KR20030037727A - Method for Fabricating of Plasma Display Panel - Google Patents

Abstract

PURPOSE: A method for manufacturing a plasma display panel is provided to be capable of simplifying process procedures and preventing a barrier rib from being deteriorated of inferior quality by forming a white-back paste film and a barrier rib paste film in a body. CONSTITUTION: The first paste layer(22) having the first amount of rinse and the second paste layer(23) having the second amount of rinse are formed on a substrate(21) on which an electrode formation is finished. The second amount of rinse is less than the first amount of rinse. The second paste layer is covered with a photosensitive material. By pattering the photosensitive material, a photosensitive pattern is formed to cover a cross section of the second paste layer in the direction of the electrode. By sand blasting the photosensitive pattern with a mask, a barrier rib is formed with the second paste layer. The barrier rib is burned out.

Description

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

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display panel, and more particularly, to a method of manufacturing a plasma display panel that can simplify a process and eliminate a separation of a partition by forming a white back and a rib.

In general, a plasma display panel (hereinafter referred to as a PDP) is an element that displays characters or graphics by using light emitted from plasma generated during gas discharge. PDP is the most suitable for large-sized display among many flat panel display devices such as liquid crystal display (LCD), field emission display (FED), electro luminescence display (ELD), and vacuum fluorescent display (VFD). .

That is, the plasma display panel can be enlarged to 40 "or larger, and CRT level colorization is possible because the ultraviolet light generated by the discharge uses a photoluminescence mechanism that stimulates the fluorescent film to emit visible light. As a self-emissive display, it has many unique advantages not found in other flat panel devices, such as a wide viewing angle of 160 ° or more, and is a multimedia that combines the functions of next-generation high-definition wall TV and TV and PC. BACKGROUND ART As a large display device for a multimedia, it is considered to be prominent, and interest in this has recently increased.

PDP uses two glass substrates with a thickness of 3 mm to apply an appropriate electrode and phosphor on each substrate, and forms plasma in the space therebetween while maintaining the distance between the two substrates at about 0.1 mm to 0.2 mm. Since the method is adopted, the size of the flat plate can be increased.

In addition, in the PDP, the gas discharge has a strong nonlinearity in which discharge does not occur even when a voltage is applied between electrodes, and a large-sized panel has a memory function that is essential for driving a large display. Even in this case, a high quality image can be expressed without deteriorating the luminance.

The PDP is a direct current (DC type) in which the electrode for generating plasma is directly exposed to the plasma so that the conduction current flows directly through the electrode, and the electrode is covered with a dielectric so that the displacement current is not directly exposed. It is divided into alternating current type (AC type).

The front plate of AC type PDP is composed of a pair of parallel transparent electrodes, a bus electrode formed on the transparent electrode to increase conductivity, a dielectric layer, etc., and the back plate is formed of an address electrode, a dielectric layer, A barrier rib formed on the dielectric layer and a fluorescent layer formed between the barrier ribs. The front and back plates of such a structure are sealed and exhausted to form a PDP.

As the barrier rib forming method of the existing AC PDP, a screen printing method, a sandblast method, a lift off method, and the like are used. Among them, screen printing is mainly used, but printing is not effective in the high-definition eXtended Graphics Adapter (XGA) class. Therefore, most of the partitions are formed by sandblasting.

Hereinafter, a method of manufacturing a plasma display panel according to the related art will be described with reference to the accompanying drawings.

1A to 1G are cross-sectional views of a manufacturing process of a plasma display panel according to the prior art.

First, as shown in FIG. 1A, an address electrode (not shown) is formed on the substrate 11 by using a printing method, an additive method, a photosensitive paste, and the like on the address electrode and the substrate 11. A white-back paste film 12 is applied to the film.

Here, the white-back paste film 12 is formed using any one of a printing method and a coating method.

Subsequently, as illustrated in FIG. 1B, the white-back paste film 12 is dried and fired.

Subsequently, as shown in FIG. 1C, a rib paste film 13 is coated by printing or coating.

The partition paste layer 13 includes a powder component, a lower white-back paste layer 12, and a binder component for adhesion.

Subsequently, as shown in FIG. 1D, a dry film resist DFR covering the partition paste layer 13 is formed by a laminating method.

Thereafter, the dry film resist is patterned by an exposure and development process to form a dry film resist pattern 14 covering the partition paste film 13 facing the address electrode ??.

Then, as shown in FIG. 1E, the blasting process is performed by sandblasting the dry film resist pattern 14 using a mask to form a partition 13a formed of the remaining partition paste film 13.

Thereafter, as shown in FIG. 1F, the dry film resist pattern 14 remaining after the partition 13a is formed is peeled off by a wet process using an aqueous solution such as an alkali solution, such as NaOH, before the firing process, and FIG. 1G. The firing process is carried out as shown in FIG.

In the peeling process, an adhesive component (Binder) which adheres between the partition paste film 13 and the white-back paste film 12 among the components of the partition paste film 13 is separated by the peeling liquid, and the partition wall 13a is The white-back paste film 12 is separated.

This problem is more serious in the high-definition XGA class than in the VGA (Video Graphics Array) class.

Subsequently, although not shown in the figure, a fluorescent layer is formed between the partitions 13a to complete the conventional plasma display panel.

However, the conventional method of manufacturing the plasma display panel as described above has the following problems.

First, since the white-back paste film and the barrier paste film are respectively formed, the printing and firing processes must be performed on each of the white-back paste film and the barrier paste film, which is a complicated process procedure.

Second, the adhesion component for adhering the white-back paste film to the partition wall is removed by the stripping solution used in the dry film resist pattern stripping process, thereby causing a defect that the partition wall is peeled off.

An object of the present invention is to provide a method of manufacturing a plasma display panel capable of simplifying a process procedure and preventing a barrier failure by forming an integrated body of a white-back paste film and a barrier paste film. There is this.

1A to 1G are cross-sectional views of a manufacturing process of a plasma display panel according to the related art.

2A to 2E are cross-sectional views of a manufacturing process of a plasma display panel according to an exemplary embodiment of the present invention.

Explanation of symbols for the main parts of drawings

21: back plate 22: reflecting film

23: partition material 24: photosensitive film

23a: bulkhead

In the method of manufacturing a plasma display panel according to the present invention for achieving the above object, in the method of forming a back plate of a plasma display panel, a first paste layer having a first resin amount on a substrate on which electrodes are formed is completed. And sequentially forming a second paste layer having a second resin amount smaller than the first resin amount, forming a photosensitive material covering the second paste layer, and patterning the photosensitive material in the direction of the electrode. Forming a photoresist pattern covering an end surface of the second paste layer, sand blasting the photoresist pattern with a mask to form a partition wall using the second paste layer, and performing a baking process on the partition wall Characterized in that it comprises a step.

In general, the sand resistance of the barrier paste material increases in proportion to the rinse content in the paste. Typically, the partition paste has a sand blast speed difference of about 15% when the rinse content of the powder is about 0.5%.

The present invention focuses on these characteristics and the fact that the reflectance of the lower layer of the barrier layer does not differ significantly from the white-back paste layer. Thus, the present invention relates to a plasma display panel manufacturing method according to the present invention. When described in more detail with reference to as follows.

2A through 2E are cross-sectional views illustrating a manufacturing process of a plasma display panel according to an exemplary embodiment of the present invention.

First, as shown in FIG. 2A, an address electrode (not shown) is formed on the substrate 21 by using a printing method, an additive method, a photosensitive paste, and the like, and then on the address electrode and the substrate 21. First and second paste films 22 and 23 having different rinse contents are formed.

The first paste layer 22 may have a rinse content that is about 2 to 10 times higher than that of the second paste layer 23.

As a method of forming the first and second paste layers 22 and 23, both a printing method and a coating method may be used, but a coating method is more effective than a printing method.

Subsequently, drying and firing processes are performed on the first and second paste films 22 and 23.

Subsequently, as shown in FIG. 2B, a dry film resist DFR covering the second paste layer 23 is formed by a laminating method.

Thereafter, the dry film resist is patterned by an exposure and development process to form a dry film resist pattern 24 covering the second paste layer 23 facing the address electrode ??.

Then, as shown in FIG. 2C, the blast barrier 23a formed of the second paste layer 23 remaining by sandblasting the dry film resist pattern 14 using a mask is formed.

Here, since the first paste layer 22 has a high rinse content and has high sand resistance, only the second paste layer 23 is sanded during the sand blasting process so that the partition 23a is formed. Is formed.

In addition, as described above, since the reflectance of the lower portion of the partition 23a, that is, the first paste layer 22 is similar to that of the white-back paste layer, the first paste layer 22 serves as a white back.

As shown in FIG. 2D, the dry film resist pattern 24 remaining after the partition wall 23a is formed is peeled off by a wet process using a stripping solution, that is, an aqueous alkali solution such as NaOH.

Subsequently, as shown in FIG. 2E, the barrier rib 23a is fired and a fluorescent layer is formed between the barrier ribs 23a, although not shown in the drawing, to complete the plasma display panel according to the present invention.

The manufacturing method of the plasma display panel of the present invention as described above has the following effects.

First, the process can be simplified since the white-back coating process, the drying and the baking process are not required.

Second, the white bag and the partition may be integrally formed to prevent a defect in which the partition is peeled off.

Third, since the white bag and the partition are integrated to strengthen the partition substructure, the strength of the partition is increased.

Claims (3)

In the method of forming the back plate of the plasma display panel, Sequentially forming a first paste layer having a first resin amount and a second paste layer having a second resin amount smaller than the first resin amount on a substrate on which electrode formation is completed; Forming a photosensitive material covering the second paste layer; Patterning the photosensitive material to form a photosensitive material pattern covering an end surface of the second paste layer in the electrode direction; Sand blasting the photoresist pattern with a mask to form a partition wall with the second paste layer; And performing a calcination process for the partition wall. The method of claim 1, wherein the first paste layer and the second paste layer are made of the same material having a different rinse content. The method of manufacturing a plasma display panel according to claim 1, wherein the first resin amount is 2 to 10 times the second resin amount.