KR100708650B1 - Plasma display panel - Google Patents

Abstract

SUMMARY OF THE INVENTION An object of the present invention is to provide a plasma display panel in which the shape of a sealing member is uniformly formed, and whose structure is improved to reduce a difference between an area in contact with a front substrate and an area in contact with a rear substrate. In order to achieve the present invention, the present invention provides a plasma display panel including a display area for displaying an image in a space between a front substrate and a rear substrate, and a sealing member for sealing the outside of the display area, the peripheral area surrounding the display area. In the inside of the sealing member of the rear substrate, there is provided a plasma display panel characterized in that the rear inner guide groove for guiding the inner shape of the sealing member is formed.

Description

Plasma display panel {Plasma display panel}

1 is a front view illustrating a conventional plasma display panel and a sealing member provided therein;

2 is a front view illustrating a plasma display panel and a sealing member provided therein according to the first embodiment of the present invention;

3 is a perspective view illustrating part III of FIG. 2;

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

5 is a front view illustrating a plasma display panel and a sealing member provided therein according to a second embodiment of the present invention;

FIG. 6 is a perspective view illustrating part VI of FIG. 5;

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

8 is a front view illustrating a plasma display panel and a sealing member provided therein according to a third embodiment of the present invention.

FIG. 9 is a perspective view illustrating the inset portion of FIG. 8;

FIG. 10 is a perspective view illustrating the inset portion of FIG. 8. FIG.

Explanation of symbols on the main parts of the drawings

100,200,300: plasma display panel

120,220,320: front substrate 122,222,322: sustain electrode pair

130, 230, 330: rear substrate 132, 232, 332: address electrode

137,337: Rear inner guide groove 138,338: Rear outer guide groove

140,240,340: partition 145,245,345: phosphor layer

150,250,350: Seal member 227,327: Front inner guide groove

228,328: front outer guide groove C: light emitting cell

P: common area D: display area

S: surrounding area

The present invention relates to a plasma display panel, and more particularly, to a plasma display panel which displays an image by discharge of discharge gas disposed between a front substrate and a rear substrate.

Plasma display panels, which are recently attracting attention as replacing conventional cathode ray tube display devices, have a discharge voltage applied after a gas is sealed on two substrates coated with a plurality of electrodes. The phosphor formed in a predetermined pattern by the ultraviolet rays generated by the excitation is excited to obtain a desired image.

The plasma display panel may be classified into a direct current type and an alternating current type according to a discharge type. In the DC plasma display panel, the electrodes are exposed to the discharge space so that the movement of charged particles is made directly between the corresponding electrodes. In the AC plasma display panel, some or all of the electrodes are covered with a dielectric layer, and The discharge is performed by the electric field of the wall charge instead of the direct charge transfer.

As shown in FIG. 1, a conventional AC plasma display panel 10 includes a display area D in which an image is implemented, a peripheral area S in which an image is not implemented, and terminals of respective electrodes. Can be divided into a terminal area T disposed therein.

In this case, the common area P, which is an area where the front substrate 20 showing an image to the user and the rear substrate 30 coupled to each other, overlaps, is divided into a display area D and a peripheral area S. FIG. .

The display area D may be connected to a driving circuit for driving the address electrodes and the common and scan electrodes to drive the address electrode and the common and scan electrodes, so that an image may be realized by a signal of the driving circuit. In contrast, the peripheral area S is an area where an image cannot be implemented.

On the front substrate 20, a common electrode and a scan electrode are typically arranged in pairs for each light emitting cell, and on one side of the back substrate 30 facing the surface on which the common electrode and the scan electrode are disposed, an address electrode is provided. The electrodes are arranged to intersect with the electrodes of the front substrate.

The common electrode and the scan electrode on the front substrate 20 are made of transparent electrodes made of transparent electrodes usually made of indium tin oxide (ITO), and formed of a metal material, for example, on a lower surface of the transparent electrode to reduce line resistance. It is made of a bus electrode formed with a narrow width.

The first dielectric layer and the second dielectric layer are formed on each side of the front substrate 20 provided with the common electrode and the scan electrode and the rear substrate 30 provided with the address electrode, respectively.

A protective film is formed on the lower surface of the first dielectric layer. On the second dielectric layer, barrier ribs are formed to maintain the discharge distance and to prevent electrical and optical crosstalk between the light emitting cells. Red, green, and blue phosphors are coated on both side surfaces of the partition wall and on an upper surface of the second dielectric layer on which the partition wall is not formed.

In this case, the sealing member 50 is formed in the peripheral region (S), the front substrate and the rear substrate is sealed. The sealing member 50 is usually made of a frit.

In the plasma display panel, a pair of sustain electrodes, a first dielectric layer, and a protective film are formed on the front substrate 20, and an address electrode, a second dielectric layer, a partition wall, and a phosphor layer are formed on the rear substrate, and then the front substrate 20 is formed. ) And the rear substrate 30, the panel is completed by sealing, exhaust, gas encapsulation.

Among them, the method of sealing the front substrate 20 and the rear substrate 30, the sealing member 50 is applied along the edge of the upper surface of the rear substrate 30, and the sealing and the phosphor layer through the drying process After removing the organic solvent and the organic resin in the member 50, the front substrate 20 and the rear substrate 30 are sealed.

However, when the frit is applied by the above process, the frit naturally spreads on the back substrate due to the rheological properties of the frit material, which usually exhibits a solid and liquid intermediate property during sintering as glass. This happens. That is, a portion of the frit adhered to the upper side flows downward and spreads, so that after the front substrate and the rear substrate are sealed, the width of the frit that is in contact with the front substrate is smaller than that of the frit. In addition, an end portion of the frit in contact with the front substrate is spread along the front substrate when sealed, and an end portion of the frit in contact with the rear substrate is spread along the rear substrate when sealed.

As a result, the adhesive force adhered to the rear substrate side and the adhesive force adhered to the front substrate side are different, and noise and vibration are generated when the panel is driven. In addition, the shape of the sealing member does not become constant after sealing, so that the adhesive force at one part is different from the other part, resulting in noise of the panel. This consequently reduces the sealing force of the overall plasma display panel.

Furthermore, if the shape of the sealing member is not constant and winding after sealing, when the sealing member is observed from the outside through the transparent front substrate, the appearance is not good.

The present invention is to solve various problems including the above problems, the shape of the sealing member is formed uniformly, the structure is improved to reduce the difference between the area in contact with the front substrate and the area in contact with the rear substrate It is an object to provide a plasma display panel.

In order to achieve the above object, according to a first embodiment of the present invention, a display area for displaying an image in the space between the front substrate and the rear substrate, and a sealing member for sealing the outside of the display region is formed A plasma display panel having a peripheral area surrounding the display area, wherein the inside of the sealing member of the rear substrate is formed with a rear inner guide groove for guiding the inner shape of the sealing member. to provide.

In this case, the rear inner guide groove is preferably arranged to contact the inner end of the sealing member in the peripheral region.

In addition, it is preferable that a rear outer guide groove is formed outside the sealing member of the rear substrate to guide the outer shape of the sealing member.

Meanwhile, in the display area, light emitting cells partitioned by a partition between the front substrate and the rear substrate and having a phosphor layer disposed therein are disposed, and below the front substrate, the light emitting cells extend in the left and right directions of the light emitting cells. The sustain electrode pairs are disposed, the sustain electrode pairs are covered by a first dielectric layer, the first dielectric layer is covered by a protective film, and an address extending in the vertical direction of the light emitting cells above the rear substrate. Electrodes are disposed, and the address electrodes may be covered by the second dielectric layer. In this case, the rear inner guide groove is preferably formed up and down at the outside of the outermost address electrodes of the rear substrate.

On the other hand, the plasma display panel according to the second embodiment of the present invention, a display area for displaying an image in the space between the front substrate and the rear substrate, and a sealing member for sealing the outside of the display area is formed and the display area is In the plasma display panel having a peripheral area surrounding, the inside of the sealing member of the front substrate, characterized in that the front inner guide groove for guiding the inner shape of the sealing member is formed.

In this case, the front inner guide groove is preferably disposed to contact the inner end of the sealing member in the peripheral region.

In addition, a front outer guide groove may be formed outside the sealing member of the front substrate to guide the outer shape of the sealing member.

On the other hand, according to the third embodiment of the present invention, a display area for displaying an image and a sealing member for sealing the outside of the display area is formed in the space between the front substrate and the rear substrate and surrounding the display area. In the plasma display panel having a plasma display panel, characterized in that the front inner guide groove and the rear inner guide groove for guiding the inner shape of the sealing member is formed inside the sealing member of the front substrate and the rear substrate, respectively. to provide.

In this case, the front and rear inner guide grooves are preferably arranged to contact the inner end of the sealing member in the peripheral area.

In addition, a front outer guide groove and a rear outer guide groove for guiding the outer shape of the sealing member may be formed outside the sealing member of the front substrate and the rear substrate.

The sealing member may be a frit.

Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Referring to FIG. 2, the plasma display panel 100 according to the first embodiment of the present invention includes a front substrate 120 and a rear substrate 130.

The front substrate 120 and the rear substrate 130 are sealed by the sealing member 150, and a plurality of electrodes are excited by a phosphor formed in a predetermined pattern by ultraviolet rays generated by the discharge voltage, thereby passing through the front substrate. An image appears.

The rear substrate is formed with a sealing member 150. The sealing member 150 is disposed in the peripheral area S and is disposed to surround the display area D. In the case where the sealing member is a frit, it is more preferable in the present invention, since the frit is usually made of a glass component such as PbO, SiO 2, B 2 O 3, so that the frit melts at the time of application and has intermediate properties between solid and fluid This is because the phenomenon of flowing down to the rear substrate occurs.

Here, the peripheral area S refers to an area excluding the display area D where an image is displayed in the common area P where the front substrate 120 and the rear substrate 130 overlap. In this case, the front substrate 120 and the rear substrate 130 may include a terminal region T in which terminals of a plurality of electrodes are formed in addition to the common region P. Referring to FIG.

Inside the sealing member 150 of the rear substrate 130, a rear inner guide groove 137 for guiding the inner shape of the sealing member 150 is formed. The rear inner guide groove 137 serves as a guide of the sealing member 150 and at the same time serves to prevent the sealing member 150 from flowing over the sealing member 150, so that the sealing member 150 has a predetermined shape. .

The sealing member 150 acts as a contaminant in the light emitting cell, thereby causing an erroneous discharge to occur in the light emitting cell disposed near the peripheral area S. Recently, the display area D is enlarged. Accordingly, the gap G between the forming area of the sealing member 150 and the display area D may be reduced, so that the sealing member may flow into the display area. Therefore, since the rear inner guide groove 137 is formed, the sealing member 150 is prevented from spreading toward the display area D of the rear substrate.

In this case, the rear inner guide groove 137 is preferably disposed to be in contact with the inner end of the sealing member 150 in the peripheral area S, thereby preventing the sealing member from expanding into the display area. have.

In this case, one example of the structure of the front substrate 120 and the rear substrate 130 with reference to Figures 3 and 4, the partition wall between the front substrate 120 and the rear substrate 130 which is usually a glass substrate. 140 are disposed. The light emitting cell C is partitioned by the partition walls 140.

A plurality of sustain electrode pairs 122 extending in a predetermined pattern is disposed on the lower side of the front substrate 120 and continuously disposed in one direction, and continuously arranged in a different direction on the upper side of the rear substrate 130. The address electrodes 132 extending over the light emitting cells C are disposed.

The address electrode 132 has a predetermined pattern, for example, a stripe type or a serpentine pattern, and one or a plurality of address electrodes 132 are formed in each light emitting cell C. The address electrode 124 is usually formed together with the scan electrode 124. Generates a discharge.

The address electrode 132 is covered by the second dielectric layer 135. Here, the second dielectric layer 135 may be formed on the top surface of the rear substrate 130. In this case, the address electrode 132 is formed on the top surface of the rear substrate 130 in a predetermined pattern, and the address electrode ( The second dielectric layer 135 is formed to cover the 132.

The sustain electrode pairs 122 formed on the lower side of the front substrate 120 generally include a common electrode 123 and a scan electrode 124. The scan electrode 124 together with the address electrode 132 generates an address discharge. The common electrode 123 together with the scan electrode 124 generates a sustain discharge. The sustain electrode pairs 122 are covered by the first dielectric layer 126.

The sustain electrode pairs 122 may be formed on the bottom surface of the front substrate 120. In this case, it is preferable that the sustain electrode pairs 122 are disposed on the bottom surface of the front substrate 120, and the sustain electrode pairs 122 cover the first dielectric layer 125.

In this case, the common electrode 123 is formed on the lower surface of the front substrate 120 and the lower surface of the transparent common electrode 123a, respectively, and is formed by the resistance of the transparent common electrode during discharge. The bus common electrode 123b may be provided to reduce the voltage drop.

In addition, the scanning electrode 124 is formed on the lower surface of the front substrate 120 and the lower surface of the transparent scanning electrode, respectively, to reduce the voltage drop due to the resistance of the transparent scanning electrode during discharge. The bus scan electrode 124b may be provided. However, the present invention is not limited thereto, and the bus electrode 123 and the scan electrode 124 may be composed of only the transparent electrodes 123a and 124a or may be composed of only the bus electrodes 123b and 124b.

The first dielectric layer 125 is preferably covered with a protective film 126. The passivation layer 126 protects the first dielectric layer 125 from sputtering of ions, and has a characteristic of having a relatively high secondary electron generation coefficient when low energy ions hit the surface during discharge, thereby driving the plasma display panel 100. And it lowers the holding voltage. In this case, the protective film 126 is preferably formed of a film of MgO material.

A discharge gas is formed in the light emitting cell between the front substrate 120 and the rear substrate 130. As the discharge gas, a Penning mixed gas is mainly used. He, Ne, Ar, or a mixed gas thereof is used to form a buffer gas, and a source of vacuum ultraviolet light that emits the phosphor layer 145. A small amount of Xe gas is used as).

Partition walls 140 are disposed between the front substrate 120 and the rear substrate 130. The partition walls 140 are formed between the light emitting cells C to partition the light emitting cells, and prevent the charged particles from crosstalk between the light emitting cells C.

Here, the sustain electrode pairs 122 are typically disposed on the left and right sides of the front substrate 120, and the address electrodes 132 are disposed on the top and bottom of the rear substrate 130. In this case, the rear inner guide groove 137 is preferably formed up and down outside the outermost address electrodes 132_a of the rear substrate, which is formed at the upper and lower ends of the rear substrate. A terminal is formed, and when the rear inner guide groove 137 is formed on the rear substrate, the rear inner guide is disposed on the upper end and the lower end of the rear substrate to prevent the address electrodes from being cut off by the groove. This is because the groove 137 should not be formed across the left and right.

However, FIGS. 3 and 4 illustrate one embodiment of the front substrate 120 and the rear substrate 130 according to the present invention, and the present invention is not limited thereto. If there is no risk, the inner guide groove 137 may be formed to surround the edge of the rear substrate 130.

2 to 5, the plasma display panel 100 preferably includes a rear outer guide groove 138 along with a rear inner guide groove 137. The rear outer guide groove 138 guides the outer shape of the sealing member 150. As a result, the rear inner guide groove 137 prevents the sealing member 150 from flowing down to the inside of the rear substrate 130, and the rear member of the sealing member 150 flows out of the rear substrate. As a result, the difference between the width of the sealing member 150 bonded to the rear substrate 130 and the width of the front substrate is reduced, resulting in a more uniform adhesive force.

On the other hand, the plasma display panel 200 according to the second embodiment of the present invention, as shown in Figure 5, the display area for displaying an image in the space between the front substrate 220 and the rear substrate 230 ( D) and a sealing member 250 which seals the outside of the display area D, and a peripheral area S surrounding the display area D, the inside of the sealing member of the front substrate. The front inner guide groove 227 is formed to guide the inner shape of the sealing member. That is, the inner guide groove 227 is formed on the front substrate 220 to prevent the sealing member 250 from overflowing to the display area on the front substrate 220 and at the outside through the transparent front substrate 220. When visually observed at the eye, the taste is excellent. Here, the peripheral area S refers to an area excluding the display area D in which an image is displayed in the common area P where the front substrate 220 and the rear substrate 230 overlap. In this case, the front inner guide groove 227 is preferably disposed to contact the inner end of the sealing member 250 in the peripheral region (S).

In addition, the plasma display panel 200 according to the second embodiment of the present invention preferably includes a front outer guide groove 228 along with a front inner guide groove 227. The front outer guide groove 228 guides the outer shape of the sealing member 250. As a result, the front inner guide groove 227 prevents the sealing member 250 from flowing down into the front substrate 220, and the flowing down of the sealing member 250 to the outside of the front substrate is the front outer guide groove. As a result, the sealing member 250 which comes into contact with the front substrate 220 has a constant thickness, thereby resulting in a uniform adhesive force with the front substrate 220.

6 and 7, the display area D is partitioned by the partition wall 240 between the front substrate 220 and the rear substrate 230, and a phosphor layer 245 is formed therein. Light emitting cells C disposed on the substrate are disposed, and below the front substrate 220, sustain electrode pairs 222 extending in the left and right directions of the light emitting cells C are disposed, and the sustain electrode pair ( The 222 may be covered by the first dielectric layer 225, and the first dielectric layer 225 may be covered by the passivation layer 226. In this case, the bus electrode 223 and the scan electrode 224 constituting the sustain electrode pair 222 in one light emitting cell C may be composed of transparent electrodes 223a and 224a and bus electrodes 223b and 224b. have.

In addition, above the rear substrate 230, address electrodes 232 extending in the vertical direction of the light emitting cells C are disposed, and the address electrodes 232 are covered by the second dielectric layer 235. Can be.

In this case, the front inner guide groove 237 is preferably formed in the left and right directions at the outer side of the outermost sustain electrode 224_a of the front substrate 220. 6 and 7 illustrate one embodiment of the front substrate 220 and the rear substrate 230 according to the present invention, but the present invention is not limited thereto. If there is no risk, the front inner guide groove 227 may be formed to surround the edge of the front substrate 220.

 A plasma display panel 300 according to a third embodiment of the present invention is illustrated in FIGS. 8 to 10. Hereinafter, differences from the plasma display panels 100 and 200 according to the first and second embodiments of the present invention will be described.

In the plasma display panel 300 according to the third exemplary embodiment of the present invention, an inner shape of the sealing member 350 is guided inside the sealing member 350 of the front substrate 320 and the rear substrate 330. The front inner guide groove 327 and the rear inner guide groove 337 are formed. As a result, the rear inner guide groove 337 melts at the time of application of the sealing member 350 to have a solid and fluid intermediate property, and flows down to the rear substrate 330 to the display area D of the rear substrate 330. At the same time, the front inner guide groove 327 prevents the sealing member 350 from flowing into the display area D of the front substrate 320 and is visually seen from the outside through the transparent front substrate 220. In observation, it should be excellent in aesthetic sense.

In this case, the front and rear inner guide grooves 327 and 337 are preferably arranged to contact the inner end of the sealing member 350 in the peripheral region (S).

In addition, outside the sealing member 350 of the front substrate 320 and the rear substrate 330, the front outer guide groove 328 and the rear outer guide groove 338 for guiding the outer shape of the sealing member 350. In this case, the sealing member 350 is prevented from flowing down to the outside of the front and rear substrates 320 and 330 by the front and rear outer guide grooves 328 and 338. In addition, the sealing member 350 in contact with the rear substrates 320 and 330 has a predetermined thickness, thereby having uniform adhesive strength with the front and rear substrates 320 and 330.

Meanwhile, as shown in FIGS. 9 and 10, the display area D is partitioned by the partition wall 340 between the front substrate 320 and the rear substrate 330, and the phosphor layer 345 is formed therein. Light emitting cells C disposed on the substrate are disposed, and below the front substrate 320, sustain electrode pairs 322 extending in the left and right directions of the light emitting cells C are disposed, and the sustain electrode pairs ( 322 may be covered by the first dielectric layer 325, and the first dielectric layer 325 may be covered by the passivation layer 326. In this case, the bus electrode 323 and the scan electrode 324 constituting the sustain electrode pair 323 in one light emitting cell C may be composed of transparent electrodes 323a and 324a and bus electrodes 323b and 324b. have.

In addition, above the rear substrate 330, address electrodes 333 extending in the vertical direction of the light emitting cells C are disposed, and the address electrodes 333 are covered by the second dielectric layer 335. Can be.

In this case, the front inner guide groove 327 is formed to the left and right outside the outermost sustain electrode 322_a of the front substrate 320, and the rear inner guide groove 337 is the rear substrate ( The uppermost address electrode 332_a disposed on the upper portion 330 may be formed up and down. However, FIGS. 9 and 10 illustrate one embodiment of the front substrate 320 and the rear substrate 330 according to the present invention, and the present invention is not limited thereto. If there is no risk, the front and rear inner guide grooves 327 and 337 may be formed to surround the edges of the front and rear substrates 320 and 330.

According to the present invention having the above configuration, the sealing member guide portion can prevent the sealing member from flowing down to the inside of the rear substrate, it is possible to prevent erroneous discharge in the display area.

In addition, since the sealing member contacts the front substrate and the rear substrate with a uniform area, it is possible to prevent a poor adhesion between the front substrate and the rear substrate, and to prevent vibration and noise from being generated in the plasma display panel due to poor adhesion. have.

In addition, since the sealing member is formed at regular intervals, the appearance is excellent in appearance.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and any person skilled in the art to which the present invention pertains may have various modifications and equivalent other embodiments. Will understand. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

Claims (16)

A plasma display panel having a display area for displaying an image in a space between a front substrate and a rear substrate, and a sealing member for sealing the outside of the display area, the peripheral area surrounding the display area. A rear inner guide groove formed inside the sealing member of the rear substrate so as to guide the inner shape of the sealing member; And a rear outer guide groove formed on an outer side of the sealing member of the rear substrate to guide the outer shape of the sealing member. The method of claim 1, And the rear inner guide groove is disposed to contact the inner end of the sealing member in a peripheral area. delete The method of claim 1, In the display area, light emitting cells are partitioned by partition walls between the front substrate and the rear substrate and the phosphor layer is disposed therein. Under the front substrate, sustain electrode pairs extending in the left and right directions of the light emitting cells are disposed, the sustain electrode pairs are covered by a first dielectric layer, and the first dielectric layer is covered by a protective film. And an address electrode extending in the vertical direction of the light emitting cells above the rear substrate, wherein the address electrodes are covered by a second dielectric layer. The method of claim 4, wherein And the rear inner guide groove is formed up and down at the outermost edges of the outermost address electrodes of the rear substrate. A plasma display panel having a display area for displaying an image in a space between a front substrate and a rear substrate, and a sealing member for sealing the outside of the display area, the peripheral area surrounding the display area. A front inner guide groove formed inside the sealing member of the front substrate to guide the inner shape of the sealing member; And a front outer guide groove formed on an outer side of the sealing member of the front substrate to guide the outer shape of the sealing member. The method of claim 6, And the front inner guide groove is disposed to contact the inner end of the sealing member in a peripheral area. delete The method of claim 6, In the display area, light emitting cells are partitioned by partition walls between the front substrate and the rear substrate and the phosphor layer is disposed therein. Under the front substrate, sustain electrode pairs extending in the left and right directions of the light emitting cells are disposed, the sustain electrode pairs are covered by a first dielectric layer, and the first dielectric layer is covered by a protective film. And an address electrode extending in the vertical direction of the light emitting cells above the rear substrate, wherein the address electrodes are covered by a second dielectric layer. The method of claim 9, And the front inner guide groove is formed in a left and right direction at an outer side of the outermost sustain electrodes of the front substrate. A plasma display panel having a display area for displaying an image in a space between a front substrate and a rear substrate, and a sealing member for sealing the outside of the display area, the peripheral area surrounding the display area. A front inner guide groove and a rear inner guide groove respectively formed inside the sealing member of the front substrate and the rear substrate to guide the inner shape of the sealing member; And a front outer guide groove and a rear outer guide groove respectively formed on the outside of the sealing member of the front substrate and the rear substrate to guide the outer shape of the sealing member. The method of claim 11, The front and rear inner guide grooves are disposed in contact with the inner end of the sealing member in the peripheral area. delete The method of claim 11, In the display area, light emitting cells are partitioned by partition walls between the front substrate and the rear substrate and the phosphor layer is disposed therein. Under the front substrate, sustain electrode pairs extending in the left and right directions of the light emitting cells are disposed, the sustain electrode pairs are covered by a first dielectric layer, and the first dielectric layer is covered by a protective film. And an address electrode extending in the vertical direction of the light emitting cells above the rear substrate, wherein the address electrodes are covered by a second dielectric layer. The method of claim 14, The front inner guide groove is formed from left to right at the outer side of the outermost sustaining electrode of the front substrate, And the rear inner guide groove is formed up and down at the outermost edges of the outermost address electrodes of the rear substrate. The method according to any one of claims 1, 2, 4-7, 9-9, 14 or 15, And the sealing member is a frit.

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