KR20050109739A - Plasma display panel and method for forming the same - Google Patents

Abstract

The present invention relates to a PDP and a method for forming the same, wherein a failure turn for sealing the front substrate and the back substrate is formed of a green sheet cut into a seal line shape to minimize characteristic changes and to prevent deterioration of device characteristics. Technology.

Description

Plasma display panel and method for forming the same

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display panel (hereinafter referred to as a PDP) and a method for forming the same, which is a flat panel display device. The present invention relates to a PDP capable of preventing burst of a failure turn due to stress concentration and reducing the width of the failure turn to secure a filling space for a panning gas.

In recent years, with the rapid development of ultra-high density semiconductor manufacturing technology and ultra-high vacuum technology, research on new micron-sized triode tube devices has been invigorating. CRT and liquid crystal display (CRT) and liquid crystal displays have been applied to such devices. Attention is directed to developing a new flat panel display device having the advantages of an LCD.

Among them, a color PDP device using gas discharge is a typical flat panel device that has been studied in the yield method and manufacturing process required for mass production in the step of studying a driving method or a structure.

AC type PDP arranges X and Y electrodes for sustain discharge on the front panel on the display side, and seals and seals two substrates having address electrodes and phosphors for data writing on the back substrate on the opposite side. Formed by filling with gas.

1 and 2 are cross-sectional views of a general PDP and a plan view of a back substrate, which is an example of a surface discharge full color AC PDP.

First, an oxide film 11 is formed on the front substrate 10 surface on the display surface side, and the resistances of the sustain electrodes 12 and the sustain electrodes 12 in the X and Y directions are formed on the transparent electrode 11. Each display electrode composed of a bus electrode 13 for compensation is formed, and black stripe 14 is formed between each display electrode, and a transparent dielectric film 15 and a protective layer on the entire surface of the structure. 16 is formed.

In addition, an address electrode 21 is formed on the back substrate 20 facing the front substrate 10, and an opaque dielectric film 22, a partition 23, and a phosphor layer 24 are formed on the entire surface of the structure. ) Is formed.

The rear substrate 20 is viewed in plan with reference to FIG. 2. In the display area 25 of the rear substrate 20, barrier ribs 23 are repeatedly arranged in the vertical direction, and the outer surface of the barrier rib 23 is formed. A seal line 26 necessary for joining is formed, and an exhaust port 27 is formed between the seal line 26 and the partition wall 23.

The paste is applied to the seal line 26 outside the rear substrate 20 or the front substrate 10, and is linearly applied using a dispenser, and the front and rear substrates 10 and 20 are aligned. After bonding, air and impurities are removed through an exhaust port 27 formed at one side of the rear substrate 20, and the PDP panel is completed by filling the inside with a discharge gas and then sealing the inside.

Thereafter, the assembly work for connecting the electrodes formed on the substrates to an external power source is performed.

In the conventional PDP and the method of forming the same, a failure turn for sealing the front substrate and the rear substrate is formed into a strip having a width of about 3 to 4 mm by dispensing a paste. Since the thickness of the pattern is not uniformly adjusted and the seal line overlaps the starting and ending portions, a gap between the partition wall and the front substrate is caused, which causes noise generated in the panel during driving. It is also difficult to control the width, and a problem of phosphor contamination occurs as the paste, which is a material of the failure turn, dries.

The present invention is to solve the above problems, by laminating the green sheet (green sheet) cut in the shape of a seal line (seal line) on the top of the back substrate or the front substrate to form a failure turn and heat treatment to form and size It is an object of the present invention to provide a PDP and a method of forming the same, which provide a failure turn with little change.

PDP according to the present invention to achieve the above object,

In a PDP having a configuration in which a front substrate having a sustain electrode and a rear substrate having an address electrode and a phosphor are joined in a failed turn,

The failure turn is formed of a green sheet,

The green sheet has a glass content of 70 to 90 wt% containing PbO-B2O3 used as a sealing glass, and a 10 to 20 wt% content of an organic binder including a binder and a plasticizer. And it is characterized by having a composition containing other additives within 5 wt%.

In addition, the PDP forming method according to the present invention to achieve the above object,

A method of forming a PDP having a configuration in which a front substrate having a sustain electrode and a rear substrate having an address electrode and a phosphor are bonded in a failed turn,

Cutting the green sheet into a seal line shape,

The cut green sheet in the form of a seal line on the back substrate Laminating,

Prebaking the green sheet stacked on the back substrate to form a failure turn;

The green sheet has a glass content of 70 to 90 wt% containing PbO-B2O3 used as a sealing glass, and a 10 to 20 wt% content of an organic binder including a binder and a plasticizer. And it is characterized by having a composition containing other additives within 5 wt%.

Hereinafter, a PDP according to the present invention will be described in detail with reference to the accompanying drawings.

3 is a schematic diagram of a PDP back substrate according to an embodiment of the present invention. As an enlarged example of a failure turn formed on a back substrate, the back substrate may be formed on the front substrate instead of the back substrate.

Although not shown, first, the front substrate is formed by a conventional method, and after forming the back substrate 40 including the address electrode, the partition wall, and the phosphor, the failure turn formed as a green sheet on the back substrate 40 ( 42).

At this time, the failure turn 42 is formed by cutting the planar green sheet in the form of a seal line, laminating it at the seal line position on the back substrate 40, prebaking, and then sealing.

Here, the green sheet is for sealing made of a sealing glass, an organic binder, a plasticizer and a solvent, etc., and should be easily laminated with lamination, and the inside of the panel due to binder burnout. Should not cause contamination.

The green sheet should be a composition that is easy to manufacture, that is, an advantageous composition to make the proper thickness required for sealing, and the content of the binder should be as low as possible in order to minimize contamination of the panel.

More specifically, the composition of the green sheet is 70 to 90 wt% of the glass content containing PbO-B2O3 used as the sealing glass, the organic binder containing a binder (plasticizer) and a plasticizer (plasticizer) The content is 10 to 20 wt% and other additives are within 5 wt%.

As described above, the PDP and the method for forming the same according to the present invention provide a failure turn formed by cutting a planar green sheet into a seal line shape and laminating and prebaking the back substrate or the front substrate to provide a thickness of the failure turn and Uniformity with almost no change in width provides the effect of remarkably reducing the noise generated in the PDP panel. By using the dried green sheet, it is possible to prevent the phosphor contamination problem caused by the paste drying.

1 is a cross-sectional view of a conventional PDP.

2 is a plan view of a conventional PDP back substrate.

Figure 3 is a plan view of the back substrate of the PDP according to an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

10: front substrate 11: transparent electrode

12 sustain electrode 13 bus electrode

14 black stripe layer 5 transparent dielectric film

16: protective layer 20, 40: back substrate

21 address electrode 22 opaque dielectric film

23: partition 24: phosphor layer

25: display area 26: seal line

27: exhaust port 42: rear seal line

Claims (4)

In a PDP having a configuration in which a front substrate having a sustain electrode and a rear substrate having an address electrode and a phosphor are joined in a failed turn, Wherein the failing turn is formed of a green sheet. The method of claim 1, The green sheet has a glass content of 70 to 90 wt% containing PbO-B2O3 used as a sealing glass, and a 10 to 20 wt% content of an organic binder including a binder and a plasticizer. And a composition containing other additives within 5 wt%. A method of forming a PDP having a configuration in which a front substrate having a sustain electrode and a rear substrate having an address electrode and a phosphor are bonded in a failed turn, Cutting the green sheet into a seal line shape, Stacking the cut green sheet in the form of a seal line on a back substrate or a front substrate; And pre-baking the green sheet stacked on the back substrate or the front substrate to form a failure turn. The method of claim 3, wherein The green sheet has a glass content of 70 to 90 wt% containing PbO-B2O3 used as a sealing glass, and a 10 to 20 wt% content of an organic binder including a binder and a plasticizer. And a composition containing other additives within 5 wt%.