KR20060028069A - A plasma display device - Google Patents

Abstract

Plasma display device of the present invention is to effectively arrange and attach the thermal conductive sheet and the double-sided tape interposed between the plasma display panel and the chassis base, the plasma display panel, the thermal conductive sheet attached to one side of the plasma display panel, the outer conductive sheet outer A double-sided tape attached to one side of the plasma display panel, and a chassis base attached to the double-sided tape to support the plasma display panel at the heat conductive sheet side, wherein the chassis base is aligned to indicate an attachment position of the double-sided tape. Include the mark.

Plasma Display, Chassis Base, Thermal Conductive Sheet, Double Sided Tape, Align Mark

Description

Plasma Display Device {A PLASMA DISPLAY DEVICE}

1 is an exploded perspective view illustrating a disassembled plasma display device according to the present invention.

FIG. 2 is a front view of the chassis base according to the first embodiment of FIG. 1.

3 is a front view of a state in which a double-sided tape is attached to the chassis base of FIG.

4 is a front view of the chassis base according to the second embodiment of FIG. 1.

5 is a front view of the chassis base according to the third embodiment.

6 is a front view of a state in which a double-sided tape is attached to the chassis base of FIG.

7 is a front view of the chassis base according to the fourth embodiment.

FIG. 8 is a front view of a state in which a double-sided tape is attached to the chassis base of FIG. 7.

The present invention relates to a plasma display device, and more particularly, to a plasma display device for effectively arranging and attaching a heat conductive sheet interposed between a plasma display panel and a chassis base and a double-sided tape.

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

Since the PDP seals two glass substrates face to face and forms a discharge space therein, the mechanical resistance against impact is weak. Since the PDP generates heat during driving, the PDP is provided with a thermally conductive sheet on its rear surface. This thermally conductive sheet rapidly conducts and diffuses heat generated in the PDP in the planar direction.

When the chassis base is formed of a metal having high mechanical rigidity to support the PDP, the chassis base is attached to and supported by the double-sided tape. In addition to the function of maintaining the rigidity of the PDP as described above, the chassis base has a mounting support function of the driving circuit board, a heat sink function of the PDP, and electromagnetic interference (EMI). It is in charge of grounding function.

The heat conductive sheet is preferably formed as wide as possible on the back of the PDP for heat dissipation of the PDP, the double-sided tape is preferably formed to be firmly attached to the PDP and the chassis base while minimizing the degradation of the thermal conductive sheet.

Typically, the thermally conductive sheets are separated into three pieces and attached to the rear surface of the PDP, and the double-sided tape is formed in a band shape and attached to the rear surface of the thermally conductive sheet and between the neighboring thermally conductive sheets.

In order to facilitate the work of the double-sided tape, it is possible to widen the interval of the thermally conductive sheet, but in this case, the PDP generates bright afterimages due to the heat dissipation non-uniformity of the PDP. In addition, when the gap between the thermally conductive sheets is narrowed to remove the bright afterimage, and the PDP and the chassis base are combined, the thermally conductive sheet attached to the PDP and the double-sided tape attached to the chassis base may overlap.

In addition, in order to facilitate the workability of the double-sided tape and to prevent the overlap between the two sides, a heat conductive sheet is attached to the entire surface of the PDP, and a double-sided tape is attached to the entire surface of the chassis base so that the PDP and the chassis base are attached. Can be combined. In this case, the adhesive force of the double-sided tape does not act firmly on the PDP and the chassis base, thereby lowering the adhesion between the thermal conductive sheet and the PDP. As a result, the PDP causes bright afterimages due to poor heat dissipation.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object thereof is to provide a plasma display device for effectively arranging and attaching a heat conductive sheet and a double-sided tape interposed between a plasma display panel and a chassis base.

In addition, another object of the present invention is to provide a plasma display device that enables the operation while confirming the corresponding position of the thermal conductive sheet and the attachment position of the double-sided tape, thereby facilitating the attachment operation of the double-sided tape while minimizing the gap of the thermally conductive sheet. will be.

Plasma display device according to the present invention, a plasma display panel, a heat conductive sheet attached to one side of the plasma display panel, a double-sided tape attached to one side of the plasma display panel outside the heat conductive sheet, and the plasma display panel at the heat conductive sheet side And a chassis base attached to the double-sided tape to support the double-sided tape, wherein the chassis base includes an alignment mark indicating an attachment position of the double-sided tape.

The thermal conductive sheet is divided into a plurality of parts and attached to the rear surface of the plasma display panel with a gap therebetween, and the double-sided tape is divided into a band between the thermal conductive sheets and the outside of the thermal conductive sheet and attached between the rear surface of the plasma display panel and the chassis base. do.

The alignment mark is formed on a surface opposite to the plasma display panel of the chassis base, is formed on the chassis base corresponding to the thermal conductive sheets, and is intaglio formed on the chassis base.

The alignment mark is formed of "" "and" "" grooves corresponding to the shape of the tip of the double-sided tape, and can effectively correspond to the double-sided tape formed at right angles.

The alignment marks may be formed in pairs at positions corresponding to both ends in the longitudinal direction of the double-sided tape, and may be formed to correspond to both the double-sided tapes or to correspond to a portion of the double-sided tapes.

In addition, the alignment marks may be formed in pairs at positions corresponding to both ends of the diagonal direction of the double-sided tape, or may be formed at positions corresponding to both ends of the double-sided tape in the width direction.

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

1 is an exploded perspective view illustrating a disassembled plasma display device according to the present invention.

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. A thermally conductive sheet 13 for conducting diffusion, a double-sided tape 15 attached to one side of the PDP 11 outside the thermally conductive sheet 13, and a driving circuit electrically connected to the PDP 11 to drive the PDP 11. The substrate (not shown) and the chassis base 17 attached to the rear surface of the PDP 11 by the double-sided tape 15 at the side of the heat conductive sheet 13 and supporting the same, and supporting the driving circuit board by mounting on the rear surface thereof are supported. Include.

The PDP 11 is configured to display an image by using gas discharge. Since the present invention relates to the coupling relationship between the PDP 11 and other components, a detailed description of the configuration of the PDP 11 will be given here. Omit. Therefore, PDPs of various configurations and methods can be applied to the PDP 11.

As described above, the thermal conductive sheet 13 quickly conducts and dissipates heat generated in the PDP 11 in the planar direction of the PDP 11 to realize a heat dissipation balance of the PDP 11 so that a bright image can be removed. It is attached to the back surface of the PDP 11.

The thermal conductive sheet 13 may be provided in one sheet for heat dissipation balance of the PDP 11, but may be attached to the rear surface of the PDP 11, but the thermal conductivity is enhanced by strengthening the coupling force between the PDP 11 and the chassis base 17. The sheet 13 and the PDP 11 may be formed in plural, for example, three pieces so as to maintain a close contact state.

When the heat conductive sheet 13 is divided into a large number and attached to the PDP 11, the double-sided tape 15 can be provided between the divided heat conductive sheets 13, and the double-sided tape 15 can be provided. Since the PDP 11 and the chassis base 17 are mutually attached to each other to further increase the bonding force between the PDP 11 and the chassis base 17, the adhesion area of the thermal conductive sheet 13 to the rear surface of the PDP 11 may be reduced, resulting in a heat dissipation imbalance. The heat conductive sheet 13 is preferably set to an appropriate number within a range that does not cause heat dissipation imbalance of the PDP 11.

In addition, the thermal conductive sheet 13 may be formed of various materials, that is, an acrylic thermal conductive sheet, a graphite thermal conductive sheet, a metallic thermal conductive sheet, or a carbon nanotube thermal conductive material.

The thermal conductive sheet 13 is interposed between the PDP 11 and the chassis base 17 which are attached to each other, and the PDP 11 is bonded by the coupling force of the PDP 11 and the chassis base 17 by the double-sided tape 15. It closely adheres to the back of the. Therefore, it is preferable that this double-sided tape 15 has sufficient bonding force to maintain the attachment state of the PDP 11 and the chassis base 17 continuously and firmly.

The double-sided tape 15 is interposed between the plurality of divided thermally conductive sheets 13 to attach the rear surface of the PDP 11 and the front surface of the chassis base 17 opposite thereto at a plurality of positions. As described above, the greater the number of divisions of the thermal conductive sheet 13, the stronger the bonding force between the chassis base 17 and the PDP 11, but the higher the possibility of causing heat dissipation imbalance of the PDP 11. Therefore, the division and the number of the double-sided tape 15 and the heat conductive sheet 13 are appropriately set within the range capable of maintaining the bonding force between the PDP 11 and the chassis base 17 while maintaining the heat dissipation balance of the PDP 11. It is preferable. As a result, the thermal conductive sheet 13 is divided into a plurality and attached to the rear surface of the PDP 11 while maintaining the gap C, and the double-sided tape 15 is interposed between the thermal conductive sheet 13 and the outer portion of the thermal conductive sheet 13. Dividedly arranged on a strip, the back of the PDP 11 and the chassis base 17 are attached to each other.

As described above, the chassis base 17 is attached to the rear surface of the PDP 11 by the double-sided tape 15 at the heat conductive sheet 13 side to support the PDP 11, and the opposite side of the PDP 11. Is mounted on a driving circuit board (not shown) for driving the PDP 11.

Substantially, as shown in FIG. 1, the thermal conductive sheet 13 is attached to the rear surface of the PDP 11, and the double-sided tape 15 is attached to the chassis base 17, and the PDP 11 in such a state. The chassis base 17 is bonded to each other and attached to each other with a double-sided tape 15 to form a plasma display device. Therefore, when the double-sided tape 15 is attached to the chassis base 17, it is preferable that the corresponding position of the heat conductive sheet 13 can be confirmed on the chassis base 17.

Thus, the chassis base 17 is provided with an alignment mark 19 indicating the attachment position of the double-sided tape 15. The alignment mark 19 is a thermal conductive sheet 13 attached to the rear surface of the PDP 11 and a double-sided tape 15 attached to the chassis base 17 when the PDP 11 and the chassis base 17 are combined. It is possible to attach the double-sided tape 15 at positions where do not overlap with each other.

In other words, when the heat conductive sheet 13 is attached to the PDP 11, it is also possible to confirm the corresponding position of the double-sided tape 15 on the PDP 11. In this case, it is preferable to form an alignment mark on the PDP 11.

The alignment mark 19 is placed on the opposite surface of the PDP 11 of the chassis base 19 corresponding to the space C between the heat conductive sheets 13 divided so that the double-sided tape 15 and the heat conductive sheets 13 do not overlap. It is preferably formed. The alignment mark 19 may be formed intaglio on the chassis base 17. This negative alignment mark 19 can be easily formed by a punching process since the chassis base 17 is usually made of metal.

The alignment mark 19 may be formed at various positions on the chassis base 17, and is preferably made of "" "and" "" grooves corresponding to the tip shape of the double-sided tape 15, which is double-sided. When the tape 15 is formed in a band shape having a constant width (a considerably narrower width than the length), it is possible to more accurately confirm the attachment position of the double-sided tape 15.

2 and 3, the alignment marks 19 may be formed in pairs at positions corresponding to both ends in the longitudinal direction of the double-sided tape 15. In other words, when the worker attaches the double-sided tape 15 between the heat conductive sheets 13 and the outside thereof, the PDP 11 is confirmed by confirming that both ends of the alignment mark 19 and the double-sided tape 15 coincide with each other. It is possible to confirm that the heat conductive sheet 13 attached to the rear surface of the c) and the double-sided tape 15 attached to the chassis base 17 do not overlap.

In addition, the alignment mark 19 may be formed to correspond to both the double-sided tape 15 as shown in FIGS. 2 and 3, but may be formed to correspond to only a part of the double-sided tape 15 as shown in FIG. 4. have. In this case, the alignment mark 19 enables the formation thereof more conveniently than in the case described above, and is preferably provided between the heat conductive sheets 13 (C) rather than the outside of the heat conductive sheets 13. This embodiment effectively prevents the overlap of the double-sided tape 15 and the heat conductive sheet 13 while minimizing the number of alignment marks 19.

5 to 8, the alignment marks 19 may be formed in pairs at positions corresponding to diagonal ends of the double-sided tape 15. In this case, the alignment mark 19 can be shared. That is, it can be used to attach the double-sided tape 15 in the longitudinal direction as shown in FIG. 6 through one alignment mark 19, and can also be used to attach the double-sided tape 15 in the lateral direction (not shown).

In particular, as shown in FIGS. 7 and 8, the alignment marks 19 may be formed at positions corresponding to both ends of the width direction of the double-sided tape 15. Also in this case, the alignment mark 19 is preferably provided at a position corresponding to both ends of the double-sided tape 15. The alignment mark 19 may be formed as a circular hole, or may be formed in various shapes such as a square hole or a triangular hole.

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, an alignment mark is provided on a chassis base at a position corresponding to a heat conductive sheet attached to a PDP, and both sides of the chassis base are checked while checking the position of the heat conductive sheet on the chassis base. Since the tape can be attached, the area of the thermally conductive sheet attached to the rear surface of the PDP is maximized while securing the area of the double-sided tape on the PDP side, and the bright image is removed by the heat dissipation balance of the PDP. When joining the base, there is an effect of preventing the thermal conductive sheet and the double-sided tape overlap.

Claims (10)

A plasma display panel; A thermal conductive sheet attached to one side of the plasma display panel; A double-sided tape attached to one side of the plasma display panel outside the thermal conductive sheet; And A chassis base attached to the double-sided tape to support the plasma display panel at the heat conductive sheet side, And the chassis base includes an alignment mark indicating an attachment position of the double-sided tape. The method of claim 1, The thermal conductive sheet is divided into a plurality of parts and attached to the rear surface of the plasma display panel with a gap therebetween. Device. The method of claim 1, And the alignment mark is formed on a surface opposite to the plasma display panel of the chassis base. The method of claim 3, wherein And the alignment mark is formed on the chassis base corresponding to the thermally conductive sheets. The method of claim 3, wherein The alignment mark is formed on the chassis base intaglio. The method of claim 3, wherein And the alignment mark is formed of "" "and" "" grooves corresponding to the tip shape of the double-sided tape. The method of claim 3, wherein And the alignment marks are formed in pairs at positions corresponding to both ends of each of the longitudinal directions of the double-sided tape. The method of claim 7, wherein And the alignment mark is formed to correspond to all of the double-sided tape or to correspond to a portion of the double-sided tape. The method of claim 3, wherein And the alignment marks are formed in pairs at positions corresponding to diagonal ends of the double-sided tape. The method of claim 9, And the alignment mark is formed at a position corresponding to both ends of a width direction of the double-sided tape.

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