KR100637145B1 - Plasma display device - Google Patents

Abstract

According to the present invention, a plasma display device is disclosed. The plasma display apparatus is interposed between a plasma display panel in which an image is implemented, a chassis base disposed opposite to the plasma display panel, and a plasma display panel and a chassis base, and a heat dissipation sheet coupled to the chassis base by a mechanical fastening method. It includes. According to the disclosed plasma display apparatus, a plasma display apparatus can be easily separated, the recycling of separated components can be improved, and the heat dissipation performance can be improved.

Description

Plasma display device

1 is a state diagram of a combination of a plasma display panel and a chassis base according to the prior art,

2 is an exploded perspective view showing a plasma display device according to an embodiment of the present invention;

3 is a cross-sectional view of the plasma display device shown in FIG. 2;

4 and 5 are cross-sectional views showing a heat radiation sheet that can be employed in the plasma display device of the present invention,

6 is a perspective view illustrating a heat dissipation sheet that may be employed in a plasma display device according to another embodiment of the present invention;

7 is a cross-sectional view of a plasma display device having a heat dissipation sheet of FIG. 6;

8 is an exploded perspective view showing a plasma display device according to another embodiment of the present invention;

9 is a cross-sectional view illustrating the plasma display device of FIG. 8.

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

10 ... first panel 20 ... second panel

30 ... plasma display panel 35 ... adhesive layer

40 ... heat-resistant sheet 40a ... fastening part

40a` ... jamming hole 41 ... thermal conductive material

42 ... pore 50 ... chassis base

50a ... Guide pin 51 ... Reinforcement

61 ... circuit board 62 ... wiring

63.Driver

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display device. More particularly, the present invention relates to a plasma display device in which separation of the device is facilitated, recyclability of separated components is improved, and heat dissipation performance is improved. will be.

The plasma display device is a flat panel display device that displays an image using a gas discharge phenomenon, and is excellent in various display capacities such as display capacity, brightness, contrast, afterimage, and viewing angle. In addition, it is attracting attention as a next-generation flat panel display device that can replace a CRT because of its thin and large-screen display.

1 is a perspective view illustrating a coupling relationship between a plasma display panel and a chassis base according to the related art.

Referring to the drawings, the plasma display panel 130 having the first panel 110 and the second panel 120 bonded to each other is provided with the chassis base 150 via the face tape 145 and the heat dissipation sheet 140. Combined. In addition, although not shown in the drawings, a driving element and a wiring for driving the panel 130 are installed on the rear surface of the chassis base 150.

Here, conventional heat dissipation sheet 140 is used, such as silicon glass, silicon heat dissipation sheet, acrylic heat-resistant pressure-sensitive adhesive sheet. However, since the thermal conductivity of the conventional heat dissipation sheet 140 is only about 1 W / mK, the problem of deterioration of heat dissipation performance occurs.

On the other hand, if a defect occurs in the chassis base 150 or a driving element or wiring installed on the rear surface, the chassis base 150 and the panel 130 are separated so that the relatively expensive panel 130 can be recycled. do.

This separation is performed by separating the panel 130 and the chassis base 150 by inserting a thermal process and a spatula to heat the display device at a high temperature of 250 degrees or more to remove the adhesiveness of the double-sided tape 145. .

However, since the separation operation proceeds at a high temperature, not only the working environment is poor, but also due to the adhesive force of the double-sided tape 145 and the heat dissipation sheet 140, a locally non-separated portion exists, and the panel Heat dissipation sheet 140 and the like remaining on the 130 takes a lot of time and effort to separate the panel 130, such as scraping with a knife one by one, there is a problem that its workability is poor.

In addition, when the panel 130 is damaged during such a separation operation, there is a problem that the repair itself is impossible or if the repair is required.

In addition, since the chassis base 150 and the double-sided tape 145 and the heat dissipation sheet 140 separated by the separating operation are not recycled and discarded, resources are wasted and industrial waste is increased.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems and other problems, and an object thereof is to provide a plasma display device in which the separation operation of the device is easily performed and the recycling of the separated components is improved. .

Another object of the present invention is to provide a plasma display device in which heat dissipation of a plasma display panel is promoted and luminance characteristics are improved.

It is still another object of the present invention to provide a plasma display device in which a plasma display panel is effectively protected and driving noise is reduced.

In order to achieve the above object, the plasma display device of the present invention,

A plasma display panel on which an image is implemented;

A chassis base disposed to face the plasma display panel; And

It is interposed between the plasma display panel and the chassis base, and includes a heat dissipation sheet coupled to the chassis base by a mechanical fastening method.

Here, it is preferable that a plurality of pores are formed in the heat dissipation sheet, and a fastening portion coupled to the chassis base is formed.

In addition, the heat dissipation sheet is preferably provided with one thermally conductive material selected from the group consisting of Al, Cu, Ag, Ni.

On the other hand, a screw hole is formed in the fastening portion, the heat dissipation sheet may be screwed to the chassis base.

In this case, the fastening part may be integrally formed with the heat dissipation sheet, or may be separately formed and press-fit into the heat dissipation sheet.

In addition, a locking hole is formed in the fastening part, a guide pin corresponding to the locking hole is formed in the chassis base, and the heat dissipation sheet may be hooked to the chassis base.

In this case, the fastening part may be hinged to the heat dissipation sheet.

Hereinafter, a plasma display device according to an exemplary embodiment of the present invention will be described in detail.

2 illustrates a plasma display device according to an exemplary embodiment of the present invention, and FIG. 3 illustrates a cross-sectional view of the plasma display device shown in FIG. 2.

Referring to the drawings, the plasma display apparatus includes a plasma display panel 30 on which an image is implemented, and a chassis base 50 disposed to face the panel 30, and the panel 30 and the chassis base 50. It includes a heat dissipation sheet 40 interposed between).

The plasma display panel 30 is provided with a first panel 10 and a second panel 20 bonded to each other.

Since the chassis base 50 serves as a heat sink of the display panel 30, the chassis base 50 may be formed of an Al material having excellent thermal conductivity. In addition, the chassis base 50 serves as a supporting structure of the panel 30 provided with a glass material, and, for strength reinforcement, as shown in FIG. 2, a bent portion may be provided at a corner thereof. The reinforcement 51 may be further provided.

The chassis base 50 has a drive element 63 for applying a drive signal to the panel 30, a circuit board 61 on which a plurality of circuit elements are mounted, and a wire connecting the drive element 63 and the panel 30. 62 is provided.

The heat dissipation sheet 40 is provided with a thermally conductive material including a plurality of pore structures, the fastening portion (40a) is not formed in the edge of the pore structure.

4 and 5, the heat dissipation sheet 40 having a plurality of pores 42 has a sponge structure (see FIG. 4) or a thermally conductive material in which pores 42 are formed inside the thermally conductive material 41. The 41 may be provided as a network structure (see FIG. 5) forming a network structure. Here, the pores 42 formed as described above serve to provide flexibility or buffering property to the heat dissipation sheet 40. Therefore, the heat dissipation sheet 40 may more effectively protect the panel 30 by absorbing vibrations generated during the movement or distribution of the product, and may reduce external noise by blocking vibrations generated during driving.

In addition, air may flow into the heat dissipation sheet 40 through the pore 42 structure, thereby facilitating heat dissipation by natural convection.

The heat dissipation sheet 40 is provided with a thermally conductive material, it may be provided with Al, Cu, Ag, Ni and the like. For example, the Al material has a high thermal conductivity of about 150 ~ 230W / mK, the heat dissipation sheet 40 provided with such a high thermal conductivity material quickly diffuses heat generated from the panel 30 in the plane direction It plays a role. Therefore, the brightness of the panel 30 can be reduced, the temperature distribution can be improved uniformly, and the luminance characteristics can be improved.

On the other hand, the heat dissipation sheet 40 is bonded to the panel 30 surface by the adhesive layer 35. In addition, the heat dissipation sheet 40 is coupled to the chassis base 50 by a mechanical fastening method, for example, screwing, for which a fastening portion 40a is formed along its edge.

As shown in FIG. 2, the fastening part 40a having no pore structure is provided in a substantially rectangular frame shape and has a screw hole that is coupled to the chassis base 50.

Referring to FIG. 3, the screw penetrating the chassis base 50 is fastened to the screw hole, whereby the heat dissipation sheet 40 and the chassis base 50 are fastened.

As such, when the heat dissipation sheet 40 and the chassis base 50 are coupled in a mechanical fastening manner, when separation due to rework is required, by simply removing the mechanical fastening state, for example, the fastened screw may be removed. By loosening, the chassis base 50 can be easily separated. Here, the heat dissipation sheet 40 is separated from the chassis base 50 in a state of being bonded to the panel 30.

Figure 6 shows a heat dissipation sheet that can be employed in another embodiment of the present invention. A plurality of pores 42 (see FIGS. 4 and 5) are formed in the heat dissipation sheet 40, and the heat dissipation sheet 40 may be provided in a structure as shown in FIGS. 4 and 5.

As can be seen in the figure, the fastening portion 40a coupled to the chassis base 50 is press-fitted into the heat dissipation sheet 40. Here, the fastening portion 40a may be provided as a cylindrical member having a screw hole.

FIG. 7 is a cross-sectional view of the plasma display device including the heat dissipation sheet of FIG. 6. Referring to the drawings, the heat dissipation sheet 40 is bonded to the surface of the panel 30 by the adhesive layer 35, and is coupled to the chassis base 50 by a mechanical fastening method. As shown in FIG. 7, the heat dissipation sheet 40 may be fastened to the chassis base 50 by being coupled to a screw hole formed in the fastening part 40a by a screw passing through the chassis base 50.

On the other hand, the fastening portion 40a is provided in a separate structure from the heat dissipation sheet 40 may be pressed into the heat dissipation sheet 40, and may also be provided as a unitary structure with the heat dissipation sheet 40, of course. to be.

8 illustrates a heat dissipation sheet that may be employed in another embodiment of the present invention. Referring to the drawings, the heat dissipation sheet 40 is provided with a plurality of pores (42, 4, 5), the fastening portion 40a is hinged to the upper and lower portions are formed. In addition, a locking hole 40a` is formed in the fastening portion 40a, and a guide pin 50a is formed in the bent portion of the chassis base 50 corresponding to the locking hole 40a`.

9 is a cross-sectional view of the plasma display device shown in FIG. 8. Referring to the drawings, the heat dissipation sheet 40 is bonded to the surface of the panel 30 by the adhesive layer 35, and is bonded to the chassis base 50 by mechanical fastening. In more detail, the heat dissipation sheet 40 rotates the fastening portion 40a hinged to one side thereof, such that the guide pin 50a having the engaging hole 40a` formed in the fastening portion 40a is formed at the bent portion. To be coupled to the chassis, it may be coupled to the chassis base (50).

The heat dissipation sheet 40 hooked to the chassis base 50 may solve the fastening state by simply rotating the fastening part 40a in the reverse direction. Therefore, when the separation is required by the rework, such a separation job can be easily made. In this case, the heat dissipation sheet 40 is separated while being bonded to the panel 30.

According to the present invention, by assembling the plasma display device by a mechanical fastening method, when separation is required due to a defective circuit part installed on the chassis base or its rear surface, time and effort required for separation work are reduced, and workability This is improved.

In particular, since the separated chassis base or heat dissipation sheet can be recycled, industrial waste can be reduced, and an environment-friendly product can be provided.

In addition, since the heat dissipation sheet is made of a material having excellent thermal conductivity, the heat dissipation performance of the plasma display apparatus is improved. In particular, the temperature distribution of the panel is uniformly improved, thereby improving the luminance characteristic.

In addition, through the pore structure provided in the heat dissipation sheet, the air can be introduced, thereby facilitating heat dissipation by natural convection. In addition, the pore structure provides cushioning or flexibility to the heat dissipation sheet, thereby more effectively protecting the panel and blocking driving noise.

Although the present invention has been described with reference to the embodiments illustrated in the accompanying drawings, it is merely exemplary, and various modifications and equivalent other embodiments are possible from those skilled in the art to which the present invention pertains. You will understand the point. Therefore, the true scope of protection of the present invention should be defined by the appended claims.

Claims (8)

delete delete delete delete A plasma display panel on which an image is implemented; A chassis base disposed to face the plasma display panel; And Is interposed between the plasma display panel and the chassis base, the fastening portion is formed to be coupled to the chassis base in a mechanical manner, and includes a heat dissipation sheet having a plurality of pores, And the fastening part is integrally formed along the edge of the heat dissipation sheet and screwed to the chassis base. A plasma display panel on which an image is implemented; A chassis base disposed to face the plasma display panel; And Is interposed between the plasma display panel and the chassis base, the fastening portion is formed to be coupled to the chassis base in a mechanical manner, and includes a heat dissipation sheet having a plurality of pores, The fastening part is a plasma display device, characterized in that the member is formed with a screw hole pressed into the heat dissipation sheet. A plasma display panel on which an image is implemented; A chassis base disposed to face the plasma display panel; And Is interposed between the plasma display panel and the chassis base, the fastening portion is formed to be coupled to the chassis base in a mechanical manner, and includes a heat dissipation sheet having a plurality of pores, A locking hole is formed in the fastening part, a guide pin corresponding to the locking hole is formed in the chassis base, and the heat dissipation sheet is hooked to the chassis base. The plasma display apparatus of claim 7, wherein the fastening portion is hinged to the heat dissipation sheet.

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