KR100590092B1 - A plasma display apparatus - Google Patents

Abstract

Plasma display device of the present invention is to ensure the rigidity and surface flatness of the bending load and torsional load in the press type chassis base, the plasma display panel, the thermal conductive sheet attached to one side of the plasma display panel, the thermal conductivity And a chassis base attached to the sheet-side plasma display panel and formed in a flat state, and a reinforcement member formed to be coupled to at least one end of each edge of each side of the chassis base in the longitudinal direction thereof.

Plasma display, chassis base, reinforcement, reinforcement, coupling

Description

Plasma Display Device {A PLASMA DISPLAY APPARATUS}

1 is a schematic exploded perspective view of a plasma display device according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the first exemplary embodiment in which the plasma display device of FIG. 1 is assembled and cut along the line A-A.

3 is an exploded perspective view illustrating the reinforcing member from the chassis base of FIG. 2.

FIG. 4 is a cross-sectional view of the second exemplary embodiment in which the plasma display device of FIG. 1 is assembled and cut along the line A-A.

FIG. 5 is a cross-sectional view of the third exemplary embodiment in which the plasma display device of FIG. 1 is assembled and cut along the line A-A.

FIG. 6 is a cross-sectional view of the fourth exemplary embodiment in which the plasma display device of FIG. 1 is assembled and cut along a line A-A.

FIG. 7 is a cross-sectional view of the fifth exemplary embodiment in which the plasma display device of FIG. 1 is assembled and cut along the line A-A.

FIG. 8 is a cross-sectional view of the sixth exemplary embodiment in which the plasma display device of FIG. 1 is assembled and cut along the line A-A.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display device, and more particularly, to a plasma display device for securing rigidity and surface flatness against bending or torsional loads in a press type chassis base.

The plasma display device generates a plasma by gas discharge and displays the image using the plasma (Plasma Display Panel, hereinafter referred to as 'PDP'), a chassis base supporting the PDP, and the chassis base. A plurality of driving circuit boards mounted on the opposite side of the PDP are connected to a display electrode or an address electrode located inside the PDP through a flexible printed circuit (FPC) and a connector or a tape carrier package (TCP). Equipped.

The PDP seals two glass substrates in a face-to-face structure to form a discharge space therein, so that the mechanical rigidity against impact is weak. In order to ensure the mechanical rigidity of this PDP, the chassis base must have sufficient rigidity against bending or torsional loads.

In addition, the chassis base must maintain a high flatness of the surface so that the chassis base is in close contact with the PDP through a thermal conductive sheet for heat dissipation of the PDP. In addition, the chassis base may be formed to be light in weight to reduce the weight of the entire plasma display device.

By such a necessity, the chassis base which pressed the thin plate is used. In order to secure the rigidity against such loads, the thin press-type chassis base is banded at its end in an "L" shape and provided with a plurality of reinforcing members at appropriate positions on the rear surface thereof. As a result, the chassis base generally provides rigidity and light weight.

However, the reinforcing member is coupled to the driving circuit board side chassis base by screws or toxing despite securing the rigidity of the chassis base and implementing a light weight. Accordingly, the chassis base is partially deformed by the stress concentration applied to the end portion of the chassis base, thereby decreasing flatness. Therefore, the chassis base is subjected to a separate process to increase the flatness of the surface after the bending treatment and the reinforcing member is combined.

Accordingly, the present invention has been made to solve the above problems, and an object thereof is to provide a plasma display device that secures the rigidity and surface flatness against bending or torsional loads in a press type chassis base. .

In order to achieve the above object, the plasma display device according to the present invention includes a plasma display panel, a thermal conductive sheet attached to one side of the plasma display panel, and a chassis base attached to the thermal conductive sheet side plasma display panel and formed in a flat state. And a reinforcing member which is formed to be coupled to the front end of at least one side of the front end of each side of the chassis base in a lengthwise direction thereof.

The reinforcing members are preferably coupled to both long sides of the chassis base, respectively. The reinforcing member includes a coupling portion coupled to the front end of the chassis base and a reinforcement portion bent to the opposite side of the plasma display panel at the coupling portion, thereby securing the rigidity of the chassis base while maintaining the surface flatness of the chassis base at a high level. do.

The engaging portion of the reinforcing member is formed in a cross-section "U" shape, it can be coupled to the front end of the chassis base to support and reinforce the front end of the chassis base on both sides, in addition, the engaging portion and the chassis coupled thereto The tip of the base may be coupled by fastening members, ie screws or rivets.

The reinforcing member of the reinforcing member may have a staple-shaped cross-sectional structure that is open toward the plasma display panel at the tip of the coupling portion, and may have a cross-sectional structure of ““ ”shape from the tip of the coupling portion toward the opposite end of the chassis base. The front end of the coupling part may be formed in a cross-sectional structure having a "∠" shape inclined toward the front end of the plasma display panel.

In addition, the coupling portion of the reinforcing member is formed in the cross-section "┚" shape, it may be coupled to the front end of the chassis base to the fastening member to support and reinforce the front end of the chassis base to one surface. Even when the joining portion is formed in this way, the reinforcing portion of the reinforcing member may also be made of the staple-shaped cross section, the "" "shaped cross section, or the inclined" ∠ "shaped cross section structure as described above. have.

Meanwhile, an adhesive double-sided tape interposed between the plasma display panel and the chassis base and between the outer portion of the thermal conductive sheet and the coupling portion of the reinforcing member is interposed therebetween.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.

1 is a schematic exploded perspective view of a plasma display device according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of a first embodiment of the plasma display device of FIG. 1 assembled and cut along line AA. FIG. Is a partial perspective view showing the reinforcing member disassembled from the chassis base of FIG.

The plasma display device is provided with a PDP 11 for displaying an image by using gas discharge and a rear surface of the PDP 11 so that heat generated from the PDP 11 due to gas discharge is directed in the plane direction of the PDP 11. And a chassis base 15 attached to the PDP 11 on the heat conductive sheet 13 side.

Since the present invention relates to the coupling relationship between the above-described PDP 11 and its surrounding components, a detailed description of the configuration of the PDP 11 is omitted here. The PDP 11 can be configured in various ways and can be driven in various ways, and includes such PDPs.

As described above, the thermal conductive sheet 13 quickly conducts and dissipates heat generated in the PDP 11 due to the driving of the PDP 11 in the planar direction of the PDP 11, thereby balancing heat dissipation of the PDP 11. It is attached to the back side of the PDP 11 to realize. In addition, the thermal conductive sheet 13 may be formed of various materials, that is, silicon based thermal conductive sheet, urethane based thermal conductive sheet, acrylic based thermal conductive sheet, graphite based thermal conductive sheet, metallic based thermal conductive sheet, or carbon nanotube based thermal conductivity.

The chassis base 15 is attached to the rear side of the PDP 11 via the thermal conductive sheet 13, and typically supports the PDP 11 formed of glass material to reinforce the mechanical rigidity of the PDP 11. In addition, heat generated during the driving of the PDP 11 and conducted through the heat conductive sheet 13 is radiated to the air, thereby enabling stable driving of the PDP 11. Therefore, the chassis base 15 is preferably formed of a high thermal conductivity material such as aluminum and metal.

In addition, the driving circuit boards 16 for driving the PDP 11 are provided on the opposite side of the chassis base 15 to the PDP 11. The chassis base 15 is formed to ground the circuit formed on the driving circuit board 16 and to ground the electromagnetic interference (EMI) generated in the driving circuit board 16.

This chassis base 15 requires conditions that are in conflict with each other, such as having sufficient rigidity to support the PDP 11 and being made lightweight to reduce the weight of the entire apparatus. In order to satisfy these conditions, it is preferable that the chassis base 15 is formed in a flat state in which sheet metal is pressed. This flat shape facilitates the fabrication of the chassis base 15.

In addition to the PDP 11, the thermal conductive sheet 13, and the chassis base 15 described above, the plasma display device of the present invention has the flatness of the surface of the chassis base 15 while reinforcing the mechanical rigidity of the chassis base 15. It further includes a reinforcing member 17 to maintain a high level. Here, the high level of flatness means the first level of flatness supplied without deforming the material of the chassis base 15.

The reinforcing member 17 is formed at at least one end of at least one of the ends of each side of the chassis base 15 formed in a quadrangular shape by two long sides facing each other and two short sides formed at right angles thereto. It is provided, and is formed long in the longitudinal direction of these tips, and coupled to the tip, to ensure the rigidity against its bending load and torsional load on the chassis base 15 to which the PDP 11 is attached and supported. When the reinforcing member 17 is provided at both sides of each side of the chassis base 15, the reinforcing member 17 is advantageous for securing the rigidity of the chassis base 15, but is disadvantageous for the weight reduction of the entire apparatus, so both sides of the chassis base 115 are long. May only be combined).

As the reinforcing member 17 is formed separately from the chassis base 15 and coupled to the tip of the chassis base 15, the flatness of the surface of the chassis base 15 formed in a flat state is secured and maintained at an initial supply level. Yet, it reinforces the mechanical stiffness of the chassis base 15, which may be somewhat lacking in mechanical stiffness.

To this end, the reinforcing member 17 includes a coupling portion 17a coupled to the front end of the chassis base 15 and a reinforcement portion 17b bent from the coupling portion 17a to the opposite side of the PDP 11. . Since the engaging portion 17a of the reinforcing member 17 is coupled to the front end of the chassis base 15, the plurality of layers of the front end of the chassis base 15 without impairing the flatness of the chassis base 15 as described above. As a result, the rigidity of the chassis base 15 is reinforced without bending the tip of the chassis base 15. That is, the front end of the chassis base 15 forms a three-layer structure by the coupling portions 17a provided on both sides thereof, thereby increasing the rigidity against the bending or torsional load of the chassis base 15. . In addition, the reinforcing member 17 is formed to be bent to have a cross-section of various shapes to increase the cross-sectional area to have a rigidity to further strengthen the rigidity of the chassis base (15).

The reinforcing member 17 may be coupled to the front end of the chassis base 15 in various structures according to the shape of the coupling portion 17a. That is, the reinforcing member 17 may be mounted to the front end of the chassis base 15 by force fitting, and may be mounted as the fastening member 21 at the front end of the chassis base 15, and the interference fit and the fastening member In the case of mounting by (21), the fastening stability of both can be further improved. The fastening member 21 may be a screw, rivet, or toxing.

In the reinforcing member 17, the coupling portion 17a is a portion for directly coupling one side of the reinforcing member 17 to the tip of the chassis base 15, and the reinforcing portion 17b is a coupling portion ( 17a) together with the base of the chassis base 15 to enhance its mechanical rigidity.

Referring to the reinforcing member 17 acting in more detail, the coupling portion 17a of the reinforcing member 17 may be formed in a cross-section "U" shape as shown in Figs. The engaging portion 17a on the cross-section " U " has a stable structure at the tip of the chassis base 15, that is, a double-sided support structure. And the coupling portion 17a is preferably coupled to the front end of the chassis base 15 by interference fit, in addition to the fastening member 21 is more preferably fastened. A fastening hole 21a is provided at the front end of the coupling part 17a and the chassis base 15 so that the fastening member 21 is coupled. The fastening hole 21a is preferably formed as a screw hole when a screw is used as the fastening member 21.

2 and 3, the reinforcement part 17b may have a staple-shaped cross-sectional structure that is open toward the PDP 11 at the tip of the coupling part 17a. In addition, the reinforcing portion 17b forms a stable attachment structure of the driver IC 23 of the TCP 22, enabling heat dissipation of heat generated when the PDP 11 is driven. This TCP 22 is connected to the electrode 11a of the PDP 11 via the FPC 25, and applies a drive voltage to this electrode 11a.

The driver IC 23 mounted on the TCP 22 is reinforced by the cover plate 27 provided on the outside of the reinforcing member 17 so as to be in close contact with the reinforcing member 17b of the reinforcing member 17. It is pressed to the side. At this time, the thermal conductive material 29 is interposed on both sides of the driver IC 23. The thermal conductive material 29 prevents the formation of an air layer acting as a thermal resistance between the driver IC 23 and the reinforcing member 17 or between the cover plate 29. In addition, the thermally conductive material 29 may be formed of a material having excellent thermal conductivity so as to quickly conduct heat generated from the driver IC 23 to the reinforcing member 17 or the cover plate 27, and may be formed of a driver from external impact. It is preferable to be formed of a material capable of absorbing shock to prevent breakage of the IC 23. The thermally conductive material 29 may be made of thermal grease or silicon.

The second to sixth embodiments shown in FIGS. 4 to 8 below are similar to and identical in structure and effect to the first embodiment described above, and thus, each of these embodiments is the same as the first embodiment. The description will be omitted and different parts will be compared.

In the reinforcing member 17, the reinforcing portion 17b of Figs. 2 and 3 forms a staple-shaped cross-sectional structure, whereas the reinforcing portion 17b of Fig. 4 is a chassis at the tip of the engaging portion 17a. A cross-sectional structure of "" "shape is formed in the direction opposite to the tip of the base 15, and the reinforcement part 17b of FIG. 5 is inclined toward the tip of the PDP 11 at the tip of the coupling part 17a. It forms a cross-sectional structure of "shape.

Thus, comparing each of the embodiments with the reinforcement portion 17b of the embodiment of FIGS. 2 and 3, the reinforcement portion 17b of the second embodiment of FIG. 4 has a chassis base 17 as compared to the first embodiment described above. Although somewhat weak in the rigid reinforcement of the present invention, it has the advantage of reducing the weight of the entire plasma display device according to the present invention, and the reinforcing portion 17b of the third embodiment of FIG. 5 has an inclined shape as compared with the first embodiment described above. This has the advantage of shortening the length of the FPC 25 connecting the electrode 11a of the PDP 11 and the TCP 22.

6 to 8 are embodiments corresponding to FIGS. 3 to 5, respectively, and include reinforcing portions 17b having the same structure, respectively, and corresponding coupling portions 17a having different structures. It is provided. That is, since the reinforcement parts 17b of the fourth to sixth embodiments of FIGS. 6 to 8 are the same as the reinforcement parts 17b of the first to third embodiments, detailed description thereof will be omitted.

6 to 8, the engaging portion 17a of the reinforcing member 17 has a structure in which the engaging portion 17a has a cross-sectional “U” shape in the first to third embodiments. Compared with the above, there is a difference formed in the structure of the cross-section "┚" shape.

Therefore, the engaging portion 17a of the fourth to sixth embodiments supports and reinforces the front end of the chassis base 15 to one surface, and in order to firmly implement this supporting reinforcement structure, the engaging portion 17a and the chassis base 15 are supported. The front end is preferably coupled to the fastening members 21 described above.

The coupling portion 17a on the cross-section “┚” is illustrated in Figs. 6 to 8 provided at the side of the PDP 11 at the tip of the chassis base 15, but the chassis base 15 opposite to the PDP 11 is shown. It may be provided at the tip of the.

Meanwhile, the PDP 11 and the chassis base 15 are attached to each other with an adhesive double-sided tape 31. In other words, the double-sided tape 31 is located between the PDP 11 and the chassis base 15 and between the outer portion of the heat conductive sheet 13 and the coupling portion 17a of the reinforcing member 17.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications and changes can be made within the scope of the claims and the detailed description of the invention and the accompanying drawings. Naturally, it belongs to the scope of the invention.

As described above, according to the plasma display device according to the present invention, the outer portion of the thin press-type chassis base is formed on a flat plate without bending, and the reinforcing member manufactured separately from the chassis base is decomposed and coupled to the outside thereof. By combining as much as possible, there is an effect of maintaining the flatness of the chassis base surface at a high level while securing the rigidity of the chassis base through this reinforcing member.

Claims (13)

A plasma display panel; A thermal conductive sheet attached to one side of the plasma display panel; A chassis base attached to the thermally conductive sheet side plasma display panel and formed in a flat state; And And a reinforcement member formed to be coupled to at least one end of each side of each side of the chassis base in a length direction thereof. The method of claim 1, And the reinforcing members are respectively coupled to both long sides of the chassis base. The method of claim 2, The reinforcement member includes a coupling portion coupled to the front end of the chassis base, and a reinforcement portion bent from the coupling portion to the opposite side of the plasma display panel. The method of claim 3, wherein The coupling portion is formed in a cross-section "U" shape, the plasma display device is coupled to the front end of the chassis base by force-fitting to support and reinforce the front end of the chassis base on both sides. The method of claim 4, wherein And a front end of the coupling part and the chassis base coupled thereto is coupled to a fastening member. The method of claim 4, wherein And the reinforcing portion has a staple-shaped cross-sectional structure that is open toward the plasma display panel at the tip of the coupling portion. The method of claim 4, wherein And the reinforcing part has a cross-sectional structure having a "" "shape from the distal end of the coupling part toward the distal end of the chassis base. The method of claim 4, wherein And the reinforcing portion has a cross-sectional structure of a “∠” shape inclined from the tip of the coupling portion toward the tip of the plasma display panel. The method of claim 3, wherein The coupling portion is formed in a cross-sectional "┚" shape, the plasma display device is coupled to the fastening member to the front end of the chassis base to support and reinforce the front end of the chassis base to one surface. The method of claim 9, And the reinforcing portion has a staple-shaped cross-sectional structure that is open toward the plasma display panel at the tip of the coupling portion. The method of claim 9, And the reinforcing part has a cross-sectional structure having a "" "shape from the distal end of the coupling part toward the distal end of the chassis base. The method of claim 9, And the reinforcing portion has a cross-sectional structure of a “∠” shape inclined from the tip of the coupling portion toward the tip of the plasma display panel. The method of claim 3, wherein And a double-sided adhesive tape interposed between the plasma display panel and the chassis base and between the outer portion of the thermal conductive sheet and the coupling portion of the reinforcing member.

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