KR100683764B1 - Plasma display device - Google Patents

Abstract

The present invention discloses a plasma display device. Plasma display device according to the invention,

A plasma display panel in which an image is formed by discharge;

A chassis positioned behind the plasma display panel to support the plasma display panel;

A circuit board disposed at the rear of the chassis to drive the plasma display panel;

A signal transmission medium connected from the circuit board to the plasma display panel beyond the chassis;

A cover plate surrounding the signal transmission medium and coupled to the chassis so that heat generated from the signal transmission medium is transferred; And

And a guide stand fixed to the chassis to support the chassis.

The cover plate and the guide stand are in contact with each other so that heat transferred to the cover plate may be discharged to the outside through the guide stand.

Description

Plasma display apparatus

1 is a schematic exploded perspective view of a conventional plasma display device.

FIG. 2 is a schematic cross-sectional view taken along the line II-II of FIG. 1.

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

4 is a schematic exploded perspective view of the plasma display panel shown in FIG. 3.

FIG. 5 is a schematic cross-sectional view taken along the line VV of FIG. 3.

FIG. 6 is a schematic enlarged perspective view of a main part of the plasma display device shown in FIG. 3.

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

100 ... plasma display device 110 ... plasma display panel

120 ... chassis 126 ... coupling member

130 ... signaling medium 140 ... circuit board

150 ... reinforcement 160 ... cover plate

165 ... heat dissipation sheet 170 ... guide stand

171 ... Base 172 ... Stand

172a ... heat sink fins 178 ... heat transfer medium

The present invention relates to a plasma display device, and more particularly, to a plasma display device that can effectively radiate heat.

BACKGROUND ART In general, a plasma display device is used to display an image by using a gas discharge phenomenon, and is excellent in various display capabilities such as display capacity, brightness, contrast, afterimage, viewing angle, and the like. have.

Such a plasma display device is shown in FIG. 1 is a schematic exploded perspective view of a conventional plasma display device.

Referring to FIG. 1, the plasma display apparatus 1 includes a plasma display panel 10. The plasma display panel 10 includes a front substrate 11 and a rear substrate 12 disposed on the rear surface of the front substrate 11. Discharge cells separated by a partition (not shown) are formed between the front substrate 11 and the rear substrate 12, and the discharge cells are filled with discharge gas. In this discharge cell, phosphors are stacked.

Meanwhile, a plurality of address electrodes (not shown) are arranged side by side on the rear substrate 12, and discharge sustaining electrode pairs (not shown) are arranged on the front substrate 11 in a direction crossing the address electrodes. It is arranged. When the discharge is performed in the discharge gas between the electrodes by the voltage applied to the electrodes, the phosphor is excited by the radiation of ultraviolet light accompanying the discharge to emit light to form an image.

In addition, the plasma display apparatus includes a chassis 20 which is disposed substantially parallel to the plasma display panel 10 and supports the plasma display panel 10, and a plasma display panel 10 of the chassis 20. A circuit board 40 mounted on the opposite side (rear side) of the attachment surface (front side) and electrically connected to the plasma display panel 10 to drive the same. In addition, the reinforcement 50 is formed to protrude from the edge of the chassis 20 is attached to the chassis 20 to prevent the bending of the chassis 20.

In order to dissipate heat generated from the plasma display panel 10 to the outside, a heat dissipation sheet 15 having good thermal conductivity is interposed between the plasma display panel 10 and the chassis 20.

Various circuit elements 41 are mounted on the circuit board 40. The signal transmission medium 130 is connected to the plasma display panel 110 from the circuit elements beyond the chassis 120 and transmits an electrical signal from the circuit element to the plasma display panel 110. The signal transmission medium 130, particularly the TCP 30, has an integrated circuit mounted on its rear surface, which generates heat at a high temperature during its driving, and thus requires a heat dissipation structure.

As one of such heat dissipation structures, the cover plate 60 is disposed on the rear surface of the TCP 30 in which the electronic element is mounted. The cover plate 60 is disposed along the longitudinal direction of the chassis 20 to enclose the TCP 30. Heat generated from the TCP 30 is conducted to the cover plate 60 is discharged to the outside.

In addition, the conventional plasma display apparatus 1 includes a guide stand 70 to support the plasma display panel 10 and the chassis 20 on the ground, for example. The guide stand is generally made up of a pair and fitted to the fastening member 71 fixed to the chassis 20. As shown in FIG. 2, the guide stand 70 and the cover plate 60 are spaced apart from each other.

On the other hand, the heat generated in the TCP (30) is conducted to the cover plate 60 and the cover plate 60 performs heat dissipation through heat exchange with the surrounding air, but in the TCP (30) high temperature heat is continuous There is a problem that satisfactory heat dissipation is not achieved because it occurs. Accordingly, a heat dissipation structure capable of more smoothly dissipating the signal transmission medium, in particular the TCP 30, is required.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and provides a plasma display device having an improved structure for effectively dissipating heat generated from a signal transfer medium for transmitting a signal from a circuit board to a plasma display panel, particularly TCP. There is a purpose.

Plasma display device according to the present invention for achieving the above object,

A plasma display panel in which an image is formed by discharge;

A chassis positioned behind the plasma display panel to support the plasma display panel;

A circuit board disposed at the rear of the chassis to drive the plasma display panel;

A signal transmission medium connected from the circuit board to the plasma display panel beyond the chassis;

A cover plate surrounding the signal transmission medium and coupled to the chassis so that heat generated from the signal transmission medium is transferred; And

And a guide stand fixed to the chassis to support the chassis.

The cover plate and the guide stand are in contact with each other so that heat transferred to the cover plate may be discharged to the outside through the guide stand.

According to the present invention, the cover plate and the guide stand are preferably formed integrally.

Further, according to the present invention, in order to conduct the heat of the cover plate to the guide stand, it is preferable that a heat conducting medium is interposed between the cover plate and the guide stand.

In addition, according to the present invention, the guide stand is disposed long along the height direction of the chassis, the side of the plurality of heat dissipation fins protruding along the longitudinal direction of the chassis is preferably formed long along the height direction of the chassis. Do.

In addition, according to the present invention, the signal transmission medium is preferably a TCP (tape carrier package) formed of a package in the form of a tape integrated circuit.

Hereinafter, a plasma display device according to an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings.

3 is a schematic exploded perspective view of a plasma display device according to a preferred embodiment of the present invention, FIG. 4 is a schematic exploded perspective view of the plasma display panel shown in FIG. 3, and FIG. 5 is a schematic sectional view taken along the line VV of FIG. 3. 6 is a schematic enlarged perspective view of a main part of the plasma display device shown in FIG. 3.

3 to 6, the plasma display apparatus 100 according to an exemplary embodiment of the present invention includes a plasma display panel 110, a chassis 120, a circuit board 140, and a signal transmission medium 130. do.

The plasma display panel 110 includes the front electrode 111, the pair of sustain electrodes 114 that are part of an electrode including the Y electrode 112 and the X electrode 113 formed on the rear surface 111a of the front substrate. A front dielectric layer 115 covering the sustain electrode pairs 114 and a passivation layer 116 covering the front dielectric layer 115 are provided. Each of the Y electrode 112 and the X electrode 113 includes transparent electrodes 112b and 113b formed of ITO and the like and bus electrodes 112a and 113a made of a metal having high conductivity. In addition, the plasma display panel 110 is disposed to face the front substrate 111 to be coupled to the front substrate 111 and the sustain electrode on the front surface 117a of the back substrate 117. Address electrodes 118 that are part of electrodes formed to intersect the pair 114, a rear dielectric layer 119 covering the address electrodes 118, and a discharge cell c, which is a space formed in the rear dielectric layer 119 to cause discharge. Barrier ribs (W) for dividing the layers), and a phosphor layer (f) disposed in the discharge cell (c).

The above-described plasma display panel 110 is only one example that can be adopted in the plasma display apparatus 100 according to the present invention, and various kinds of plasma display panels can be adopted in the plasma display apparatus 100 according to the present invention. As such, the protection scope of the present invention is not limited by the above-described plasma display panel 110.

The chassis 120, which may be manufactured by casting or pressing, is disposed at the rear of the plasma display panel 110 to be combined with the plasma display panel 110 to support the plasma display panel 110. The chassis 120 is formed with a reinforcing portion 150 that is folded to prevent the bending of the chassis 120 at its edge. In addition, the heat dissipation sheet 165 having good thermal conductivity is interposed between the plasma display panel 110 and the chassis 120 to dissipate heat generated from the plasma display panel 110. The heat dissipation sheet 165 transfers heat generated from the plasma display panel 110 to the chassis 120.

The circuit board 140 is mounted on the rear surface of the chassis 120, and the circuit board 140 is equipped with components for driving the display panel 110, wherein the components are the plasma display panel 110. ) Refers to a circuit device for controlling and applying a component for supplying power and a signal for realizing an image to the display panel 110, for example, integrated devices.

These circuit elements drive the plasma display panel 110 by applying an electrical signal to the plasma display panel 110 through the signal transmission medium 130, and the signal transmission medium 130 is driven from the circuit board 140. It is connected to the plasma display panel 110 beyond the chassis 120. Recently, a tape carrier package (TCP) in which an integrated circuit is formed in a tape-shaped package is used as the signal transmission medium 130. In this embodiment, TCP 130 is also used as a signal transmission medium. In the TCP 130, a plurality of wires extend in the longitudinal direction of the TCP, and at least some of the wires pass through electronic devices mounted on the TCP. In particular, when an integrated circuit chip is used as an electronic device, a lot of heat is generated in the integrated circuit chip. Accordingly, a heat dissipation structure for heat dissipation of the signal transmission medium 30, in particular the TCP 30, is required. The detailed heat dissipation structure of the TCP 130 will be described later.

The cover plate 160 has a cross-sectional shape of approximately 'b' to wrap the TCP 130 so that heat generated in the TCP 130 can be conducted. In addition, the cover plate 160 is disposed long along the longitudinal direction of the chassis 120 is coupled to the lower portion of the chassis 120. In FIG. 3, the cover plate 160 is disposed only on the lower side of the chassis 120. However, the cover plate 160 may be disposed on the upper side of the chassis 120.

A pair of guide stands 170 are provided to support the plasma display panel 110 and the chassis 120. The guide stand 170 is disposed vertically with respect to the support part 171 placed on the ground and the support part 171 to support the plasma display panel 110 and the chassis 120 on the ground. And one end is fixed to the support portion 171 and the other end is provided with a stand 172 is fixed to the chassis 120. The stand 172 is fixed to the coupling member 126 fixed to the chassis 120. The coupling member 126 is formed with an insertion groove 126a so that the stand 172 has the insertion groove 126. ) Is fixed by, for example, a screw (not shown).

In the plasma display apparatus 100 according to the present invention, the cover plate 160 and the guide stand 170 are disposed to be in contact with each other as a heat dissipation structure capable of smoothly dissipating the TCP 130. That is, heat generated from the TCP 130 is transferred to the guide stand 170 through the cover plate 160 to perform heat dissipation. Since the guide stand 170 has a large heat capacity, the heat transferred to the cover plate 160 is conducted to the guide stand 170 at a high speed, so that the heat conduction from the TCP 130 to the cover plate 160 is smooth. Is done. In addition, as illustrated in FIG. 5, the heat conduction medium having a high thermal conductivity is formed between the cover plate 160 and the guide stand 170 so that heat conduction is smoothly performed from the cover plate 160 to the guide stand 170. (178) For example, it is preferable that silicon etc. are interposed. The guide stand 170 releases heat conducted from the cover plate 160 to the outside by exchanging heat with surrounding air. The guide stand 170 includes a plurality of heat dissipation fins 172a on the outer surface of the stand 172 so that the heat exchange area with the surrounding air is widened. The plurality of heat dissipation fins 172a are formed to protrude with respect to the outer surface of the stand 172, and are disposed long along the height direction of the chassis 120.

Plasma display device 100 according to the present invention having the above configuration can not only improve the heat dissipation efficiency of the TCP 130 by contacting the guide plate 170 having a large heat capacity to the cover plate 160, By efficiently performing heat dissipation, there is an advantage that a malfunction of the TCP 130 due to overheating can be prevented.

Until now, the cover plate 160 and the guide stand 170 have been described and illustrated as being in contact with each other by the heat conducting medium 178, but are not necessarily limited thereto, as shown in FIG. The plate 160 and the guide stand 170 may be integrally fixed. Here, the meaning of being fixed integrally means that the cover plate and the guide stand are joined by welding, riveting, screwing, or the like, or the cover plate and the guide stand are formed of integral parts by a method such as casting. it means.

As described above, the plasma display apparatus according to the present invention has an advantage of efficiently dissipating the signal transmission medium, particularly TCP.

Although the present invention has been described with reference to one embodiment shown in the accompanying 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. Could be. Accordingly, the true scope of protection of the invention should be defined only by the appended claims.

Claims (5)

A plasma display panel in which an image is formed by discharge; A chassis positioned behind the plasma display panel to support the plasma display panel; A circuit board disposed at the rear of the chassis to drive the plasma display panel; A signal transmission medium connected from the circuit board to the plasma display panel beyond the chassis; A cover plate surrounding the signal transmission medium and coupled to the chassis so that heat generated from the signal transmission medium is transferred; And And a guide stand fixed to the chassis to support the chassis. And the cover plate and the guide stand are in contact with each other so that heat transferred to the cover plate can be discharged to the outside through the guide stand. The method of claim 1, And the cover plate and the guide stand are integrally fixed. The method of claim 1, And a heat conducting medium interposed between the cover plate and the guide stand to conduct heat from the cover plate to the guide stand. The method of claim 1, The guide stand is disposed long along the height direction of the chassis, the side of the plasma display device characterized in that the plurality of heat dissipation fins protruding along the longitudinal direction of the chassis is formed long along the height direction of the chassis. The method of claim 1, The signal transmission medium is a plasma display device, characterized in that the tape (Tape carrier package) formed of a package in the form of a tape integrated tape.

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