KR20060116537A - Plasma display apparatus - Google Patents

Abstract

A plasma display device is provided to effectively radiate the heat generated from a circuit device, thereby securing stable operation of the circuit device. A panel displays an image through gas discharge. A chassis base(30) is engaged to the panel to support the panel. A circuit board(50) applies an electric signal to an electrode of the panel. A signal transmitting member(45) is installed to electrically connect the electrode of the panel with the circuit board, and is equipped with at least one circuit device. The signal transmitting member is supported by a chassis bed(40). The signal transmitting member has at least one ventilation part for ventilating the heat generated from the circuit device mounted on the signal transmitting member.

Description

Plasma display apparatus

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

FIG. 2 is a partially enlarged perspective view of the plasma display device of FIG. 1.

3 is a partial cross-sectional view of the chassis base shown in FIG. 2.

4 is a cross-sectional view illustrating a plasma display device according to another embodiment of the present invention.

<Description of Symbols for Major Parts of Drawings>

30: chassis base 40: chassis bed

41, 55: ventilating part 45: signal transmission means

46: circuit element 50: circuit board

The present invention relates to a plasma display device, and more particularly, to a plasma display device having a chassis bed having a structure capable of further facilitating the flow of air in an enclosed space by a signal transmission means located above the chassis bed. It is about.

BACKGROUND OF THE INVENTION A plasma display device is a flat panel display device that displays an image by using gas discharge. The plasma display device has been recently spotlighted as a large flat panel display device because it can be thinned and can realize a high quality large screen having a wide viewing angle.

In general, in a plasma display device, a panel that implements an image is formed by bonding a front substrate and a back substrate to each other, and the panel is attached to the chassis base through an adhesive tape.

In addition, a heat dissipation sheet is interposed between the chassis base and the back board to transfer heat generated from the panel to the chassis base to promote heat dissipation, or to spread heat generated from a certain area on the panel to other areas of the panel to localize heat. It performs a function to prevent the phenomenon.

Various circuit boards are mounted on the rear surface of the chassis base.

In such a conventional plasma display device, the electrodes of the panel are connected to a circuit board such as a buffer board through signal transmission means such as a tape-shaped tape carrier package (TCP).

In this case, an integrated circuit, that is, an integrated circuit (IC) such as a circuit element is mounted on the signal transmission means. Connected to the circuit board.

In addition, a plasma display device in which two ICs are mounted on a single TCP terminal having a 72-pin panel electrode connection terminal which is one end of the signal transmission means and a buffer board connection terminal which is the other end of the TCP is 8-pin has been commercialized. .

In this case, the circuit element is mounted on the chassis base by thermal grease or the like on a chassis bed which is generally bent and bent in a Z-shape, and a cover plate 60 is mounted on the circuit element. .

In the plasma display device having such a structure, the end of the chassis base is combined with the chassis bed to form a sealed space.

Part of the heat generated in the circuit elements mounted on the signal transmission means is conducted through the chassis bed bonded to the circuit elements and convection in the sealed space.

At this time, according to the structure of the chassis bed in the conventional plasma display device, the air in the sealed space can only flow through the openings at both ends in the transverse direction of the chassis bed.

Therefore, many spatial restrictions are applied to the flow of the air, and thus, there is a limit to cooling the air heated by the heat generated from the circuit element, and further, there is a problem that the cooling efficiency of the circuit element is greatly reduced.

The present invention solves the above problems, by allowing the air in the sealed space formed between the chassis base and the chassis bed heated by the heat generated from the circuit elements attached on the signal transmission means of the plasma display panel to flow more smoothly. It is an object of the present invention to provide a plasma display device having a chassis bed that facilitates cooling of air and further improves the cooling efficiency of heat generated from the circuit elements.

In order to achieve the above and other objects, the present invention provides a panel in which an image is implemented using plasma discharge, a chassis base bonded to the panel to support the panel, and a circuit board for applying an electrical signal to the panel. And a circuit bed installed for electrical connection between the panel and the circuit board and having at least one circuit element mounted thereon, and a chassis bed supporting the signal transfer means, wherein the signal transfer means is mounted on a circuit element. And at least one first vent suitable for circulating heat to be generated therefrom.

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

1 is an exploded perspective view showing a schematic configuration of a plasma display device according to an embodiment of the present invention, FIG. 2 is a partially enlarged perspective view of the plasma display device of FIG. 1, and FIG. 3 is a portion of the chassis base shown in FIG. 2. It is a cross section.

Referring to the drawings, the plasma display device according to the present embodiment includes a plasma display panel, a chassis base, a circuit board, a signal transmitting means, a chassis bed, and a ventilation unit.

The chassis base 100 is attached to the rear surfaces of the plasma display panels 10 and 20. The chassis base 100 preferably has a predetermined rigidity to support the panels 10 and 20.

In addition, the chassis base 100 receives the heat generated from the panel and serves to discharge to the outside.

Therefore, the chassis base 100 is preferably made of a material such as aluminum. The chassis base 100 is bonded by an adhesive part 22 such as a plasma display panel and a double-sided tape.

In order to smoothly transfer heat generated from the plasma display panel to the chassis base 100, the heat dissipation sheet 21 is disposed at a portion where the adhesive part 22 is not located between the plasma display panel and the chassis base 100. have.

The rear surface of the chassis base 100 is provided with a circuit board 50 such as a predetermined number of driving circuit boards for driving the plasma display panel.

The circuit board 50 includes a display unit of a panel, that is, a driver, a controller, and the like for implementing an image.

Signal transmission means 45 are provided to transfer electronic signals provided from the circuit board 50 to the panel. In order to support the signal transmission means 45 to the plasma display device, the chassis bed 40 is coupled to at least one end of the chassis base 30 as shown in the figure, and the chassis bed 40 includes panels 10 and 20. And a signal transmission means 45 for electrically connecting a plurality of electrodes located at the back side to a circuit board 50 located at the rear of the chassis base 30. Here, the signal transmission means 45 is provided on the panel. The circuit board 50 electrically connected to the electrode is generally called a buffer board, and as a signal transmission means 45, a tape carrier package (TCP) is generally used.

At this time, at least one integrated circuit, that is, a circuit element 46 in the form of an integrated circuit (IC), is mounted on the signal transmission means 45 such as TCP. It is integrated by the circuit element 46 and is simplified to, for example, several circuit lines and connected to a circuit board 50 such as a buffer board.

On the other hand, a large amount of heat is generated in the circuit element 46 due to its electrical resistance, which is generally conducted to the chassis bed 40 and convection into the air over a large area of the chassis bed 40 as a structure. Is cooled.

The present invention forms at least one first vent part (100) on the signal transmitting means (45) to ensure a smoother air flow when the heat generated and conducted in the circuit element (46) is convection into the air to ensure cooling. It is intended to facilitate.

The chassis base 30 also includes a second ventilation unit 200 to correspond to the first ventilation unit 100. Here, the cover plate 60 is also provided with the third ventilation part 300 in the same shape as the ventilation parts 100 and 200.

In FIG. 2, the shape of the first ventilator 100 is circular, but this is also only an embodiment of the present invention. If the structure enables smooth air flow, the shape may be square, circular, or the like. Any other polyhedron or irregular shape is possible.

In addition, due to consideration of the spatial structure of the signal transmission means 45, it may also be formed as a closed curve of the slit (slit) form.

That is, as long as the electrical wiring of the signal transmission means 45 allows, it can comprise a square or other polygon. Here, the polygon means a closed curve, but as long as the electrical wiring of the signal transmission means 45 allows, one side of the signal transmission means 45 may be configured in a chamfer shape.

That is, referring to the cross-sectional view of FIG. 3, a part of the heat generated by the circuit element 46 is convection into the air in the sealed space 35 formed by the combination of the chassis bed 40 and the chassis base 30.

 The cover plate 60 may allow air in the sealed space 35 heated by the transfer of heat to exit the sealed space 35 through at least one second ventilation unit 200 formed in the chassis base 30. It is provided with a third ventilation unit 300 to face the ventilation unit (100,200).

To this end, the first vent part 100 is formed in the signal connection means 45 in a direction opposite to the at least one second vent part 200 formed on the chassis base 30.

Generally, the chassis base 30 coupled to the end of the chassis bed 40 is bent and formed, in which case the chassis base 30 is divided into two parts.

That is, it is divided into a first surface in planar contact with the chassis bed 40 and a second surface bent at right angles from the first surface and extending perpendicular to the chassis bed 40.

At this time, the heat generated from the circuit element 46 is first conducted to the chassis bed 40, and then to the second surface, the first surface, and the like. Of course, convection caused by heated air in the closed space 35 is, of course.

On the other hand, according to one embodiment according to the technical idea of the present invention, it is preferable that the first ventilation unit 100 is formed to face the second ventilation unit 200 on the second surface of the chassis base (30).

In addition, as shown in FIG. 3, when one end of the chassis base 30 is bent and coupled to the chassis bed 40, the chassis base 30 may include a ventilation unit 100 of the signal transmission means 45. It is preferable that another ventilation part, that is, a second ventilation part 200, is also formed on the opposite surface.

By taking this structure, the flow of air in the closed space 35 can be made more smooth, and the heated air can move to the outside.

In addition, although the first ventilator and the second ventilator 100 and 200 have a rectangular shape in the drawing, this is also only one embodiment of the present invention, as long as it is a structure capable of smoothly flowing air. The shape may be square, round or any other polyhedron or irregular shape.

In addition, as described above, as long as the wiring allows, the edge of the signal transmission means 45 may be provided in a chamfered shape.

In addition, due to consideration of the spatial structure of the signal transmission means 45, it may also be formed as a closed curve of the slit (slit) form.

On the other hand, the heated air exiting the closed space 35 has a lower density than the air in other parts and thus tends to move upward.

Meanwhile, according to the installation structure of the plasma display device, the chassis base 30 may be vertically disposed, whereby the heated air to move upward tends to move in the direction of the arrow in FIG. The compressed air may flow through the second ventilator, the first ventilator, and the third ventilator 200, 100, and 300 sequentially from the sealed space 35.

That is, by smoothly flowing air in the closed space 35 heated by the circuit element 46, cooling of the circuit element 46 can be promoted, thereby ensuring stable operation of the circuit element 46. have.

4 is a cross-sectional view illustrating a plasma display device according to another embodiment of the present invention.

4 differs from FIG. 3 in that the end of the chassis base 30 is cut off and engaged with the bent end of the chassis bed 40 to form a confined space (35 in FIG. 3).

However, even in such a structure in which no enclosed space is formed, the at least one first vent part 100 and the third vent part 300 are provided on the signal transmission means 45 to be heated by heat from the circuit element 46. The same is true that air can flow more smoothly.

The arrangement of the ventilator 100 of the signal transmission means 45 and the second ventilator and the third ventilator 200 and 300 to facilitate a smooth flow of heated air opposed thereto is one embodiment for explaining the present invention. The configuration of a chassis base different from that described above, and thus the different arrangement of ventilation openings, is also intended to allow the air in the confined or open space between the chassis bed and the chassis base to flow by convection or forced exhaust. Of course it is within the scope of thought.

According to the plasma display device according to the present invention provided with the ventilators 100, 200, and 300, air heated by heat generated from the circuit element 46 is smoothly flowed through the ventilators 100, 200, and 300 so that It can promote heat dissipation.

The problem of overheating of the circuit elements is particularly problematic for a single scan plasma display device, but the present invention is not limited to such a single scan plasma display device, but a dual scan method. In the plasma display device of the present invention, it is naturally applicable as long as heat dissipation of the circuit elements is a problem.

According to the plasma display device equipped with the chassis bed having the above configuration, heat generated from circuit elements such as the TCP IC can be discharged more efficiently, such as the TCP IC, which is one of the biggest problems of the plasma display device. By solving the excessive heat generation problem of the circuit element, it is possible to ensure a stable operation of the circuit element.

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 (4)

A panel in which an image is implemented using plasma discharge; A chassis base coupled to the panel and supporting the panel; A circuit board for applying a predetermined signal to an electrode of the panel; Signal transmission means provided for electrical connection between the electrode of the panel and the circuit board, and having at least one circuit element mounted thereon; And A chassis bed for supporting said signal transmission means, And at least one first ventilating portion suitable for circulating heat generated from the mounted circuit element. The method of claim 1, At least one second ventilation part is formed at a portion of the chassis bed which is coupled to the chassis base to form an airtight space so as to face the first ventilation part so that air flows through the first ventilation part and the second ventilation part. And a plasma display device. The method of claim 2, The cover plate covering the upper part of the chassis bed to which the signal transmission means is coupled is provided with at least one third ventilation part facing the first ventilation part, so that the first ventilation part, the second ventilation part and the third ventilation part are provided. And a flow of air through the plasma display device. The method according to any one of claims 1 to 3, And the ventilation part is provided on at least one of the bent surfaces of the signal transmission means on a second surface of a closed curve or an open curve.

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