.

A protective layer 205 is formed on the top surface of the upper dielectric layer 204 to facilitate discharge conditions. The protective layer 205 is formed by, for example, depositing a material such as magnesium oxide (MgO) over the upper dielectric layer 204.

On the other hand, an electrode formed on the rear substrate 211, preferably the address electrodes 213 and X, supplies data to the discharge cells.

A dielectric layer, preferably a lower dielectric layer 215 is formed on the rear substrate 211 on which the address electrodes 213 and X are formed to cover the address electrodes 213 and X.

This lower dielectric layer 215 insulates the address electrodes 213, X.

A discharge space, that is, a partition 212, such as a stripe type or a well type, is formed on the lower dielectric layer 215 to partition the discharge cells. Here, a predetermined discharge gas is filled in the discharge cell partitioned by the partition wall 212.

Here, in the discharge cells partitioned by the partition walls 212, the phosphor layer 214 that emits visible light for image display upon address discharge, preferably red (R), green (G), blue (Blue: B) A phosphor layer is formed.

In the plasma display panel of the present invention described above, when the driving voltage is supplied to at least one of the scan electrodes 202, Y, the sustain electrodes 203 and Z, and the address electrodes 213 and X, the partition 212 is applied to the partition wall 212. Discharges occur within the discharge cells partitioned by each other.

Then, vacuum ultraviolet rays are generated in the discharge gas filled in the discharge cells, and the vacuum ultraviolet rays are applied to the phosphor layer 214 formed in the discharge cells. Then, a predetermined visible light such as red, blue, green, etc. is generated in the phosphor layer 214, and the visible light is emitted to the outside through the front substrate 201, and thus the front substrate. A predetermined image is displayed on the outer surface of 201.

Meanwhile, in the description of FIG. 2A, only the case where the scan electrodes 202 and Y and the sustain electrodes 203 and Z are each formed of one layer is illustrated and described. However, the scan electrodes 202 and Y or the It is also possible that at least one of the sustain electrodes 203 and Z consists of a plurality of layers. This will be described with reference to FIG. 2B.

Referring to FIG. 2B, the scan electrodes 202 and Y and the sustain electrodes 203 and Z may be formed of two layers, respectively.

In particular, in consideration of light transmittance and electrical conductivity, the scan electrodes 202 and Y and the sustain electrodes 203 and Z are opaque silver (Ag) to emit light generated in the discharge cell to the outside and to secure driving efficiency. Bus electrodes 202b and 203b and transparent electrodes 202a and 203a made of transparent indium tin oxide (ITO).

As such, the reason why the scan electrodes 202 and Y and the sustain electrodes 203 and Z include the transparent electrodes 202a and 203a is that when visible light generated in the discharge cells is emitted to the outside of the plasma display panel. To be released effectively.

In addition, the reason why the scan electrodes 202 and Y and the sustain electrodes 203 and Z include the bus electrodes 202b and 203b is that the scan electrodes 202 and Y and the sustain electrodes 203 and Z are transparent electrodes. In the case of including only 202a and 203a, the driving efficiency can be reduced because the electrical conductivity of the transparent electrodes 202a and 203a is relatively low, so that the transparent electrodes 202a and 203a can cause such a reduction in the driving efficiency. To compensate for the low electrical conductivity.

2A to 2B, only one example of the plasma display panel of the present invention is shown and described, and it is to be understood that the present invention is not limited to the plasma display panel having the structure as shown in FIGS. 2A to 2B. For example, the plasma display panel of FIGS. 2A to 2B shows only the case where the upper dielectric layer 204 and the lower dielectric layer 215 are each one layer, but the upper dielectric layer 204 and At least one or more of the lower dielectric layers 215 may be formed of a plurality of layers.

That is, the plasma display panel which can be applied to the plasma display apparatus of the present invention is formed with the address electrodes 212 and X, and other conditions are acceptable.

The main features of the plasma display device of the present invention including such a plasma display panel will become more apparent from the following description.

2A to 2B, the description of FIG. 1 is continued.

The data drive integrated circuit unit 120 supplies a data pulse to the address electrode X of the plasma display panel 100.

The electromagnetic wave reduction unit 170 is disposed above the data drive integrated circuit unit 120. The electromagnetic wave reduction unit 170 reduces the electromagnetic wave (EMI) generated by the switching operation of the data drive integrated circuit unit 120. The electromagnetic wave reduction unit 170 will be described in more detail later.

The data drive integrated circuit unit 120 may be disposed on the flexible circuit board, that is, the flexible circuit board 140. The flexible circuit board 140 may be a type such as a tape carrier package (TCP), a chip on film (COF), or the like.

The reason for arranging the data drive integrated circuit unit 120 on the flexible circuit board 140 is that the distance between the address electrode X of the plasma display panel 100 and the data drive integrated circuit unit 120 becomes too far. In order to prevent excessive noise in the data pulse supplied to the address electrode X, the data drive integrated circuit unit 120 is disposed on the flexible circuit board 140 to prevent the data drive integrated circuit unit 120 and the plasma display panel. This is to narrow the distance between the address electrodes X of (100).

Here, one end of the flexible circuit board 140 is connected to the address electrode X of the plasma display panel 100, and the other end thereof is connected to the data board 130 through the connector 150.

In particular, the flexible substrate, that is, the flexible circuit board 140 is preferably disposed on the frame 110. The frame 110 supports the plasma display panel 100 and emits heat generated from the plasma display panel 100 to the outside, and also provides a space in which various driving units, for example, the data board 130 are arranged, as shown in FIG. 1. do. Such a frame 110 is preferably disposed on the back of the plasma display panel 100.

The heat sink 160 discharges heat generated from the data drive integrated circuit unit 120 to the outside.

The operation of the plasma display device of the present invention of FIG. 1 will be described as follows.

First, when an image signal is input from the outside, image data according to the input image signal is input to the flexible circuit board 140 data drive integrated circuit unit 120 through the data board 130 and the connector 150.

Then, the data drive integrated circuit unit 120 performs a switching operation according to the input image data, and the data pulse is supplied to the address electrode X of the plasma display panel 100 by the switching operation.

Here, when a scan pulse is supplied to the scan electrode Y of the plasma display panel 100, an address discharge is generated in a discharge cell to which both a data pulse and a scan pulse are supplied, thereby addressing.

As described above, when the data drive integrated circuit unit 120 performs a switching operation, electromagnetic waves (EMI) are generated in the data drive integrated circuit unit 120. Most of the electromagnetic waves generated by the data drive integrated circuit unit 120 are generated by the electromagnetic wave reduction unit 170. Is absorbed and disappears.

The electromagnetic wave reduction unit 170 will now be described in more detail with reference to FIGS. 3A to 3B.

3A to 3B are views for explaining the electromagnetic wave reduction unit of the plasma display device of the present invention in more detail.

First, referring to FIG. 3A, the data drive integrated circuit unit 120 is disposed on the flexible circuit board 140, and the electromagnetic wave reduction unit 170 is disposed to cover the upper portion of the data drive integrated circuit 120.

Here, the electromagnetic wave reduction unit 170 is in the form of a tape, the tape electromagnetic wave reduction unit 170 is preferably attached to cover the upper portion of the data drive integrated circuit unit (120).

More preferably, the electromagnetic wave reduction unit 170 is a radio frequency tape (RF Tape). The RF tape reduces the generation of electromagnetic waves by absorbing electromagnetic waves and converting them into heat.

In addition, the heat sink 160 may be disposed above the electromagnetic wave reduction unit 170.

Next, referring to FIG. 3B, the operation of the electromagnetic wave reduction unit 170 is illustrated.

For example, when the data drive integrated circuit unit 120 performs a switching operation, and thus electromagnetic waves are generated in the data drive integrated circuit unit 120, the generated electromagnetic waves are absorbed by the electromagnetic wave reduction unit 170.

Here, the electromagnetic wave reduction unit 170 absorbing the electromagnetic wave generated by the data drive integrated circuit unit 120 converts the absorbed electromagnetic wave into heat. Then, the converted heat is released. That is, the electromagnetic wave reduction unit 170 absorbs the electromagnetic waves generated by the data drive integrated circuit unit 120 and converts the electromagnetic waves into heat.

Here, the heat emitted from the electromagnetic wave reduction unit 170 is discharged to the outside through the heat sink 160 disposed above the electromagnetic wave reduction unit 170.

Accordingly, electromagnetic waves generated in the data drive integrated circuit unit 120 are reduced.

Meanwhile, in the above description, only one electromagnetic wave reduction unit 170 is disposed on one data drive integrated circuit unit 120. However, the electromagnetic wave reduction may be performed per one or more data drive integrated circuit units 120. It is also possible to arrange the unit 170.

This will be described with reference to FIG. 4.

4 is a view for explaining another structure of the electromagnetic wave reduction unit of the plasma display device of the present invention in more detail.

Referring to FIG. 4, one electromagnetic wave reducing unit 400 is disposed on the frame 110 to cover all of the plurality of data drive integrated circuit units 120 disposed on the plurality of circuit flexible substrates 140.

As such, when the electromagnetic wave reduction unit 400 covers all of the plurality of data drive integrated circuit units 120, the process of installing the electromagnetic wave reduction unit 400 is further simplified.

For example, assume that the total number of data drive integrated circuit units 120 is ten.

In this case, if one electromagnetic wave reduction unit 170 is disposed per one data drive integrated circuit unit 120 as shown in FIG. 3A, the ten electromagnetic wave reduction units 170 may be respectively corresponded to the data drive integrated circuit unit 120. A total of 10 processes are needed to place them on top of the.

On the other hand, in the case of the excitation as shown in FIG. 4, the electromagnetic wave reducing unit 400 may be disposed in one step.

Thereby, the number of whole processes can be reduced.

As such, the technical configuration of the present invention described above can be understood by those skilled in the art that the present invention can be implemented in other specific forms without changing the technical spirit or essential features of the present invention.

Therefore, the exemplary embodiments described above are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the appended claims rather than the foregoing detailed description, and the meaning and scope of the claims are as follows. And all changes or modifications derived from the equivalent concept should be interpreted as being included in the scope of the present invention.

As described in detail above, the plasma display apparatus of the present invention has an effect of reducing electromagnetic waves generated by the driver by disposing electromagnetic waves generated on the data drive integrated circuit unit to reduce electromagnetic waves generated by the data drive integrated circuit unit.

Claims (7)

A plasma display panel having an address electrode formed thereon; A data drive integrated circuit supplying data pulses to the address electrodes; And An electromagnetic wave reduction unit disposed above the data drive integrated circuit unit; Plasma display device comprising a. The method of claim 1, The data drive integrated circuit unit Plasma display device, characterized in that disposed on a flexible circuit board. The method of claim 2, The flexible substrate is disposed on a frame, And the frame is disposed on a rear surface of the plasma display panel. The method of claim 1, The electromagnetic wave reduction unit And absorbing and converting electromagnetic waves generated from the data drive integrated circuit into heat. The method of claim 1, The electromagnetic wave reduction unit is in the form of a tape, The tape type electromagnetic wave reduction unit is attached to cover the upper portion of the data drive integrated circuit unit. The method of claim 5, The electromagnetic wave reduction unit Plasma display device characterized in that the Radio Frequency Tape (RF Tape). The method of claim 1, On top of the electromagnetic wave reduction portion Plasma display device characterized in that the heat sink (Heat Sink) is disposed.

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