KR20060062994A - Method of manufacturing for plasma display panel - Google Patents

Abstract

The present invention relates to a method for manufacturing a plasma display panel, and more particularly, to a method for manufacturing a plasma display panel using a laminating method.

The present invention provides a front substrate in which a plurality of sustain electrode pairs formed by pairing scan electrodes and sustain electrodes in a front glass are arranged in parallel, and a rear substrate in which a plurality of address electrodes are arranged in the rear glass in a direction crossing the plurality of sustain electrode pairs. In the method of manufacturing a plasma display panel including a partition wall disposed between a front substrate and a rear substrate to partition a discharge cell, the sustain electrode and the address electrode may be made of a green sheet.

The present invention has the effect of reducing the manufacturing cost and improving the reliability of the operation through the improved manufacturing process of the plasma display panel.

Plasma Display Panels, Bus Electrodes, Green Sheets, Laminating, Black Matrix (BM)

Description

Method of manufacturing plasma display panel {Method of Manufacturing for Plasma Display Panel}

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

2 is a process diagram sequentially illustrating a process of forming a black matrix (BM) and a silver (Ag) electrode using a conventional photolithography method.

3A to 3E are diagrams illustrating the formation of a black matrix (BM) and a silver (Ag) electrode using a laminating method according to the present invention.

***** Explanation of symbols for the main parts of the drawing *****

310a: scan electrode 310b: sustain electrode

310c: Black Matrix (BM) 310: Green Sheet

330: Cover film (330) 350: Base film

The present invention relates to a method of manufacturing a plasma display panel, and more particularly, to a method of manufacturing a plasma display panel using a laminating method.

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 showing the structure of a general 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 substrate 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 substrate 110 is arranged in such a manner 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 of silver (Ag) are formed on the front substrate, and an upper dielectric layer which insulates the discharge current of 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 the manufacturing process in which a protective layer formed by depositing magnesium oxide (Mgo).

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 discharge cells on an upper surface of the dielectric layer. A manufacturing process to be formed, a manufacturing process in which a black matrix layer (BM) is formed on the partition wall, and a manufacturing process in which a phosphor layer emitting visible light for image display is formed between the partition walls.

In this case, an electrode made of silver (Ag) and a black matrix (BM) are generally manufactured by using photolithography.

FIG. 2 is a flowchart sequentially illustrating a process of forming a black matrix (BM) and a silver (Ag) electrode using a conventional photolithography method. As shown in FIG. 2, in the step (a), the silver electrode film 232 is formed to a predetermined thickness by using an electrode paste, which is an electrode forming material, on the glass substrate 230. do.

Thereafter, in step (b), the photoresist 234 is applied on the silver (Ag) electrode film 232, and then, in step (c), predetermined light is formed using the photomask 236 having a predetermined pattern. The photoresist 234 is selectively irradiated and cured.

This process is called an exposure process. After the exposure process, the glass substrate 230 is washed with the uncured photoresist 234 through the (d) development process, and then etched in the step (e) to remove the photoresist 234, thereby causing silver (Ag) to be removed. An electrode 232 is formed. The silver (Ag) electrode 232 is formed by drying in the step (f) and then heating and baking at a temperature of 550 ° C. or higher to 600 ° C. or lower.

In addition, the black matrix layer BM is also formed using a photolithography method. A black matrix layer (not illustrated) is formed on a partition wall (not shown) by using a black matrix (BM) paste, which is a dielectric material, at a predetermined thickness. C).

Thereafter, the manufacturing process to be formed is the same as the manufacturing process in which the silver (Ag) electrode is formed and will be omitted below.

However, the silver (Ag) electrode and the black matrix (BM) paste have a wet process that requires the use of a solution during the developing process and the etching process when the manufacturing process is performed through screen printing. Pollution degree by becomes high.

In addition, since the unnecessary paste portion must be cut out during the etching process after the developing process, the manufacturing cost is economically lost.

In order to solve the above problems, an object of the present invention is to provide a method of manufacturing a plasma display panel that can improve the reliability of the operation while lowering the manufacturing cost.

The method of manufacturing a plasma display panel of the present invention for solving the above technical problem crosses a front substrate and a plurality of sustain electrode pairs in which a plurality of sustain electrode pairs formed by pairing a scan electrode and a sustain electrode on a front glass are arranged in parallel. In the manufacturing method of the plasma display panel including a plurality of address electrodes arranged in the rear glass arranged in the rear glass, and between the front substrate and the rear substrate partition wall partitioning the discharge cells, the sustain electrode and the address electrode is drawn It is characterized in that the sheet (Green Sheet) is produced.

In addition, the sustain electrode and the address electrode may be formed of at least one of the transparent electrode and the bus electrode.

In addition, a black matrix layer is further formed on the sustain electrode.

In addition, the black matrix layer is characterized in that the green sheet (Green Sheet) is produced.

In addition, the black matrix layer may be made of the same green sheet together with the sustain electrode.

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

3A to 3E are diagrams illustrating the formation of a black matrix (BM) and silver (Ag) electrodes using a laminating method according to the present invention. First, the laminating method using the green sheet shown in FIG. 3A is a cover film on top of the green sheet 310 during the process to protect the green sheet 310. A cover film 330 is formed, and a base film 350 is formed at the lower portion thereof to be laminated with the green sheet 310.

In this case, as shown in FIG. 3B, the cover film 330 formed on the green sheet 310 by the rolls having the respective functions and the base film formed on the lower portion of the green sheet 310 are formed. The base film 350 is peeled off during the laminating process with the glass panel so that only the green sheet 310 in the center is laminated to the glass panel.                     

As described above, the present invention using the laminating method by manufacturing a green sheet 310 is a scan electrode 310a made of silver (Ag) of a front substrate (not shown) as shown in FIG. 3C. The sustain electrode 310b is made of a green sheet 310 to be laminated to form an electrode. Here, it is also possible to form an electrode by making the address electrode (not shown) by laminating the green sheet 310 as described above.

In this case, the scan electrode 310a and the sustain electrode 310b which are sustain electrodes are made of at least one of a transparent electrode (not shown) and a bus electrode (not shown), and the transparent electrode (not shown) and the bus electrode (not shown) are described above. It is preferable to form an electrode by making a green sheet 310 to be laminated (Laminating). For convenience of description, each scan electrode 310a and the sustain electrode 310b including the transparent electrode (not shown) and the bus electrode (not shown) may be manufactured by laminating a green sheet 310. It is referred to as the manufacturing process in which the electrode is formed.

In addition, as shown in FIG. 3D, a black matrix layer (BM) 310c is formed on the front substrate (not shown) to face the partition wall (not shown), which is also a green sheet 310. Make it to be laminated.

The scan electrodes 310a, the sustain electrodes 310b, and the black matrix layer (BM) 310c, which are the sustain electrodes thus formed, are directly laminated with respective patterns, and thus a large amount of the black matrix layer BM washed during etching is performed. ) And the paste of the scan electrode 310a and the sustain electrode 310b can be drastically reduced, resulting in an increase in manufacturing cost compared to the conventional manufacturing process using screen printing.

In addition, since the wet method, which requires the use of a solution during the developing process and the nicking process, is not performed, the degree of contamination due to impurities may be lowered, thereby improving the reliability of the work.

Meanwhile, as shown in FIG. 3E, the black matrix layer (BM) 310c is formed on the scan electrode 310a and the sustain electrode 310b together to form the scan electrode 310a, the sustain electrode 310b, and the black matrix layer. When the (BM) 310c is made of green sheets and laminated at the same time, this is performed by forming the black matrix (BM) 310c after forming the scan electrode 310a and the sustain electrode 310b. Since the manufacturing process to be formed may be omitted, the manufacturing time is shortened.

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 reducing the manufacturing cost and the reliability of the operation through the improved manufacturing process of the plasma display panel.

Claims (5)

A front substrate in which a plurality of pairs of sustain electrodes formed by pairing a scan electrode and a sustain electrode on the front glass are arranged in parallel; In a method of manufacturing a plasma display panel comprising a rear substrate having a plurality of address electrodes arranged in a rear glass in a direction crossing the plurality of sustain electrode pairs, partition walls disposed between the front substrate and the rear substrate to partition discharge cells. In And the sustain electrode and the address electrode are made of a green sheet. The method of claim 1, And said sustain electrode and said address electrode comprise at least one of a transparent electrode and a bus electrode. The method of claim 1, And a black matrix layer is formed on the sustain electrode. The method of claim 3, wherein The black matrix layer is a manufacturing method of the plasma display panel, characterized in that the green sheet (Green Sheet). The method according to any one of claims 3 to 4, And the black matrix layer is made of the same green sheet together with the sustain electrode.

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