KR100543589B1 - Plasma Display Panel Capable of Improving Discharge Characteristic - Google Patents

Abstract

The present invention relates to a plasma display panel capable of improving discharge characteristics. The present invention includes a conductive sheet attached to the entire light emitting region of the back substrate and a heat sink thermally connected to the conductive sheet to dissipate heat from the conductive sheet to the outside. According to the present invention as described above, due to the conductive sheet attached to the entire light emitting area of the rear substrate, erroneous discharge is minimized and inductance is minimized, thereby improving image quality and increasing driving voltage margin.

Plasma, Display, Panel, PDP, Heat Dissipation, Sheet

Description

Plasma Display Panel Capable of Improving Discharge Characteristic}

1 is a structural diagram of a plasma display panel of the prior art.

2 is a view for explaining a connection relationship between a rear substrate, a heat dissipation sheet, and a heat dissipation plate included in a plasma display panel according to an example of the related art.

3 is a view for explaining the relationship between the lower plate glass, the conductive sheet, the heat dissipation sheet, and the heat sink included in the plasma display panel according to another example of the prior art.

4 is a diagram for describing a plasma display panel according to an exemplary embodiment of the present invention.

The present invention relates to a plasma display panel, and more particularly, to a plasma display panel capable of improving discharge characteristics.

1 is a structural diagram of a typical AC surface discharge plasma display panel. As shown in FIG. 1, a typical plasma display panel includes a front substrate 122 and a back substrate 124 made of transparent glass facing each other in parallel with an interval of 100 to 200 μm. In such a back substrate 124, partition walls 126 are formed in parallel to maintain a distance from the front substrate 122.

Between the adjacent partition walls 126 and 126, a column Xj (j = 1, 2, ..., m) of an X electrode made of aluminum (Al) or an aluminum alloy has a thickness of 100 nm to perform an addressing function. It is formed parallel to the partition wall. In addition, the R, G, and B phosphor films cover each X electrode with a thickness of 10 to 30 µm to form the light emitting layer 136.

On the other hand, on the surface of the front substrate 122 facing the rear substrate 124, the row electrodes Yi, Zi (i = 1, 2, ..., n) of the Y electrode and the Z electrode are formed perpendicular to the X electrode. The Y electrode and the Z electrode extend in parallel to each other by a thickness of approximately several hundred nm by deposition of ITO or tin oxide (SnO), and the row electrode Yi and Zi adjacent to each other form a pair of row electrode pairs Yi, Zi).

Further, each of the row electrodes Yi and Zi is formed so that the metal bus electrodes α i and β i narrower than the widths of the row electrodes Yi and Z i are electrically connected to the row electrodes Yi and Z i. These bus electrodes alpha i and beta i are complementary to the row electrodes Yi and Zi having poor conductivity as auxiliary electrodes.

The dielectric layer 130 is formed on the row electrodes Yi and Zi. The MgO layer 132 made of magnesium oxide (MgO) is laminated in contact with the dielectric layer 130.

After the electrodes Xj, Yi, Zi, αi, βi, the dielectric layer 130 and the light emitting layer 136 are formed, the front substrate 122 and the back substrate 124 are sealed and exhaust of the discharge space 128 Is done. Subsequently, an inert mixed gas including 3% to 7% of NeXe gas is injected into the discharge space 128 at 400 to 600 torr.

The unit emission region (one pixel cell P _{(i, j)} ) is defined around the intersection of the Xj electrodes intersecting the Yi and Zi electrodes. When the addressing discharge is started between the Xj electrode and the Yi electrode to the pixel cell P _{(i, j)} , a sustain pulse is applied between the Yi electrode and the Zi electrode to maintain the discharge and emit visible light from the phosphor 136.

The plasma display panel includes an X electrode driver, a Y electrode driver, and a Z electrode driver for driving each electrode.

2 is a view for explaining the relationship between the back substrate, the heat dissipation sheet, and the heat sink included in the plasma display panel of the related art. As shown in FIG. 2, a board on which the X electrode driver 210, the Y electrode driver 220, and the Z electrode driver 230 for driving the X electrode, the Y electrode, and the Z electrode is formed on the heat sink 200, respectively. Combined. The heat sink 200 radiates heat generated during the operation of each board.

Each of the driving units 210, 220, and 230 is connected to the electrodes formed on the front substrate 122 and the rear substrate 124 by a conductive line. At this time, the Z electrode driver 230 is connected to one conductor because the Z electrode is commonly tied.

The heat dissipation sheet 300 serves as an adhesive tape for attaching the heat sink 200 to the rear substrate 124, and the heat sink 200 serves to dissipate heat generated from the plasma display panel to the outside. .

In the conventional plasma display panel, since the alignment of the electrodes is not accurate, the distribution of charges in the pixel cell is uneven. This causes a false discharge. That is, the distribution of charges is uneven, and the presence or absence of the discharge of the pixel cells and the gray scale expression are not accurately controlled. This misdischarge reduces the margin of sustain voltage.

3 is a view for explaining the relationship between the bottom plate glass, the conductive sheet, the heat dissipation sheet, and the heat sink included in the plasma display panel of the prior art. As shown in FIG. 3, the Y / Z electrode driver 240 formed by integrating the function of the Y electrode driver and the function of the Z electrode driver on the board is formed on the heat sink 200.

Since the integrated Y / Z electrode driver 240 is located on one side of the heat sink 200, the Y / Z electrode driver 240 and the Z electrode are electrically connected to each other in order to apply a pulse to the Z electrode. The cable 400 is attached on the rear substrate 124. In the figure, cable 400 is shown enlarged to facilitate identification.

However, such a structure also causes an erroneous discharge due to incorrect alignment of the electrodes, and an inductance component occurs because the cable 400 is folded, thereby lowering the discharge characteristics of the plasma display panel.

The present invention is to solve the above problems, and to provide a plasma display panel that can minimize the mis-discharge of the plasma display panel and minimize the generation of inductance.

A plasma display panel of the present invention for achieving the above object is a plasma display panel comprising a front substrate formed with a Y electrode and a Z electrode, and a back substrate formed with an X electrode, the conductive attached to the entire light emitting region of the rear substrate Sheets; And a heat sink thermally connected to the conductive sheet to dissipate heat from the conductive sheet to the outside.
In this aspect, the conductive sheet is divided into pieces and adhered to the entire light emitting area of the rear substrate.
In this aspect, the conductive sheet is electrically connected to the Z electrode.
In this aspect, the heat dissipation sheet is formed with a heat dissipation sheet to mechanically bond with the conductive sheet.

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

4 is a diagram for describing a plasma display panel according to an exemplary embodiment of the present invention. As shown in FIG. 4, the plasma display panel according to the present invention includes a heat sink 500, a glass substrate 510, a conductive sheet 520, and a heat radiation sheet 510.

First, the X electrode driver 501 for driving the X electrode and the Y / Z electrode driver 503 integrated in one board are formed and combined on the top surface of the heat sink 500, respectively. do. The heat sink 200 radiates heat generated during the operation of the X electrode driver 501 and the Y / Z electrode driver 503.

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The glass substrate 510 includes a front substrate 511 having a Y electrode and a Z electrode and a rear substrate 513 having an X electrode, and the Y electrode is electrically connected to the Y / Z electrode driver 503. The X electrode is electrically connected to the X electrode driver 501.

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In addition, the conductive sheet 520 is attached to the entire light emitting region of the rear substrate 513 to provide an equipotential surface for making the uniform charge distribution a non-uniform charge distribution due to incorrect alignment of each electrode, and Y / Z electrode The driver 503 and the Z electrode are electrically connected.

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That is, since the conductive sheet 520 is attached to the entire light emitting region of the rear substrate 513 shown in FIG. 3, it provides a single equipotential surface, thereby making the uneven charge distribution due to incorrect alignment of the electrodes to a uniform charge distribution. . In addition, since the conductive sheet 520 is attached to the entire emission area, the inductance component is minimized.

The conductive sheet 520 may be divided into a plurality of pieces and attached to the rear substrate 513.

The heat dissipation sheet 530 serves to bond the heat dissipation plate 500 to the rear substrate 513 and the conductive sheet 520.

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The plasma display panel according to the present invention minimizes mis-discharge and minimizes inductance due to the conductive sheet 520 attached to the entire emission area of the rear substrate 513.

As such, those skilled in the art will appreciate that the present invention can be implemented in other specific forms without changing the technical spirit or essential features thereof. Therefore, the above-described embodiments are to be understood as illustrative in all respects and not as restrictive.

The scope of the present invention is shown by the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

As described above, the present invention improves image quality and increases driving voltage margin by minimizing erroneous discharge and minimizing inductance due to the conductive sheet attached to the entire light emitting area of the rear substrate.

Claims (8)

A plasma display panel comprising a front substrate on which a Y electrode and a Z electrode are formed, and a back substrate on which an X electrode is formed: A conductive sheet attached to the entire light emitting region of the rear substrate; And a heat sink thermally connected to the conductive sheet to dissipate heat from the conductive sheet to the outside. delete delete The method of claim 1, And the conductive sheet is divided into a plurality of pieces and attached to the entire light emitting area of the rear substrate. delete The method of claim 1, And the conductive sheet is electrically connected to a Z electrode. delete The method of claim 1, And the heat dissipation sheet is formed to be mechanically bonded to the conductive sheet.

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