KR200234998Y1 - Plasma Display Panel Device - Google Patents

Abstract

The present invention relates to a plasma display panel device, and more particularly, to a plasma display panel device having improved alignment efficiency between a flexible printed circuit and a drive module. The plasma display panel device of the present invention includes a first alignment mark of a predetermined form on the flexible printed circuit, and a second alignment mark on the drive module portion corresponding to the first alignment mark. Here, the first alignment mark is composed of a cross mark and a circular dotted mark surrounding the second mark, and the second alignment mark is composed of a circular hole and a circular dotted hole surrounding the mark.

Description

Plasma display panel device

The present invention relates to a plasma display panel device, and more particularly, to a plasma display panel device having improved alignment efficiency between a flexible printed circuit and a drive module.

Plasma Display Panel (PDP), which is one of the flat panel display devices, is a display device that uses gas discharge, and can be manufactured with a relatively thin thickness. In addition, the present invention is emerging as a next-generation display device due to the advantage of being able to reduce the size of the display device and easily manufacturing a large display device.

Like the liquid crystal display device, the PDP device operates by receiving a predetermined driving signal from the drive module 3 provided on the outside of the panel 1, and the panel 1 and the drive module 3 have circuit patterns. Electrically printed by a flexible printed circuit (FPC) 2 (see FIG. 1).

However, such a PDP device has a transparent panel while the FPC is translucent and the drive module is opaque. Therefore, matching the alignment mark formed on the transparent panel with the alignment mark formed on the translucent FPC is difficult. Although the panel is relatively easy due to its transparency, it is very difficult to match the alignment mark formed in the FPC with the alignment mark formed in the drive module because there is no transparency in any one member.

In addition, this problem has a problem that causes a decrease in the production yield because the panel becomes more advanced as the resolution of the panel progresses.

In addition, the degree of alignment between the members is usually performed by using an alignment check camera, wherein the degree of alignment between the panel and the FPC is checked at the bottom of the panel, but between the FPC and the drive module, In order to check the alignment between the panel and the FPC and the FPC and the drive module, two alignment check cameras are required, because the alignment degree needs to be checked from their side, thus increasing the cost of the equipment. There was a problem.

Accordingly, the present invention has been made to solve the above problems, and the object of the present invention is to improve the degree of alignment between the FPC and the drive module by providing predetermined alignment marks, respectively.

1 is a view for explaining a conventional plasma display panel device;

2 and 3 are views illustrating a first alignment mark formed in the flexible printed circuit and a second alignment mark provided in the drive module according to an embodiment of the present invention.

4 is a view for explaining a method of forming a second alignment mark according to another embodiment of the present invention.

5A and 5B are views for explaining a method of manufacturing a plasma display panel device according to an embodiment of the present invention.

6 is a plan view showing a panel to which a plurality of flexible printed circuits are attached according to an embodiment of the present invention.

7 is a plan view illustrating a plasma display panel device in which a panel and a drive module are electrically coupled using a flexible printed circuit using an alignment mark according to an embodiment of the present invention.

(Explanation of symbols for the main parts of the drawing)

11: cross mark 12: circular dotted mark

20: first alignment mark 21: circular hole

22: circular dotted hole 30: second alignment mark

40: metal film 100: panel

200: flexible printed circuit 300: drive module

In order to achieve the above object, the present invention includes a first alignment mark of a predetermined form in the FPC, and a second alignment mark is provided in the drive module portion corresponding to the first alignment mark. Here, the first alignment mark is composed of a cross mark and a circular dotted mark surrounding the second alignment mark, and the second alignment mark is composed of a circular hole (Hole) and a circular dotted hole surrounding the first alignment mark so as to be exposed.

According to the present invention, the FPC is provided with a first alignment mark in the form of a pattern, and the drive module portion corresponding to the first alignment mark is provided with a second alignment mark in the form of a hole exposing the first alignment mark. The degree of alignment of the liver can be easily seen on the lower surface of the drive module.

(Example)

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

2 and 3 illustrate an alignment mark according to an embodiment of the present invention, FIG. 2 illustrates a first alignment mark formed in the FPC, and FIG. 3 illustrates a second alignment mark formed in the drive module. Figure is a diagram.

Referring to FIG. 2, the FPC portion to be coupled to the drive module is provided with a first alignment mark 20 as shown. The first alignment mark 20 includes a cross mark 11 and a circular dotted mark 12 surrounding the cross mark 11, where the cross mark 11 is the same as the alignment mark provided in the conventional FPC, but the circular dotted mark 12 is further provided for more accurate alignment with the drive module.

Referring to FIG. 3, the second alignment mark 30 is provided in the drive module portion corresponding to the first alignment mark, and the shape is the same as the first alignment mark, and is provided in the form of a hole. That is, a circular hole 21 for exposing the cross mark of the first alignment mark is formed inside, and a circular dotted hole for exposing the circular dotted line mark of the first alignment mark is formed outside the circular hole 21. 22) is arranged.

In the above, since the second alignment mark in the form of a hole is formed by drilling a hole in the plastic drive module, some errors may occur in this process. Therefore, in order to more precisely form the hole-aligned second alignment mark, as shown in FIG. 4, in a state where a predetermined metal film 40 is coated on a portion of the drive module 300 to form the second alignment mark. The second alignment mark 30 may be formed of the circular hole 21 and the circular dotted hole 22.

Hereinafter, an FPC and a panel on which first and second alignment marks are formed and a coupling method between the FPC and the drive module will be described with reference to FIGS. 5A and 5B.

First, as shown in FIG. 5A, in a state where the FPC 200 is positioned so that one end is overlapped on an edge portion of the panel 100, an alignment mark of the panel (not shown) and an alignment mark of the FPC (not shown). Align accurately using the transparency of the panel 100, and then combine them through a thermocompression process. Here, the panel 100 has a predetermined alignment mark, for example, a cross alignment mark, formed on the edge portion thereof, as in the prior art, and the FPC 200 has one side lower surface corresponding to the cross alignment mark formed in the panel. The cross alignment mark having the same shape as the cross alignment mark formed on the panel is formed, and the above-described first alignment mark is formed on the other lower surface to be coupled to the drive module. Therefore, when the panel 100 and the FPC 200 are combined, their respective cross-shaped alignment marks are exactly matched using an alignment check camera at the bottom surface of the panel 100, and then they are joined by a thermocompression bonding process. .

Then, the above process is repeatedly performed to attach a plurality of FPCs 200 to the edge portion of the panel 100. (See FIG. 6).

Subsequently, as shown in FIG. 5B, in a state in which the drive module 300 is positioned on the lower surface of the other end of the FPC that is not coupled to the panel, the second alignment mark provided in the drive module 300 is used. The first alignment mark (not shown) formed on the FPC coincides with the second alignment mark. Here, since the second alignment mark is in the form of a hole, and the first alignment mark is in the same pattern form as the second alignment mark, a circular hole is formed on the lower surface of the drive module by using the alignment confirmation camera as in the case of the alignment between the panel and the FPC. The first alignment mark made up of a cross mark and a circular dotted line mark is positioned on the second alignment mark formed of a circular dotted line hole. Then, the thermocompression bonding process is performed to couple the FPC 200 and the drive module 300 which are correctly aligned.

The process is then repeated to attach the drive module to each of the FPCs attached to the edge of the panel (see FIG. 7).

In the above, by providing the alignment mark in the form of a hole in the drive module, and aligning the FPC and the drive module using the alignment mark in the form of a hole, an alignment efficiency equal to the degree of alignment between the panel and the FPC can be obtained. In addition, the alignment between the panel and the FPC and the FPC and the drive module can be checked in the same direction, i.e., under the alignment confirmation camera, so that the alignment between each member can be accurately confirmed even with one device. .

As described above, the PDP device of the present invention further includes a circular dotted mark on the FPC, and the drive module includes an alignment mark in the form of a hole to align the FPC and the drive module through this, thereby improving the degree of alignment between them. Can be.

In addition, since the alignment between the panel and the FPC and the FPC and the drive module can be checked in the same direction, even one alignment checking camera can check the alignment between the members, thereby reducing the cost of the equipment. Can be reduced.

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. Therefore, hereinafter, the scope of the utility model registration request can be understood to include all modifications and variations as long as they fall within the true spirit and scope of the present invention.

Claims (3)

A plasma display panel device comprising a plasma display panel, a printed circuit board for applying a predetermined driving signal to drive the plasma display panel, and a flexible printed circuit electrically connecting the plasma display panel and the printed circuit board. , The flexible printed circuit has a first alignment mark formed of a cross mark and a circular dotted mark surrounding the cross mark at a portion attached to the drive module, and a circular hole and the hole in the drive module portion corresponding to the first alignment mark. And a second alignment mark formed of a circular dotted line hole surrounding the circular hole. The method of claim 1, wherein the cross mark of the first alignment mark and the circular hole of the second alignment mark, and the circular dotted line mark of the first alignment mark and the circular dotted hole of the second alignment mark are the same shape and size. Plasma display panel device. The plasma display panel device of claim 1, wherein a predetermined metal film is coated on a portion where the second alignment mark is to be formed.