KR100850909B1 - Plasma Display Panel - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display panel, which omits the exhaust unit, and may simplify the manufacturing process by forming the first electrode and the second electrode formed on the front substrate as a single layer. It is possible to lower the unit cost and to stabilize the discharge, thereby improving the driving efficiency.

The plasma display panel according to the present invention has a front substrate on which first and second electrodes parallel to each other are formed, and a third electrode intersecting the first and second electrodes is formed and is disposed to face the front substrate. It includes a partition wall partitioning the discharge cell between the substrate and the front substrate and the rear substrate, the first electrode and the second electrode is formed in a single layer, the exhaust unit (Unit) is omitted in the rear substrate desirable.

Description

Plasma Display Panel

1A to 1D are diagrams for explaining an example of the structure of a plasma display panel according to one embodiment of the present invention;

2 is a view for explaining an example of the manufacturing process of the plasma display panel according to an embodiment of the present invention, the exhaust hole is omitted.

3 is a view for explaining the reason why the first electrode and the second electrode has a single layer structure in the structure in which the exhaust tip is omitted.

4 is a view for explaining an example of a structure in which a black layer is further added between the first electrode and the second electrode and the front substrate.

FIG. 5 is a view for explaining a first embodiment of a first electrode and a second electrode of a plasma display panel according to an embodiment of the present invention; FIG.

6A to 6C are diagrams for describing a second embodiment of the first electrode and the second electrode of the plasma display panel according to the embodiment of the present invention.

FIG. 7 is a view for explaining a third embodiment of the first electrode and the second electrode of the plasma display panel according to the embodiment of the present invention; FIG.

8 is a view for explaining a fourth embodiment of the first electrode and the second electrode of the plasma display panel according to the embodiment of the present invention;

FIG. 9 is a view for explaining a fifth embodiment of the first electrode and the second electrode of the plasma display panel according to the embodiment of the present invention; FIG.

FIG. 10 is a view for explaining a sixth embodiment of the first electrode and the second electrode of the plasma display panel according to the embodiment of the present invention; FIG.

11A to 11B are views for explaining a seventh embodiment of the first electrode and the second electrode of the plasma display panel according to the embodiment of the present invention.

12 is a view for explaining an eighth embodiment of the first electrode and the second electrode of the plasma display panel according to the embodiment of the present invention;

FIG. 13 is a view for explaining a ninth embodiment of the first electrode and the second electrode of the plasma display panel according to the embodiment of the present invention; FIG.

FIG. 14 is a view for explaining a tenth embodiment of the first electrode and the second electrode of the plasma display panel according to the embodiment of the present invention; FIG.

15A to 15B are views for explaining an eleventh embodiment of a first electrode and a second electrode of a plasma display panel according to an embodiment of the present invention.

FIG. 16 is a diagram for explaining a frame for implementing grayscale of an image in a plasma display panel according to one embodiment of the present invention; FIG.

17 is a view for explaining an example of the operation of the plasma display panel according to an embodiment of the present invention;

18A to 18B are diagrams for explaining another form of the rising ramp signal or the second falling ramp signal.

19 is a diagram for explaining another type of the sustain signal.

<Description of the numbers for the main parts of the drawings>

101: front substrate 102: first electrode

103: second electrode 104: upper dielectric layer

105: protective layer 111: back substrate

112: partition wall 113: third electrode

114: phosphor layer 115: lower dielectric layer

The present invention relates to a plasma display panel.

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

The driving signal is supplied to the discharge cell through the electrode.

Then, the discharge is generated by the drive signal supplied in the discharge cell. Here, when discharged by a drive signal in the discharge cell, the discharge gas filled in the discharge cell generates vacuum ultraviolet rays, and the vacuum ultraviolet light emits the phosphor formed in the discharge cell to emit visible light. Generate. The visible light displays an image on the screen of the plasma display panel.

On the other hand, in the conventional plasma display panel, there is a problem that the distribution of the discharge gas in the discharge cell is nonuniform.

This non-uniform distribution of the discharge gas causes a problem of destabilizing the discharge and raising the discharge voltage to lower the driving efficiency.

SUMMARY OF THE INVENTION In order to solve the above problems, an object of the present invention is to provide a plasma display panel having an even distribution of discharge gas in a discharge cell by improving a discharge gas injection process.

According to an embodiment of the present invention, a plasma display panel includes a front substrate on which first and second electrodes are parallel to each other, and a third electrode intersecting the first and second electrodes is formed. And a barrier rib partitioning a discharge cell between the front substrate and the rear substrate, the rear substrate disposed to face the front substrate, and the first electrode and the second electrode formed of a single layer. It is preferable that the exhaust unit is omitted.

In addition, another plasma display panel according to an embodiment of the present invention for achieving the above object is a front substrate formed with a first electrode and a second electrode parallel to each other, and a third crossing the first electrode and the second electrode; An electrode is formed and includes a rear substrate disposed opposite the front substrate and a partition wall defining a discharge cell between the front substrate and the rear substrate, wherein the first electrode and the second electrode are formed of a single layer; The back substrate has a structure without a hole, and the content of lead (Pb) is preferably 1000 parts per million (PPM) or less.

In addition, another plasma display panel according to an embodiment of the present invention for achieving the above object is a front substrate formed with a first electrode and a second electrode parallel to each other, and a third crossing the first electrode and the second electrode; An electrode is formed and includes a rear substrate disposed opposite the front substrate and a partition wall defining a discharge cell between the front substrate and the rear substrate, wherein the first electrode and the second electrode are formed of a single layer; The back substrate has a structure without a hole, the discharge cell includes a first discharge cell and a second discharge cell, a first phosphor layer is formed on the first discharge cell, and a first phosphor on the second discharge cell. It is preferable that a second phosphor layer is formed which emits light of a different color from the layer, and the pitch of the first discharge cell is different from the pitch of the second discharge cell.

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

1A to 1D are views for explaining an example of the structure of a plasma display panel according to an embodiment of the present invention.

First, referring to FIG. 1A, a plasma display panel according to an exemplary embodiment of the present invention may include a front substrate 101 on which first electrodes 102 and Y and second electrodes 103 and Z are parallel to each other. The rear substrate 111 on which the third electrodes 113 and X intersect the first electrodes 102 and Y and the second electrodes 103 and Z may be bonded to each other.

Here, the first electrode 102 (Y) and the second electrode 103 (Z) are formed in a single layer. For example, the first electrodes 102 and Y and the second electrodes 103 and Z are preferably ITO-Less electrodes.

In addition, it is preferable that at least one of the first electrode 102 and the second electrode 103 and Z be darker in color than the upper dielectric layer 104 to be described later.

In addition, an exhaust unit is omitted in the rear substrate 111. More preferably, exhaust units are omitted in the rear substrate 111 and the front substrate 101, respectively. Here, the exhaust unit may be at least one of an exhaust hole, an exhaust tip, or an exhaust pipe.

This will be described in more detail later with reference to FIG. 2.

Here, the electrode formed on the front substrate 101, preferably the first electrode (102, Y) and the second electrode (103, Z) generates a discharge in the discharge space, that is, the discharge cell (Cell) and at the same time discharge The discharge of the cell can be maintained.

The dielectric layer covers the first electrode 102 and the second electrode 103 and Z on the front substrate 101 on which the first electrode 102 and the second electrode 103 and Z are formed. Preferably, upper dielectric layer 104 may be formed.

This upper dielectric layer 104 limits the discharge current of the first electrode 102, Y and the second electrode 103, Z and between the first electrode 102, Y and the second electrode 103, Z. Can be insulated.

A protective layer 105 is formed on the top surface of the upper dielectric layer 104 to facilitate discharge conditions. The protective layer 105 may be formed through a method of depositing a material such as magnesium oxide (MgO) on the upper dielectric layer 104.

On the other hand, the electrode, preferably the third electrode (113, X) is formed on the rear substrate 111, the third electrode 113, the upper portion of the rear substrate 111 formed with such third electrode (113, X) A dielectric layer, preferably lower dielectric layer 115, may be formed to cover X).

The lower dielectric layer 115 may insulate the third electrodes 113 and X.

On top of the lower dielectric layer 115, a discharge space, that is, a partition wall 112 such as a stripe type, a well type, a delta type, and a honeycomb type for partitioning the discharge cells is formed. Can be formed. Accordingly, discharge cells such as red (R), green (G), and blue (B) may be formed between the front substrate 101 and the rear substrate 111.

In addition to the red (R), green (G), and blue (B) discharge cells, it is also possible to further form a white (W) or yellow (Yellow: Y) discharge cell.

Meanwhile, although the pitches of the red (R), green (G), and blue (B) discharge cells in the plasma display panel according to an embodiment of the present invention may be substantially the same, red (R) and green In order to match the color temperature in the (G) and blue (B) discharge cells, the pitches of the red (R), green (G) and blue (B) discharge cells may be different as shown in FIG. 1B.

In this case, the pitch may be different for each of the red (R), green (G), and blue (B) discharge cells, but the pitch of one or more discharge cells among the red (R), green (G), and blue (B) discharge cells. May be different from the pitch of other discharge cells. For example, as shown in FIG. 1B, the pitch (a) of the red (R) discharge cells is the smallest, and the pitch (b, c) of the green (G) and blue (B) discharge cells is smaller than the pitch of the red (R) discharge cells. You could make it bigger.

Here, the pitch (b) of the green (G) discharge cell may be substantially the same as or different from the pitch (c) of the blue (B) discharge cell.

In addition, the plasma display panel according to the exemplary embodiment of the present invention may have not only the structure of the partition wall 112 shown in FIG. 1A but also the structure of the partition wall having various shapes. For example, the partition wall 112 includes a first partition wall 112b and a second partition wall 112a, where the height of the first partition wall 112b and the height of the second partition wall 112a are different from each other. At least one of the first partition wall 112b or the second partition wall 112a, and a channel type partition wall structure having a channel usable as an exhaust passage, at least one of the first partition wall 112b and the second partition wall 112a. Grooved partition wall structure having a groove formed in the groove will be possible.

Here, in the case of the differential partition structure, the height h1 of the first partition 112b among the first partition 112b or the second partition 112a is the height h2 of the second partition 112a as shown in FIG. 1C. Lower than). In addition, in the case of the channel-type barrier rib structure or the groove-type barrier rib structure, it is preferable that the channel is formed in the first barrier rib 112b or the groove is formed.

On the other hand, in the plasma display panel according to an embodiment of the present invention, although the red (R), green (G), and blue (B) discharge cells are shown and described as being arranged on the same line, they may be arranged in different shapes. It will be possible. For example, a delta type arrangement in which red (R), green (G) and blue (B) discharge cells are arranged in a triangular shape may be possible. In addition, the shape of the discharge cell may also be a variety of polygonal shapes, such as pentagonal, hexagonal, as well as rectangular.

Here, it is preferable that a predetermined discharge gas is filled in the discharge cell partitioned by the partition wall 112.

In addition, a phosphor layer 114 for emitting visible light for image display may be formed in a discharge cell partitioned by the partition wall 112. For example, red (R), green (G), and blue (B) phosphor layers may be formed.

In addition to the red (R), green (G), and blue (B) phosphors, it is also possible to further form a white (W) and / or yellow (Y) phosphor layer.

In addition, the phosphor layers 114 of the red (R), green (G), and blue (B) discharge cells may have substantially the same thickness or may differ from one or more. For example, when the thickness of the phosphor layer 114 in at least one of the red (R), green (G), and blue (B) discharge cells is different from other discharge cells, it is green as shown in FIG. 1D. The thicknesses t2 and t3 of the phosphor layer 114 in the (G) or blue (B) discharge cells may be thicker than the thickness t1 of the phosphor layer 114 in the red (R) discharge cells. Here, the thickness t2 of the phosphor layer 114 in the green (G) discharge cell may be substantially the same as or different from the thickness t3 of the phosphor layer 114 in the blue (B) discharge cell.

In the above description, only one example of the plasma display panel according to an exemplary embodiment of the present invention is illustrated and described. However, the present invention is not limited to the plasma display panel having the above-described structure. For example, the description hereinabove illustrates only the case where the top dielectric layer number 104 and the bottom dielectric layer number 115 are each one layer, but one or more of these top dielectric layers and bottom dielectric layers may be a plurality of layers. It can also be layered.

In addition, a black layer (not shown) may be further formed on the upper part of the partition wall 112 to prevent reflection of the external light due to the partition wall number 112.

In addition, a black layer (not shown) may be further formed at a specific position on the front substrate 101 corresponding to the partition wall 112.

In addition, the width or thickness of the third electrode 113 formed on the rear substrate 111 may be substantially constant, but the width or thickness inside the discharge cell may be different from the width or thickness outside the discharge cell. will be. For example, the width or thickness inside the discharge cell may be wider or thicker than that outside the discharge cell.

As such, the structure of the plasma display panel according to the exemplary embodiment may be variously changed.

2 is a view for explaining an example of the manufacturing process of the plasma display panel according to an embodiment of the present invention in which the exhaust hole is omitted.

Referring to FIG. 2, the number 200 is a chamber in which the front substrate 220 and the rear substrate 230 are disposed, the number 210a is an exhaust for exhausting gas in the chamber 200, and the number 210b is a discharge in the chamber 200. A gas injection unit for injecting gas, and the numeral 250 is a firing unit for firing the actual layer 240.

First, the front substrate 220 and the rear substrate 230 that have undergone a predetermined manufacturing process may be disposed in the chamber 200.

Here, a real layer 240 may be formed on the front substrate 220 and / or the rear substrate 230 to bond the front substrate 220 and the rear substrate 230 to each other. Preferably, it may be formed on the rear substrate 230.

Thereafter, the exhaust unit 210a exhausts the gas in the chamber 200 in which the front substrate 220 and the rear substrate 230 are disposed. That is, the impurity gas in the chamber 200 is exhausted to the outside.

Thereafter, the gas injection unit 210b may inject the discharge gas into the chamber 200. For example, in the atmosphere where the temperature in the chamber 200 is about 200 ° C. or more and 400 ° C. or less, the pressure of the chamber 200 is about 4 × 10 ⁻² torr or more and ² tor or less so that xenon (Xe), neon (Ne), argon Discharge gas, such as (Ar), can be injected.

Thereafter, the front substrate 220 and the rear substrate 230 may be bonded to each other using a predetermined bonding means (not shown). Here, the baking unit 250 may harden the real layer 240 by applying heat or light to the real layer 240 so that the front substrate 220 and the rear substrate 230 may be sufficiently firmly bonded.

Here, the real layer 240 preferably includes a photocurable material. Then, the firing unit 250 may apply the predetermined light to the real layer 240 when the front substrate 220 and the rear substrate 230 are bonded to cure the real layer 240 to sinter. Through this process, it is possible to prevent the generation of impurity gas during firing of the real layer 240.

When the plasma display panel is formed by bonding the front substrate 220 and the rear substrate 230 by the method described above, the front substrate 220 and the discharge gas may be injected together in the discharge cell during the bonding process. It is not necessary to form exhaust holes in the rear substrate 230. For this reason, the exhaust hole can be omitted.

As such, since the exhaust hole is omitted, the formation of the conventional exhaust tip Tip for connecting the gas injection unit for injecting the discharge gas through the exhaust hole is also omitted. Here the exhaust tip can be interpreted as an exhaust pipe.

According to the related art, when the discharge tip is injected while exhausting impurity gas inside the plasma display panel using the exhaust tip, the exhaust tip is formed only at a specific position on the plasma display panel, and the front substrate and the rear substrate are bonded together. Since the exhaust and gas injection processes are carried out afterwards, there is a relatively high possibility that impurity gas remains inside the plasma display panel, that is, within the discharge cell. Accordingly, in the structure in which the conventional exhaust tip is included, the discharge voltage may further increase because impurity gas interrupts the discharge, and the discharge may become unstable due to the deviation of the exhaust, thereby reducing driving efficiency.

On the other hand, when gas injection is performed together during the bonding process as shown in FIG. 2, the impurity gas may be sufficiently removed and the discharge gas may be sufficiently evenly injected.

Accordingly, in the plasma display panel having the exhaust tip omitted, that is, the tip-less structure, as shown in FIG. 2, the discharge voltage, that is, the driving voltage is relatively low, as compared with the conventional structure including the exhaust tip. Can be.

In addition, in a structure including a conventional exhaust tip, processes such as a bonding process, a coupling process of the exhaust tip, an exhaust process, and a gas injection process should be sequentially included.

On the other hand, in the tip-less plasma display panel, the exhaust process and the gas injection process are performed together during the bonding process, thereby reducing the number of manufacturing processes and the process time. Accordingly, the manufacturing cost can be further reduced.

Next, FIG. 3 is a view for explaining the reason why the first electrode and the second electrode have a single layer structure in the structure in which the exhaust tip is omitted.

Referring to FIG. 3, unlike the present invention, an example in which the first electrode 400 and the second electrode 410 formed on the front substrate 101 are formed of a plurality of layers is shown.

For example, the first electrode 400 and the second electrode 410 may include transparent electrodes 400a and 410a and bus electrodes 400b and 410b.

Meanwhile, in the case of FIG. 3, the bus electrodes 400b and 410b must be formed again after the transparent electrodes 400a and 410a are formed in the process of forming the first electrode 400 and the second electrode 410.

Accordingly, in the case of FIG. 3, as in the present invention, the number of manufacturing processes is greater than that of forming the first electrode and the second electrode as a single layer, and thus, the manufacturing cost may increase.

In addition, in the case of Figure 3, because the use of relatively expensive indium tin oxide (ITO), etc., the manufacturing cost can be further increased.

On the other hand, when forming the first electrode and the second electrode as a single layer as in the present invention, the manufacturing process is simplified, and because a relatively expensive material such as indium-tin oxide (ITO) is not required, The manufacturing cost can be reduced.

On the other hand, when the first electrode and the second electrode is formed as a single layer, since the transparent material is not substantially used, the first electrode and the second electrode may have a darker color than the upper dielectric layer formed on the front substrate, thereby lowering the aperture ratio. . In this case, when the widths of the first and second electrodes are reduced to increase the aperture ratio, the discharge voltage is increased to reduce the driving efficiency.

However, in the structure in which the exhaust tip is omitted as in the present invention, since the discharge voltage can be lowered by the uniform distribution of the discharge gas in the panel as described above, the first electrode and the second electrode are formed as a single layer. Even reducing the width of the first electrode and the second electrode can prevent the discharge voltage from rising sharply. As a result, not only the manufacturing cost can be reduced, but also the reduction of the aperture ratio and the driving efficiency can be prevented.

It is preferable that the first electrode and the second electrode of this single layer structure include a substantially opaque electrically conductive metal material. For example, it may include a material having excellent electrical conductivity, such as silver (Ag), copper (Cu), aluminum (Al), and the like, which is less expensive than indium tin oxide (ITO).

4 is a view for explaining an example of a structure in which a black layer is further added between the first electrode and the second electrode and the front substrate.

Referring to FIG. 4, an electrode formed on the front substrate 101, that is, the first electrode 102 and the second electrode 103, and the front substrate 101 may be prevented from discoloring. A black layer 500a and 500b having a darker color than at least one of the electrode 102 and the second electrode 103 may be further provided. That is, when the front substrate 101 directly contacts the first electrode 102 or the second electrode 103, the front substrate 101 directly contacts the first electrode 102 or the second electrode 103. Migration may occur where a certain area is discolored to a yellow series, and the black layer 500a 500b may prevent discoloration of the front substrate 101 by preventing such a phenomenon.

The black layers 500a and 500b preferably include a black material having a substantially dark color, for example, ruthenium (Rb).

As such, when the black layers 500a and 500b are provided between the front substrate 101 and the first electrode 102 and the second electrode 103, the first electrode 102 and the second electrode 103 are provided. Even if the reflectance is made of a material, it is possible to prevent the generation of reflected light.

5 is a view for explaining a first embodiment of the first electrode and the second electrode of the plasma display panel according to an embodiment of the present invention.

Referring to FIG. 5, the first electrode 600 and the second electrode 610 may include one or more line parts 600a, 600b, 600c, 610a, 610b, and 610c.

The line parts 600a, 600b, 600c, 610a, 610b, and 610c may be formed to intersect the third electrode 620 in the discharge cell partitioned by the partition wall 630.

The line parts 600a, 600b, 600c, 610a, 610b, and 610c are preferably spaced apart from each other within a discharge cell.

For example, the first line part 600a and the second line part 600b of the first electrode 600 are spaced apart from each other at a distance d1, and the second line part 600b and the third line part 600c are separated from each other. May be spaced apart by d2. Here, the intervals d1 and d2 may be the same or may be different from each other.

Alternatively, two or more line portions may be adjacent to each other.

In addition, the line portions 600a, 600b, 600c, 610a, 610b, and 610c have a predetermined width.

For example, the first line portion 600a of the first electrode 600 has a width of W1, the second line portion 600b has a width of W2, and the third line portion 600c has a width of W3. Can have Wherein W1, W2, W3 may be all the same.

Here, the shapes of the first electrode 600 and the second electrode 610 may be symmetric with each other in the discharge cell.

In this structure, a discharge is generated between the first line part 600a of the first electrode 600 and the first line part 610a of the second electrode 610 facing each other at a distance of d3. The discharge generated is the second line portion 600b of the first electrode 600, the second line portion 610b of the second electrode 610, and the third line portion 600c and the second of the first electrode 600. It may be diffused to the third line part 610c of the electrode 610.

In the above description, only the case where the shapes of the first electrode 600 and the second electrode 610 are symmetric has been described. Alternatively, the first electrode 600 and the second electrode 610 may be asymmetric.

For example, the first electrode 600 may include three line portions, while the second electrode 610 may include two line portions.

In addition, the number of such line portions may be adjusted. For example, the first electrode or the second electrode may include four or five line portions.

6A to 6C are diagrams for describing a second embodiment of the first electrode and the second electrode of the plasma display panel according to the embodiment of the present invention. 6A to 6C, descriptions of the above-described details will be omitted.

First, referring to FIG. 6A, in a plasma display panel according to an exemplary embodiment, one or more line portions 710a and 710b intersect the third electrode 770 in the first electrode 730 or the second electrode 760. , 740a and 740b and one or more protrusions 720 and 750 parallel to the third electrode 770.

The protrusions 720 and 750 are preferably formed to protrude from at least one of the plurality of line portions 710a, 710b, 740a, and 740b. For example, the protrusion 720 of the first electrode 730 may protrude from the line portion 710a, and the protrusion 750 of the second electrode 760 may protrude from the line portion 740a.

The protrusions 720 and 750 may form a gap g1 between the first electrode 730 and the second electrode 760 in a portion where the protrusions 720 and 750 are formed in the discharge cell partitioned by the partition wall 700. It is shorter than the space | interval g2 in another part. Accordingly, the start voltage of the discharge generated between the first electrode 730 and the second electrode 760, that is, the discharge voltage can be lowered.

In addition, the protrusions 720 and 750 preferably overlap with the third electrode 770 in the discharge cell. In this manner, the discharge voltage between the first electrode 730 and the third electrode 770 and the discharge voltage between the second electrode 760 and the third electrode 770 may be lowered.

Next, referring to FIG. 6B, the protrusions 720a, 720b, 720c, 750a, 750b, and 750c may be provided in plural. For example, the first electrode 730 may comprise a total of three protrusions, such as the first, second, and third protrusions 720a, 720b, 720c, and the second electrode 760 may also have a total of three protrusions, eg, The first, second, and third protrusions 750a, 750b, and 750c may be included.

The number of such protrusions can be variously adjusted.

Next, referring to FIG. 6C, the protrusions 750a, 750b, and 750c may have various shapes.

For example, an end portion thereof may include a curved surface, such as a protrusion 750a, or may have a polygonal shape such as 750b or 750c.

In the case where there are a plurality of protrusions, it is also possible that at least one of the plurality of protrusions has a shape different from that of the other protrusions. For example, in the case of two protrusions, one protrusion may have a curved surface as shown at number 750a of FIG. 6C, and the other may have a rectangular shape of number 750d of FIG. 6C.

Next, FIG. 7 is a view for explaining a third embodiment of the first electrode and the second electrode of the plasma display panel according to an embodiment of the present invention. In FIG. 7, the description of the above-described details will be omitted.

Referring to FIG. 7, connection portions 820b and 850b connecting two or more of the plurality of line portions 810a, 810b, 840a and 840b are further formed.

For example, the connection portion 820b of the first electrode 830 connects the first line portion 810a and the second line portion 810b of the first electrode 830 and at the same time the second electrode 860 of the second electrode 860. The connection part 850b connects the first line part 840a and the second line part 840b of the second electrode 860.

As such, when the connection parts 820b and 850b connect the two line parts 810a, 810b, 840a and 840b, the discharge may be more easily diffused in the discharge cells partitioned by the partition wall 800.

Next, FIG. 8 is a view for explaining a fourth embodiment of the first electrode and the second electrode of the plasma display panel according to the embodiment of the present invention. In FIG. 8, the description of the contents already described in detail above will be omitted.

Referring to FIG. 8, at least one of the plurality of protrusions 820a, 820c, 850a, and 850c may protrude in a first direction from at least one of the plurality of line portions 810a, 810b, 840a, and 840b, and at least one of the remaining protrusions. Protrudes in a second direction different from the first direction in one or more of the plurality of line portions 810a, 810b, 840a, and 840b.

Here, the first direction and the second direction are preferably opposite to each other.

For example, the protrusion 820a protrudes toward the center of the discharge cell at the line portion 810a, and the protrusion 820c protrudes in the direction opposite to the center direction of the discharge cell at the line portion 810b.

The protrusions 820c and the protrusions 850c may allow the discharge to spread more widely in the discharge cells.

Meanwhile, in FIG. 8, only one protrusion 820a and 850a protruding from the first electrode 830 and the second electrode 860 toward the center of the discharge cell are illustrated, but one or more may be possible. In particular, in order to lower the discharge start voltage and diffuse the discharge efficiently, it may be desirable to have two protrusions 820a and 850a.

Next, FIG. 9 is a diagram for describing a fifth embodiment of the first electrode and the second electrode of the plasma display panel according to the embodiment of the present invention. In FIG. 9, the description of the above-described details will be omitted.

9, the first electrode 1030 and the second electrode 1060 include four line portions 1010a, 1010b, 1010c, 1010d, 1040a, 1040b, 1040c, and 1040d, respectively, and three connection portions, respectively. (1020a, 1020b, 1020c, 1050a, 1050b, 1050c).

In addition, each connection portion 1020a, 1020b, 1020c, 1050a, 1050b, 1050c connects two or more line portions.

For example, in the first electrode 1030, the first connection part 1020a connects the first line part 1010a and the second line part 1010b, and the second connection part 1020b is the second line part 1010b. ) And the third line part 1010c, and the third connection part 1020c may connect the third line part 1010c and the fourth line part 1010d.

Next, FIG. 10 is a diagram for describing a sixth embodiment of a first electrode and a second electrode of a plasma display panel according to an embodiment of the present invention. In FIG. 10, the description of the above-described details will be omitted.

Referring to FIG. 10, the first electrode 1130 and the second electrode 1160 include four line portions 1110a, 1110b, 1110c, 1110d, 1140a, 1140b, 1140c, and 1140d, respectively, and three connection portions, respectively. 1120a, 1120b, 1120c, 1150a, 1150b, 1150c, and at least one of the connections 1120a, 1120b, 1120c, 1150a, 1150b, 1150c is disposed at a different position than the other connections.

For example, as shown in FIG. 10, the position where the first connector 1120a is disposed in the first electrode 1130 is different from the position where the second connector 1120b is disposed, and the second connector 1120b is disposed. Position is different from the position where the third connecting portion 1120c is disposed.

Next, FIGS. 11A to 11B are diagrams for describing a seventh embodiment of a first electrode and a second electrode of a plasma display panel according to an embodiment of the present invention. Here, in FIG. 11A to FIG. 11B, the description of the details already described above will be omitted.

First, referring to FIG. 11A, one or more of the line portions 1210a, 1210b, 1240a, and 1240b of the first electrode 1230 and the second electrode 1260 may have a different shape from other line portions.

For example, when the width of the first line portion 1240a of the second electrode 1260 is W1, the width of the second line portion 1240b may be W2 larger than W1.

On the other hand, referring to FIG. 11B, in contrast to FIG. 11A, when the width of the first line portion 1240a of the second electrode 1260 is W3, the width of the second line portion 1240b is smaller than W3. It is possible to be

As such, the width of the line portion may be adjusted in various ways.

Next, FIG. 12 is a view for explaining an eighth embodiment of the first electrode and the second electrode of the plasma display panel according to the embodiment of the present invention. Here, in FIG. 12, the description of the details already described above will be omitted.

12, at least one of the line portions 1310a, 1310b, 1340a, and 1340b of the first electrode 1330 and the second electrode 1360 has a different shape from other line portions.

For example, when the width of the first line portion 1340a of the second electrode 1360 is L1, the width of the second line portion 1340b may be L2 longer than L1.

Alternatively, unlike FIG. 12, L1 may be longer than L2.

Next, FIG. 13 is a view for explaining a ninth embodiment of the first electrode and the second electrode of the plasma display panel according to the embodiment of the present invention. In FIG. 13, the description of the contents already described in detail above will be omitted.

Referring to FIG. 13, the first electrode 1430 and the second electrode 1460 may have a first line portion 1410a and 1440a and a second line portion longer than the first line portion 1410a and 1440a, respectively. 1410b, 1440b).

In addition, the first electrode 1430 and the second electrode 1460 include first connection parts 1420a and 1450a and second connection parts 1420b and 1450b, respectively, and the first connection parts 1420a and 1450a and second electrodes 1430a and 1450a, respectively. The connecting parts 1420b and 1450b may protrude diagonally from the first line parts 1410a and 1440a to connect the first line parts 1410a and 1440a and the second line parts 1410b and 1440b, respectively.

Accordingly, the first electrode 1430 and the second electrode 1460 can have a trapezoidal shape.

Next, FIG. 14 is a diagram for describing a tenth embodiment of a first electrode and a second electrode of a plasma display panel according to an embodiment of the present invention. In FIG. 14, the description of the contents already described above in detail will be omitted.

Referring to FIG. 14, the first electrode 1530 and the second electrode 1560 have a rectangular shape.

13 to 14, in the plasma display panel according to the exemplary embodiment, the first electrode and the second electrode may have various polygonal shapes.

Next, FIGS. 15A to 15B are diagrams for describing an eleventh embodiment of a first electrode and a second electrode of a plasma display panel according to an embodiment of the present invention. Here, in FIG. 15A to FIG. 15B, the description of the above-described details will be omitted.

First, referring to FIG. 15A, the line portions 1610 and 1640 of the first electrode 1630 and the second electrode 1660 may have portions of the central portion protruding toward the center of the discharge cell partitioned by the partition wall 1600. It may include.

In addition, the protrusions 1620a, 16020b, 1650a, and 1650b may protrude from the protruding portions of the line portions 1610 and 1640.

Next, referring to FIG. 15B, the line portions 1610 and 1640 of the first electrode 1630 and the second electrode 1660 protrude in a direction opposite to the center direction of the discharge cell in which the center portion is partitioned by the partition wall 1600. It may include a portion.

In addition, the protrusions 1620a, 16020b, 1650a, and 1650b may protrude from opposite portions of the protruding portions of the line portions 1610 and 1640.

In the plasma display panel according to the exemplary embodiment of the present invention described above, the content of lead (Pb) is preferably 1000 parts per million (PPM) or less.

Here, the total content of lead in the total components of the plasma display panel may be 1000 PPM or less, so that the total content of lead may be 1000 ppm or less.

Alternatively, the content of lead in specific components of the plasma display panel may be 1000 PPM or less. For example, the content of the lead component of the partition and / or the lead component of the dielectric layer is 1000 ppm or less.

Alternatively, the content of lead in each component of the plasma display panel may be 1000 PPM or less. That is, the content of lead in the components of the partition wall, the dielectric layer, the electrode, the phosphor layer, and the real layer of the plasma display panel is set to 1000 PPM or less, respectively.

As such, the reason for setting the total content of the lead component to 1000 PPM or less is because it may adversely affect the human body when an excessive amount of lead is included in the plasma display panel.

FIG. 16 is a diagram illustrating a frame for implementing grayscale of an image in a plasma display panel according to an embodiment of the present invention.

17 is a view for explaining an example of the operation of the plasma display panel according to an embodiment of the present invention.

First, referring to FIG. 16, a frame for implementing gray levels of an image in a plasma display panel according to an embodiment of the present invention is divided into several subfields having different emission counts.

In addition, although not shown, each subfield may further include a reset period for initializing all discharge cells, an address period for selecting discharge cells to be discharged, and a sustain period for implementing gray levels according to the number of discharges. Sustain Period).

For example, in the case of displaying an image with 256 gray levels, one frame is divided into eight subfields SF1 to SF8 as shown in FIG. 16, and each of the eight subfields SF1 to SF8 is represented. The reset period, the address period and the sustain period are further divided.

The gray scale weight of the corresponding subfield may be set by adjusting the number of the sustain signals supplied in the sustain period. That is, a predetermined gray scale weight can be given to each subfield using the sustain period. For example, the gray scale weight of each subfield is 2 ⁿ by setting the gray scale weight of the first subfield to 2 ⁰ and the gray scale weight of the second subfield to 2 ¹ (where n = 0, 1). , 2, 3, 4, 5, 6, and 7) to increase the gray scale weight of each subfield. As described above, the number of sustain signals supplied in the sustain period of each subfield is adjusted according to the gray scale weight in each subfield, thereby implementing gray levels of various images.

The plasma display panel according to an embodiment of the present invention uses a plurality of frames to implement an image, for example, to display an image of 1 second. For example, 60 frames are used to display an image of 1 second. In this case, the length T of one frame may be 1/60 second, that is, 16.67 ms.

In FIG. 16, only one frame includes eight subfields. However, the number of subfields forming one frame may be variously changed. For example, one frame may be configured with 12 subfields from the first subfield to the twelfth subfield, or one frame may be configured with 10 subfields.

In addition, in FIG. 16, subfields are arranged in the order of increasing magnitude of gray scale weight in one frame. Alternatively, subfields may be arranged in order of decreasing gray scale weight in one frame, or gray scale. Subfields may be arranged regardless of the weight.

Next, referring to FIG. 17, an example of an operation of the plasma display panel of the present invention in any one of the subfields included in the same frame as in FIG. 16 is shown.

First, the first ramp-down signal may be supplied to the first electrode Y in the pre-reset period before the reset period.

In addition, while the first falling ramp signal is supplied to the first electrode Y, a pre-sustain signal in a polarity opposite to the first falling ramp signal may be supplied to the second electrode Z.

Here, it is preferable that the first falling ramp signal supplied to the first electrode Y gradually descends to the tenth voltage V10.

In addition, it is preferable that the pre-sustain signal maintain the pre-sustain voltage Vpz substantially constant. Here, it is preferable that the pre-sustain voltage Vpz is approximately the same voltage as the voltage of the sustain signal SUS supplied in the subsequent sustain period, that is, the sustain voltage Vs.

As such, when the first falling ramp signal is supplied to the first electrode Y and the presuspension signal is supplied to the second electrode Z in the pre-reset period, a wall of a predetermined polarity is formed on the first electrode Y. Wall charges are accumulated, and wall charges of opposite polarity to the first electrode Y are accumulated on the second electrode Z. For example, positive wall charges are accumulated on the first electrode Y, and negative wall charges are accumulated on the second electrode Z.

This makes it possible to generate a set-up discharge of sufficient intensity in the subsequent reset period, which in turn makes it possible to perform the initialization sufficiently stably.

In addition, even when the voltage of the rising ramp signal Ramp-Up supplied to the first electrode Y becomes smaller in the reset period, it is possible to generate the setup discharge of sufficient intensity.

From the viewpoint of securing the driving time, the pre-reset period is included before the reset period in the subfield arranged in time among the subfields of the frame, or the pre-reset before the reset period in two or three subfields of the subfield of the frame. It is also possible to include a period.

Alternatively, this pre-reset period may be omitted in all subfields.

After the pre-reset period, in a set-up period of a reset period for initialization, a ramp-up signal in a direction opposite to that of the first falling ramp signal may be supplied to the first electrode Y.

Here, the rising ramp signal may include a first rising ramp signal gradually increasing with a first slope from the twentieth voltage V20 to the thirtieth voltage V30 and the second rising ramp signal from the thirtieth voltage V30 to the forty-th voltage V40. It may include a second rising ramp signal rising to the slope.

In this setup period, a weak dark discharge, that is, setup discharge, occurs in the discharge cell by the rising ramp signal. This setup discharge causes a certain amount of wall charges to accumulate in the discharge cell.

Here, it is preferable that the second slope of the second rising ramp signal is gentler than the first slope. As such, when the second slope is gentler than the first slope, the voltage is increased relatively quickly until the setup discharge occurs, and the voltage is increased relatively slowly while the setup discharge occurs. The amount of light generated by the setup discharge can be reduced.

Accordingly, the contrast characteristic can be improved.

In a set-down period after the set-up period, a second ramp-down signal in a direction opposite to that of the ramp ramp signal may be supplied to the first electrode Y after the ramp ramp signal.

Here, it is preferable that the second falling ramp signal gradually decreases from the twentieth voltage V20 to the fifty voltage V50.

As a result, weak erase discharge, that is, set-down discharge, occurs in the discharge cell. By this set-down discharge, wall charges such that address discharge can be stably generated in the discharge cells remain uniformly.

18A to 18B are views for explaining another form of the rising ramp signal or the second falling ramp signal.

First, referring to FIG. 18A, the rising ramp signal gradually increases from the thirtieth voltage V30 to the forty-th voltage V40 after rapidly rising to the thirtieth voltage V30.

As such, the rising ramp signal may be gradually raised at different inclinations over two stages as in FIG. 17, and may be gradually raised in one stage as shown here in FIG. 18A, in various forms. It is possible to change.

Next, referring to FIG. 18B, the second falling ramp signal has a form in which the voltage gradually decreases from the thirtieth voltage V30.

As described above, the second falling ramp signal may be changed in various forms, such as a different point in time at which the voltage falls.

Meanwhile, in the address period after the reset period, a scan bias signal that substantially maintains a voltage higher than the 50 th voltage V50 of the second falling ramp signal may be supplied to the first electrode Y. FIG.

In addition, the scan signal Scan, which decreases from the scan bias signal by the scan voltage ΔVy, may be supplied to all of the first electrodes Y1 to Yn.

For example, the first scan signal Scan 1 is supplied to the first first electrode Y1 of the plurality of first electrodes Y, and then the second scan signal (2) is applied to the second first electrode Y2. Scan 2) is supplied, and the n-th scan signal Scan n is supplied to the n-th first electrode Yn.

On the other hand, the width of the scan signal in units of subfields may vary. That is, the width of the scan signal Scan in at least one subfield may be different from the width of the scan signal Scan in other subfields. For example, the width of the scan signal Scan in the subfield located later in time may be smaller than the width of the scan signal Scan in the subfield located earlier. In addition, the scan signal scan width decreases according to the arrangement order of the subfields gradually, such as 2.6 ms (microseconds), 2.3 ms (microseconds), 2.1 ms (microseconds), 1.9 ms (microseconds), and the like. Or 2.6 ㎲ (microseconds), 2.3 ㎲ (microseconds), 2.3 ㎲ (microseconds), 2.1 ㎲ (microseconds) ... 1.9 ㎲ (microseconds), 1.9 ㎲ (microseconds) It could be done.

As such, when the scan signal Scan is supplied to the first electrode Y, a data signal rising by the magnitude ΔVd of the data voltage may be supplied to the third electrode X to correspond to the scan signal.

As the scan signal Scan and the data signal Data are supplied, the voltage difference between the voltage of the scan signal and the data voltage Vd of the data signal and the wall voltage due to the wall charges generated in the reset period. In addition, address discharge is generated in the discharge cells to which the voltage Vd of the data signal is supplied.

Here, it is preferable that the sustain bias signal is supplied to the second electrode Z in order to prevent the address discharge from becoming unstable due to the interference of the second electrode Z in the address period.

Here, it is preferable that the sustain bias signal maintain a substantially constant sustain bias voltage Vz smaller than the voltage of the sustain signal supplied in the sustain period and larger than the voltage of the ground level GND.

Thereafter, the sustain signal SUS may be alternately supplied to the first electrode Y and / or the second electrode Z in the sustain period for displaying an image. The sustain signal SUS preferably has a magnitude of a voltage of ΔVs.

When the sustain signal SUS is supplied, the discharge cell selected by the address discharge is added with the wall voltage in the discharge cell and the sustain voltage Vs of the sustain signal SUS, and the first electrode when the sustain signal SUS is supplied. A sustain discharge, that is, a display discharge, occurs between (Y) and the second electrode Z.

19 is a diagram for explaining another type of the sustain signal.

Referring to FIG. 19, a positive sustain signal and a negative sustain signal are alternately supplied to any one of the first electrode Y and the second electrode Z, for example, the first electrode. do.

As described above, it is preferable that the bias signal is supplied to the other electrode, for example, the second electrode Z, while the positive sustain signal and the negative sustain signal are supplied to any one electrode.

Here, the bias signal preferably maintains the voltage at the ground level GND substantially constant.

As shown in FIG. 19, when the sustain signal is supplied only to one of the first electrode Y and the second electrode Z, one of the first electrode Y and the second electrode Z may be used. Only one driving board in which circuits for supplying a sustain signal is arranged is required.

As a result, the overall size of the driving unit can be reduced, thereby reducing the manufacturing cost.

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

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

As described in detail above, the plasma display panel of the present invention can simplify the manufacturing process by omitting the exhaust unit and by forming the first electrode and the second electrode formed on the front substrate as a single layer. It is possible to lower and stabilize the discharge, thereby improving the driving efficiency.

Claims (22)

A front substrate having a first electrode and a second electrode parallel to each other; A rear substrate having a third electrode intersecting the first electrode and the second electrode and disposed to face the front substrate; And A partition wall partitioning a discharge cell between the front substrate and the rear substrate, The first electrode and the second electrode is formed of a single layer, At least one of the front substrate and the rear substrate is omitted by a method of bonding the front substrate and the rear substrate in a chamber filled with discharge gas after exhaust, At least one of the first electrode and the second electrode A line portion intersecting the third electrode; In parallel with the third electrode, and includes a protrusion protruding from the line portion, The protrusion includes a first protrusion and a second protrusion, The first protrusion protrudes in a first direction, the second protrusion protrudes in a second direction different from the first direction, and the first direction is a direction toward the center of the discharge cell in the long axis direction of the discharge cell. And wherein the second direction is a direction toward the outer side of the discharge cell in the long axis direction of the discharge cell. The method of claim 1, A real layer is formed between the front substrate and the rear substrate to bond the front substrate and the rear substrate. And the actual layer comprises a photocurable material. delete The method of claim 1, And a black layer having a darker color than at least one of the first electrode and the second electrode is formed between at least one of the first electrode and the second electrode and the front substrate. delete The method of claim 1, And a connecting portion connecting two or more of the plurality of line portions to each other. delete delete The method of claim 1, And an end portion of the protrusion portion includes a curved surface. delete The method of claim 1, And the exhaust unit is at least one of an exhaust hole, an exhaust tip, and an exhaust pipe. delete The method of claim 1, The barrier rib includes a first barrier rib and a second barrier rib that cross each other. And a height of the first partition wall is different from a height of the second partition wall. The method of claim 1, The discharge cell includes a first discharge cell and a second discharge cell, A first phosphor layer is formed in the first discharge cell, a second phosphor layer is formed in the second discharge cell and emits light of a different color from the first phosphor layer, The thickness of the first phosphor layer is different from the thickness of the second phosphor layer. delete delete delete delete delete delete delete delete

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