KR100659094B1 - Plasma display panel - Google Patents

Abstract

A plasma display panel is provided to improve discharge efficiency and form readily pixels by forming discharge cells for unit pixels with a polygonal structure. A second substrate(202) is disposed opposite to a first substrate(201). A barrier rib(205) is disposed between the first and second substrates in order to define discharge cells(220) in a discharge space. A plurality of pairs of sustain electrodes include at least one common electrode(206) and at least one scan electrode(207) in order to cause gas discharge within the discharge cells. An R, G, and B phosphor layers(210) are disposed within the discharge cells. The discharge cells are filled with discharge gas. Three discharge cells of the R, G, and B phosphor layers are composed of unit pixels of a triangular structure.

Description

Plasma display panel {Plasma display panel}

1 is a plan view illustrating a structure of an electrode and a discharge cell in a plasma display panel having a ring type electrode and a delta type discharge cell structure according to an embodiment of the prior art.

2 is a plan view illustrating an electrode and a cell structure in a plasma display panel having a ring type electrode and a delta type discharge cell structure according to another embodiment of the prior art.

3 is a partially cutaway exploded perspective view illustrating a plasma display panel having a stripe electrode and a delta discharge cell structure according to a first embodiment of the present invention.

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

5 is a plan view illustrating the structure of the electrode and the discharge cell of FIG.

FIG. 6 is a plan view illustrating the structure of an electrode and a discharge cell in the plasma display panel having the stripe electrode and the delta discharge cell structure according to the second embodiment of the present invention.

7 is a plan view illustrating the structure of an electrode and a discharge cell in the plasma display panel having the stripe electrode and the delta discharge cell structure according to the third embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

200: plasma display panel 201: first substrate

202: second substrate 203, 303, 403: address electrode

204: dielectric layer 205: partition wall

206: common electrode 207, 307, 407: scanning electrode

209: protective film 210: phosphor layer

220, 320, 420: discharge cells

The present invention relates to a plasma display panel, and more particularly, to a plasma display panel having a novel stripe electrode and a delta discharge cell structure.

Plasma display panel is a flat panel display panel that realizes images by using a gas discharge phenomenon is a display panel that has been in the spotlight in recent years because it is possible to realize a thin, high-quality large screen having a wide viewing angle.

The plasma display panel is classified into a stripe type or a ring type according to the arrangement structure of the electrodes provided therein. In the ring type, the sustain electrodes formed of the common electrode and the scan electrode surround the discharge cells in which gas discharge occurs. It refers to a form having a structure.

In addition, such a plasma display panel is referred to as being divided into a stripe type, a well type, or a delta type according to the type of discharge cells provided therein, wherein the delta type is a matrix type. As a type, the three discharge cells constituting the unit pixel are formed in a triangular structure.

After all, the plasma display panel having a ring type electrode and a delta type discharge cell structure refers to a plasma display panel having a structure in which sustain electrodes are disposed to surround the discharge cells and three discharge cells constituting the unit pixel form a triangle. .

1 is a plan view illustrating a structure of an electrode and a discharge cell in a plasma display panel having a ring type electrode and a delta type discharge cell structure according to an embodiment of the prior art.

In the conventional plasma display panel as described above, as shown in FIG. 1, the distance d between neighboring scan electrodes 107 is narrowed, thereby increasing capacitance, thereby increasing reactive power consumption. There was a problem.

On the other hand, the problem related to such reactive power consumption does not occur between the common electrodes (not shown) or between the common electrode and the scan electrode 107, there is no potential difference between the common electrodes, the common electrode and the scan electrode 107 This is because a separate energy recovery circuit is installed and operated to prevent generation of reactive power consumption.

In addition, the conventional plasma display panel has a problem in that the manufacturing process is difficult due to low design freedom because two common electrodes or scanning electrodes should be formed in one partition based on a predetermined cross section.

In addition, the conventional plasma display panel has a problem that the discharge efficiency is low and the pixel implementation becomes difficult because the lines connecting the midpoints of the three discharge cells 120 constituting the unit pixel have an isosceles triangle structure instead of an equilateral triangle. There was this.

2 is a plan view illustrating the structure of an electrode and a discharge cell in a plasma display panel having a ring type electrode and a delta type discharge cell structure according to another embodiment of the prior art.

This is to solve the problems related to the discharge efficiency and the pixel implementation as described above, as shown in the figure, by increasing the distance between the discharge cells 120, the distance between the neighboring scan electrodes 107, unit pixel The structure of the discharge cell was improved so that the lines connecting the midpoints of the three discharge cells 120 forming the equilateral triangle have an equilateral triangle structure.

However, the plasma display panel having such a structure has a problem in that the three discharge cells 107 constituting the unit pixel are excessively spaced apart from each other so that high definition becomes difficult.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a plasma display panel having a novel stripe electrode and a delta discharge cell structure in which the reactive power consumption is greatly reduced.

Another object of the present invention is to provide a plasma display panel having a novel stripe electrode and a delta discharge cell structure in which the discharge efficiency of the unit pixel is formed in a regular polygonal structure, the discharge efficiency of which is greatly improved, and the pixel is easily implemented. .

It is still another object of the present invention to provide a plasma display panel having a novel stripe electrode and a delta discharge cell structure having greatly improved design freedom by forming an electrode structure in a stripe shape.

In order to achieve the above object and other objects, the present invention is disposed between the first substrate, the second substrate spaced apart from the first substrate, the first substrate and the second substrate, the discharge is generated At least one common electrode and at least one scan electrode extending in one direction along the partition walls and spaced apart from each other within the partition walls and causing gas discharge in the discharge cells by interaction; A plurality of pairs of sustain electrodes including a plurality of sustain electrodes including R, G, and B phosphor layers disposed in the discharge cells, and discharge gas charged in the discharge cells; The present invention provides a plasma display panel arranged to constitute a unit pixel having a triangular structure.

Here, the three discharge cells of the R, G, and B phosphor layers constitute a unit pixel having an inverted triangle structure, and the inverted triangle structure may be disposed parallel to the neighboring inverted triangle structure in a horizontal direction and a vertical direction. .

In addition, three discharge cells of the R, G, and B phosphor layers constitute a unit pixel having an equilateral triangle structure, and the equilateral triangle structure may be disposed in parallel with the other equilateral triangle structure in a horizontal direction and a vertical direction.

Further, the common electrode or the scan electrode is alternately arranged to extend along the first partition wall in the first partition wall extending in one direction, and to extend along the second partition wall in the second partition wall parallel to the first partition wall. desirable.

In addition, the common electrode or the scan electrode extends along the first partition wall in the first partition wall extending in one direction and is not disposed in the second partition wall arranged parallel to the first partition wall, and disposed parallel to the second partition wall. It may be arranged alternately to extend along the third partition within the third partition.

Furthermore. The partition wall surrounding each discharge cell of the R, G, and B phosphor layers may form an octagon, a hexagon, or a quadrangle.

Further, the first substrate is preferably formed of a transparent material.

In addition, the common electrode may extend in one direction, and the scan electrode may extend to cross the common electrode.

In addition, the electrode may further include address electrodes extending in a direction crossing the direction in which the common electrode and the scan electrode extend.

In this case, the scan electrode is preferably disposed closer to the address electrode than the common electrode.

In this case, preferably, a dielectric layer is disposed between the phosphor layer and the second substrate, and the address electrode is disposed in the dielectric layer.

Further, it is preferable to further include a protective layer disposed to cover at least a portion of the partition, but the present invention is not limited thereto.

Further, the partition wall preferably includes a first partition wall portion located on the first substrate side and a second partition wall portion located on the second substrate side, but the present invention is not limited thereto.

In this case, the first partition is preferably a dielectric, but the present invention is not limited thereto.

In this case, the common electrode may be disposed in the first partition portion, and the scan electrode may be disposed in the second partition portion.

In this case, the common electrode and the scan electrode may be disposed in the first partition portion, and the phosphor layer may be disposed in a space defined by the second partition portion and the second substrate.

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

3 is a partially cutaway exploded perspective view illustrating a plasma display panel having a stripe electrode and a delta discharge cell structure according to a first embodiment of the present invention, and FIG. 4 is a cross-sectional view taken along line IV-IV of FIG. 3. 5 is a plan view showing the structure of the electrode and the discharge cell of FIG.

Here, the first substrate 201 is made of a material having good light transmittance such as glass. Further, since there is no sustain electrode made of a scan electrode and a common electrode formed of an indium tin oxide (ITO) film existing on the first substrate of the conventional plasma display panel, the first substrate 201 has a front transmittance of visible light. This is significantly improved.

In addition, the second substrate 202 is spaced apart in parallel from the first substrate 201 at predetermined intervals, and is usually made of a material containing glass as a main component.

In addition, the partition wall 205 is disposed between the first substrate 201 and the second substrate 202 to partition a space between the first substrate 201 and the second substrate 202. In the present embodiment, the partition 205 includes a first partition 205a and a second partition 205b. However, the present invention is not limited thereto, and the partition wall 205 may be formed in a single structure.

In this case, the first partition 205a is disposed on the first substrate 201 and the second partition 205b is disposed on the second substrate 202.

In addition, the first partition 205a and the second partition 205b may be integrally formed in one process, but alternatively, may be formed as separate objects in a separate process.

In addition, in the present embodiment, as shown in Fig. 2, the first partition 205a and the second partition 205b divide the discharge space into a delta type, which is a kind of matrix form.

That is, the first partition 205a and the second partition 205b may have a discharge space such that the three discharge cells 220 of the R, G, and B phosphor layers 210 to be described later constitute a unit pixel having a triangular structure. Is partitioning. In this way, the coating area of the phosphor layer 210 is increased to solve the problem of lowering the luminous efficiency due to the application area of the narrow phosphor layer, which is a problem of the conventional stripe-type barrier rib structure or the well-type barrier rib structure of the matrix type. Can be.

More specifically, the three discharge cells 220 of the R, G, and B phosphor layers 210 constitute a unit pixel having an inverted triangle structure, and the inverted triangle structure has a horizontal direction and another neighboring inverted triangle structure. It may be arranged parallel to the vertical direction.

In addition, the three discharge cells 220 of the R, G, and B phosphor layers 210 constitute a unit pixel having an equilateral triangle structure, and the equilateral triangle structure is disposed in parallel with the other equilateral triangle structures in a horizontal direction and a vertical direction. May be

As such, the three discharge cells 220 of the R, G, and B phosphor layers 210 are disposed in an inverted triangle structure or an equilateral triangle structure, thereby different from each of the R, G, and B phosphor layers 210 constituting the unit pixel. Since the distances to the phosphor layers are all equal (L ₁ = L ₂ = L ₃ , L ₁ '= L ₂ ' = L ₃ '), the discharge efficiency can be improved, and the pixel can be easily implemented.

In addition, the cross section of the discharge cell 220 is formed in an octagon in the present embodiment, but the present invention is not limited thereto, and may be formed in various other shapes such as triangle, square, pentagon or hexagon.

In addition, the first partition 205a and the second partition 205b may be formed to have the same shape or may be formed to have different shapes.

3, at least one common electrode 206 and one scanning electrode 207 extending in one direction along the first partition 205a are disposed in the first partition 205a. It is. However, the present invention is not limited thereto, and the common electrode 206 may be disposed in the first partition 205a and the scan electrode 207 may be disposed in the second partition 205b. An electrode arrangement structure is possible.

Since the common electrode 206 and the scan electrode 207 are disposed in the partition wall 205, the common electrode 206 and the scan electrode 207 are preferably made of only a bus electrode without a transparent electrode. Therefore, there is no need to install an expensive transparent electrode can reduce the manufacturing cost associated with the electrode.

 In addition, the common electrode 206 and the scan electrode 207 constitute a pair of sustain electrodes, are spaced apart from each other, and cause a gas discharge in the discharge cell 220 by interaction.

More specifically, the common electrode 206 or the scan electrode 207 extends along the first first partition 205a in the first first partition 205a extending in one direction, and the first first It is preferable to alternately arrange so as to extend along this second first partition 205a in the second first partition 205a disposed in parallel with the first partition 205a. That is, it is preferable that the common electrode 206 or the scan electrode 207 is disposed at every partition wall 205 of each row or column extending in one direction.

In this way, one common electrode 206 or one scan electrode 207 is disposed on one partition 205 based on a predetermined cross section, and adjacent scan electrodes 207 are disposed to face each other and face each other. The intervals d ₁ and d ₂ are widened on average to decrease the capacitance, thereby reducing the consumption of reactive power generated between the scan electrodes 207.

In this way, only one common electrode 206 or one scanning electrode 207 is disposed in one partition wall 205 on the basis of a predetermined cross section, so that design freedom is greatly increased as compared with the related art. Therefore, the process related to the installation of the sustain electrodes 206 and 207 can be made easier than in the conventional case.

In addition, the common electrode 206 or the scan electrode 207 extends along the first first partition 205a in the first first partition 205a extending in one direction, and the first first partition It is not disposed in the second first partition portion 205a disposed in parallel with the portion 205a, and in the third first partition portion 205a disposed in parallel with the second first partition portion 205a. It may be arranged alternately so as to extend along the one partition 205a.

By doing so, the distance d 'between the adjacent scan electrodes 207 spaced apart from each other is widened so that the consumption of reactive power generated between the scan electrodes 207 can be further reduced.

In this case, only one common electrode 206 or one scan electrode 207 is disposed in one partition wall 205 on the basis of a predetermined cross section, so that design freedom is greatly increased as compared with the prior art. Therefore, the process related to the installation of the sustain electrodes 206 and 207 can be made easier than in the conventional case.

In addition, the common electrode 206 and the scan electrode 207 face each other and extend in parallel to each other. In this case, the common electrode 206 and the scan electrode 207 are preferably formed to correspond to each other. Here, that the common electrode 206 and the scan electrode 207 are formed to correspond to each other means that the shape of the common electrode 206 and the shape of the scan electrode 207 are the same or similar to each other, and their arrangement position is a predetermined reference line ( (Not shown) is formed to be symmetrical with each other.

In addition, the common electrode 206 and the scan electrode 207 are formed of a conductive metal such as aluminum or copper.

In addition, the address electrodes 203 may be disposed on the surface of the second substrate 202 toward the partition wall 205 so as to extend across the discharge cells 220. Here, the address electrodes 203 are preferably spaced apart from each other at predetermined intervals so as to be parallel to each other.

In addition, the address electrodes 203 may extend in a direction crossing the direction in which the common electrode 206 and the scan electrode 207 extend.

Here, the address electrodes 203 are used to generate an address discharge for facilitating a sustain discharge between the common electrode 206 and the scan electrode 207. More specifically, the address electrodes 203 lower the voltage at which the sustain discharge is started. do.

Here, the address discharge is a discharge occurring between the scan electrode 207 and the address electrode 203. When the address discharge is completed, cations are accumulated on the scan electrode 207 side and electrons are accumulated on the common electrode 206 side. The sustain discharge between the scan electrode 207 and the common electrode 206 becomes easier.

On the other hand, since the address discharge occurs efficiently when the interval between the scan electrode 207 and the address electrode 203 is narrow, the scan electrode 207 is more in the address electrode 203 than the common electrode 206 in this embodiment. It is placed close.

In addition, the address electrode 203 is preferably embedded by the dielectric layer 204.

Here, the dielectric layer 204 is disposed between the second partition wall portion 205b and the second substrate 202 and fills the address electrodes 203.

In addition, the dielectric layer 204 is formed as a dielectric that can induce charge while preventing cations or electrons from colliding with the address electrode 203 upon discharge and damaging the address electrode 203. PbO.B ₂ O ₃ .SiO ₂ and the like can be used.

In addition, in the present invention, the address electrode 203 may be unnecessary. This is because the discharge space in which the discharge starts, that is, the voltage for selecting the discharge cell 220 is determined by the proper arrangement of the sustain electrodes 206 and 207 even if the address electrode 203 is absent, for example, the two sustain electrodes 206 and the like. This is because 207 may be disposed to cross each other and applied to select the discharge cell 220 between the two electrodes 206 and 207.

In addition, since the common electrode 206 and the scan electrode 207 cause plasma discharge in the first partition 205a with the first partition 205a interposed therebetween, the common electrode 206 and the scan electrode during discharge. In order to prevent 207 from directly energizing and to prevent the charged particles from directly colliding with these electrodes 206 and 207 and damaging them, the first partition 205a induces charged particles to absorb wall charges. It is formed as a dielectric that can accumulate. As such a dielectric, PbO.B ₂ O ₃ .SiO ₂ may be used.

In the case of the second partition 205b, since the common electrode 206 and / or the scan electrode 207 may be embedded, the second partition 205b may be formed of a dielectric material.

In addition, the side surfaces of the first partition 205a are preferably covered by the MgO layers as the protective layer 209. Here, the protective layers 209 are not an essential component, but they prevent the charged particles from colliding with the first partition 205a formed of the dielectric and damaging the first partition 205a, and are secondary during discharge. It is responsible for emitting a large amount of electrons.

Meanwhile, in the present embodiment, the protective layer 209 is formed only on the side surface of the first partition wall portion 205a, but the present invention is not limited thereto, and this may be formed on the side surface of the second partition wall portion 205b or the like. Can be.

3 and 4, the phosphor layer 210 is applied on the side of the second partition 205b and on the dielectric layer 204 between the second partition 205b. .

Here, the phosphor layer 210 has a component that receives ultraviolet rays to generate visible light. The phosphor layer (R phosphor layer) formed in the red light emitting subpixel includes phosphors such as Y (V, P) O ₄ : Eu and the like. The phosphor layer (G phosphor layer) formed on the green light emitting subpixel includes phosphors such as Zn ₂ SiO ₄ : Mn, YBO ₃ : Tb, and the like. The phosphor layer (B phosphor layer) formed on the blue light emitting subpixel is BAM: Eu. Phosphors, and the like.

In addition, the discharge cells 220 are filled with discharge gases such as Ne, Xe, and the like and mixed gases thereof.

Hereinafter, a process of operating the plasma display panel 200 according to an exemplary embodiment of the present invention will be described.

First, when the plasma display panel 200 is operated, an address discharge occurs by applying an address voltage between the address electrode 203 and the scan electrode 207, and discharge cells 220 in which sustain discharge occurs as a result of the address discharge. ) Is selected.

Thereafter, when the sustain discharge voltage, which is an alternating current, is applied between the common electrode 206 and the scan electrode 207 of the selected discharge cell 220, the sustain discharge occurs between the common electrode 206 and the scan electrode 207.

In addition, ultraviolet rays are emitted while the energy level of the discharge gas excited by this sustain discharge is lowered. The ultraviolet rays excite the phosphor layer 210 applied in the discharge cell 220, and the energy level of the excited phosphor layer 210 is lowered to emit visible light, and the emitted visible light is used to implement an image. do.

6 is a plan view showing the structure of an electrode and a discharge cell in the plasma display panel having a stripe electrode and a delta discharge cell structure according to a second embodiment of the present invention, Figure 7 is a third embodiment of the present invention Fig. 1 is a plan view showing the structure of an electrode and a discharge cell in the plasma display panel having the stripe electrode and the delta discharge cell structure.

Here, the same reference numerals as in the above-described drawings indicate the same members.

The second and third embodiments of the present invention differ from the first embodiment in that the cross-sections of the discharge cells 220, 320 and 420 are octagonal in the first embodiment, whereas in the third embodiment they are hexagonal. In the fourth embodiment, it is called a rectangle.

On the other hand, the other configuration and operation of the plasma display panel except for the cross-sectional shape of the discharge cells (320, 420) is similar to the case of the first embodiment.

Here, unexplained reference numerals mean the following respectively.

303, 403: address electrode, 305a, 405a: first partition portion, 307, 407: scan electrode

According to the present invention, a plasma display panel having a novel stripe electrode and a delta discharge cell structure in which the reactive power consumption is greatly reduced can be provided.

In addition, according to the present invention, by forming the discharge cells constituting the unit pixel in a regular polygonal structure, there can be provided a plasma display panel having a novel stripe electrode and a delta discharge cell structure that greatly improves the discharge efficiency and easy pixel implementation have.

In addition, according to the present invention, a plasma display panel having a novel stripe electrode and a delta discharge cell structure having greatly improved design freedom by forming an electrode structure in a stripe shape can be provided.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

Claims (18)

A first substrate; A second substrate spaced apart from the first substrate to face the first substrate; Barrier ribs disposed between the first substrate and the second substrate and defining discharge cells which are spaces in which discharge occurs; A plurality of pairs of sustain electrodes including at least one common electrode and at least one scan electrode which extend in one direction along the partition walls and are spaced apart from each other and cause gas discharge in a discharge cell by interaction; ; R, G, B phosphor layer disposed in the discharge cell; And And a discharge gas charged in the discharge cell, And three discharge cells of the R, G, and B phosphor layers are configured to constitute a unit pixel having a triangular structure. The method of claim 1, And three discharge cells of the R, G, and B phosphor layers constitute a unit pixel having an inverted triangle structure, and the inverted triangle structure is disposed in parallel with the other inverted triangle structure in a horizontal direction and a vertical direction. The method of claim 1, And three discharge cells of the R, G, and B phosphor layers constitute a unit pixel having an equilateral triangle structure, and the equilateral triangle structure is disposed in parallel with a neighboring equilateral triangle structure in a horizontal direction and a vertical direction. The method of claim 1, And the common electrode or the scan electrode are alternately arranged to extend along the first partition within the first partition extending in one direction, and to alternately extend along the second partition within a second partition disposed parallel to the first partition. The method of claim 1, The common electrode or the scan electrode extends along the first partition wall in the first partition wall extending in one direction, and is not disposed in the second partition wall parallel to the first partition wall, and the third partition wall parallel to the second partition wall. Alternately arranged in the plasma display panel to extend along the third partition wall. The method of claim 1, And a partition wall surrounding each discharge cell of the R, G, and B phosphor layers has an octagonal shape. The method of claim 1, And a partition wall surrounding each of the discharge cells of the R, G, and B phosphor layers has a hexagonal shape. The method of claim 1, A plasma display panel having a quadrangular shape of a partition wall surrounding each discharge cell of the R, G, and B phosphor layers. The method of claim 1, The first substrate is a plasma display panel formed of a transparent material. The method of claim 1, The common electrode extends in one direction, and the scan electrode extends to intersect the common electrode. The method of claim 1, And a plurality of address electrodes extending in a direction crossing the direction in which the common electrode and the scan electrode extend. The method of claim 11, The scan electrode is disposed closer to the address electrode than the common electrode. The method of claim 11, A dielectric layer is disposed between the phosphor layer and the second substrate, and the address electrode is disposed in the dielectric layer. The method of claim 1, And a protective layer disposed to cover at least a portion of the partition wall. The method of claim 1, The partition wall includes a first partition wall portion positioned on the first substrate side and a second partition wall portion positioned on the second substrate side. The method of claim 15, And the first partition portion is a dielectric. The method of claim 15, And a common electrode disposed in the first partition portion, and the scan electrode disposed in the second partition portion. The method of claim 15, The common electrode and the scan electrode are disposed in the first partition portion, and the phosphor layer is disposed in a space defined by the second partition portion and the second substrate.

Images