KR20060131566A - Plasma display panel - Google Patents

Abstract

A plasma display panel is provided to compensate color purity of a fluorescent layer and to extend life time of the fluorescent layer by developing a barrier structure of a panel. A plasma display panel comprises plurality of address electrodes, a dielectric layer, and a plurality of barrier ribs(721). The plurality of address electrodes are formed on a glass(720). The dielectric layer is formed to cover the plurality of address electrodes. The plurality of barrier ribs are formed to divide a discharge cell located on the dielectric layer. At least one of the plurality of barrier ribs is formed in a non-effective screen region. At a plasma display bare panel, a predetermined pattern mask is formed in the non-effective screen region by using pattern device for the barrier rib. The edge of the barrier rib which is located in the non-effective screen region is thicker than any other portion of the barrier. Each edges of the plurality of barrier ribs are separated from an edge of the adjacent barrier.

Description

Plasma Display Panel

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

2 is a flowchart sequentially illustrating a method of manufacturing a conventional plasma display panel.

3 is a process diagram sequentially illustrating a manufacturing process of a rear panel as one example of a conventional plasma display panel;

4A to 4D are views for illustrating a process of forming a partition wall by a sanding method, which is one example of a manufacturing process of the rear panel shown in FIG.

5 is a flowchart sequentially illustrating a method of manufacturing a plasma display panel as a first embodiment according to the present invention.

6 is a process diagram sequentially illustrating a manufacturing process of a rear panel as one example of a plasma display panel according to the present invention;

7A to 7D are views for illustrating a process in which a partition, which is one example of a rear panel manufacturing process illustrated in FIG. 6, is formed by a sanding method.

8 is a flowchart sequentially illustrating a method of manufacturing a plasma display panel as a second embodiment according to the present invention.

9 is a process diagram sequentially illustrating a manufacturing process of a rear panel as another example of the plasma display panel according to the present invention;

10A to 10D are views for illustrating a process in which a partition, which is another example of the rear panel manufacturing process illustrated in FIG. 9, is formed by a sanding method;

The present invention relates to a plasma display panel, and more particularly, to a plasma display panel having an improved structure of a partition wall formed on a rear panel.

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 on which the plurality of address electrodes 113 are arranged so as to intersect the plurality of sustain electrode pairs on the back glass 111 constituting the back surface 100 and the rear surface is coupled in parallel with a predetermined distance therebetween. do.

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.

As such, after the front panel manufacturing process and the rear panel manufacturing process, the product of the plasma display panel is completed through the sealing process for bonding the front panel and the rear panel. Here, the process of manufacturing the front panel and the rear panel will be described in more detail with reference to FIG. 2.

2 is a flowchart sequentially illustrating a method of manufacturing a conventional plasma display panel.

As shown in FIG. 2, a conventional method of manufacturing a plasma display panel includes an assembly process including a front panel manufacturing process listed on the left side of FIG. 2, a rear panel manufacturing process listed on the right side, and a sealing process listed below. .

First, a front panel manufacturing process listed on the left side of FIG. 2 will be described.

In the front panel, first, a front glass is prepared (100), and a plurality of sustain electrode pairs are formed on the front glass (110). Thereafter, an upper dielectric layer is formed on the sustain electrode pair 120, and a protective film made of MgO material for protecting the sustain electrode pair is formed 130 on the upper dielectric layer.

On the other hand, the rear panel looks at the rear panel manufacturing process listed on the right side of Figure 2 as follows.

Like the front panel, the rear panel prepares the rear glass (200), and a plurality of address electrodes are formed on the rear glass so as to face and cross the sustain electrode pair formed on the front panel (210). Thereafter, a lower dielectric layer is formed to cover the address electrode (220), a barrier rib is formed on the upper surface of the lower dielectric layer (230), and a fluorescent layer is formed in the discharge space between the barrier ribs (240).

The front panel and the rear panel manufactured as described above are bonded to each other (300) to form a plasma display panel (400).

Here, in the above-described method of manufacturing a plasma display panel, one example will be described in more detail with reference to FIG. 3 below.

3 is a process diagram sequentially illustrating a manufacturing process of a rear panel as one example of a conventional plasma display panel.

As shown in FIG. 3, the conventional back glass substrate is sequentially formed by the following process.

First, in step (a), an address electrode 322 having a predetermined width and height is formed on the rear glass 320, and in step (b), a dielectric layer 313b is formed on the address electrode 322.

Subsequently, in step (c), a partition wall 321 is formed on the dielectric layer 313b to partition discharge cells. In step (d), the phosphor layer 323 is formed in the discharge space between the partition walls 321 described above. When applied and fired, the back glass substrate 320 is formed.

Here, a process of forming the partition wall as one example of the above-described rear panel manufacturing process will be described in more detail with reference to FIGS. 4A to 4D.

4A to 4D are diagrams for illustrating a process of forming a partition wall, which is one example of a manufacturing process of the rear panel illustrated in FIG. 3, by a sanding method. First, in the conventional rear panel, a plurality of address electrodes (not shown) are formed on the rear glass (not shown), and a dielectric layer (not shown) is formed to cover the aforementioned address electrodes (not shown).

Thereafter, as illustrated in FIG. 4A, the discharge cells are partitioned on the effective screen A on the rear glass 420 including the dielectric layer (not shown), and cross-talk between adjacent cells is prevented. In order to form a predetermined pattern mask 430 to prepare a plurality of partitions (not shown).

Thereafter, as shown in FIG. 4B, by using the predetermined barrier pattern apparatus 440 including the barrier rib 421a, the aforementioned barrier rib 421a is sanded to the predetermined pattern mask 430. As illustrated in FIG. 4C, a plurality of partitions 421 are formed on the effective screen A on the rear glass 420.

However, as shown in FIG. 4D, the partition wall 421 formed by the predetermined pattern mask 430 using the conventional predetermined partition pattern apparatus 440 is partitioned more than the central portion P ₂ of the partition wall 421. A collapse phenomenon occurs at the end portion P ₁ of 421.

In order to solve the above problems, the present invention improves the barrier rib structure of the rear panel of the plasma display panel to prevent the collapse of the barrier rib, thereby compensating the color purity of the phosphor layer and extending the life of the phosphor layer. It aims to provide.

According to an aspect of the present invention, there is provided a plasma display panel including: a plurality of address electrodes formed on glass; A dielectric layer formed to cover the plurality of address electrodes and a plurality of barrier ribs formed to partition discharge cells on the dielectric layer, wherein at least one of the plurality of barrier ribs is formed in the ineffective screen region and is formed in the ineffective screen region An end portion of the partition wall is characterized in that the plasma display panel is thicker than the other portion of the partition wall.

In addition, the end portion between the adjacent partition wall is characterized in that spaced apart.

In addition, the length of the at least one partition is different from the rest.

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

<First Embodiment>

FIG. 5 is a flowchart sequentially illustrating a method of manufacturing a plasma display panel as a first embodiment according to the present invention. First, the manufacturing method of the plasma display panel according to the present invention is formed in the same manner as shown in FIG. However, the manufacturing method of the plasma display panel according to the present invention forms a partition formed on the upper side of the rear glass up to the non-effective screen, and forms an end portion of the partition formed on the non-effective screen more thickly than the center portion. Such a manufacturing method of the plasma display panel according to the present invention is an assembly process including a front panel manufacturing process listed on the left side of FIG. 5, a rear panel manufacturing process listed on the right side, and a sealing process listed on the lower side, as shown in FIG. 2. It includes. Therefore, the descriptions of the front panel manufacturing process and the rear panel manufacturing process and the assembly process in which the front panel and the rear panel are attached are the same as those described above with reference to FIG.

Here, in the manufacturing method of the plasma display panel according to the present invention, as an example, the manufacturing process of the rear panel will be described in more detail with reference to FIG. 6.

6 is a flowchart sequentially illustrating a manufacturing process of a rear panel as one example of a plasma display panel according to the present invention. First, the manufacturing process of the plasma display rear panel according to the present invention is formed through the same sequential process as shown in FIG. However, the partition wall of the plasma display rear panel according to the present invention is formed on the ineffective screen to prevent the partition wall from falling down.

At this time, the remaining steps other than the partition wall of the manufacturing process for forming the plasma display back panel according to the present invention will be omitted below because the same manufacturing process as shown in FIG.

Here, the process of forming the partition wall as one example of the above-described manufacturing process of the plasma display rear panel according to the present invention will be described with reference to FIGS. 7A to 7D.

7A to 7D are views for illustrating a process of forming a partition wall, which is one example of a manufacturing process of the rear panel illustrated in FIG. 6, by a sanding method. First, the process of forming the partition wall of the plasma display rear panel according to the present invention is subjected to the same process as shown in Figures 4a to 4d. However, the partition wall of the plasma display rear panel according to the present invention is formed even on the invalid screen, and the end of the partition wall formed on the invalid screen is thicker than the center portion. Further, end portions between the partition walls are formed to be spaced apart from each other, and the lengths of the partition walls formed in the longitudinal direction of the partition wall including the end portions between the partition walls are formed to be equal to each other. Such a process of forming the partition wall, which is one example of the plasma display rear panel according to the present invention by a sanding method, will be described in more detail with reference to FIGS. 7A to 7D.

As shown in FIGS. 7A to 7D, first, a rear panel according to the present invention has a plurality of address electrodes (not shown) formed on an upper portion of a rear glass (not shown), and covers the above-described address electrodes (not shown). A dielectric layer (not shown) is formed.

Subsequently, as illustrated in FIG. 7A, the discharge cells are partitioned to an invalid screen B on the upper side of the rear glass 720 including the dielectric layer (not shown), and cross-talk between adjacent cells is prevented. In order to form a predetermined pattern mask 730 to prepare a plurality of partitions (not shown).

Here, the above-described predetermined pattern mask 730 is formed even on the invalid screen B, and the end of the predetermined pattern mask 730 formed on the invalid screen B is formed to be thicker than other portions.

In addition, the ends between the predetermined pattern masks 730 are formed to be spaced apart from each other, and the length L ₁ between the predetermined pattern masks 730 formed in the longitudinal direction of the predetermined pattern mask 730 including the aforementioned ends is It is formed to be the same as each other.

Subsequently, by sanding the aforementioned partition wall material 721a to the predetermined pattern mask 730 using the predetermined partition pattern device 740 including the partition wall material 721a as shown in FIG. 7B, As illustrated in FIG. 7C, a plurality of partition walls 721 are formed on the ineffective screen B on the rear glass 720.

The plasma display rear panel according to the present invention formed as described above has a predetermined pattern mask so as to form a thick end portion P ₃ of the partition 721 using a predetermined partition pattern device 740 as shown in FIG. 7D. 730 is formed even on the ineffective screen B on the rear glass 720.

Therefore, the partition wall 721 formed on the rear glass 720 has the partition wall material 721a sanded on the predetermined pattern mask 730 in the moving direction a to b of the predetermined partition wall pattern device 740. Although formed by, the end portion P ₃ of the partition wall 721 is formed to be thick on the ineffective screen (B) of the rear glass 720, so the end portion P ₃ and the central portion (P ₄ ) of the partition wall 721 ), The bonding force between the two is stronger so that the collapse phenomenon does not occur at the end portion P ₃ of the partition 721.

Accordingly, since fragments of the partition wall 721 are not generated and do not damage the phosphor layer (not shown) of the rear glass 720, color purity of the phosphor layer can be compensated for during plasma discharge, and the life of the phosphor layer is extended. You can do it.

On the other hand, by improving the structure of the partition wall end portion of the plasma display rear panel according to the present invention it is possible to further strengthen the binding force of the partition end and the center portion, another example of the present invention is the partition structure of the plasma display back panel Looking at it as shown in FIG.

Second Embodiment

8 is a flowchart sequentially illustrating a method of manufacturing a plasma display panel as a second embodiment according to the present invention. First, the manufacturing method of the plasma display panel according to the present invention is formed through the same sequential process as shown in FIG. However, in the method of manufacturing a plasma display panel according to the present invention, thicknesses of end portions between partition walls formed on an invalid screen are different from each other, and lengths of one or more partition walls having different lengths are different from each other.

Such a manufacturing method of the plasma display panel according to the present invention is an assembly process including a front panel manufacturing process listed on the left side of FIG. 8, a rear panel manufacturing process listed on the right side, and a sealing process listed on the bottom side, as shown in FIG. 5. It includes. Therefore, the description of the front panel manufacturing process, the rear panel manufacturing process, and the assembly process in which the front panel and the rear panel are attached are the same as those described above with reference to FIG. 8 and will be omitted below.

Here, in the manufacturing method of the plasma display panel according to the present invention, another example of the manufacturing process of the rear panel is as follows.

9 is a flowchart sequentially illustrating a manufacturing process of a rear panel as another example of the plasma display panel according to the present invention. First, the manufacturing process of the plasma display rear panel according to the present invention is formed through the same sequential process as shown in FIG. However, the partition wall of the plasma display rear panel according to the present invention is formed such that the partition wall thickly formed on the invalid screen has a length deviation between the partition walls.

In this case, the remaining processes other than the partition wall of the manufacturing process for forming the plasma display back panel according to the present invention will be omitted below since the same manufacturing process as shown in FIG.

Herein, a process of forming the partition wall as another example of the above-described manufacturing process of the plasma display rear panel according to the present invention will be described with reference to FIGS. 10A to 10D.

10A to 10D are views illustrating a process in which a partition, which is another example of the rear panel manufacturing process illustrated in FIG. 9, is formed by a sanding method. First, the process of forming the partition wall of the plasma display rear panel according to the present invention is subjected to the same process as shown in Figure 7a to 7d. However, the partition walls of the plasma display rear panel according to the present invention are formed so that the end portions between the partition walls are spaced apart from each other, and the lengths of the partition walls formed in the longitudinal direction of the partition walls including the end portions between the partition walls are formed to have a length deviation from each other. The process of forming the partition wall, which is another example of the plasma display rear panel according to the present invention by a sanding method, will be described in more detail with reference to FIGS. 10A to 10D.

As shown in FIGS. 10A to 10D, first, a rear panel according to the present invention has a plurality of address electrodes (not shown) formed on the rear glass (not shown), and covers the above-described address electrodes (not shown). A dielectric layer (not shown) is formed.

Thereafter, as illustrated in FIG. 10A, the discharge cells are partitioned to an invalid screen B on the upper side of the rear glass 1020 including the dielectric layer (not shown), and cross-talk between adjacent cells is prevented. In order to form a predetermined pattern mask 1030 to prepare a plurality of partitions (not shown).

Here, the above-described predetermined pattern mask 1030 is formed even on the invalid screen B, and the end of the predetermined pattern mask 1030 formed on the invalid screen B is formed to be thicker than other portions.

Further, end portions between the predetermined pattern masks 1030 are formed to be spaced apart from each other, and lengths L ₁ and L between the predetermined pattern masks 1030 formed in the longitudinal direction of the predetermined pattern mask 1030 including the aforementioned ends. ₂ ) are formed such that there is a length deviation from each other.

Subsequently, by sanding the aforementioned partition material 1021a to the predetermined pattern mask 1030 by using the predetermined partition pattern device 1040 including the partition material 1021a as shown in FIG. 10B, As illustrated in FIG. 10C, a plurality of partition walls 1021 are formed on the ineffective screen B on the upper side of the rear glass 1020.

In the plasma display rear panel formed as described above, a predetermined pattern mask 1030 is formed on the rear surface of the plasma display rear panel so as to form a thick end portion of the partition wall 1021 using a predetermined partition pattern device 1040 as shown in FIG. 10D. It is formed even on the ineffective screen B on the glass 1020.

Therefore, the partition wall 1021 formed on the rear glass 1020 has the partition wall material 1021a sanded on the predetermined pattern mask 1030 in the moving direction a to b of the predetermined partition wall pattern device 1040. Although formed by the end portion P _{5 of} the partition 1021 is formed thicker than the end portion (P ₃ of FIG. 7D) of the partition wall 721 of FIG. 7D shown in FIG. 7D, the end of the partition wall 1021 is formed. The coupling force between the portion P ₅ and the central portion P ₆ is stronger than that of the partition wall 721 of FIG. 7D, so that the collapse of the end portion P ₅ of the partition wall 1021 is no longer caused.

Accordingly, since fragments of the partition wall 1021 are not generated further, the phosphor layer (not shown) of the rear glass 1020 is not damaged, thereby further compensating for the color purity of the phosphor layer during plasma discharge, and the lifetime of the phosphor layer. It is possible to further increase the.

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 improves the barrier rib structure of the rear panel to prevent the collapse of the barrier rib, thereby compensating for the color purity of the phosphor layer and extending the life of the phosphor layer.

Claims (3)

A plurality of address electrodes formed on the glass; A dielectric layer formed to cover the plurality of address electrodes; It includes a plurality of partitions formed to partition the discharge cell on the dielectric layer, At least one of the plurality of partitions is formed in the ineffective screen area, And at least one end of the at least one barrier rib formed in the ineffective screen region is thicker than another portion of the barrier rib. The method of claim 1, And an end portion between the adjacent partition walls is spaced apart from each other. The method of claim 1, The length of the at least one partition wall is different from the rest of the plasma display panel.

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