KR20060116962A - Plasma display apparatus - Google Patents

Abstract

A plasma display device is provided to shield an electromagnetic wave generated from a plasma display panel by forming a second sheet layer absorbing the electromagnetic wave on a first sheet layer. A plasma display device includes a plasma display panel(320), a frame(340) supporting the plasma display panel, a sheet layer(350) formed between the frame and the plasma display panel, and a second sheet layer(360) formed on either surface of the first sheet layer. The second sheet layer is formed of a metal material. The metal material is at least one of manganese-zinc, nickel-zinc based ferrite, nickel-coated graphite fiber, and silver-coated copper.

Description

Plasma Display Apparatus {Plasma Display Apparatus}

1 is a view showing the structure of a typical plasma display device.

2 is a schematic view showing a heat dissipation sheet layer of a conventional plasma display device.

3 illustrates a plasma display device according to the present invention.

4A and 4B illustrate a first sheet layer and a second sheet layer of the plasma display device according to the present invention.

<Description of Major Symbols in Drawing>

310: case 311: cabinet

312: back cover 320: plasma display panel

330: drive unit 340: frame

350: first sheet layer 351: sheet having a heat dissipation function

352: thermally conductive material 360: second sheet layer

370: filter 380: spring gasket

390: filter support 400: module supporter

The present invention relates to a plasma display device, and more particularly, to a plasma display device capable of improving a heat dissipation sheet layer to improve a heat dissipation function and shield and absorb electromagnetic waves.

In general, a plasma display panel (Plasma Display Panel) is a partition formed between the front panel and the rear panel to form a unit cell, each cell in the Neon (Ne), helium (He) or a mixture of neon and helium ( The main discharge gas such as Ne + He) and an inert gas containing a small amount of xenon are filled. When discharged by a high frequency voltage, the inert gas generates vacuum ultraviolet rays and emits phosphors formed between the partition walls to realize an image. Such a plasma display panel has been spotlighted as a next generation display device because of its thin and light configuration.

The plasma display device including the plasma display panel is as follows.

1 is a structure schematically showing the structure of a conventional plasma display device.

As shown in FIG. 1, the plasma display apparatus excites phosphors by a case 110 including a front cabinet 111 and a back cover 112 that determine an appearance, and vacuum ultraviolet rays caused by gas discharge inside the case. In order to drive and control the plasma display panel 120 and the plasma display panel to realize an image, the plasma display panel 120 is connected to a driving device 130 including a PCB and a driving device to emit heat generated when the plasma display device is driven, And a heat dissipation sheet layer 150 for attaching and dissipating the frame 140 to support the plasma display panel and the frame.

Also, the filter 160 and the filter 160 formed by attaching a film to a transparent glass substrate (not shown) with a predetermined distance to the front surface of the plasma display device are supported and electrically connected to the metal back cover. And a module supporter 190 for supporting a plasma display panel including a finger spring gasket 170, a filter support 180, and a driving device.

In the manufacturing process of the conventional plasma display apparatus having such a structure, first, a plasma display panel 120 for realizing an image is manufactured, and then a frame 140 and a driving device 130 installed on the rear surface of the plasma display panel 120. The module of the plasma display panel 120 is manufactured by assembling the lamp. Thereafter, if the case 110 or the like for determining the appearance is formed in the module of the plasma display panel, the plasma display apparatus is completed.

Since the conventional plasma display device manufactured as described above implements an image by applying high voltage and high frequency for plasma discharge, a lot of heat is generated when the plasma display device is driven. The heat dissipation sheet 150 is attached between the plasma display panel 120 and the frame 140 to emit such heat. Looking at the heat dissipation sheet 150 in more detail as follows.

2 is a view schematically showing a heat radiation sheet layer of a conventional plasma display device.

As illustrated in FIG. 2, in the heat dissipation sheet layer 150 of the conventional plasma display apparatus, heat conductive materials 152 are distributed on the heat dissipation sheet 151. The heat dissipation sheet 151 is generally made of a material in which acrylic, silicon, urethane, and silicon are mixed. The thermally conductive materials 152 distributed in the heat dissipation sheet 151 are materials such as aluminum hydroxide and silicon carbide.

The heat dissipation sheet layer 150 of the conventional plasma display apparatus may be formed of a plasma display panel 120 using a double-sided tape adhesive to the heat dissipation sheet 151 including the thermal conductive material 152 as shown in FIG. 2. The frame 140 was supported and functions to dissipate heat generated from the plasma display panel 120.

However, the heat dissipation sheet 150 is manufactured in the form of a roll to secure flexibility. However, when the heat dissipation sheet 150 is manufactured in the form of a roll, the heat dissipation sheet 151 may be thin, so that the thermal conductivity is poor. There is a limit to the rapid release of heat generated by the.

On the other hand, since the conventional plasma display device implements an image by applying a high voltage and a high frequency for plasma discharge, there is a problem in that electromagnetic waves are emitted more than the color cathode ray tube (CRT) or the liquid crystal display panel (LCD) in front of the panel glass.

Accordingly, an object of the present invention is to provide a plasma display device capable of improving a heat dissipation function and shielding and absorbing electromagnetic waves by improving a sheet layer having a heat dissipation function.

Plasma display device of the present invention for achieving the above object is a plasma display panel, a frame for supporting the plasma display panel, the first sheet layer formed between the frame and the plasma display panel and the first sheet layer formed on at least one surface of the first sheet layer It includes two sheet layers.

The material of the second sheet layer is characterized in that the metal material.

The metal material is at least one of manganese-zinc, nickel-zinc ferrite, nickel-coated graphite fiber, and silver-coated copper.

The thickness of the second sheet layer is characterized by being 0.8 mm or more and 1.0 mm or less.

The second sheet layer is characterized by shielding or absorbing electromagnetic waves.

At least one surface of the second sheet layer is characterized by further comprising an adhesive layer.

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

3 is a view showing a plasma display device according to the present invention.

As shown in FIG. 3, the plasma display apparatus excites phosphors by a case 310 including a front cabinet 311 and a back cover 312 that determine an appearance and vacuum ultraviolet rays caused by gas discharge inside the case. In order to drive and control the plasma display panel 320 and the plasma display panel to realize an image, the plasma display panel 320 is connected to a driving device 330 including a PCB and a driving device to release heat generated when the plasma display device is driven, It includes a frame 340 for supporting, a first sheet layer 350 for attaching and dissipating the plasma display panel and the frame, and a second sheet layer 360 adhered to the first sheet layer 350. The second sheet layer 360 formed as described above serves to shield and absorb electromagnetic waves as well as a heat radiating function. As illustrated, the second sheet layer 360 may be formed by being adhered to one surface of the first sheet layer 350 or the first sheet. The layer 350 may be divided into two layers and adhered therebetween. In addition, the second sheet layer 360 may not be formed on only one surface, but may be formed on various surfaces.

In addition, a finger spring which supports a filter 370 and a filter 370 formed by attaching a film to a transparent glass substrate (not shown) at a predetermined interval to the front surface of the plasma display device and electrically connects the metal back cover. A gasket 380 and a filter supporter 390 and a module supporter 400 for supporting a plasma display panel including a driving device are included.

The first sheet layer 350 and the second sheet layer 360 attached to the first sheet layer 350 of the plasma display device according to the present invention will be described in detail as follows.

4A and 4B are diagrams illustrating a first sheet layer and a second sheet layer of the plasma display device according to the present invention.

First, referring to FIG. 4A, a first sheet layer 350 is formed to support the plasma display panel 320 and the frame 340, and a second sheet layer 360 is formed below the first sheet layer 350. do. Herein, the thermally conductive materials 352 are distributed in the sheet 351 that radiates the first sheet layer 350. The heat dissipating sheet 351 is generally made of a mixture of acrylic, silicon, urethane, and silicon, and the thermally conductive materials 352 distributed on the heat dissipating sheet 351 are made of aluminum hydroxide and silicon carbide. It consists of such substances. That is, the heat radiation sheet layer of the conventional plasma display device shown in FIG.

A pressure-sensitive adhesive layer (not shown) is formed on at least one surface of the second sheet layer, in which the second sheet layer 360 that not only radiates heat to the first sheet layer 350 formed as described above, but also absorbs and shields electromagnetic waves. ) Adheres to the first sheet layer 350. At this time, the metal material used for the second sheet layer 360 is at least one of manganese-zinc, nickel-zinc-based ferrite, nickel-coated graphite fiber, silver-coated copper, and is formed of such a material. It is preferable that the thickness of the 2nd sheet layer 360 is 0.8 mm or more and 1.0 mm or less. At this time, when the thickness of the second sheet layer formed is less than 0.8 mm, electromagnetic waves cannot be sufficiently absorbed and shielded, and when the thickness of the second sheet layer exceeds 1.0 mm, it is difficult to secure the flexibility of the second sheet layer. .

Meanwhile, referring to FIG. 4B, a first sheet layer 350 for fixing the plasma display panel 320 and the frame 340 is formed, and unlike in FIG. 4A, the first sheet layer 350 is divided into two layers. It can be seen that the second sheet layer 360 is formed between the two first sheet layers 350. At this time, an adhesive layer is formed on both surfaces of the second sheet layer between the first sheet layer and adheres to the first sheet layer. The first sheet layer 350 attached to the plasma display panel side is called the panel side first sheet layer 350a, and the first sheet layer 350 attached to the frame side is arbitrarily referred to as the frame side first sheet layer 350b. . In this case, the thermally conductive materials 352 are distributed on the sheet 351 which radiates heat as in the panel side first sheet layer 350a and the frame side first sheet layer 350b. The heat dissipating sheet 351 is generally made of a material in which acrylic, silicon, urethane, and silicon are mixed, and the thermally conductive materials 352 distributed on the heat dissipating sheet 351 are made of aluminum hydroxide and silicon carbide. It consists of such substances. In addition, the thickness of the first panel side sheet 350a and the frame side first sheet layer 350b is thinner than the thickness of the first sheet layer 350 formed of one layer in FIG. 4A. The second sheet layer 360 formed as described above is made of a metal material as described above, and the metal material includes at least one of manganese-zinc, nickel-zinc ferrite, nickel-coated graphite fiber, and silver-coated copper. The thickness of the second sheet layer 360 is either 0.8 mm or more and 1.0 mm or less, as described above with reference to FIG. 4A.

As described above, the second sheet layer 360 is formed on the first sheet layer 350 that serves as the heat dissipation function of the plasma display device, thereby absorbing and shielding electromagnetic waves generated from the plasma display panel to dissipate the heat radiation function of the plasma display device. Further improve.

As described above, it will be understood by those skilled in the art that the above-described technical configuration may be implemented in other specific forms without changing the technical spirit or essential features of the present invention.

Therefore, the exemplary embodiments described above are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the following claims rather than the detailed description, and the meaning and scope of the claims and All changes or modifications derived from the equivalent concept should be interpreted as being included in the scope of the present invention.

As described above, the present invention absorbs and shields electromagnetic waves generated in the plasma display panel by forming a second sheet layer that shields and absorbs electromagnetic waves as well as a heat radiating function on the first sheet layer having a heat radiating function. It is effective to further improve the heat dissipation function.

Claims (6)

A plasma display panel; A frame for supporting the plasma display panel; A first sheet layer formed between the frame and the plasma display panel; And A second sheet layer formed on at least one surface of the first sheet layer; Plasma display device comprising a. The method of claim 1, The material of the second sheet layer is a plasma display device, characterized in that the material. The method of claim 2, The metal material is at least one of manganese-zinc, nickel-zinc-based ferrite, nickel-coated graphite fiber, silver-coated copper. The method according to claim 1 or 2, The thickness of the second sheet layer is a plasma display device, characterized in that 0.8mm or more and 1.0mm or less. The method of claim 1, And the second sheet layer shields or absorbs electromagnetic waves. The method of claim 1, And a pressure-sensitive adhesive layer formed on at least one surface of the second sheet layer.

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