KR19990003561A - Manufacturing Method of Plasma Display Panel - Google Patents

Abstract

The present invention discloses a method of manufacturing a plasma display panel. According to an aspect of the present invention, there is provided a method of manufacturing a plasma display panel including a back substrate and a front substrate, the method comprising: forming address electrodes on the back substrate; Forming barrier ribs for defining independent discharge spaces between the adjacent address electrodes and preventing cross-talk between pixels; Applying a MgO paste of a predetermined thickness on the back substrate including the side of the partition and the address electrode; Applying a phosphor having a predetermined thickness on the MgO paste; Forming a discharge sustaining electrode on the front substrate; Stacking a dielectric layer and a protective layer on the front substrate including the discharge sustain electrode; Bonding the back substrate and the front substrate to face each other; And injecting a discharge gas into a discharge space formed by bonding the rear substrate and the front substrate to each other.

Description

Manufacturing Method Of Plasma Display Panel

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a plasma display panel. More particularly, the present invention relates to a partition wall which is formed to define independent discharge spaces and prevent crosstalk between pixels.

In general, a plasma display panel (PDP) is composed of an array of discharge cells capable of independently discharging, and discharges each discharge cell independently according to an external electrical signal to generate a desired video signal. It is a flat panel display device to reproduce.

The PDP can reduce the thickness between the transparent substrates to about 10 cm or less, thereby significantly reducing the thickness and weight of the display device compared to the CRT display device using an electron gun. In addition, by forming a wider space between the partitions, a larger screen can be obtained than the liquid crystal display device, and the narrow viewing angle, which is the weakest point of the liquid crystal display device, can be improved.

1 is a diagram illustrating a PDP according to the prior art, and as shown, the PDP consists of a pair of transparent substrates, namely, a back substrate 1 and a front substrate 5. In the drawing, address electrodes 2 in the form of stripes are formed on the back substrate 1, and barrier ribs for defining independent discharge spaces between the address electrodes 2 and preventing cross-talk between pixels. 3) is formed. In addition, in the discharge space defined by the partition wall 3, a phosphor 4 for realizing colorization is applied even when the address electrode 2 is covered.

On the other hand, on the front substrate 5 opposed to and disposed on the rear substrate 1, transparent electrodes 6 for discharging are formed to be orthogonal to the address electrode 2, and the applied voltage is maintained on the upper substrate. Bus electrodes 7 are formed. In addition, a dielectric layer 8 and an MgO layer 9 for protecting the dielectric layer 8 are stacked on the front substrate 5 including the electrodes 6 and 7.

In addition, in the drawing, the back substrate 1 and the front substrate 5 are attached and sealed by a sealing material, and discharge gases 10 are injected into the discharge space.

However, in the PDP according to the related art, the partition wall is sputtered by the ion particles generated during the gas discharge, wherein the sputtered partition material adheres to the surface of the phosphor without returning to its original position after the discharge is completed. There is a problem in that the lifetime of the PDP is shortened due to the reduced luminance.

Accordingly, the present invention prevents the partition wall from being sputtered by ion particles during gas discharge by applying MgO paste, which is a sputtering material and having excellent secondary electron emission capability, on the back substrate having the side of the partition and the address electrode formed thereon. Of course, an object of the present invention is to provide a method of manufacturing a PDP that can improve the brightness by using secondary electron emission by MgO.

1 is a cross-sectional view for explaining a plasma display panel according to the prior art.

2 is a cross-sectional view illustrating a method of manufacturing a plasma display panel according to the present invention.

* Explanation of symbols for main parts of the drawings

11 back substrate 12 address electrode

13: bulkhead 14: MgO paste

15: phosphor 16: front substrate

17: transparent electrode 18: bus electrode

19: dielectric layer 20: protective insect

21: discharge gas

The above object is a method of manufacturing a plasma display panel including a back substrate and a front substrate, comprising: forming address electrodes on the back substrate; Forming barrier ribs for defining independent discharge spaces between the adjacent address electrodes and preventing cross-talk between pixels; Applying a MgO paste of a predetermined thickness on the back substrate including the side of the partition and the address electrode; Applying a phosphor having a predetermined thickness on the MgO paste; Forming a discharge sustaining electrode on the front substrate; Stacking a dielectric layer and a protective layer on the front substrate including the discharge sustain electrode; Bonding the back substrate and the front substrate to face each other; And injecting a discharge gas into a discharge space in which the rear substrate and the front substrate are bonded to each other.

According to the present invention, by applying the MgO paste on the side portion and the back substrate of the partition wall, it is possible to minimize the sputtering of the partition wall to prevent the life of the PDP.

EXAMPLE

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

2 is a view for explaining the manufacturing method of the PDP according to the present invention, the PDP is composed of a pair of transparent substrate, that is, the back substrate 11 and the front substrate 16. As shown, the address electrodes 12 are formed on the rear substrate 11 and have stripe-shaped address electrodes 12. The barrier ribs define independent discharge spaces between the address electrodes 12 and prevent crosstalk between pixels. (13) is formed. In addition, the MgO paste 14 is apply | coated to the side part of the partition 13 by the screen printing method or the exposure method. Here, MgO is a ferroelectric material having a pervoskite structure, a sputtering material having a high resistance to ionic particles, and a material having many secondary electron emission. Therefore, it is possible to reduce the sputtering of the partition wall 13 by the ion particles generated at the time of gas discharge, to prevent the sputtered partition material from adhering to the phosphor, and thus, to reduce the brightness of the PDP. It is possible to prevent the deterioration of life. In addition, since MgO itself emits a lot of secondary electrons, the luminance of the PDP can be improved.

Subsequently, on the MgO paste 14 applied on the address electrode 12, one phosphor 15 selected from red, blue or green for realizing coloration is applied to a predetermined thickness.

On the other hand, on the front substrate 16 facing and disposed on the rear substrate 11, transparent electrodes 17 for discharging are formed to be orthogonal to the address electrodes 12, and the applied voltage is maintained thereon. Bus electrodes 18 are formed. Here, as the transparent electrode 17, a sustain electrode to which a constant voltage is applied and a scan electrode to which a predetermined voltage for causing discharge are applied are repeatedly arranged. In addition, a dielectric layer 19 and a protective layer 20 such as MgO for protecting the dielectric layer 19 are stacked on the front substrate 16 including the electrodes 17 and 18.

In addition, the back substrate 11 and the front substrate 16 as described above are attached and sealed by a sealing paste, and in the discharge space, such as neon (Ne), xenon (Xe) or argon (Ar). The discharge gas 21 is injected.

As described above, the PDP manufacturing method of the present invention prevents the partition wall from being sputtered by the ion particles generated at the time of discharge by applying the MgO paste, which is a sputtering material on the side of the partition, and has excellent secondary electron emission capability. Therefore, the lifespan of the PDP can be prevented, and much secondary electrons are emitted from MgO, thereby improving the brightness of the PDP.

Meanwhile, although specific embodiments of the present invention have been described and illustrated, modifications and variations can be made by those skilled in the art. Accordingly, the following claims are to be understood as including all modifications and variations as long as they fall within the true spirit and scope of the present invention.

Claims (3)

A method of manufacturing a plasma display panel including a back substrate and a front substrate, the method comprising: forming address electrodes on the back substrate; Forming barrier ribs for defining independent discharge spaces between the adjacent address electrodes and preventing cross-talk between pixels; Applying a MgO paste of a predetermined thickness on the back substrate including the side of the partition and the address electrode; Applying a phosphor having a predetermined thickness on the MgO paste; Forming a discharge sustaining electrode on the front substrate; Stacking a dielectric layer and a protective layer on the front substrate including the discharge sustain electrode; Bonding the back substrate and the front substrate to face each other; And injecting a discharge gas into a discharge space in which the rear substrate and the front substrate are bonded to each other. The method of manufacturing a plasma display panel according to claim 1, wherein the MgO paste is applied by screen printing. The method of manufacturing a plasma display panel according to claim 1, wherein the MgO paste is applied by an exposure method.