KR20060080411A - Chassis base for plasma display apparatus and plasma display apparatus comprising the same - Google Patents

Abstract

An object of the present invention is to provide a chassis base for a plasma display device having improved heat dissipation performance and increased rigidity. To achieve this object, the present invention provides a chassis base for a plasma display device displaying an image using gas discharge. A pair of plates disposed so as to face apart from each other; And a plate member sandwiched between the pair of plates to perform a heat dissipation function and a reinforcement function, wherein the plate member comprises a plurality of cells coupled to each other in a plane direction of the plate member. Provided are a chassis base for a device and a plasma display device having the same.

Description

Chassis base for plasma display device and plasma display device having same {Chassis base for plasma display apparatus and plasma display apparatus comprising the same}

1 is an exploded perspective view of a plasma display device according to the prior art.

2 is a partial cutaway perspective view of the chassis base according to the first embodiment of the present invention.

3 is a side view of the chassis base.

4 is an exploded perspective view of a plasma display device employing a chassis base according to a first embodiment of the present invention.

5 is a perspective view of a chassis base according to a second embodiment of the present invention.

6 is a perspective view showing a modification of the second embodiment of the present invention.

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

1, 100: plasma display device

10, 110, 210: chassis base 20, 120: plasma display panel

30, 130: circuit board 160: first plate

170, 270: plate member 175, 275: cell

180: second plate 260: base plate

280: auxiliary plate

The present invention relates to a chassis base for a plasma display device, and more particularly, to a chassis base for a plasma display device with improved heat dissipation performance and increased rigidity, and a plasma display device having the same.

BACKGROUND ART In general, a plasma display device is a flat panel display device that displays an image by using a gas discharge phenomenon, and has been spotlighted as a next-generation flat panel display device because it can be thinned and can realize a large screen having a wide viewing angle.

1 is an exploded perspective view of a plasma display device 1 according to the prior art. The plasma display apparatus 1 includes a plasma display panel 20 and a rear surface of the plasma display panel 20 that are formed by combining the front panel 21 and the rear panel 22 and implement an image using gas discharge. And a chassis base 10 disposed on the chassis to support the plasma display panel 20 and a predetermined number of circuit boards 30 disposed behind the chassis base 10 to drive the plasma display panel 20. . In addition, a connection cable 40 for electrically connecting the plasma display panel 20 and the circuit board 30 is disposed.

The plasma display panel 20 and the chassis base 10 are coupled to each other by an adhesive means (not shown) such as a double-sided tape. The chassis base 10 is made of a metal material and has a rectangular shape, and supports the plasma display panel 20 and discharges heat transferred from the plasma display panel 20.

In this case, since the chassis base 10 is made of a thin metal plate, the surface area of the chassis base 10 is limited to a rectangular shape, so that the amount of heat emitted from the surface of the chassis 10 base is small. I had. In addition, the chassis base 10 may have deformation such as bending due to its own weight and external load, and the chassis base 10, which holds a large amount of heat, may cause thermal expansion by causing thermal expansion. In the chassis composed of the above thin metal plate, the rigidity of the chassis is low, so that deformation may occur. In addition, when the plasma display panel 20 is enlarged, the chassis base 10 should be enlarged accordingly. In this case, there was a problem that the possibility of occurrence of the above deformation increases.

The present invention has been made to solve the above problems, and an object thereof is to provide a chassis base for a plasma display device having improved heat dissipation performance and increased rigidity, and a plasma display device having the same.

In order to achieve the above object and other objects, according to an aspect of the present invention, there is provided a chassis base for displaying a plasma display device using a gas discharge, a pair of plates arranged to face each other; And a plate member sandwiched between the pair of plates to perform a heat dissipation function and a reinforcement function, wherein the plate member comprises a plurality of cells coupled to each other in a plane direction of the plate member. A chassis base for the device is provided.

Here, the pair of plates is made of aluminum, the plate member is preferably made of any one selected from aluminum or copper.

In addition, the cross-sectional shape of the cell is preferably any one selected from polygons or circles including triangles, squares and hexagons.

In addition, the heat dissipation material disposed in the cell is further provided, the heat dissipation material is preferably any one carbon-based material selected from graphite or carbon black.

On the other hand, according to another aspect of the present invention, in the chassis base for plasma display device for supporting a plasma display panel for displaying an image using gas discharge and a circuit board for driving the plasma display panel from the front and rear, respectively, the base plate; And a plate member disposed on the base plate to perform a heat dissipation function and a reinforcement function, wherein the plate member comprises a plurality of cells coupled to each other in a plane direction of the plate member. Chassis base is provided.

Here, it is preferable that a plurality of auxiliary plates disposed on the plate-shaped member, corresponding to the position where the circuit board is arranged, are further formed of the same material as the base plate. In addition, the plurality of auxiliary plates are preferably connected to each other to form a single plate.

In addition, the base plate is made of aluminum, the plate member is preferably made of any one selected from aluminum or copper.

In addition, the cross-sectional shape of the cell is preferably any one selected from polygons or circles including triangles, squares and hexagons.

On the other hand, according to another aspect of the invention, the chassis base for the plasma display device; A plasma display panel disposed in front of the chassis base and displaying an image using gas discharge; And a circuit board disposed behind the chassis base and driving the plasma display panel.

Hereinafter, a chassis base for a plasma display device and a plasma display device having the same will be described in detail with reference to the accompanying drawings.

2 is a partial cutaway perspective view of a chassis base according to a first embodiment of the present invention, FIG. 3 is a side view of the chassis base of FIG. 2, and FIG. 4 is a plasma employing a chassis base according to the first embodiment of the present invention. An exploded perspective view of the display device.

2, the chassis base 110 according to the first embodiment of the present invention is a plate of a metal disposed on either side of the first plate 160, which is a thin plate of metal, the first plate 160 The member 170 and the second plate 180 which is a metal thin plate disposed on the plate member 170 are provided. That is, as shown in FIG. 3, the chassis base 110 is formed of a metal sandwiched between the pair of plates 160 and 180 and the pair of plates 160 and 180 which are spaced apart in parallel to each other. It consists of the plate member 170. In FIG. 2, a portion of the second plate 180 is cut to show a portion of the plate member 170.

Plasma display panel 120 for displaying an image using gas discharge is disposed on either side of the chassis base 110 having such a configuration, and a side opposite to the side on which the plasma display panel 120 is disposed A circuit board 130 for driving the plasma display panel 120 is disposed on the circuit board 130. The plasma display panel 120 and the circuit board 130 will be described later.

The plasma display panel 120 disposed on one side of the chassis base 110 generates heat therein during operation. The generated heat is transferred to the chassis base 110 and is discharged to the ambient air through heat exchange with the ambient air on the entire surface of the chassis base 110. To this end, the pair of plates (160, 180) is preferably made of a good thermal conductivity metal, such as aluminum.

The plate member 170 which is sandwiched between the pair of plates 160 and 180 performs a function of dissipating heat from itself and a function of transferring heat between the pair of plates 160 and 180. In addition, it performs a function of adding rigidity to the chassis base (110). The plate member 170 is preferably a plurality of cells 175 are coupled to each other in the planar direction of the plate member 170. In FIG. 2, the structure of the plate member 170 is shown in more detail in an enlarged view defined by a circle of dashed lines. Referring to the enlarged view of FIG. 2, the cell 175 has a hexagonal cross section, and the cells 175 are coupled to each other in a plane such that the cells 175 form a honeycomb, and the plate member 170. ). In addition, the cross-sectional shape of the cell 175 is not limited to the hexagon shown in FIG. 2, and may be a polygon or a circle including a quadrangle, a triangle, and a hexagon. Cells having any cross-sectional shape can be employed as long as they can be joined together to form a plate-like member.

The plate member 170 having such a configuration may be coupled to any one of the pair of plates 160 and 180 by welding or the like. In addition, the plate-shaped member 170 is hermetically and not lifted between the pair of plates 160 and 180, and then the pair of plates 160 and 180 are coupled to each other to form the integrated chassis base 110. It can also be configured.

The individual cells 175 constituting the plate member 170 have a plurality of surfaces, and since the plurality of cells 175 are configured to be coupled to each other, the plate member 170 itself has a large surface area. Therefore, heat transmitted from any one of the pair of plates 160 and 180 can be released to the surrounding air through the increased surface, so that the plate member 170 can function as a heat sink. To this end, the plate member 170 is preferably made of aluminum, more preferably may be made of copper. In the latter case, since copper has better thermal conductivity than aluminum, thermal conductivity and heat dissipation performance may be better than that of aluminum.

On the other hand, the plasma display panel 120 disposed on either side of the chassis base 110 generates heat locally instead of generating heat throughout its plane. Locally generated heat is transferred to either plate 160 or 180 in contact with the plasma display panel 120 of the chassis base 110 and through the plate member 170 to the other plate 160 or 180. Is delivered to. In this process, the heat locally introduced to either plate 160 or 180 of the chassis base 110 may be released and diffused in a wider range while being transmitted through the plate member 170. This is because the plate member 170 has a structure in which a plurality of cells 175 are connected to each other in the plane direction.

In this case, the cell 175 may be filled with a heat radiation material to improve the heat dissipation performance of the chassis base 110. Such heat radiating materials include carbon-based materials such as graphite and carbon black. Materials such as graphite and carbon black are not only thermal conductors having excellent thermal conductivity, but also have a small range of thermal expansion, which may contribute to providing dimensional stability to a part affected by temperature change. Since the heat dissipation material as described above is filled in the respective cells 175, the heat dissipation performance of the cell 175 may be improved, and heat conduction in the planar direction of the plate member 170 may be more smoothly performed. In addition, thermal deformation of the plate member 170 itself may be prevented. Therefore, the chassis base 110 provided with the plate member 170 filled with the above heat dissipating material in the respective cells 175 may exhibit an excellent effect in the function of diffusing the transferred heat.

In addition, the plate member 170 is composed of a plurality of cells 175 therein is sandwiched between the pair of plates (160, 180). In such a configuration, when an external deformation such as bending or bending is applied to the plate member 170, the individual cells 175 may resist such deformation, and the cells 175 may be coupled to each other so that the plate member ( 170, the plate member 170 is not easily deformed because of its large resistance to external deformation such as bending and bending. Therefore, the chassis base 110 having a structure in which the plate member 170 is sandwiched between the pair of plates 160 and 180 retains heat transferred from the plasma display panel 120 to prevent thermal deformation. When the chassis base 110 is enlarged in size, there is little possibility of deformation due to the weight and external load applied to the chassis base 110. As a result, the pair of plates 160 and 180 facing each other in parallel spaced apart from the chassis base 110 and the individual cells 175 sandwiched between the plates are coupled to each other in a planar direction. By configuring 170, the rigidity of the chassis base 110 is significantly increased.

4 is an exploded perspective view of the plasma display apparatus 100 employing the chassis base 110 according to the first embodiment of the present invention. Referring to FIG. 4, the plasma display apparatus 100 is coupled to a plasma display panel 120 for displaying an image using gas discharge and a rear of the plasma display panel 120 to provide the plasma display panel 120. And a chassis base 110 for supporting and a circuit board 130 disposed behind the chassis base 110 to drive the plasma display panel 120. In addition, a connection cable 140 for connecting the plasma display panel 120 and the circuit board 130 is further provided.

The plasma display panel 120 includes a front panel 121 and a rear panel 122. Although not shown in FIG. 4, the front panel 121 includes a discharge sustaining electrode pair including a front substrate, an X electrode serving as a scan electrode formed on the rear surface of the front substrate, and a Y electrode serving as a common electrode, and the discharge sustaining electrode. A first dielectric layer covering the pair, a protective film formed on the first dielectric layer, and the rear panel 122 includes a rear substrate, address electrodes formed on the front surface of the rear substrate to intersect the discharge sustain electrodes; It is preferable to include a second dielectric layer covering the address electrode, a partition formed on the second dielectric layer, and a phosphor disposed in a light emitting cell defined by the partition. Although the structure of the plasma display panel 120 is an AC three-electrode surface discharge structure, the present invention is not limited thereto, and the present invention employs a plasma display panel having various other structures such as a two-electrode structure and an opposite discharge structure. It can be applied to one plasma display device.

The plasma display panel 120 and the chassis base 110 may be formed of a double-sided tape interposed between the thermal conductive sheet 125 and the edges of the thermal conductive sheet 125 to facilitate heat transfer therebetween. It may be coupled to each other by the adhesive means 126.

The circuit board 130 performs a function of applying and controlling a power and an electric signal so that the plasma display panel 120 generates a gas discharge to implement a predetermined image. The circuit board 130 may include a power supply unit supplying power, a logic unit controlling a signal applied to implement an image, an X electrode driving unit driving an X electrode which is one of the sustain electrode pairs, and the sustain electrode pairs. A Y electrode driver for driving the Y electrode, which is the other one, and an address electrode driver for driving the address electrode are provided. However, the configuration of the circuit board 130 described above is an example of various circuit board configurations, for example, a configuration of a circuit board for driving a plasma display panel having an AC three-electrode surface discharge structure. It is not limited.

Referring to the driving of the plasma display apparatus 100 configured as described above, an address discharge occurs by applying a predetermined potential between the Y electrode and one of the discharge sustaining electrode pairs and the address electrode in the circuit board 130. Charged particles are formed on the dielectric layer, and in this state, a predetermined voltage is applied between the discharge sustaining electrode pairs to generate a sustain discharge on the surface of the first dielectric layer of the front substrate, and then generate a plasma formed from a gas enclosed in the panel. The phosphor layer is excited by vacuum ultraviolet rays, and visible light is emitted. The plasma display panel 120 may be driven in various ways according to a two-electrode structure, a three-electrode structure, a surface discharge method, a counter discharge method, and the like.

The plasma display panel 120 generates heat during driving, and when the generated heat is not quickly and smoothly discharged, luminance is lowered in a discharge cell having a large amount of heat. The overall luminance of can be lowered.

Heat generated in the plasma display panel 120 is transferred from the plasma display panel 120 to the chassis base 110 and radiated through heat exchange with ambient air in the chassis base 110. When the plasma display panel 120 and the chassis base 110 are coupled through surface contact, the plasma display panel 120 is made of glass material and the chassis base 110 is made of metal material such as aluminum. Therefore, the thermal conductive sheet 125 is interposed between the plasma display panel 120 and the chassis base 110 in order to ensure surface contact therebetween and to secure a path through which the generated heat is conducted. Accordingly, heat generated in the plasma display panel 120 is transferred to the chassis base 110 via the thermal conductive sheet 125 and radiated by heat exchange with ambient air on the surface of the chassis base 110. Therefore, as the surface area of the chassis base 110 increases, the amount of heat dissipated may increase.

In the case of the chassis base 110 according to the first embodiment of the present invention, heat transferred to the first plate 160 is transferred to the second plate 180 via the plate member 170. In this heat transfer path, heat generated in the plasma display panel 120 may radiate heat from the first plate 160, the plate member 170, and the second plate 180. Since the surface area of the plate member 170 is large, the plate member 170 may act as a kind of heat radiation fin, and thus the amount of heat released may be greatly increased.

In addition, the plate member 170 employs a structure in which a plurality of cells 175 are coupled to each other over the planar direction of the plate member 170, and the carbon-based heat dissipation material is formed inside the cells 175. Since not shown, heat introduced into the first plate 160 may smoothly diffuse in the planar direction of the chassis base 110 while passing through the plate member 170. In addition, since the plate member 170 is made of aluminum or copper having good thermal conductivity, heat transfer to the second plate 180 may be smoothly performed, and heat may be radiated from the second plate 180. In addition, since the plate member 170 has a structural characteristic consisting of a plurality of cells 175 as described above, the chassis base 110 retains a large amount of heat and causes thermal deformation and the chassis base. When 110 is enlarged, the possibility of causing deformation by external and self loads is reduced.

5 is a perspective view of a chassis base 210 according to a second embodiment of the present invention, and FIG. 6 is a perspective view of a modification of the chassis base 210. Referring to FIG. 5, the chassis base 210 according to the second embodiment of the present invention may include a base plate 260, which is a thin plate of metal, and a metal plate member disposed on one surface of the base plate 160. 270). Here, the base plate 260 may correspond to any one of the first and second plates 160 and 80 in the first embodiment.

The base plate 260 and the plate member 270 have the same configuration as any one of the pair of plates 160 and 180 and the plate member 170 in the chassis base 110 according to the first embodiment. Has When the chassis base 210 is composed of only the base plate 260 and the plate member 270, a plurality of cells 275 constituting the plate member 270 may be directly exposed to air, and thus, may have a heat dissipation effect. Can be increased. In addition, due to the structural characteristics of the plate member 270 may have the same effect as the first embodiment. On the other hand, in the chassis base 110 of the first embodiment, the heat dissipation material is filled in the respective cells 175, but in this embodiment, the plate member 270 functions as a heat dissipation fin to perform heat dissipation into the air. In this case, the heat dissipation material may not be employed, and when the heat dissipation material is filled in the cell 275, a sealing member or the like may be installed to ensure that the heat dissipation material is held in the cell 275. have.

In addition, unlike the chassis base 110 of the first embodiment, the chassis base 210 of the present embodiment is provided with directionality. As shown in FIG. 5, the base plate 260 is disposed in front of the chassis base 210, and the plate member 270 is disposed at the rear of the chassis base 210. The plasma display panel 120 may be disposed on the base plate 260, and the circuit board 130 may be disposed on the plate member 270.

When the circuit board 130 is disposed on the plate member 270, the circuit board 130 may be easily disposed due to a structural characteristic of the plate member 270 having a plurality of cells 275. To this end, a plurality of auxiliary plates 280 may alternatively be arranged. 6 shows a perspective view of a modification of the second embodiment in which a plurality of such auxiliary plates 280 are arranged.

In detail, unlike the configuration of the chassis base 110 of the first embodiment in which the plate member 170 is sandwiched between the pair of plates 160 and 180, on the base plate 260. The chassis base 210 may be configured in a configuration in which only the plate member 270 is disposed, and the auxiliary plate 280 may be selectively added on the plate member 270.

The auxiliary plate 280 may perform a function for mounting the circuit board 130, and may perform a function of releasing heat transferred from the plate member 270. Therefore, the auxiliary plate 280 is preferably made of the same material as the base plate 260. In addition, the auxiliary plate 280 may be provided with other thermal characteristics. For this reason, the auxiliary plate 280 should be disposed on the plate member 270 corresponding to the position where the circuit board 130 is disposed. The method of arranging the auxiliary plate 280 illustrated in FIG. 6 is an example of the AC three-electrode surface discharge driving method illustrated in FIG. 4, and the method of arranging the auxiliary plate 280 is not limited thereto. Rather, it may be changed according to the arrangement of the circuit board 130. In addition, in arranging the auxiliary plate 280 on the plate member 270, the plurality of auxiliary plates 280 disposed corresponding to the position where the circuit board 130 is disposed are connected to each other to form a single plate. In the configuration, the auxiliary plate 280 may be more easily disposed. Of course, other methods for mounting the circuit board 130 on the plate member 270 may be considered instead of the auxiliary plate 280.

As described above, unlike the chassis base according to the prior art, the chassis base for plasma display device according to the present invention further includes a member for dissipating heat. That is, by arranging a plate-like member composed of a plurality of cells between a pair of metal plates, the chassis base for a plasma display device according to the present invention greatly improves its heat dissipation function, increases its thermal diffusion function, and also increases the chassis base. The stiffness of is greatly increased.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

Claims (12)

In the chassis base for plasma display device for displaying an image by using a gas discharge, A pair of plates arranged to face apart from each other; And A plate member which is sandwiched between the pair of plates to perform a heat dissipation function and a reinforcement function, The plate member is a chassis base for a plasma display device, characterized in that a plurality of cells are coupled to each other in the planar direction of the plate member. The method of claim 1, The pair of plates is a chassis base for a plasma display device, characterized in that made of aluminum. The method of claim 1, And the plate member is made of any one selected from aluminum or copper. The method of claim 1, The cross-sectional shape of the cell is any one selected from a polygon or a circle including a triangle, a square and a hexagon. The method of claim 1, Further comprising a heat dissipation material disposed within the cell, The heat dissipating material is a chassis base for plasma display device, characterized in that any one carbon-based material selected from graphite or carbon black. A chassis base for supporting a plasma display panel for displaying an image using gas discharge and a circuit board for driving the plasma display panel from the front and the rear, respectively, Base plate; And A plate member disposed on the base plate to perform a heat dissipation function and a reinforcement function, The plate member is a chassis base for a plasma display device, characterized in that a plurality of cells are coupled to each other in the planar direction of the plate member. The method of claim 6, And a plurality of auxiliary plates disposed on the plate member and corresponding to the positions where the circuit boards are arranged, the auxiliary plates made of the same material as the base plate. The method of claim 7, wherein And the plurality of auxiliary plates are connected to each other to form a single plate. The method of claim 6, The base plate is a chassis base for plasma display device, characterized in that made of aluminum. The method of claim 6, And the plate member is made of any one selected from aluminum or copper. The method of claim 6, The cross-sectional shape of the cell is any one selected from a polygon or a circle including a triangle, a square and a hexagon. A chassis base for a plasma display device of any one of claims 1 to 11; A plasma display panel disposed in front of the chassis base and displaying an image using gas discharge; And And a circuit board disposed behind the chassis base and driving the plasma display panel.

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