KR20100022253A - Plasma display panel - Google Patents

Abstract

The present invention relates to a plasma display panel capable of increasing the reliability of the electrical connection between the electrode of the discharge sheet having a micro discharge structure and the electrode terminal portion on the substrate. The plasma display panel according to the present invention comprises an oxide film in which a portion of a metal plate is anodized, a plurality of dielectric layer through holes formed in the oxide film, and a discharge including a metal plate and a first electrode layer and a second electrode layer having an oxide film and having a multilayer structure. A first substrate and a second substrate disposed to face each other with the sheet, the discharge sheet interposed therebetween, an electrode terminal portion provided on one surface of the first substrate so as to extend inwardly from an edge of the first substrate, and exposed to one surface of the discharge sheet And a support portion provided between the second surface facing the one surface of the discharge sheet and the second substrate so as to support the contact between the first electrode layer and the electrode terminal portion.

Description

Plasma display panel {Plasma display panel}

The present invention relates to a plasma display panel, and more particularly, to a plasma display panel capable of increasing the reliability of the electrical connection between the electrode of the discharge sheet having a micro discharge structure and the electrode terminal portion on the substrate.

In general, a plasma display panel is manufactured by forming a partition wall and a driving electrode between two substrates facing each other, and overlapping a predetermined interval to inject a discharge gas thereinto and sealing the same. The plasma display device is a type of flat panel display device and includes a driving circuit connected to each electrode of the plasma display panel to supply a driving signal and other elements necessary for implementing a screen.

In the plasma display panel, many pixels are regularly arranged in a matrix form. The plasma display panel may be classified into a direct current type, an alternating current type, and a mixed type thereof according to a voltage signal driving a pixel electrode, and may be classified into a counter discharge type and a surface discharge type according to an arrangement of two electrodes to which a discharge voltage is applied. .

Currently, most plasma display panels produced at home and abroad are three-electrode surface discharge plasma display panels. However, in order to solve various problems such as deterioration of phosphors, lower visible light transmittance, and lower luminous efficiency, which have been considered inevitable in the three-electrode surface discharge type structure, studies on the plasma display panel having a new structure have been actively conducted.

One of the new structures of plasma display panels is to use micro discharge (MD) as a surface light emitting source. Micro discharging is also called microhollow cathode discharge (MHCD).

By using the micro discharge, stable plasma discharge can be generated, and a form similar to the passive matrix plasma display panel can be obtained. In view of this, an attempt may be made to fabricate a plasma display device having various structures using a micro discharge structure.

An object of the present invention is to provide a plasma display panel capable of increasing the reliability of the electrical connection between the electrode of the discharge sheet having a micro discharge structure and the electrode terminal portion provided on the substrate.

According to an aspect of the present invention to achieve the above technical problem, a first portion of the metal plate is composed of an anodized oxide film, a plurality of dielectric layer through holes formed in the oxide film, and a metal plate, the oxide film is provided and has a multilayer structure A discharge sheet including an electrode layer and a second electrode layer; A first substrate and a second substrate disposed to face each other with the discharge sheet therebetween; An electrode terminal unit disposed on one surface of the first substrate to extend inwardly from an edge of the first substrate; And a support portion provided between the second surface facing the one surface of the discharge sheet and the second substrate so as to support contact between the first electrode layer exposed on one surface of the discharge sheet and the electrode terminal portion.

Preferably, the support may be a separate structure. The support part may include a plurality of blocks or one block divided to support contact between the plurality of first electrodes included in the first electrode layer and each electrode terminal part in contact with each first electrode. The support consisting of one block may have a stripe shape, an L-shape or a square ring shape. The support may be made of an insulator. The support may be made of a polymeric material or a ceramic material.

The first electrode layer includes a plurality of first electrodes, each first electrode extending in a first direction, and a plurality of circular first individual electrodes surrounding the plurality of dielectric layer holes on one surface side of the discharge sheet; It may be provided with a first connection portion for connecting one individual electrode. The second electrode layer includes a plurality of second electrodes, each second electrode extending in a first direction, and a plurality of circular second individual electrodes surrounding the plurality of dielectric layer holes on the other surface side of the discharge sheet; A second connection unit may be provided to connect the second individual electrodes.

In this case, the plasma display panel includes: a third electrode layer having a plurality of third electrodes extending in a second direction having a predetermined angle with the first direction on the first substrate; And an insulating layer provided between the third electrode layer and the discharge sheet. In addition, phosphors may be further provided on the insulating layer in each dielectric through hole. In addition, the electrode terminal part may be covered by the insulating layer, one end of the electrode terminal part may be exposed to the surface of the insulating layer, and the other end of the electrode terminal part may be exposed to the outside of the panel.

In addition, the plasma display panel may further include a partition wall provided to have a space corresponding to the plurality of dielectric layer holes between the insulating layer and the discharge sheet. In this case, the phosphor may be installed in a space formed by the partition wall. One end of the electrode terminal portion may extend to the side or the top of the partition wall, and the other end of the electrode terminal portion may be exposed to the outside of the panel.

The first electrode layer includes a plurality of first electrodes, each first electrode extending in a first direction, and a plurality of circular first individual electrodes surrounding the plurality of dielectric layer holes on one surface side of the discharge sheet; It may be provided with a first connection portion for connecting one individual electrode. The second electrode layer includes a plurality of second electrodes, each second electrode extending in a second direction having a predetermined angle with the first direction, and a plurality of circular shapes surrounding the plurality of dielectric layer holes on the other side of the discharge sheet. Second individual electrodes and a second connection part connecting the second individual electrodes. The second connection portion may be made of a conductive material different from the metal plate forming the second individual electrodes.

In addition, the plasma display panel according to the present embodiment includes: a second electrode terminal portion provided on one surface of the second substrate so as to extend inwardly from an edge of the second substrate; And a second support part disposed between the other surface of the discharge sheet and the first substrate to support contact between the second electrode layer exposed on one surface of the discharge sheet and the second electrode terminal part.

The first substrate may have a recess formed corresponding to each dielectric through hole. In this case, the plasma display panel may include a phosphor installed in the recess.

The metal plate may include any one of gold, platinum, silver, copper, and aluminum as a main component.

The plurality of dielectric layer apertures may be arranged in a lattice or delta form.

The plasma display panel includes a sealing material for sealing peripheral portions of the first substrate and the second substrate; And a discharge gas filled in the sealed space between the first substrate and the second substrate.

According to the present invention, a stable electrical connection structure can be realized between an electrode of a discharge sheet having a micro discharge structure and an electrode terminal portion on a substrate.

In addition, it is possible to implement a simple structure and a reliable plasma display panel.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.

In the following description of the present invention, if it is determined that the detailed description of related known functions or configurations may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. It should be noted that the same elements in the drawings are represented by the same reference numerals and symbols as much as possible even though they are shown in different drawings. In addition, the thickness or size of each layer in the drawings is exaggerated for convenience and clarity of description and may differ from the actual film thickness or size.

1 is a plan view of a plasma display panel according to an embodiment of the present invention.

Referring to FIG. 1, the plasma display panel 100 according to the present exemplary embodiment includes a lower substrate 110 and an upper substrate 140 disposed opposite to each other, and an insulating layer disposed on one surface of the lower substrate 110 (114 of FIG. 2). And the electrode terminal portion 116 and the lower electrode layer (see 126 in FIG. 2) provided on one surface thereof are disposed between the lower substrate 110 and the upper substrate 140 so as to contact the electrode terminal portion 116. The discharge sheet 120 and the discharge sheet 120 are disposed between the discharge sheet 120 and the upper substrate 140, and the discharge sheet 120 when the lower substrate 110 and the upper substrate 140 are bonded by the sealing material 150. Support portions 130a and 130b for physically pressing the contact between the lower electrode layer 126 and the electrode terminal portion 116.

Hereinafter, the lower substrate 110 and the upper substrate 140 may be referred to as a first substrate and a second substrate, respectively. In addition, the lower electrode layer 126 may be referred to as a first electrode layer, and the upper electrode layer 124 may be referred to as a second electrode layer.

The lower substrate 110 and the upper substrate 140 may be implemented with at least one transparent glass substrate. In the state where the discharge sheet 120 and the support portions 130a and 130b are disposed between the lower substrate 110 and the upper substrate 140, the peripheral portions of the lower substrate 110 and the upper substrate 140 spaced apart by a predetermined distance from each other. It is sealed by the sealing material 150. A discharge gas may be filled in the sealed space between the lower substrate 110 and the upper substrate 140.

The discharge sheet 120 functions as a plasma light source of the plasma display panel 100 and has a micro discharge structure. The discharge sheet 120 is an oxide film formed by anodizing the inside and the surface of the metal plate so that the upper electrode layer 124 and the lower electrode layer 126 having the same pattern are formed on both surfaces of the metal plate. Here, the oxide film functions as a dielectric layer 122 between the upper electrode layer 124 and the lower electrode layer 126, and a dielectric layer through hole 123 penetrating the discharge sheet 120 in a thickness direction is formed in a portion of the oxide film. The dielectric layer through hole 123 described later functions as a discharge space.

FIG. 2 is a cross-sectional view of the plasma display panel of the present invention corresponding to the cut plane by the line II ′ of FIG. 1.

The main manufacturing process of the plasma display panel 100 of this embodiment will be briefly described with reference to FIG. 2 as follows.

First, the discharge sheet 120 is placed on the lower substrate 110. At this time, one end of the lower electrode layer 126 of the discharge sheet 120 is aligned to contact the electrode terminal portion 116 provided on the lower substrate 110. Next, the upper substrate 140 is covered on the discharge sheet 120, and the peripheral portions of the lower substrate 110 and the upper substrate 140 are sealed with the sealing material 150. As the sealant 150, a substrate bonding frit may be used. At this time, one end of the electrode terminal portion 116 is connected to the lower electrode layer 126, and the other end of the electrode terminal portion 116 is drawn out to the outside of the panel for connection with a driving circuit that applies a driving signal to the lower electrode layer 126. do. Next, the air in the space between the lower substrate 110 and the upper substrate 140 is discharged through a predetermined exhaust port, and the discharge gas is introduced at an appropriate pressure. And seal the exhaust vent.

However, in the aforementioned panel bonding process, the electrical connection between the lower electrode layer 126 and the electrode terminal portion 116 of the discharge sheet 120 may be poor. The reason is that when the flat sheet discharge sheet 120 is pressed at a constant pressure between the pair of substrates 110 and 140, the pressure applied to the front surface of the discharge sheet 120 has a predetermined difference depending on the position. Because. More specifically, since the manufacturing process of the plasma display panel is performed at a high temperature of 500 ° C. or more, the glass substrate or the discharge sheet 120 may be bent during the process. Such warping includes warping in the thickness direction. Therefore, the electrical connection between the electrode terminal portion 116 on the lower substrate 110 and the lower electrode layer 126 of the discharge sheet 120 may be poor. Such poor electrical connection may be more prominent when the discharge sheet 120 is separately prepared and installed on the lower substrate 110.

The above-mentioned electrical connection failure area corresponds to a specific part of which the conductive area capable of transmitting an electric signal is reduced, thereby preventing smooth transmission of the signal when the driving voltage is applied or generating more heat than other electrode parts. The deterioration of can proceed more quickly than the deterioration of the electrodes of other parts and can be easily broken. In addition, undesired excess heat can adversely affect the dielectric layer 122 around it.

In this embodiment, in order to prevent the occurrence of the aforementioned electrical connection failure, the lower electrode layer before covering the upper substrate 140 on the discharge sheet 120 and sealing the peripheral portion of the lower substrate 110 and the upper substrate 140. And providing support portions 130a and 130b between the discharge sheet 120 and the upper substrate 140 so as to press the contact between the electrode 126 and the electrode terminal portion 116. The support portions 130a and 130b are installed to correspond to the electrical connection portions of the electrode terminal portion 116 and the lower electrode layer 126.

In the present exemplary embodiment, the support part may include a first support part for supporting contact between the first terminal electrode terminal part 116 formed at the right edge of the lower substrate 110 and the right end part of the lower electrode layer 126 of the discharge sheet 120 ( 130a) and a second support portion 130b supporting contact between the second terminal electrode terminal portion 116 formed at the left edge of the lower substrate 110 and the left end portion of the lower electrode layer 126 of the discharge sheet 120. It includes. The support portions 130a and 130b have insulation to prevent a short circuit between the plurality of electrodes of the upper electrode layer 124.

In addition, at least one of the lower electrode layer 126 and the electrode terminal part 116 may be supported by the support parts 130a and 130b when the lower substrate 110 and the upper substrate 140 are pressed at a predetermined pressure in a direction in which the lower substrate 110 and the upper substrate 140 face each other. Either one can act to be pressed against each other while pressed by its own ductility.

In addition, the support parts 130a and 130b may be formed of the same material as the material forming the lower electrode layer 126 or the electrode terminal part 116 or a harder material. For example, the material of the support parts 130a and 130b may include a lower electrode layer 126 made of a material suitable for anodization, such as aluminum, and an electrode terminal part made of a metal material having excellent conductivity such as gold, platinum, silver, copper, and aluminum. 116 may be taken into consideration. In addition, the support parts 130a and 130b may be made of a material that does not chemically and physically denature in a high temperature atmosphere of about 500 ° C. or more during the sealing process. For example, a sheet-like polymer material or a ceramic material may be used as the material of the support parts 130a and 130b.

The above-described support parts 130a and 130b have a stripe shape having a predetermined thickness. In addition to the stripe shape, the support part of the present embodiment may be implemented as one block having a rectangular ring shape, as shown by reference numeral 130 of FIG. 7A. In this case, the support part may simultaneously support the contact between the plurality of electrode terminal parts 116 provided on one side of the lower substrate 110 and each electrode of the lower electrode layer 126 connected thereto, and the installation is easy. There is this.

Of course, when the electrode terminal portion 116 is installed only on one side of the upper substrate 140, the support 130b installed on the other side of the upper substrate 140 may be a dummy support portion.

By using the above-described support parts 130a and 130b, it is possible to easily secure stable electrical connection between the electrode layer 126 provided on the discharge sheet 120 and the electrode terminal part 116 provided on the lower substrate 110.

3 is a cross-sectional view of a plasma display panel according to an embodiment of the present invention. 3 corresponds to the section cut by the II-II 'line in FIG.

Referring to FIG. 3, the plasma display panel 100 according to the present exemplary embodiment includes a third electrode layer 112 having a predetermined pattern on the lower substrate 110 and an insulating layer 114 covering the third electrode layer 112. And the partition wall 118 provided in a predetermined pattern on the insulating layer 114 in a predetermined pattern, and the predetermined space 119 of the partition wall 118 and the dielectric through hole 123 are correspondingly positioned on the partition wall 118. The insulating layer 114 in the discharge sheet 120 disposed on the support sheet, the support portions 130a and 130b disposed between the discharge sheet 120 and the upper substrate 140, and the predetermined space 119 of the partition wall 118. And a phosphor 160 disposed on the partition wall 118.

The third electrode layer 112 may include a plurality of third electrodes extending in a second direction having a predetermined angle with a first direction in which the first electrode layer 126 and the second electrode layer 124 of the discharge sheet 120 extend. Equipped with. Each third electrode of the third electrode layer 112 extends facing the group of predetermined spaces 119 formed by the partition wall 118 or the group of dielectric layer through holes 123 arranged in the second direction. Each third electrode of the third electrode layer 112 may be referred to as an address electrode.

In the present embodiment, the upper electrode layer 124 and the lower electrode layer 126 of the discharge sheet 120 have substantially the same pattern. Each second electrode of the upper electrode layer 124 and the corresponding first electrode of the lower electrode layer 126 function as a pair of sustain electrodes, and together with each third electrode of the third electrode layer 112, plasma A three-electrode surface discharge structure of the display panel is formed.

The electrode terminal portion 116 of the present embodiment is formed on the insulating layer 114, and as indicated by reference numeral 116a, the side of the lower substrate 110 rides on the side of the outermost partition wall 118a adjacent to the electrode terminal portion 116. In the discharge sheet 120 may be extended. In addition, the electrode terminal unit 116 may extend to cover at least a portion of an upper portion of the outermost partition wall 118a facing the discharge sheet 120. The outermost partition 118a may be a dummy partition. In this case, the electrical connection area of the electrode terminal portion 116 in contact with the lower electrode layer 126 of the discharge sheet 120 can be more secured.

The support part 130a is disposed between one surface of the discharge sheet 120 on which the upper electrode layer 124 is formed and the upper substrate 140, and the lower substrate 110 and the upper substrate 140 during the sealing process of the panel. The pressure applied by the first and second electrodes 116 is provided on the lower substrate 110 and acts to ensure that the physical contact between the lower electrode layer 126 of the discharge sheet 120.

Support 130a is preferably implemented as a separate structure, the thickness may be about 10㎛ to about 30㎛. Here, the thickness of the support 130a is limited to about 30 μm or less in consideration of the maximum distance h between the discharge sheet 120 and the upper substrate 140. The thickness of the support 130a is limited to about 10 μm or more in consideration of the minimum thickness of the support for physically pressing the contact between the electrode terminal 116 and the lower electrode layer 126 of the discharge sheet 120.

The discharge sheet 120 of the present embodiment will be described in more detail as follows.

The discharge sheet 120 is anodized a portion of the metal plate such that the upper electrode layer 124 and the lower electrode layer 126 in a predetermined pattern are formed on both surfaces of the metal plate. The anodized oxide film becomes the dielectric layer 122 and is formed between them so that the upper electrode layer 124 and the lower electrode layer 126 are electrically separated from each other.

Referring again to FIG. 1, the discharge sheet 120 includes a dielectric layer 122, a top electrode layer 124 formed of a group of second electrodes having a predetermined pattern, and a group of patterns having the same pattern as the top electrode layer 124. The lower electrode layer 126 is formed of first electrodes. The dielectric layer through hole 123 penetrating through the dielectric layer 122 is formed in many places of the discharge sheet 120. The discharge sheet 120 forms a flat plate except for a portion where the dielectric layer through hole 123 is formed, and is integrally formed with the dielectric layer 123. Since the group of the second electrode of the upper electrode layer 124 and the group of the first electrode of the lower electrode layer 126 have substantially the same pattern and structure, in the following description of the present embodiment, the structure of the lower electrode layer 126 or The structure of the first electrode is replaced with the description of the structure of the upper electrode layer 124 or the structure of the second electrode.

Each second electrode of the upper electrode layer 124 includes a plurality of individual electrodes 124a in a circular shape surrounding the dielectric layer through hole 123 and a connecting portion 124b connecting the individual electrodes 124a. The plurality of individual electrodes 124a and the connecting portion 124b are arranged in one direction. That is, each second electrode extends in the first direction. The plurality of individual electrodes 124a may have a structure arranged in a lattice form. Of course, the dielectric through holes 123 and the individual electrodes 124a may be arranged in a delta structure, which is one of the pixel array structures of the display field.

When a certain voltage is applied to the upper electrode layer 124 and the lower electrode layer 126 of the discharge sheet 120, a kind of surface discharge occurs between the two electrodes in the dielectric layer through hole 123. In this case, if the size of the dielectric layer through hole 123 is appropriately formed, stable plasma discharge may be achieved.

The discharge sheet 120 described above forms the upper electrode layer 124 and the lower electrode layer 126 on both sides of a single base metal plate such as aluminum by adjusting the process conditions of the anodization technique, while forming the upper electrode layer 124 and the lower electrode layer 126. Can be produced by forming an oxide film between the layers. Since such anodization technology will be apparent to those skilled in the art, a detailed description thereof will be omitted.

Next, a brief description of the operation of the plasma display panel of the present embodiment.

First, each third electrode of the third electrode layer 112 is connected to each terminal of the address driving driver as an address electrode, and each first electrode of the lower electrode layer 216 is connected to each terminal of the scan driving driver as a scan electrode. Each second electrode of the upper electrode layer 214 may be connected to each terminal of the sustain driving driver as a sustain electrode. In this case, when a negative voltage is applied to the first scan electrode located at the top of the second electrodes of FIG. 1, a constant voltage is applied to the first address electrode and the third address electrode located on the leftmost side, and a dischargeable potential difference is generated. An address discharge occurs in the first and third dielectric apertures of the first row of the arranged dielectric apertures 123.

Thereafter, when voltages are sequentially applied to the second scan electrode and the third scan electrode, and voltages are applied according to portions to be displayed on each address electrode, address discharge is performed in the entire dielectric through holes.

After the addressing is completed, a constant voltage is applied to the sustain electrodes in a predetermined period, and a constant voltage is applied to the scan electrodes in a predetermined period. The application of this constant voltage is repeated as necessary to allow display discharge to represent one subfield of one frame in the dielectric aperture. Gray scale display using frames and subfields is well known to those skilled in the art of plasma display technology, and thus detailed descriptions thereof are omitted.

4 is a cross-sectional view of a plasma display panel according to another embodiment of the present invention. 4 may correspond to a cross section cut by line II-II ′ of FIG. 1.

Referring to FIG. 4, the plasma display panel 100a according to the present exemplary embodiment includes a third electrode layer 112 having a predetermined pattern on the lower substrate 110 and an insulating layer 114 covering the third electrode layer 112. And the discharge sheet 120 disposed on the insulating layer 114, the support parts 130a and 130b disposed between the discharge sheet 120 and the upper substrate 140, and the dielectric layer through hole of the discharge sheet 120 ( The phosphor 160 is disposed on the insulating layer 114 in the 123.

The electrode terminal portion 116a of the present embodiment is partially covered by the insulating layer 114 and exposed on the lower substrate 110 through the portion 116b extending through the hole of the insulating layer 114. The exposed electrode terminal part 116 is electrically connected to the lower electrode layer 126 of the discharge sheet 120 so that an external signal can be applied to the lower electrode layer 126.

The plasma display panel 100a according to the present embodiment has the advantages of excellent stability of the above-described electrical connection as well as the discharge sheet 120 is disposed directly on the insulating layer 114 on the lower substrate 110 without the partition wall. The structure has a simple advantage over the panel structure described.

5 is a plan view of a plasma display panel according to another embodiment of the present invention. 6A is a cross-sectional view taken along line III-III 'of FIG. 5, and FIG. 6B is a cross-sectional view taken along line IV-IV ′ of FIG. 5.

5, 6A, and 6B, the plasma display panel 100b according to the present embodiment includes a lower substrate 110b and an upper substrate 140 that are disposed to face each other, and are disposed on one surface of the lower substrate 110b. The first electrode terminal portion 116, the second electrode terminal portion 116d provided on one surface of the upper substrate 140, the discharge sheet 120b disposed between the lower substrate 110b and the upper substrate 140; , A first support 130a, and a second support 130c including a plurality of blocks.

Here, the first support part 130a is disposed between the discharge sheet 120 and the upper substrate 140, and the discharge sheet 120b is formed by the lower substrate 110 and the upper substrate 140 during the panel sealing process. When pressed, the contact between the lower electrode layer 126 of the discharge sheet 120b and the first electrode terminal portion 116 is physically pressed. The second support part 130c is disposed between the discharge sheet 120b and the lower substrate 110b, and the discharge sheet 120b is pressed by the lower substrate 110b and the upper substrate 140 during the panel sealing process. , The contact between the second electrode terminal portion 116d and the upper electrode layer 124 of the discharge sheet 120b is physically pressed.

The first support 130a collectively supports electrical connections of each first electrode terminal 116 and each first electrode of the lower electrode layer 126 in a block shape having a predetermined thickness. The second support part 130c independently supports electrical connections of each second electrode terminal part 116d and each first electrode of the upper electrode layer 125 in small blocks having a predetermined thickness.

In this embodiment, the first support part and the second support part are provided independently. However, the first support and the second support may be implemented as a single block having a rectangular ring shape as shown by reference numeral 130 of FIG. 7A, or as a single block having an L shape as shown by reference numeral 130 ′ of FIG. 7B. Do. In addition, in order to compensate for the pressure difference between a portion of the substrate and the discharge sheet by providing the support part of the present embodiment, as shown by reference numeral 130a 'of FIG. 5, the dummy support part is parallel to the first support part 130a. Can be installed.

The first electrode terminal portion 116 is installed on one surface of the lower substrate 110b to extend inwardly from the edge of the lower substrate 110b. The second electrode terminal portion 116d is installed on one surface of the upper substrate 140 to extend inwardly from the edge of the upper substrate 140. At this time, one end of the first electrode terminal portion 116 and one end of the second electrode terminal portion 116d are drawn outside the panel for connection with an external driving circuit.

The upper electrode layer 125 of the discharge sheet 120b includes a group of second electrodes extending in the second direction. Each second electrode has a plurality of circular individual electrodes 125a surrounding the series of dielectric layer apertures 123b and a connection 125b connecting the individual electrodes 125a. In the present embodiment, the connecting portion 125b may be formed integrally with the individual electrodes 125a through an anodization process. However, as an example of a deformable aspect, the connection sheet 125b may include a discharge sheet to connect the group of individual electrodes 125a. 120b) is shown as a structure formed in a separate layer. In this case, the connecting portion 125b may be formed of the same material as the metal plate constituting the discharge sheet 120b or may be formed of another conductive material.

The lower electrode layer 126 of the discharge sheet 120b includes a group of first electrodes extending in a first direction perpendicular to the second direction. Since each first electrode is the same as the structure of the electrode layer described above with reference to FIGS. 1 to 3, a detailed description thereof will be omitted.

The discharge sheet 120b described above is manufactured by stacking a first sheet formed of the lower metal layer 126 and the first insulating layer 122a, and a second sheet formed of the upper metal layer 125 and the second insulating layer 122b. Can be. More specifically, first, a portion of the surface of the first metal plate having a plurality of holes in the form of a lattice is anodized to form an oxide film and a lower metal layer 126 having a predetermined pattern. Here, the oxide film of the first metal plate becomes the first insulating layer 122a, and the non-anodized portion of the first metal plate becomes the lower metal layer 126. A portion of the surface of the second metal plate having a plurality of holes in the form of a lattice is anodized to form an oxide film and an upper metal layer 125 having a predetermined pattern. Here, the oxide film of the second metal plate becomes the second insulating layer 122b, and the non-anodized portion of the second metal plate becomes the upper metal layer 125. Then, when the anodized first metal plate and the anodized second metal plate are properly stacked, the discharge sheet 120b having the upper metal layer 125, the lower metal layer 126, and the dielectric layer through hole 123b provided on both surfaces thereof is formed. It can manufacture.

In addition, in the present exemplary embodiment, the phosphor 160b is provided in the trench or recess 111 formed in a predetermined pattern on one surface of the lower substrate 110b. The phosphor may be installed on one surface of the upper substrate 140 facing the dielectric layer through hole 123b. In this case, it is preferable that the phosphor provided on the upper substrate 140 side is made of a translucent phosphor.

The operation of the plasma display panel according to the present embodiment will be described briefly as follows.

First, each first electrode of the lower electrode layer 126 may be connected to each terminal of the scan driving driver as a scan electrode, and each second electrode of the upper electrode layer 125 may be connected to each terminal of the address driving driver as an address electrode. . In this case, a negative voltage is applied to the first scan electrode positioned at the uppermost part in the first direction in which the first electrode extends, and the first address electrode at one outermost side in the second direction orthogonal to the first direction, and the third When a constant voltage is applied to the address electrode to generate a discharging potential difference, discharge occurs in the first and third dielectric holes of the first row of the matrix apertures 123b.

Next, when voltage is sequentially applied to the second scan electrode and the third scan electrode, and voltage is applied to each address electrode according to a portion to be displayed, discharge is performed in all the dielectric through holes 123b. That is, a predetermined image can be displayed depending on whether each dielectric through hole is discharged and the afterimage effect.

According to the embodiments described above, even when a predetermined warp occurs in the upper substrate, the lower substrate and the discharge sheet in an atmosphere of a high temperature and a constant pressure of about 500 ° C. or more during the process of assembling the plasma display panel, The electrical connection between the installed electrode and the electrode terminal portion on the substrate can be stably connected by the pressing of the support portion. In particular, even if the panel is enlarged, the electrical connection between the electrode of the discharge sheet and the electrode terminal part can be stably secured by the support part. Therefore, the stability and reliability of the plasma display panel can be improved.

The scope of the above-described invention is defined in the following claims, which are not bound by the description of the specification, and all modifications and variations belonging to the equivalent scope of the claims will belong to the scope of the present invention.

1 is a plan view of a plasma display panel according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of the plasma display panel of the present invention corresponding to the cut plane taken along the line II ′ of FIG. 1.

3 is a cross-sectional view of a plasma display panel according to an embodiment of the present invention.

4 is a cross-sectional view of a plasma display panel according to another embodiment of the present invention.

5 is a plan view of a plasma display panel according to another embodiment of the present invention;

6A is a cross-sectional view taken along line III-III ′ of FIG. 5.

6B is a cross-sectional view taken along line IV-IV 'of FIG. 5;

7A and 7B are perspective views for explaining a support that can be employed in the present invention.

Explanation of symbols on the main parts of the drawings

100, 100a, 100b: plasma display panel

110: lower substrate 112: third electrode layer

114: insulating layer 116, 116d: electrode terminal portion

118: partition wall 120, 120b: discharge sheet

122, 122a, 122b: dielectric layer 123, 123b: dielectric layer through

124, 125: second electrode layer 126: first electrode layer

130, 130a, 130b, 130c: support portion 140: upper substrate

150: sealing material 160, 160a, 160b: phosphor

Claims (21)

A discharge sheet including an oxide film in which a part of the metal plate is anodized, a plurality of dielectric layer holes formed in the oxide film, and a first electrode layer and a second electrode layer on which the oxide film is disposed and which has the multilayer structure; A first substrate and a second substrate disposed to face each other with the discharge sheet interposed therebetween; An electrode terminal unit provided on one surface of the first substrate to extend inwardly from an edge of the first substrate; And And a support part disposed between the second surface facing the one surface of the discharge sheet and the second substrate so as to support contact between the first electrode layer exposed on one surface of the discharge sheet and the electrode terminal part. The method of claim 1, The support portion is a plasma display panel. The method of claim 2, And the support part includes a plurality of blocks or one block divided to support contact between a plurality of first electrodes included in the first electrode layer and each electrode terminal part in contact with each first electrode. The method of claim 3, Wherein the one block has a stripe shape, an L-shape or a rectangular ring shape. The method of claim 3, And the support portion is made of an insulator. The method of claim 5, And the support portion is made of a polymer material or a ceramic material. The method of claim 1, The first electrode layer includes a plurality of first electrodes, each of the first electrodes extending in a first direction, and a plurality of circular first individual electrodes surrounding the plurality of dielectric layer holes on one surface side of the discharge sheet. And a first connection portion connecting the first individual electrodes, The second electrode layer includes a plurality of second electrodes, each of the second electrodes extending in the first direction, and a plurality of circular second individual pieces surrounding the plurality of dielectric layer through holes on the other surface side of the discharge sheet. And a second connection part connecting the electrodes and the second individual electrodes. The method of claim 7, wherein A third electrode layer on the first substrate, the third electrode layer having a plurality of third electrodes extending in a second direction having a predetermined angle with the first direction; And And an insulating layer disposed between the third electrode layer and the discharge sheet. The method of claim 8, And each third electrode is disposed to face a group of dielectric through holes arranged in the second direction. The method of claim 8, And a phosphor disposed on the insulating layer in each of the dielectric holes. The method of claim 8, The electrode terminal portion is covered by the insulating layer, one end of the electrode terminal portion is exposed to the surface of the insulating layer and the other end of the electrode terminal portion is exposed to the outside of the panel. The method of claim 8, And a partition wall disposed between the insulating layer and the discharge sheet to have a space corresponding to the plurality of dielectric layer holes. The method of claim 12, And a phosphor installed in the space formed by the partition wall. The method of claim 12, One end of the electrode terminal portion extends to the side or top of the partition wall, the other end of the electrode terminal portion is exposed to the outside of the panel. The method of claim 1, The first electrode layer includes a plurality of first electrodes, each of the first electrodes extending in a first direction, and a plurality of circular first individual electrodes surrounding the plurality of dielectric layer holes on one surface side of the discharge sheet. And a first connection portion connecting the first individual electrodes, The second electrode layer includes a plurality of second electrodes, each second electrode extends in a second direction having a predetermined angle with the first direction, and surrounds the plurality of dielectric layer holes on the other side of the discharge sheet. The plasma display panel includes a plurality of circular second individual electrodes and a second connection unit connecting the second individual electrodes. The method of claim 15, A second electrode terminal unit provided on one surface of the second substrate to extend inwardly from an edge of the second substrate; And The plasma display panel further includes a second support part disposed between the other surface of the discharge sheet and the first substrate to support contact between the second electrode layer exposed on one surface of the discharge sheet and the second electrode terminal part. . The method of claim 15, And the second connection portion is made of a conductive material different from the metal plate. The method of claim 15, The first substrate has a recess formed corresponding to each of the dielectric through holes, The panel further includes a phosphor installed in the recess. The method of claim 1, The metal plate is a plasma display panel comprising any one of gold, platinum, silver, copper, aluminum. The method of claim 1, And the plurality of dielectric layer apertures are arranged in a lattice or delta form. The method of claim 1, A sealing material for sealing peripheral portions of the first substrate and the second substrate; And And a discharge gas filled in a sealed space between the first substrate and the second substrate.

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