KR100947960B1 - Plasma display panel - Google Patents

Abstract

The present invention discloses a plasma display panel.

The present invention forms a holding and scanning electrode on a glass substrate cut to a predetermined size, a front substrate on which the cut surface of the glass substrate is polished and a partition and an address electrode are formed on the glass substrate cut to a predetermined size. A plurality of panels having a rear substrate polished by cutting the cut surface of the glass substrate is assembled to form a large surface, the sealant corresponding to the side of the panel is applied, the sealant is to have a shape in which the end is cut, It is possible to prevent the breakage of the panel which may occur during the post process and to reduce the core area.

Description

Plasma display panel {Plasma display panel}

1 is a process chart for explaining a manufacturing process of a conventional multi-plasma display panel.

2 is a perspective view of a conventional multi-plasma display panel.

3A and 3B are cross-sectional views of the portion A of FIG. 2.

4 is a process chart for explaining a manufacturing process of a multi-plasma display panel according to an embodiment of the present invention.

5a to 5c is a view for explaining a cutting and polishing method of the side of the sealed exhaust panel according to the present invention.

6a to 6c is an exemplary view of cutting and polishing according to a first embodiment of the present invention.

7a to 7c is an exemplary cutting and polishing process according to a second embodiment of the present invention.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display panel, and more particularly, to prevent panel breakage by cutting and polishing a sealant which forms a cutting surface of a glass substrate of a plasma display panel or a sealant that forms a core region between panels in a multi-plasma display. It is a technology that can.

In general, a plasma display panel (PDP) is an element that displays an image by light during plasma discharge for each unit cell.

The conventional plasma display panel has a structure in which a front substrate and a rear substrate are overlapped and encapsulated. In order to form a large screen, the plasma display panel is joined to the horizontal and vertical directions to form a multi-plasma display panel.

A manufacturing process of the conventional multi-plasma display panel will be described with reference to FIG. 1.

After cutting the glass substrate to a predetermined size, a front substrate is manufactured by forming a holding and scanning electrode on the cut glass substrate (S1), and forming a barrier rib and an address electrode on the other cut glass substrate on the rear surface. A substrate is prepared (S2).

The front panel and the rear substrate thus manufactured are overlapped and sealed in a sealed structure to manufacture a display panel (S3). A plurality of such display panels are connected and assembled to form a multi-plasma display panel forming a large screen (S4).

At this time, in the step S1, the cut surface of the glass substrate cut to a predetermined size has a problem, there is a problem that cracks and tears occur.

That is, in the conventional multi-plasma display panel, when the glass substrate is cut, the cut surface and the corner portion thereof are not smooth, so that the edge portion may be broken by a stopper or the like when the process moves to a later process, and the edge portion thereof is an FPC. There is a problem that can be in contact with the short (short) phenomenon occurs.

This problem also occurs in the cut surface of the glass substrate of the electrode lead-out.

In the case of the electrode lead-out unit, an FPC for inputting an electrical signal of a PCB substrate to a panel is thermocompressed, and then an aging process is performed. In particular, if there are minute defects in the glass surface of the electrode lead-out part during the process of applying heat such as thermocompression and aging, the glass substrate is easily broken.

In addition, a so-called 'multi-facet' technique has been developed that forms a plurality of functional layers in a single large substrate and cuts them to manufacture a plurality of front and rear substrates. The above problem also occurs in the manufacturing method of the panel.

Meanwhile, in the step S3, a sealant is applied to the side where the front substrate and the rear substrate are aligned to seal the front substrate and the rear substrate, which is different from a single plasma display in the case of a multi-plasma display panel. In order to reduce the area of contact between the panels as much as possible, the substrate is cut so that the application part of the sealant is extremely narrow, so that the sealant is applied to the sides of the front and rear substrates and sealed. Nevertheless, the sealant causes a gap between the panel assembled for the large screen configuration and the panel gap, thereby increasing the core area (non-light emitting area) of the large screen. To describe this problem in more detail, reference is made to FIGS. 2, 3A, and 3B.

FIG. 2 is a perspective view of a conventional multi-plasma display device, wherein when the four display panels 10 to 40 are connected to each other to form a large screen, the front substrate 1 and the rear substrate 3 are sealed and manufactured. 10 shows a state in which the panel 20 is connected. Here, the core region A is present in the display region forming the large screen, and the larger the size of the core region A is, the larger the non-light-emitting region of the display device is, which results in deterioration of image quality.

3A and 3B illustrate the problem of the core region A of FIG. 2 in more detail.

As shown in Figs. 3a and 3b, the panel and the panel are connected to form a large screen, where the sealant 5 is used to seal the side of each panel.

However, the sealant 5 is applied to protrude in a hemispherical shape on the front side surface of the panel or a part of the side surface of the panel as shown in FIG. 3B, as shown in FIG. .

Accordingly, the sealant 5 forms a core region, which is located between the panels constituting the large screen, so that the larger the area, the lower the display state.

An object of the present invention for solving the above problems is to reduce the damage of the panel by cutting and polishing the cut surface of the glass substrate of the seam region and the electrode lead-out portion used in the multi-plasma display panel.

In addition, another object of the present invention is to reduce the core area by narrowing the gap between panels by cutting and polishing the sealant of the core area between the panels constituting the large screen.

In order to achieve the above object, the present invention provides a multi-plasma display panel in which a plurality of panels formed by sealing and exhausting the front substrate and the rear substrate are connected to each other to form a large screen. A sealant for sealing and connecting the sealant is applied and protruded, and the protruding end of the sealant is processed by cutting or polishing to reduce the thickness thereof.

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The above and other objects and features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

4 is a flowchart illustrating a manufacturing process of a multi-plasma display panel according to an exemplary embodiment of the present invention.

In the present invention, a step (S10) of manufacturing a front substrate and a step (S20) of manufacturing a rear substrate are performed separately.

Each step (S10, S20), and after cutting the glass substrate to a predetermined size to form a holding and scanning electrode or the like or a partition wall and an address electrode on each cut glass substrate (S11, S21), Cutting the cut surface of the glass substrate in the same shape as the embodiments of Figures 5a to 5c to be described later, or the step of polishing using a soft cloth, abrasive stone, abrasive cloth and the like (S12, S22).

Through the steps S10 and S20, the front substrate and the rear substrate are aligned, and then the sealant is coated and sealed and the panel is manufactured (S30). The sealant protruding to the side of the panel produced in step S30 is cut and polished to the shape and size of the embodiment of Figures 6a to 7c to be described later (S40). The panels which have passed through the above-described steps are assembled with each other to form a large screen (S50).

5A to 5C illustrate embodiments of steps S12 and S22 of FIG. 4, and illustrate cutting and polishing of the cut substrate and the glass substrate of the electrode lead-out unit according to the present invention.

FIG. 5A shows an embodiment of a shape in which panel breakage is prevented by cutting two upper and lower corner portions of the glass substrate cut surface 7 respectively to remove sharp portions.

FIG. 5B shows an embodiment in which the top and bottom edges of the glass substrate cut surface 7 are polished in a round shape using a soft cloth, abrasive stone, abrasive cloth, or the like to remove a sharp portion to prevent panel breakage.

FIG. 5C shows an embodiment in which the upper and lower two corner portions of the glass substrate cut surface 7 are removed by cutting and polishing, and the side ends are cut and polished by a predetermined width.                     

By cutting and polishing the cut surface of the glass substrate of the core region and the electrode lead-out portion as described above, cracks and fine defects of the cut surface of the glass substrate are removed, and as a result, external thermal and mechanical shocks are not damaged.

6A to 6C and 7A to 7C show examples of performing step S40 of FIG. 4.

6A to 6C are exemplary views illustrating cutting and polishing processes according to the first embodiment of the present invention.

6A to 6C show a case in which the sealant 5 is applied to the entire end surface of the panel and protrudes, and FIG. 6A shows an example of cutting a predetermined width of the protruding portions of the sealant 5.

FIG. 6B illustrates an example in which a sharp cut surface is cut in FIG. 6A and polished using an abrasive, abrasive stone, or the like.

FIG. 6C shows the case of joining the cut and polished panels through FIGS. 6A and 6B. The panel spacing D of FIG. 6C has a width narrower than the width of the panel spacing B of the conventional FIG. 3A.

7A to 7C illustrate cutting and polishing examples according to a second embodiment of the present invention, and are examples for reducing the width of a core region.

7A to 7C are examples of cutting and polishing when the sealant is not applied to the side surface of the panel but only a part thereof, and the panel gap E of FIG. 7C is cut compared to the panel gap C of the conventional FIG. 3B. It is as narrow as it is wide.                     

7A to 7C are the same cutting and polishing processing methods as described above with reference to FIGS. 6A to 6C, and thus a detailed description thereof will be omitted.

As described above, the core area of the panel can be reduced by cutting and polishing the sealant on the side of the panel forming the core area of the large screen to reduce the gap between the panels.

As described above, according to the present invention, the panel may be damaged during post-processing by cutting and polishing a sealant that forms a core region between glass substrates of a plasma display panel or a panel in a multi-plasma display. Can be prevented.

In addition, when the panel and the panel are connected to form a large screen, by cutting and polishing the protrusion of the sealant (sealant) applied to the side of the panel has an effect that can improve the image quality by reducing the core area.

In addition, a preferred embodiment of the present invention is for the purpose of illustration, those skilled in the art will be able to various modifications, changes, substitutions and additions through the spirit and scope of the appended claims, such modifications and changes are the following claims It should be seen as belonging to a range.

Claims (11)

delete delete delete delete delete In the multi-plasma display panel that is formed by sealing a plurality of panels formed by sealing and exhausting the front substrate and the rear substrate, Each side of the panel is connected to each side of the sealant for sealing and connecting each panel is applied and protruded, the protruding end of the sealant is processed by a method of cutting or polishing to reduce the thickness thereof Display panel. The method of claim 6, And a protruding end portion of the sealant has a shape in which upper and lower edges are cut at an acute angle, respectively. The method of claim 6, The protruding end of the sealant has a round polished shape. The method of claim 6, And a protruding end portion of the sealant has a shape in which a side end portion is further cut and removed in a state where upper and lower edges are cut at an acute angle, respectively. The method of claim 6, And a protruding end portion of the sealant has a shape in which a side end portion is further polished in a state where upper and lower edges are cut and removed to form an acute angle, respectively. delete

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