KR100726642B1 - Plasma Display Panel and Method of Manufacturing thereof - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display panel and a method of manufacturing the same, and more particularly, to a plasma display panel having an improved structure of a rear panel including a partition and a method of manufacturing the same.

The present invention relates to a plasma including a front panel having a plurality of scan electrodes and a sustain electrode formed thereon and a rear panel having a plurality of horizontal partition walls and vertical partition walls partitioning discharge cells in a dielectric layer formed to cover the plurality of address electrodes on the rear glass. In the display panel, a plurality of horizontal partition walls are formed in the central portion of the horizontal partition wall grooves having a predetermined thickness and width in the entire longitudinal direction of the horizontal partition walls.

Plasma Display Panel, Address Electrode, Horizontal Bulkhead, Vertical Bulkhead, Groove

Description

Plasma Display Panel and Method for Manufacturing thereof

1 is a perspective view schematically showing the structure of a conventional plasma display panel.

2 is a process diagram sequentially illustrating a manufacturing process of a conventional plasma display rear panel;

3 is a cross-sectional view showing the structure of a rear panel of a conventional plasma display panel.

4 is a view showing an example occurring when a conventional plasma display front panel and a rear panel are bonded.

5 is a process chart sequentially showing a manufacturing process of the plasma display rear panel according to the present invention.

6 is a view showing the structure of a rear panel of the plasma display panel according to the present invention;

Figure 7 is a view for showing that noise is not generated as an example when the plasma display front panel and the rear panel is bonded according to the present invention.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display panel and a method of manufacturing the same, and more particularly, to a plasma display panel having an improved structure of a rear panel including a partition and a method of manufacturing the same.

In general, a plasma display panel is a partition wall formed between a front substrate and a rear substrate to form a unit cell, and each cell includes neon (Ne), helium (He), or a mixture of neon and helium (Ne + He) and An inert gas containing the same main discharge gas and a small amount of xenon is filled. When discharged by a high frequency voltage, the inert gas generates vacuum ultraviolet rays and emits phosphors formed between the partition walls to realize an image. Such a plasma display panel has a spotlight as a next generation display device because of its thin and light configuration.

1 is a perspective view schematically showing the structure of a conventional plasma display panel. As shown in FIG. 1, a plasma display panel includes a front substrate in which a plurality of sustain electrode pairs formed by pairing a scan electrode 102 and a sustain electrode 103 are formed on a front glass 101, which is a display surface on which an image is displayed. The rear substrate 110 having the plurality of address electrodes 113 arranged to intersect the plurality of sustain electrode pairs on the back glass 111 forming the back surface 100 and the rear surface is coupled in parallel with a predetermined distance therebetween. .

The front panel 100 is made of a scan electrode 102 and a sustain electrode 103, that is, a transparent electrode (a) formed of a transparent ITO material and a metal material to mutually discharge and maintain light emission of the cells in one discharge cell. The scan electrode 102 and the sustain electrode 103 provided as the bus electrode b are included in pairs. The scan electrode 102 and the sustain electrode 103 are covered by one or more upper dielectric layers 104 that limit the discharge current and insulate the electrode pairs, and to facilitate the discharge conditions on the upper dielectric layer 104 top surface. A protective layer 105 on which magnesium oxide (MgO) is deposited is formed.

The rear panel 110 is arranged such that a plurality of discharge spaces, that is, barrier ribs 112 of a stripe type (or well type) for forming discharge cells are maintained in parallel. In addition, a plurality of address electrodes 113 which perform address discharge to generate vacuum ultraviolet rays are arranged in parallel with the partition wall 112. On the upper side of the rear substrate 110, R, G, and B phosphors 114 which emit visible light for image display during address discharge are coated. A lower dielectric layer 115 is formed between the address electrode 113 and the phosphor 114 to protect the address electrode 113.

The conventional PDP having such a structure is largely formed through a glass substrate manufacturing process, a front panel manufacturing process, a rear panel manufacturing process, and an assembly process. In particular, the manufacturing process of the panel during the PDP manufacturing process is as follows.

First, the manufacturing process of the front panel includes a manufacturing process in which a scan electrode and a sustain electrode made of silver (Ag) are formed on the front substrate, and an upper dielectric layer which insulates the discharge current between the scan electrode and the sustain electrode and insulates the electrode pairs. In the manufacturing process to be formed, in order to facilitate the discharge conditions on the upper surface of the dielectric layer is subjected to a manufacturing process in which a protective layer formed by depositing magnesium oxide (Mgo) is formed.

In addition, the manufacturing process of the rear panel includes a manufacturing process in which an address electrode made of silver (Ag) is formed on the rear substrate, a manufacturing process in which a lower dielectric layer is formed to protect the address electrode, and a partition wall partitioning a discharge cell on an upper surface of the dielectric layer. A manufacturing process is formed, and a manufacturing process is performed in which a phosphor layer emitting visible light for displaying an image is formed between partition walls.

Here, the manufacturing process of the above-described plasma display rear panel will be described with reference to FIG. 2.

2 is a process diagram sequentially illustrating a manufacturing process of a conventional plasma display rear panel. As shown in FIG. 2, the back glass substrate is sequentially formed by the following process.

First, in step (a), the address electrode 222 having a predetermined width and height is formed on the upper rear glass 220, and in step (b), the dielectric layer 213b is formed on the address electrode 222.

Subsequently, in step (c), a barrier material 221 'layer is formed on the dielectric layer 213b, and in step (d), the barrier material 221' is formed. The photoresist 230 is coated on the top.

Subsequently, in step (e), the photo mask 232 having a predetermined pattern is formed on the photoresist 230, and light is irradiated to cure the photoresist 230. This process is called an exposure process.

Thereafter, after washing the uncured photoresist 230 through the developing process (f), etching is performed in step (g).

Subsequently, in step (h), the photoresist 230 is removed and dried, and then heated and fired at a temperature of 550 ° C. or higher to 600 ° C. or lower to be fired to prevent crosstalk between adjacent cells. 221 is formed.

Finally, in step (i), when the phosphor 223 is coated between the partition walls 221 and fired, the back glass substrate 220 is formed.

The structure of the rear panel of the plasma display sequentially formed as described above will be described in detail with reference to FIG. 3.

3 is a cross-sectional view illustrating a structure of a rear panel as one example of a conventional plasma display panel.

As shown in FIG. 3, an address electrode 313 is formed on an upper surface of a rear glass 320 of a conventional plasma display panel, and a lower dielectric layer 315 for protecting the address electrode 313 is addressed. It is formed to cover the electrode 313. In addition, a plurality of discharge spaces, that is, well-type partition walls 312 for forming discharge cells are arranged on the upper side surface of the lower dielectric layer 315 in parallel. Further, R, G, and B phosphors (not shown) for emitting visible light for image display during address discharge are applied between the partition 312 and the partition 312, that is, in the discharge space.

In the conventional plasma display rear panel formed as described above, the front panel 410 is formed on the partition wall 412 of the rear panel 420 so as to be bonded to the front panel. At this time, the front panel 410 and the rear panel 420, which are bonded to a predetermined sealing material, include a plurality of scan electrodes (not shown), sustain electrodes (not shown), dielectric layers (not shown), and protective layers (not shown). The front panel 410 is formed to be in contact with a predetermined surface of the upper part of the partition wall 41 of the rear panel 420, so that a vibration phenomenon occurs between the front panel 410 and the rear panel 420 when the plasma display device is driven. The problem is that noise occurs at the point.

Accordingly, it is impossible to provide clear listening to the viewers watching the plasma display panel, and thus there is a limit to improving the reliability of the product.

SUMMARY OF THE INVENTION In order to solve the above problems, an object of the present invention is to provide a plasma display panel and a method of manufacturing the same, which can minimize the occurrence of noise by improving the partition structure of the rear panel of the plasma display panel and, accordingly, improve the reliability of the product. It is done.

According to an aspect of the present invention, a plasma display panel includes: a front panel on which a plurality of scan electrodes and a sustain electrode are formed; A plasma display panel comprising a rear panel having a plurality of horizontal partition walls and a vertical partition wall partitioning discharge cells in a dielectric layer formed to cover a plurality of address electrodes on the rear glass, wherein the plurality of horizontal partition walls are horizontal partition walls above the horizontal partition walls. A groove having a predetermined thickness and width is formed in a portion or the entire region of the longitudinal direction of the.

The predetermined thickness may be larger than the thickness of the scan electrode or the sustain electrode.

In addition, the predetermined thickness is characterized by being 2 µm or more.

In addition, a predetermined width may be greater than a width of the scan electrode or the sustain electrode positioned on the horizontal partition wall.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

5 is a flowchart sequentially illustrating a manufacturing process of a plasma display rear panel according to the present invention. First, the manufacturing process of the plasma display rear panel according to the present invention is formed in the same manner as shown in FIG. However, in the plasma display rear panel according to the present invention, a groove having a predetermined thickness and width is further formed on the plurality of horizontal partition walls immediately after the plurality of horizontal partition walls and the vertical partition walls are formed. The process of sequentially forming the plasma display rear panel according to the present invention will be described in detail with reference to FIG. 5.

As shown in FIG. 5, the back glass substrate is sequentially formed by the following process.

First, in step (a), an address electrode 522 having a predetermined width and height is formed on the upper rear glass 520, and in step (b), a dielectric layer 513b is formed on the address electrode 522.

Thereafter, in step (c), a barrier material 521 'layer is formed on the dielectric layer 513b, and in step (d), the barrier material 521' is formed. The photoresist 530 is coated on the top.

Subsequently, in step (e), the photomask 532 on which the predetermined pattern is formed is placed on the photoresist 530 and irradiated with light to cure the photoresist 530. This process is called an exposure process.

Thereafter, after washing the unresisted photoresist 530 through (f) the developing process, etching is performed in step (g).

Subsequently, in step (h), the photoresist 530 is removed and dried, and then heated and fired at a temperature of 550 ° C. or higher to 600 ° C. or lower so as to prevent crosstalk between adjacent cells. 521 and the vertical partition wall 521 are formed. Here, the horizontal partition wall 521 of the plasma display rear panel according to the present invention is further formed with a groove having a predetermined thickness and width in the central portion of the upper horizontal partition wall 521.

Finally, in step (i), the phosphor 523 is coated between the horizontal partition wall 521 and the vertical partition wall 521, and the back glass substrate 520 is formed when the phosphor is fired.

The structure of the rear panel of the plasma display sequentially formed as described above is described in detail with reference to FIG. 6.

6 is a view showing the structure of a rear panel of the plasma display panel according to the present invention. First, the plasma display back panel according to the present invention is formed as shown in FIG. However, in the structure of the plasma display rear panel according to the present invention, grooves having a predetermined thickness and width are further formed in a part or the entirety of the longitudinal direction of the horizontal partition wall on the plurality of horizontal partition walls formed in the rear glass. Such a groove having a predetermined thickness and width formed on the horizontal partition wall has a scan electrode and a sustain electrode of the front panel described above, and a surface of the protruding portion of the surface of the upper dielectric layer and the protective layer formed therein enters and adheres to the rear panel. This is done. The structure of the plasma display rear panel according to the present invention will be described in more detail with reference to FIG. 6.

As illustrated in FIG. 6, in the rear panel of the plasma display panel according to the present invention, an address electrode 613 is formed on an upper surface of the rear glass 620, and a lower dielectric layer 615 for protecting the address electrode 613. It is formed to cover the address electrode 613. In addition, a well-type partition wall 612 for forming a plurality of discharge spaces, that is, discharge cells, is arranged on the upper side surface of the lower dielectric layer 615 in parallel.

Here, the partition wall 612 of the plasma display rear panel according to the present invention is provided with a horizontal partition wall 612a and a vertical partition wall 612b. In the manufacturing method of the plasma display panel, the horizontal bulkhead 612a may be formed in the partial or entire region of the horizontal partition wall 612a on the plurality of horizontal partition walls 612a formed on the rear glass 620 by using an etching method. The groove 617 is formed to have a predetermined thickness t and a width w.

More specifically, the thickness t of the groove 617 formed on the horizontal partition wall 612a described above is a scan electrode (not shown) and a sustain electrode (not shown) of a front panel (not shown) to be bonded later. It is formed larger than about 2 μm in thickness (not shown). In addition, the width w of the groove 617 described above is formed to be wider than the width of the electrode positioned on the horizontal partition wall 612a formed in the rear glass 620.

As shown in FIG. 7, the plasma display rear panel according to the present invention has a horizontal partition wall formed on the plurality of horizontal partition walls 712a formed on the rear glass 720. A groove 717 having a predetermined thickness (t in FIG. 6) and a width (w in FIG. 6) is formed in part or all of the longitudinal direction of the 712a. At this time, the side surface of the front panel where the scan electrode (not shown) and the sustain electrode (not shown), the upper dielectric layer (not shown), and the protective layer (not shown) are formed on the surface of the horizontal partition wall 712a of the rear panel. Since the front panel 710 is in contact with a predetermined surface of the partition wall 712 of the rear panel 720 because the front panel 710 enters the aforementioned groove 717 formed in the upper surface of the rear panel 720. When driving, vibrations are reduced on the partition walls 712 of the front panel 710 and the rear panel 720, and noise at the point of contact with each other is significantly reduced.

Accordingly, it is possible to provide clear listening to viewers watching the plasma display panel, thereby improving product reliability.

Those skilled in the art to which the present invention pertains will understand that the present invention can be implemented in other specific forms without changing the technical spirit or essential features. Therefore, the above-described embodiments are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the appended claims rather than the detailed 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 above, the present invention has the effect of minimizing the generation of noise by improving the partition structure of the rear panel, thereby improving the reliability of the product.

Claims (4)

A front panel on which a plurality of scan electrodes and sustain electrodes are formed; A plasma display panel comprising: a rear panel having a plurality of horizontal partition walls and vertical partition walls formed so as to partition discharge cells in a dielectric layer formed to cover a plurality of address electrodes on the rear glass; The plurality of horizontal partition walls Grooves having a predetermined thickness and width are formed in a portion or the entire area of the horizontal partition wall in the upper part of the horizontal partition wall. And the predetermined width is larger than a width of the scan electrode or the sustain electrode positioned on the horizontal partition wall. The method of claim 1, And said predetermined thickness is greater than the thickness of said scan electrode or said sustain electrode. The method of claim 1, The predetermined thickness is a plasma display panel, characterized in that more than 2㎛. delete

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