KR20080020327A - Plasma display panel - Google Patents

Abstract

A plasma display panel is provided to improve a ventilating property of the PDP(Plasma Display Panel) while decreasing a non-light emitting region by using a substrate without an interconnection unit as a ventilating path. A plasma display panel includes plural substrates, plural sustain discharge electrode pairs(130), and an address electrode(160). First and second substrates are opposed to each other. The sustain discharge electrode pairs are arranged between the first and second substrates and include X and Y electrodes, on which a sustain discharge voltage is applied. The address electrode is arranged between the first and second substrates in a direction normal to the sustain discharge electrode pair. An address discharge voltage is applied on the address electrode. Edge regions of the substrate outside an overlapped area between the first and second substrates have different widths.

Description

Plasma display panel {Plasma display panel}

1 is an exploded perspective view illustrating a part of a plasma display panel according to an embodiment of the present invention;

2 is a configuration diagram showing a state in which the discharge electrode of FIG. 1 is disposed;

3 is a block diagram showing a driving device of the panel of FIG. 1;

FIG. 4 is a schematic view illustrating the panel of FIG. 1 partitioned by region. FIG.

<Description of Symbols for Major Parts of Drawings>

100 ... plasma display panel

110 ... first substrate 120 ... second substrate

131 ... X electrode 132 ... Y electrode

160 ... address electrode 410 ... display

420 Dummy 430

440 ... connection 450 ... interconnection

451 ... First Zone 452 ... Second Zone

453 ... 3rd Zone 454 ... 4th Zone

490 Exhaust

The present invention relates to a plasma display panel, and more particularly, to a plasma display panel in which a structure of a region where an address electrode is connected to an external terminal is changed.

In general, a plasma display panel injects and discharges a discharge gas between two substrates on which a plurality of discharge electrodes are formed, and excites the phosphor of the phosphor layer by the ultraviolet rays generated thereby to produce a desired number, letter, or graphic. Refers to a flat display device.

Such a plasma display panel is classified into a direct current type, an alternating current type, and a mixed type according to a type of driving voltage applied to a discharge cell, for example, a discharge type, and can be classified into a counter discharge type and a surface discharge type according to a configuration of discharge electrodes. There is a number.

In the conventional three-electrode AC plasma display panel, a panel is provided with a first substrate and a second substrate, and an inner surface of the first substrate is provided with a sustain discharge electrode pair having an X electrode and a Y electrode, and is embedded in the panel. A first dielectric layer is formed, a protective film layer is formed on a surface of the first dielectric layer, and a protective film layer is formed on an inner surface of the second substrate in a direction crossing the pair of sustain discharge electrodes. A partition wall is formed between the first substrate and the second substrate to partition the discharge cell, and a red, green, and blue phosphor layer is formed in the partition wall.

In the conventional plasma display panel having the above structure, when an electrical signal is applied to the address electrode and the Y electrode, a discharge cell for light emission is selected, and when an electrical signal is alternately applied to the plurality of sustain discharge electrode pairs, Visible light is emitted from the phosphor of the phosphor layer applied in the selected discharge cell, so that a still image or a moving image can be realized.

In a conventional plasma display panel, a discharge electrode is electrically connected to an external terminal in a region outside a region where the first substrate and the second substrate overlap, a so-called interconnection portion.

However, since the interconnection portion is a structure in which only at least one of the first substrate and the second substrate is exposed, the mechanical strength is weak and it is a problem in handling the product in packaging, transportation, and quality inspection. Make it look bigger.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object thereof is to provide a plasma display panel in which the number of areas of the interconnection portion in which the discharge electrodes are electrically connected to the external terminals is reduced.

Another object of the present invention is to provide a plasma display panel having a reduced width outside an area where a plurality of substrates overlap.

In order to achieve the above object, the plasma display panel according to an aspect of the present invention,

A plurality of substrates having a first substrate and a second substrate disposed to face the first substrate;

A plurality of sustain discharge electrode pairs disposed between the first substrate and the second substrate and having an X electrode and a Y electrode to which a sustain discharge voltage is applied;

An address electrode disposed between the first substrate and the second substrate in a direction crossing the sustain discharge electrode pair, and having an address discharge voltage applied thereto;

The edge regions of the substrate in the direction in which the address electrodes are disposed among the regions where the first substrate and the second substrate overlap with each other are formed to have different widths.

The edge region may include a first region formed at one edge of the substrate in a direction parallel to the direction in which the address electrode is disposed, and a second region formed at the other edge of the substrate opposite to the first region.

Furthermore, the width of the first region is larger than the width of the second region.

In addition, the address electrode is electrically connected to an external terminal in the first region.

Further, the address electrode is characterized in that the single scan drive.

Plasma display panel according to another aspect of the present invention,

A plurality of substrates having a first substrate and a second substrate disposed opposite to and coupled to the second substrate;

Disposed between the first substrate and the second substrate in a direction crossing each other, a sustain discharge electrode pair to which a sustain discharge voltage is applied, and disposed in a direction crossing the sustain discharge electrode pair, and an address discharge voltage is applied; A plurality of discharge electrodes having a plurality of address electrodes;

The substrate may include a display unit for implementing an image, a connection unit formed at an edge of the display unit and having a discharge electrode extending from the display unit, and an edge portion of the connection unit from an edge of the substrate to an outermost edge of the substrate. Partitioned by an interconnection section electrically connected to the terminals,

The interconnection unit may include one region partitioned in a direction in which the address electrode is disposed and a second region opposite to the first region, and the first region may be relatively wider than the second region.

In addition, the region of the connecting portion toward the first region is characterized in that the width is wider than the region of the connecting portion toward the second region.

Furthermore, an exhaust hole is formed in the connection portion.

Hereinafter, a plasma display panel according to an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 illustrates a partial cutting of the plasma display panel 100 according to an exemplary embodiment of the present invention.

Referring to the drawings, the plasma display panel 100 includes a first substrate 110 and a second substrate 120 disposed in parallel with the first substrate 110. Frit glass is coated on the first substrate 110 and the second substrate 120 along edges of opposed inner surfaces to form a sealed discharge space.

The first substrate 110 may be a transparent substrate such as soda lime glass, a semi-transparent substrate, a reflective substrate, a colored substrate, or the like.

A sustain discharge electrode pair 130 is disposed on an inner surface of the first substrate 110. The sustain discharge electrode pair 130 includes an X electrode 131 and a Y electrode 132, and the X electrode 131 and the Y electrode 132 are arranged in pairs for each discharge cell.

The X electrode 131 is a first bus electrode line 133 disposed along the X direction of the panel 100, and a first protruding toward the Y electrode 132 from the first bus electrode line 133. The transparent electrode 134 is included. The Y electrode 132 is a second bus electrode line 135 disposed along the X direction of the panel 100 and a second projecting toward the X electrode 131 from the second bus electrode line 135. The transparent electrode 136 is included.

The first bus electrode line 133 and the second bus electrode line 135 are strip-shaped extending across adjacent discharge cells formed along the X direction of the panel 100 along opposite edges of the discharge cells. The first transparent electrode 134 and the second transparent electrode 136 are disposed independently of each discharge cell, and have a rectangular cross section.

In this case, the first bus electrode line 133 and the second bus electrode line 135 are made of a metal material such as paste or chromium-copper-chrome having excellent conductivity, and the first transparent electrode 134 and The second transparent electrode 136 is made of a transparent conductive film such as an ITO film.

The sustain discharge electrode pair 130 is buried by the first dielectric layer 140. The first dielectric layer 140 is coated using a transparent dielectric, for example, a highly dielectric material such as PbO-B ₂ O ₃ -SiO ₂ .

A passivation layer 150 made of magnesium oxide (MgO) is formed on the surface of the first dielectric layer 140 to increase secondary electron emission amount. The passivation layer 150 is deposited on the surface of the first dielectric layer 140.

The second substrate 120 may be a transparent substrate, a semi-transmissive substrate, a reflective substrate, a colored substrate, or the like. The address electrode 112 is disposed on an inner surface of the second substrate 120 in a direction crossing the Y electrode 132.

The address electrode 160 extends across the discharge cells disposed adjacent to each other along the Y direction of the panel 100, and has a strip shape. The address electrode 160 is made of a metal material having excellent conductivity, such as silver paste.

The address electrode 160 is buried by the second dielectric layer 170. The second dielectric layer 170 is made of the same high dielectric material as the first dielectric layer 140.

The partition wall 180 is disposed between the first and second substrates 110 and 120. The partition wall 180 is formed to define a discharge cell and to prevent cross talk between adjacent discharge cells.

The partition wall 180 includes a first partition wall 181 disposed in the X direction of the panel 100 and a second partition wall 182 disposed in the Y direction of the panel 100. The partition wall 181 integrally extends in the opposite direction from the inside of the second partition wall 182 arranged adjacently, and partitions a matrix type discharge space.

The partition wall 180 is not limited to the above-described embodiment and is not limited to any structure as long as it can define a discharge cell. Accordingly, the cross-sectional view of the discharge cell is not only rectangular but also polygonal or circular in shape. Various embodiments are possible, such as elliptical.

Meanwhile, in the discharge space partitioned by the first substrate 110, the second substrate 120, and the partition wall 180, neon (Ne) -xenon (Xe), helium (He) -xenon (Xe), and the like. The same discharge gas is injected.

In the discharge cell, there is formed a phosphor layer 190 of a plurality of colors for colorization which is excited by ultraviolet rays generated from the discharge gas and emits visible light. The phosphor layer 190 may be coated on any area of the discharge cell. In the present embodiment, the phosphor layer 190 is formed on the upper side of the second dielectric layer 170 and on the inner side surface of the partition wall 180.

At this time, the phosphor layer 190 is composed of red, green and blue phosphor layers, but is not necessarily limited thereto. In the present embodiment, the red phosphor layer is made of (Y, Gd) BO ₃ ; Eu ⁺³ , the green phosphor layer is made of Zn ₂ SiO ₄ : Mn ²⁺ , and the blue phosphor layer is BaMgAl ₁₀ O ₁₇ : It consists of Eu ²⁺ .

FIG. 2 illustrates a state in which the discharge electrodes of FIG. 1 are disposed.

Referring to the drawings, the X electrode 131 is disposed across the substrate along the X direction of the panel 100. The Y electrode 132 is also disposed across the substrate along the X direction of the panel 100 and alternately positioned with the X electrode 131. The address electrode 160 is disposed across the substrate along the Y direction of the panel 100 and is positioned in a direction crossing the X electrode 131 and the Y electrode 132.

In addition, the X electrode 131 is integrally connected by a short bar 130a in one region of the panel 100 to apply the same discharge voltage to each electrode line during the sustain discharge period. On the other hand, the Y electrode 132 and the address electrode 160 are separated independently so that different discharge voltages are applied to each electrode line.

To this end, the X electrode 131 is electrically connected to the X driver 210 in order to process the X driving control signal and apply a common voltage. The Y electrode 132 is electrically connected to the Y driver 220 in order to process the Y drive control signal and apply a scan voltage.

The X driver 210 is disposed in one region of the panel 100 in the X direction (right side in the drawing), and the Y driver 220 is disposed in the other region of the panel 100 in the X direction. Left in the drawing)

The address electrode 160 is electrically connected to the address driver 230 to process the address drive control signal to generate a display data signal having an address voltage. The address driver 230 is disposed in one region (lower side in the drawing) of the panel 100 in the Y direction.

3 illustrates a driving device of the panel 100 of FIG. 1.

Referring to the drawings, the driving device 200 of the plasma display panel 100 includes an image processor 240, a logic controller 250, an address driver 230, an X driver 210, and a Y driver 220. do.

The image processor 240 converts an external analog image signal into a digital signal to generate internal image signals. The internal video signal may be 8 bits of red (R), green (G), and blue (B) image data, clock signals, vertical and horizontal synchronization signals, and the like. The logic controller 250 generates driving control signals S _A , S _Y , and S _X according to an internal image signal from the image processor 240.

In this case, the driving unit such as the address driver 230, the X driver 210, and the Y driver 220 receives input from the driving control signals S _A , S _Y , and S _X to generate respective driving signals, and generates the respective driving signals. The applied driving signal to each of the electrode lines.

That is, the address driver 230 applies a display data signal corresponding to the address signal S _A input from the logic controller 250 to the address electrode lines 160 (see FIG. 2). The X driver 210 processes the X driving control signal S _X input from the logic controller 250 and applies the X driving control signal S _X to the lines of the X electrode 131. The Y driver 220 processes the Y driving control signal S _Y input from the logic controller 250 and applies the Y driving control signal S _Y to the lines of the Y electrode 132.

Here, a single scan driving is sequentially performed in the address electrode 160 from the lower side of the panel 100 to the upper direction, and edge regions of the substrate in the direction in which the address electrode 160 is disposed are mutually different. It is formed to have a different width.

In more detail, it is as following.

FIG. 4 shows the panel 100 of FIG. 1 partitioned by region.

Hereinafter, the same reference numerals as in the above-described drawings indicate the same members having the same function.

Referring to the drawings, the phosphor 100 of the phosphor layer 190 is applied to the center of the panel 100 when a predetermined discharge voltage is applied to the X electrode 131, the Y electrode 132, and the address electrode 160. Herein, a display portion 410 for implementing an image is divided.

A dummy portion 420 is partitioned outward from the edge of the display portion 410 in the Y direction of the panel 100. The dummy part 420 may additionally display an image, and is introduced to prevent an edge effect of discharge unevenness that may occur in the outermost discharge cell in the display area 410.

A margin 430 is partitioned outward in the X direction of the panel 100 from the edge of the display unit 410 and outward in the Y direction of the panel 100 from the edge of the dummy part 420. The margin portion 430 is an area partitioned to secure a design margin for the display portion 410 and the dummy portion 420.

The connection part 440 is formed at an outer side from the edge of the clearance part 430. The connection part 440 is an area in which the X electrode 131, the Y electrode 132, and the address electrode 160 extend to electrically connect to an external terminal. The connection part 330 is provided with an exhaust hole 490 for evacuation during the assembly process of the panel 100, and the exhaust hole 490 is sealed after the vacuum exhaust process.

An interconnection portion 450 is partitioned from the edge of the connection portion 440 to the outermost edge of the first substrate 110 or the second substrate 120. The interconnection portion 450 corresponds to an outer side of the region where the first substrate 110 and the second substrate 120 overlap each other.

The interconnection unit 450 is an area in which the X electrode 131, the Y electrode 132, and the address electrode 160 are electrically connected to an external terminal such as a flexible printed cable. The first substrate 110 or the second substrate 120 does not overlap another substrate, and is a region where a predetermined width is exposed to a single substrate.

The interconnection unit 450 includes first to fourth regions 451 to 454. The first region 451 is partitioned at one edge of the substrate in a direction parallel to the direction in which the X electrode 131 and the Y electrode 132 are disposed (the X direction of the panel), and the second region 452. Is partitioned at the other edge of the substrate in a direction opposite to the first region 451. In this case, the Y electrode 132 is electrically connected to an external terminal in the first region 451, and the X electrode 131 is electrically connected to an external terminal in the second region 452.

In addition, the third region 453 is partitioned at one edge of the substrate in a direction parallel to the direction in which the address electrode 160 is disposed (the Y-direction of the panel), and the fourth region 454 is the third region. It is partitioned at the other edge of the board | substrate in the direction opposite to the area 453. As shown in FIG. In this case, the address electrode 160 is electrically connected to an external terminal in the fourth region 454.

Here, since the address electrode 160 is sequentially driven in a single scan along one direction of the panel 100, the address electrode 160 is substantially an area in which the address electrode 160 is not connected to an external terminal in the third region 453.

For this reason, the width of the fourth region 454 is relatively wider than that of the third region 453. For example, the width of the third region 453 is preferably overlapped with the first substrate 110 and the second substrate 120 so that no substrate is exposed, and the width of the exposed region is at most 5 millimeters or less. It is desirable to maintain the width of. In contrast, the width of the fourth region 454 is such that the address electrode 160 can be electrically connected to an external terminal.

In addition, since the address electrode 160 is not electrically connected to the external terminal in the third region 453, the connection portion 440 may be the fourth region 454 than the portion corresponding to the third region 453. And corresponding portions are formed relatively wide. The exhaust hole 490 is disposed in the connection portion 440 toward the third region 453.

As described above, the plasma display panel of the present invention can obtain the following effects.

First, as the number of interconnections in the direction in which the address electrodes are arranged can be reduced, it is easy to handle the product.

Secondly, the area of the substrate on which the interconnection portion is not formed can be used only as the exhaust passage, so that the exhaust characteristics can be maintained while reducing the non-light emitting region in the panel.

Although the present invention has been described with reference to the embodiments shown 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.

Claims (11)

A plurality of substrates having a first substrate and a second substrate disposed to face the first substrate; A plurality of sustain discharge electrode pairs disposed between the first substrate and the second substrate and having an X electrode and a Y electrode to which a sustain discharge voltage is applied; An address electrode disposed between the first substrate and the second substrate in a direction crossing the sustain discharge electrode pair, and having an address discharge voltage applied thereto; And an edge region of a substrate in a direction in which the address electrode is disposed among regions outside the overlapping region of the first substrate and the second substrate, having a different width. The method of claim 1, The edge region includes a first region formed at one edge of the substrate in a direction parallel to the direction in which the address electrode is disposed, and a second region formed at the other edge of the substrate in a direction opposite to the first region. The method of claim 2, And the width of the first area is greater than the width of the second area. The method of claim 3, wherein And the address electrode is electrically connected to an external terminal in the first region. The method of claim 3, wherein And the width of the second region is 5 millimeters or less. The method of claim 1, And the address electrode is driven in a single scan. A plurality of substrates having a first substrate and a second substrate disposed opposite to and coupled to the second substrate; The first substrate and the second substrate are disposed in a direction crossing each other, and a sustain discharge electrode pair to which a sustain discharge voltage is applied, and a sustain discharge electrode pair are disposed to cross a direction, and an address discharge voltage is applied. A plurality of discharge electrodes having an address electrode; The substrate may include a display unit for implementing an image, a connection unit formed at an edge of the display unit and having a discharge electrode extending from the display unit, a connection unit formed from an edge of the connection unit to an outermost edge of the substrate, and the discharge electrode being external to the display unit. Partitioned by an interconnection section electrically connected to the terminals, The interconnection portion includes a first region partitioned in a direction in which the address electrode is disposed and a second region opposite to the second region, wherein the first region is relatively wider than the second region. panel. The method of claim 7, wherein And the width of the second region is 5 millimeters or less. The method of claim 7, wherein And the address electrode is driven in a single scan. The method of claim 7, wherein And the area of the connection part toward the first area is wider than the area of the connection part toward the second area. The method of claim 10, And a vent hole formed in the connection portion.

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