KR100751372B1 - Display panel - Google Patents

Abstract

A display panel is provided to connect smoothly a discharge electrode with a substrate by connecting the discharge electrode formed on a barrier rib layer and a terminal part formed on a substrate through a medium electrode. A pair of substrates(211,212) are disposed opposite to each other. A barrier rib(220) is disposed between the pair of substrates in order to define a plurality of discharge cells. A plurality of discharge electrodes(230) are disposed in the barrier rib in order to surround a part of the discharge cells. A terminal part(236) is disposed on a facing surface of the substrates in order to be electrically connected to the outside. A medium electrode(238) is positioned between the terminal part and the discharge electrodes in order to connect electrically the terminal part with the discharge electrodes. First and second discharge electrodes are arranged from one substrate to the other substrate. The medium electrode is used for connecting at least one of the first and second discharge electrodes to the terminal part.

Description

Display panel

1 is an exploded perspective view of a typical plasma display panel.

2 is a partially cutaway perspective view showing a plasma display panel having an electrode terminal connection structure according to a first embodiment of the present invention.

3 is a cross-sectional view taken along line III-III of FIG. 2.

4 is a cross-sectional view taken along line IV-IV of FIG. 3.

5 is a partially cutaway perspective view illustrating a plasma display panel having an electrode terminal connection structure according to a second embodiment of the present invention.

FIG. 6 is a cross-sectional view taken along line VI-VI of FIG. 5.

FIG. 7 is a cross-sectional view taken along the line VII-VII of FIG. 6.

<Brief description of symbols for the main parts of the drawings>

100, 200: plasma display panel,

111, 211: first substrate, 112, 212: second substrate,

130, 230: discharge electrode, 136, 236: terminal portion,

120, 220: partition wall, 138, 238: intermediate electrode.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display panel, and more particularly, to a new structure display panel in which a discharge electrode is formed in a partition layer interposed between substrates to partition a discharge space.

Among various display panels, a plasma display panel (PDP) has recently attracted attention as a replacement for a conventional cathode ray tube display device. In the plasma display panel, a discharge gas is filled between two substrates on which a plurality of discharge electrodes are formed, a discharge voltage is applied to the discharge electrodes, and a phosphor formed in a predetermined pattern is excited by ultraviolet rays generated thereby to obtain a desired image. to be.

1 is an exploded perspective view of a typical plasma display panel.

Referring to the drawings, the conventional AC plasma display panel 10 includes an upper plate 50 for displaying an image to a user and a lower plate 60 coupled in parallel thereto. On the front substrate 11 of the upper plate 50, a sustain electrode pair 12 in which the X electrode 31 and the Y electrode 32 are paired is disposed. On the rear substrate 21 of the lower substrate 60 opposite to the surface on which the sustain electrode pairs 12 of the front substrate 11 are disposed, the address electrodes 22 are electrodes 31 and 32 of the front substrate 11. It is arranged to intersect with.

Each of the first dielectric layer 15 and the first substrate 15 may be embedded in each of the front substrate 11 provided with the sustain electrode pairs 12 and the rear substrate 21 provided with the address electrodes 22. 2 dielectric layers 25 are formed. A protective layer 16, usually made of MgO, is formed on the rear surface of the first dielectric layer 15. The front surface of the second dielectric layer 25 maintains a discharge distance and prevents electro-optical crosstalk between discharge cells. The partition 30 is formed.

Red, green, and blue light emitting phosphors 26 are coated on both sides of the partition wall 30 and on the entire surface of the second dielectric layer 25 on which the partition wall 30 is not formed.

In this general surface discharge plasma display panel 10, visible light emitted from the phosphor 16 in the discharge space passes through the upper plate 50 at the time of discharge, and is visible due to various components formed in the upper plate 50. There is a problem that the transmittance of the line is only about 60%.

In addition, in the conventional surface discharge plasma display panel 10, the electrodes causing the discharge are formed on the upper surface of the discharge space, that is, the inner surface of the upper plate 50 through which visible light passes, so that the discharge is generated and diffused on the inner surface thereof. There is a problem that the luminous efficiency is low.

In addition, in the conventional surface discharge plasma display panel 10, when the particles are used for a long time, the charged particles of the discharge gas cause ion sputtering to the phosphor by an electric field, causing permanent afterimage.

Furthermore, in the new structure display panel in which the discharge electrode is formed in the partition layer interposed between the substrates and partitions the discharge space, a terminal portion for electrically connecting the external drive device to supply power to the discharge electrode is provided on the substrate. Is formed. Thus, a constant height difference occurs between the electrodes and the terminal portion. Thereby, the electrical connection between the electrodes and the terminal portion may not be made smoothly.

The present invention provides a display panel capable of smoothing electrical connection between a discharge electrode having a different layer and a substrate by connecting a discharge electrode formed on a barrier layer and a terminal portion formed on a substrate through a medium electrode. For the purpose of

The present invention includes a pair of substrates arranged to be spaced apart from each other; Barrier ribs disposed between the pair of substrates to partition a plurality of discharge cells; Discharge electrodes disposed on the partition wall to surround at least a portion of the discharge cell; A terminal unit disposed on opposite surfaces of at least one of the substrates and electrically connected to the outside; And a medium electrode disposed between the terminal portion and the discharge electrode, the intermediate electrode electrically connecting the terminal portion and the discharge electrode.

Preferably, the substrates include a first region in which the barrier rib is disposed and a second region in which the barrier rib is not disposed.

Preferably, the terminal portion is located in the second region of the substrate.

Preferably, the discharge electrode includes a discharge part positioned in the partition wall and a connection part extending from the partition wall to the second region.

Preferably, the intermediate electrode connects the connection portion and the terminal portion.

Preferably, the intermediate electrode is positioned in a second region on a surface on which the terminal portion of the substrate is formed.

It is preferable that the shape of one cross section of the discharge cell is circular or elliptical.

It is preferable that the grooves are formed on a surface of the first substrate facing the discharge cells, and further include phosphor layers on which phosphors are applied.

Preferably, the discharge electrodes are disposed in the partition wall.

Preferably, each of the discharge electrodes includes a first discharge electrode and a second discharge electrode which are spaced apart from each other in the direction of the substrate toward the other substrate.

It is preferable that the first discharge electrode and the second discharge electrode, in which the first discharge electrode and the second discharge electrode extend in the same direction, extend in different directions.

Further comprising address electrodes spaced apart from the discharge electrode pairs in the substrate direction and extending in a direction different from the discharge electrode pairs;

It is preferable to surround at least a portion of each discharge cell arranged along a direction in which the address electrodes extend, respectively.

It is preferable to further include address electrodes extending in a direction different from the discharge electrode pairs on one of the substrates.

It is preferable to further include a dielectric layer formed on the substrate to include a dielectric material to cover the address electrode.

Preferably, the discharge electrode is at least one of a scan electrode, a common electrode, and an address electrode.

It is preferable that the height of the intermediate electrode is greater than the height from the substrate on which the terminal portion is formed to the discharge electrode.

Another aspect of the invention, the substrate including a first substrate and a second substrate disposed to be spaced apart from each other; A partition wall disposed between the first substrate and the second substrate to partition a plurality of discharge cells; Discharge electrodes disposed on the partition wall; A terminal portion formed on at least one of the first substrate and the second substrate to face each other and electrically connected to the outside; And a medium electrode disposed between the terminal portion and the discharge electrode, the intermediate electrode electrically connecting the terminal portion and the discharge electrode.

According to the present invention, by connecting the discharge electrode formed on the barrier layer and the terminal portion formed on the substrate through the intermediate electrode, it is possible to facilitate the electrical connection between the discharge electrode and the substrate having different layers.

Hereinafter, a plasma display panel and a display apparatus including the same according to exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a partially cutaway perspective view showing a plasma display panel having an electrode terminal connection structure according to a first embodiment of the present invention. 3 is a cross-sectional view taken along line III-III of FIG. 2. 4 is a cross-sectional view taken along line IV-IV of FIG. 3.

Referring to the drawings, the plasma display panel 100 having the electrode terminal connection structure according to the first embodiment of the present invention is a pair of substrate 110, partition wall 120, sustain electrode pair 130, address electrode 140 and the signal transmission means 150.

The pair of substrates 110 may include a first substrate 111 and a second substrate 112. The first substrate 111 and the second substrate 112 may be spaced apart from each other at a predetermined interval and face each other. It is arranged to see. The first substrate 111 is made of transparent glass, so that visible light can be transmitted.

The first substrate 111 has a substrate protective layer 111a on its rear surface. The substrate protective layer 111a is made of magnesium oxide (MgO), which prevents the first substrate 111 from being damaged by sputtering of plasma particles and lowers the discharge voltage by emitting secondary electrons. Do it.

The first substrate 111 of the first embodiment includes a substrate protective layer 111a on its rear surface, but the first substrate of the present invention is not limited thereto and may not include the substrate protective layer 111a.

The first embodiment has a structure in which the first substrate 111 is made of transparent glass so that visible light generated from the phosphor layer 180 goes out through the first substrate 111. Without limiting, the second substrate 112 may be made of a transparent material, and visible light generated from the phosphor layer 180 may go out through the second substrate 112.

The partition wall 120 includes a first partition wall 121 and a second partition wall 122. The first partition wall 121 and the second partition wall 122 define a plurality of discharge cells 160 together with the first substrate 111 and the second substrate 112. The partition wall 120 of the first embodiment is configured by separating the first partition wall 121 and the second partition wall 122, but the present invention is not limited thereto, and the partition wall of the present invention may be integrally formed.

The length of the width of the first substrate 111 and the second substrate 112 is larger than the length of the partition wall 120 is formed. That is, the substrate 110 includes a first region A1 in which the partition wall is disposed and a second region A2 in which the partition wall is not disposed.

The first substrate 111 and the second substrate 112 together with the partition wall 120 sufficiently limit the discharge cell 160, and the partition wall 120 among the first substrate 111 and the second substrate 112. Installation of the signal transmission means 150 can be facilitated in the second region A2, which is not disposed.

In addition, in the first embodiment, the cross-section of the discharge cells 160 partitioned by the partition wall 120 is illustrated as being rectangular, but the present invention is not limited thereto, and polygons such as triangles, pentagons, or the like may be circular, elliptical. It may be formed in various shapes such as.

The first partition wall 121 is disposed between the first substrate 111 and the second substrate 112. The first partition wall 121 is made of a dielectric material, and a pair of sustain electrodes is formed inside the first partition wall 121. 130 is disposed, and the first partition wall 121 extends from the first substrate 111.

The dielectric constituting the first partition wall 121 prevents charged particles from directly colliding with the sustain electrode pairs 130 and damages them, and induces charged particles to accumulate wall charges. Such dielectrics include PbO and B. ₂ O ₃ , SiO _2, and the like are used.

The first partition wall 121 of the first embodiment is limited to the one extending from the first substrate 111, but the present invention is not limited thereto. That is, the first partition wall of the present invention may be formed extending from the second partition wall. In addition, the first partition wall of the present invention is formed by embedding the sustaining electrode pair 130 in a dielectric to form a sheet, forming a hole corresponding to the discharge space in the sheet, and then placing the sustain electrode pair 130 on the second partition wall. May be

The sustain electrode pair 130 disposed inside the first partition wall 121 includes a common electrode 131 and a scan electrode 132 as discharge electrodes.

The second partition wall 122 is made of a dielectric material and is disposed between the first substrate 111 and the second substrate 112 and is in close contact with the first partition wall 121.

In the first partition wall 121 of the plasma display panel 100 of the first exemplary embodiment, the sustain electrode pair 130 as the discharge electrode is disposed, so that the common electrode 131 and the scan electrode constituting the sustain electrode pair 130 are disposed. It is not necessary for the 132 to be a transparent electrode, and it can be formed of a metal material having excellent conductivity and low resistance such as Ag, Al, or Cu. As a result, the response speed according to the discharge is fast, the signal is not distorted, and the power consumption required for the sustain discharge can be reduced.

In addition, in the first embodiment of the present invention, the shape of the common electrode 131 and the scan electrode 132 is formed in a straight line, but the present invention is not limited thereto, and the common electrode is formed so as to surround the discharge cell 160. The 131 and the scan electrode 132 may be configured in various shapes such as a ladder shape, a ring shape, or a rectangular ring shape. In this case, since the sustain discharge occurs in the vertical direction in all aspects defining the discharge cell 160, the discharge area is relatively wider, the low-voltage driving is possible, and the luminous efficiency is improved.

On the other hand, the address electrode 140 is formed in a stripe shape on the front surface of the second substrate 112 so as to cross the common electrode 131 and the scan electrode 132. The address electrode 140 performs an address discharge together with the scan electrode 132 to select a discharge cell in which the discharge will occur.

In the first embodiment, since the shapes of the common electrode 131 and the scan electrode 132 are formed to extend in the same direction as straight lines, the address electrode ( 140) should be formed separately, but the present invention is not limited thereto. That is, when the shape of the discharge portion of the common electrode and the scan electrode of the plasma display panel of the present invention is formed in a ladder shape, a ring shape, or the like so as to surround the discharge cell, the addressing action is achieved by arranging the common electrode and the scan electrode to cross each other. In this case, the address electrode 140 is not necessary separately.

The dielectric layer 170 is stacked on the address electrode 140. The dielectric layer 170 is formed as a dielectric capable of inducing charge while preventing cations or electrons from colliding with the address electrode 140 during discharge, and damaging the address electrode 140. Such dielectrics include PbO and B _2. O ₃ , SiO ₂ and the like are used.

The phosphor layer 180 is formed on the bottom surface of the discharge cell 160 and the side surface of the second partition wall 122. In the present invention, the position where the phosphor layer 180 is disposed is not limited thereto, and the discharge cell 160 It may be disposed at various locations in the discharge cell 160, such as may be formed on the upper surface of the).

The phosphor layer 180 has a component for generating visible light by receiving ultraviolet rays, and the red phosphor layer formed in the red light emitting discharge cell includes a phosphor such as Y (V, P) O ₄ : Eu, and is a green light emitting discharge cell. The green phosphor layer formed at includes a phosphor such as Zn ₂ SiO ₄ : Mn, and the blue phosphor layer formed at the blue light emitting discharge cell includes a phosphor such as BAM: Eu.

On the other hand, the barrier rib layer 190 is formed on the side surface of the first partition wall 121 in which the phosphor layer 180 is not formed.

The barrier rib layer 190 is made of magnesium oxide (MgO) to prevent damage to the barrier ribs and electrodes formed of the dielectric by sputtering of plasma particles, and to discharge the secondary electrons to lower the discharge voltage. Do it.

The discharge cells 160 defined by the first substrate 111, the second substrate 112, and the partition wall 120 are filled with discharge gases such as Ne, Xe, He, and the like, and mixed gases thereof.

On the other hand, as described above, the sustain electrode pair 130 as the discharge electrode is composed of a common electrode 131 and the scanning electrode 132.

Since the common electrode 131 and the scan electrode 132 are made symmetric with each other to facilitate connection with each driving circuit board (not shown) by using the signal transmission means 150, and the structure thereof is the same, Hereinafter, the electrode terminal unit connection structure will be described with reference to the common electrode 131.

The common electrode 131 includes a discharge part 131a and a connection part 131b. The discharge part 131a is disposed in the first partition wall 121 to perform discharge, and the connection part 131b is disposed at the end of the discharge part 131a and disposed in the second area A2 of the first partition wall 121. do. That is, the intermediate electrode 138 connects the connecting portion 131b and the terminal portion 136.

At this time, it is preferable that the height of the intermediate electrode 138 is sufficiently high to overcome the height difference between the terminal portion 136 and the connecting portion 131b. In one embodiment, the height of the intermediate electrode 138 is preferably larger than the height from the substrate on which the terminal portion is formed to the discharge electrode.

Meanwhile, the terminal portion 136 is formed on the dielectric layer 170, and the intermediate electrode 138 electrically connects the connection portion 131b and the terminal portion 136. The intermediate electrode 138 is made of a conductive material, and may include a metal material having excellent conductivity and low resistance, such as Ag, Al, or Cu, which is the same as the material of the discharge electrode. In this case, the terminal unit 136 and the intermediate electrode 138 are positioned in the second area A2 of the substrate.

As shown in FIG. 2, the region in which the discharge is performed to form an image among the discharge cells 160 is the first except for the second region A2, which is a dummy region of the edge of the pair of substrates 110. In the region A1, the intermediate electrode is located in the second region A2, and is designed so as not to affect the discharge action.

The signal transmitting means 150 is electrically connected to one end of the terminal portion 136 that is not in contact with the intermediate electrode 138. The signal transmitting means 150 of the first embodiment has a dielectric layer among the surfaces constituting the terminal portion 136. FIG. It contacts the surface located in the direction opposite to the direction in which 170 is located.

The signal transmitting means 150 may be a flexible printed cable (FPC) or a tape carrier package (TCP), in which case the individual pieces of the flexible printed cable or tape carrier package are made up. Terminal portions 136 correspond to the conductive wires one-to-one, respectively.

At this time, the connection between each conductive wire of the signal transmission means 150 and the terminal portion 136 may be made by an anisotropic conductive film.

Since the structure of the common electrode 131 described above has a symmetrical structure with the scan electrode 132 as described above, the electrode terminal connection structure of the scan electrode 132 also includes a medium electrode 138 and the like. Corresponding to the electrode terminal portion connecting structure of 131 has the same structure.

That is, although not shown in FIG. 2 and FIG. 3, the arrangement structure of the partition wall 120, the connection part 131b of the common electrode 131, the terminal part 136, the intermediate electrode 138, and the signal transmission means 150 may be described. The edges opposite the plasma display panel 100 are also formed symmetrically.

On the other hand, in the first embodiment, the terminal portion 136 is formed on the dielectric layer 170, but the present invention is not limited thereto.

That is, since the dielectric layer 170 is not an essential component in constructing the plasma display panel, the dielectric layer 170 may be absent. In particular, as described above, when the discharge portion of the common electrode and the scan electrode of the plasma display panel has a ladder shape or a ring shape to surround the discharge cell, the discharge parts of the common electrode and the scan electrode are arranged to cross each other. As a result, the address electrode 140 is not necessary separately, and thus the dielectric layer 170 is not necessary.

Next, the operation of the plasma display panel 100 having the electrode terminal connection structure of the first embodiment will be described.

First, the partition wall 120, the sustain electrode pair 130, the terminal unit 136, and the intermediate electrode 138 of the plasma display panel 100 are installed in the above-described first embodiment. Then, the individual wires forming the signal transmission means 150 are electrically connected to the terminal portion 136.

After the assembly of the plasma display panel 100 and the injection of the discharge gas are completed, when a predetermined address voltage is applied between the address electrode 140 and the scan electrode 132 from an external power source, address discharge occurs. As a result of the discharge, the discharge cells 160 in which sustain discharge is to be generated are selected.

Thereafter, when the discharge sustain voltage is applied between the common electrode 131 and the scan electrode 132 of the selected discharge cell 160 via the signal transmission means 150, the common electrode 131 and the scan electrode 132 The discharge of the wall charges accumulated in) causes a sustain discharge, and the ultraviolet rays are emitted as the energy level of the discharged gas excited during the sustain discharge decreases.

In addition, the ultraviolet rays excite the phosphor 180 coated in the discharge cell 160. The energy level of the excited phosphor 180 is lowered to emit visible light, and the emitted visible light is emitted to the first substrate 111. Projecting the projected image forms an image that can be recognized by the user.

5 is a partially cutaway perspective view illustrating a plasma display panel having an electrode terminal connection structure according to a second embodiment of the present invention. FIG. 6 is a cross-sectional view taken along line VI-VI of FIG. 5. FIG. 7 is a cross-sectional view taken along the line VII-VII of FIG. 6.

Referring to the drawings, the plasma display panel 200 having the electrode terminal connection structure according to the second embodiment of the present invention is a pair of substrate 210, the partition wall 220, the discharge electrodes 230, the terminal portion ( 236, and the intermediate electrode 238.

The partition wall 220 is disposed between the pair of substrates 210 to partition the plurality of discharge cells 260. The discharge electrodes 230 are disposed inside the partition wall 220 to surround at least a portion of the discharge cell 260. The terminal unit 236 is disposed on opposite surfaces of at least one of the substrates 210 and is electrically connected to the outside. The intermediate electrode 238 is positioned between the terminal portion 236 and the discharge electrode 231 to electrically connect the terminal portion 236 and the discharge electrode 231.

The substrates 210 may include a first region A1 in which the partition wall 220 is disposed and a second region A2 in which the partition wall 220 is not disposed. The terminal portion 236 is positioned in the second area A2 of the substrate. The discharge electrode 231 includes a discharge part 231a positioned in the partition wall 220 and a connection part 232b extending from the partition wall 220 to the second area A2. The intermediate electrode 238 is positioned in the second area A2 on the surface where the terminal portion of the substrate is formed to connect the connection portion 231b and the terminal portion 236.

Discharge electrode 230 has a structure surrounding a part or all of the discharge cell, it is preferable that the shape of one cross section of the discharge cell is circular or oval.

The pair of substrates 210 includes a first substrate 211 and a second substrate 212, and the first substrate 211 and the second substrate 212 are spaced at a predetermined interval and face each other. Press lock is placed. The first substrate 211 is made of transparent glass so that visible light can be transmitted therethrough.

The substrate 210 in the second embodiment is limited to not having a substrate protective layer, but the present invention is not limited thereto. That is, according to the present invention, the substrate protection layer can be formed on the substrate, in which case the substrate protection layer prevents the substrate in contact with the discharge space from being damaged by the sputtering of the plasma particles, It discharges secondary electrons and lowers the discharge voltage. It mainly includes magnesium oxide (MgO).

The partition wall 220 is made of a dielectric material and defines a plurality of discharge cells 260 together with the first substrate 211 and the second substrate 212.

Since the discharge cell 260 has a circular cross section, the discharge cell 260 forms a cylindrical discharge space.

The length of the width of the first substrate 211 and the second substrate 212 is greater than the length of the partition wall 220 is formed, the first substrate 211 and the second substrate 212 and the partition wall 220 In addition, the discharge cell 260 may be sufficiently limited, and the installation of the signal transmission means 250 may be facilitated at a portion of the first substrate 211 and the second substrate 212 where the partition wall 220 is not disposed. have.

In addition, in the first embodiment, the cross-section of the discharge cell 260 partitioned by the partition wall 220 is illustrated as being circular, but the present invention is not limited thereto, and polygons such as triangles, squares, pentagons, or ellipses are provided. It may be formed in various shapes such as.

The partition wall 220 extends from the second substrate 211.

The partition wall 221 of the second embodiment is limited to being formed extending from the second substrate 211, but the present invention is not limited thereto. In other words, the partition wall of the present invention forms a sheet shape by embedding the sustain electrode pair 230 in the dielectric, and then forms a hole corresponding to the discharge space in the sheet, and then between the two substrates 210. By arrange | positioning, it can also form easily.

The dielectric constituting the partition wall 220 prevents the charged particles from directly colliding with the sustain electrode pairs 230 and damages them, and induces the charged particles to accumulate wall charges. Examples of such dielectrics include PbO and B ₂ O. ₃ , SiO ₂ and the like are used.

The sustain electrode pair 230 disposed in the partition wall 220 includes a common electrode 231 and a scan electrode 232 as discharge electrodes.

The common electrode 231 and the scan electrode 232 are arranged to surround each discharge cell 260, and have a structure in which rings having a circular shape in the outer circumference and the inner circumference are connected in series.

In the second embodiment of the present invention, the part of the common electrode 231 and the scan electrode 232 surrounding the discharge space has a ring structure, and the ring has a circular shape of an outer circumference and an inner circumference, but the present invention is not limited thereto. Do not. That is, according to the present invention, the part of the common electrode and the scan electrode surrounding the discharge space may be configured in the shape of a ladder shape, a rectangular ring shape, a ring in which the shape of the outer circumference and the inner circumference is an ellipse.

Also in the second embodiment, since the sustain electrode pair 230 as the discharge electrode is embedded in the partition wall 220, the common electrode 231 and the scan electrode 232 constituting the sustain electrode pair 230 are transparent electrodes. It does not need to be, and can be formed of a metal material having excellent conductivity and low resistance such as Ag, Al, or Cu. As a result, the response speed according to the discharge is fast, the signal is not distorted, and the power consumption required for the sustain discharge can be reduced.

The scan electrode 232 is spaced apart from the common electrode 231 and is formed to cross the extending direction of the common electrode 231.

In the second embodiment of the present invention, since the common electrodes 231 extend in one direction, and the scan electrodes 232 are formed to cross the common electrodes 231, the address electrodes are also performed. It has a different configuration from the first embodiment of the present invention, which is provided with 140 separately.

In the second embodiment of the present invention, since the scan electrodes 232 are formed to intersect the common electrodes 231 and perform addressing, the present invention has been limited to not requiring an address electrode. It is not limited. That is, the present invention can extend the scan electrode and the common electrode in one direction, and arrange the address electrode surrounding the discharge cell in the partition wall so as to cross the extending direction of the scan electrode and the common electrode, as in the first embodiment. The electrode may be formed in a stripe shape and then embedded in a dielectric layer formed on the substrate.

On the other hand, the partition wall protective layer 290 is formed on the side of the partition wall 220, since the partition wall protection layer 290 is made of magnesium oxide (MgO), the partition wall 220 by the sputtering (sputtering) of the plasma particles, The common electrode 231 and the scan electrode 232 are prevented from being damaged, and secondary electrons are emitted to lower the discharge voltage.

The phosphor layer 280 is formed by being applied to the etching portion 211b formed on the first substrate 211, and the etching portion 211b is positioned on the upper surface of the discharge cell 260.

The phosphor layer 280 of the second embodiment is applied to the etching portion 211b formed on the first substrate 211. However, the present invention is not limited to this. That is, the position where the phosphor layer of the present invention is disposed is not limited to the above, but may be disposed at various positions in the discharge cell.

The phosphor layer 280 has a component that generates ultraviolet light by receiving ultraviolet rays. The red phosphor layer formed in the red light emitting cell includes phosphors such as Y (V, P) O ₄ : Eu, and the green light emitting cell The green phosphor layer formed at includes a phosphor such as Zn ₂ SiO ₄ : Mn, and the blue phosphor layer formed at the blue light emitting discharge cell includes a phosphor such as BAM: Eu.

The discharge cell 260 defined by the first substrate 211, the second substrate 212, and the partition wall 220 is filled with discharge gas such as Ne, Xe, and the like, and a mixed gas thereof.

On the other hand, as described above, the sustain electrode pair 230 as the discharge electrode is composed of a common electrode 231 and a scan electrode 232, the common electrode 231 and the scan electrode 232 is a signal transmission means 250 In order to facilitate the connection with each driving circuit board (not shown) by using a cross-symmetry, but the structure is the same, the following, typically, the electrode terminal portion connecting structure around the common electrode 231 Take a look.

The common electrode 231 includes a discharge part 231a and a connection part 231b. The discharge part 231a is disposed in the partition wall 220 to perform discharge, and the connection part 231b is disposed at the end of the discharge part 231a and disposed outside the partition wall 220.

In this case, it is preferable that the height of the intermediate electrode 238 has a height sufficient to overcome the height difference between the terminal portion 236 and the connection portion 231b. In one embodiment, the height of the intermediate electrode 238 is preferably larger than the height from the substrate on which the terminal portion is formed to the discharge electrode.

Meanwhile, the terminal portion 236 is formed on the second substrate 212, and the intermediate electrode 238 electrically connects the connection portion 231b and the terminal portion 236. The intermediate electrode 138 is made of a conductive material, and may include a metal material having excellent conductivity and low resistance, such as Ag, Al, or Cu, which is the same as the material of the discharge electrode.

The signal transmitting means 250 is electrically connected to one end of the terminal portion 236 that is not in contact with the intermediate electrode 238. The signal transmitting means 250 of the second embodiment of the present invention is the first of the surfaces constituting the terminal portion 236. The second substrate 212 is in contact with the surface located in the direction opposite to the direction.

The signal transmitting means 250 may be a flexible printed cable (FPC) or a tape carrier package (TCP), in which case the individual conductors forming the flexible printed cable or tape carrier package The terminal portions 236 are respectively installed in one-to-one correspondence.

In this case, the connection between each conductive line of the signal transmission means 250 and the terminal portion 236 may be made by an anisotropic conductive film.

Since the structure of the common electrode 231 described above has a symmetrical structure with the scan electrode 232 as described above, the connection structure of the electrode terminal portion of the scan electrode 232 also includes a medium electrode 238, and the like. Corresponding to the electrode terminal connection structure of 231 has the same structure.

That is, although not shown in FIG. 5, the arrangement structure of the partition wall 220, the connection portion 231b of the common electrode 231, the terminal portion 236, the intermediate electrode 238, and the signal transmission means 250 may be described in detail. The edges on the opposite side of the 200 are similarly formed symmetrically.

In addition, although the second embodiment is configured not to include an address electrode separately as described above, if an address electrode is additionally disposed in the partition wall, the terminal portion structure of the address electrode is the same as that of the common electrode 231. And an intermediate electrode.

Next, the operation of the plasma display panel 200 having the electrode terminal connection structure of the second embodiment will be described.

First, the partition wall 220, the sustain electrode pair 230, the terminal portion 236, and the intermediate electrode 238 of the plasma display panel 200 are installed in the above-described second embodiment. Then, the individual wires constituting the signal transmission means 250 are electrically connected to the terminal portion 236.

After the assembly of the plasma display panel 200 and the injection of the discharge gas are completed, when a predetermined address voltage is applied between the common electrode 213 and the scan electrode 232 from an external power source, address discharge occurs. As a result of the discharge, the discharge cells 260 in which sustain discharge is to be generated are selected.

Thereafter, when the discharge sustain voltage is applied between the common electrode 231 and the scan electrode 232 of the selected discharge cell 260 via the signal transfer means 250, the common electrode 231 and the scan electrode 232 are applied. The discharge of the wall charges accumulated in) causes a sustain discharge, and the ultraviolet rays are emitted as the energy level of the discharged gas excited during the sustain discharge decreases.

The ultraviolet rays excite the phosphor 280 coated in the discharge cell 260, and the visible light is emitted as the energy level of the excited phosphor 280 is lowered, and the emitted visible light is emitted to the first substrate 211. Projecting the projected image forms an image that can be recognized by the user.

The electrode terminal connection structure according to the second embodiment of the present invention, which is configured as described above, not only can quickly connect the discharge electrodes such as the common electrode 231 and the scan electrode 232, and the terminal portion 236, but also the circuit of the terminal portion. Defects can be prevented.

According to the present invention, the intermediate electrode having a sufficient height is disposed between the discharge electrode and the terminal portion, and the discharge electrode and the terminal portion can be electrically connected by the intermediate electrode, thereby facilitating the connection between the discharge electrode and the terminal portion. . Therefore, it is possible to solve the problem that the connection part of the discharge electrode is broken during the interconnection due to the height difference between the discharge electrode and the terminal part.

The present invention is particularly useful for plasma display panels by plasma discharge. However, the present invention is not limited thereto and may be applied to various display panels including a plasma display panel.

According to the display panel of the present invention, by connecting the discharge electrode formed on the barrier layer and the terminal portion formed on the substrate through the intermediate electrode, it is possible to facilitate the electrical connection between the discharge electrode having a different layer and the substrate.

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 (30)

A pair of substrates disposed to face each other apart from each other; Barrier ribs disposed between the pair of substrates to partition a plurality of discharge cells; Discharge electrodes disposed on the partition wall to surround at least a portion of the discharge cell; A terminal unit disposed on opposite surfaces of at least one of the substrates and electrically connected to the outside; And  A intermediate electrode positioned between the terminal portion and the discharge electrode to electrically connect the terminal portion to the discharge electrode; Each of the discharge electrodes includes a first discharge electrode and a second discharge electrode disposed spaced apart from each other in a substrate direction toward one substrate, and And the intermediate electrode connects at least one of the first discharge electrode and the second discharge electrode to the terminal unit. The method of claim 1, And the substrates include a first region in which the barrier rib is disposed and a second region in which the barrier rib is not disposed. The method of claim 2, And the terminal portion is positioned in the second region of the substrate. The method of claim 2, And a discharge part in which the discharge electrode is positioned in the partition wall and a connection part extending from the partition wall to the second region. The method of claim 4, wherein And a display panel, wherein the intermediate electrode connects the connection portion to the terminal portion. The method of claim 2, And the intermediate electrode is positioned in a second area on a surface on which the terminal portion of the substrate is formed. The method of claim 1, The display panel of claim 1, wherein the discharge cell has a circular or elliptical shape. The method of claim 1, And a phosphor layer having grooves formed on a surface facing the discharge cells of at least one of the substrates, and wherein phosphors are coated on the grooves. The method of claim 1, And a display panel, wherein the discharge electrodes are disposed in the partition wall. delete The method of claim 1, A display panel in which the first discharge electrode and the second discharge electrode extend in different directions. The method of claim 1, A display panel in which the first discharge electrode and the second discharge electrode extend in the same direction. The method of claim 12, Further comprising address electrodes spaced apart from each other in the substrate direction with respect to the discharge electrodes and extending in a direction different from the discharge electrodes; And a display panel surrounding at least a portion of each discharge cell disposed along a direction in which the address electrodes extend. The method of claim 12, And a plurality of address electrodes extending in a direction different from the discharge electrodes on one of the substrates. The method of claim 14, And a dielectric layer including a dielectric material to cover the address electrode on one of the substrates. delete The method of claim 1, And a height of the intermediate electrode is greater than a height from the substrate on which the terminal portion is formed to the discharge electrode. A first substrate and a second substrate spaced apart from each other to face each other; A partition wall disposed between the first substrate and the second substrate to partition a plurality of discharge cells; Discharge electrodes disposed on the partition wall; A terminal portion formed on a surface of the second substrate that faces the first substrate and electrically connected to the outside; And  A intermediate electrode positioned between the terminal portion and the discharge electrode to electrically connect the terminal portion to the discharge electrode; The partition panel includes a first partition wall disposed on the first substrate side, and a second partition wall disposed in close contact with the second substrate side with respect to the first partition wall. The method of claim 18, And the second substrate includes a first region in which the barrier rib is disposed and a second region in which the barrier rib is not disposed. The method of claim 19, And a terminal portion located in a second area on the second substrate. The method of claim 19, And a discharge part in which the discharge electrode is positioned in the partition wall and a connection part extending from the partition wall to the second region. The method of claim 21, And a display panel, wherein the intermediate electrode connects the connection portion to the terminal portion. The method of claim 19, And the intermediate electrode is positioned in a second area on the second substrate. The method of claim 18, And a substrate protective layer covering at least a portion of a surface of the first substrate. The method of claim 18, And a partition protection layer covering at least a portion of a side surface of the partition. delete The method of claim 21, The discharge unit is disposed in the first partition wall. The method of claim 21, The discharge unit is arranged to surround the discharge cell. The method of claim 18, And the discharge electrode is at least one of a scan electrode, a common electrode, and an address electrode. The method of claim 18, And a height of the intermediate electrode is greater than a height from the second substrate to the discharge electrode.

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