KR100573126B1 - Plasma display device - Google Patents

Abstract

An object of the present invention is to provide a plasma display device which combines a signal transmission means by vacuum suction force. To achieve this object, a plasma display panel, a chassis base disposed on a rear surface of the plasma display panel, and the chassis base are provided. A substrate on which a circuit for driving the plasma display panel is disposed, a signal transmission means electrically connecting the driving circuit board and the plasma display panel, and having at least one electronic device mounted thereon, and the chassis base. And a reinforcing member disposed on a rear surface of the driving unit, wherein the signal transmission means is connected to the plasma display panel from the driving circuit board while covering the edge of the chassis base while being closely supported by the reinforcing member. An outer material layer is formed between the reinforcing member and the portion of the inner space formed by the signal transmission means, the reinforcing member, and the outer material layer. And a pressure in the inner space is smaller than a pressure outside the inner space.

Description

Plasma display device

1 is a cross-sectional view of a typical plasma display panel,

2 is a cross-sectional view of a plasma display device according to an embodiment of the present invention;

FIG. 3 is a plan view of the plasma display device along the A direction of FIG. 2;

4 is a detailed view of a portion B along the direction A of FIG. 2.

Explanation of symbols on the main parts of the drawings

200: plasma display device 210: plasma display panel

220: chassis base 230: drive circuit board

240: heat conductive medium 250: reinforcing member

260: outer material layer 265: inner material layer

267: internal space 270: TCP

275 electronic device

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display device, and more particularly, to a plasma display device that couples signal transmission means by vacuum suction force.

Plasma display device is a flat panel display device that displays images by using gas discharge phenomenon. It has excellent display capability such as display capacity, brightness, contrast, afterimage and viewing angle, and is thin and can display large screen. It is attracting attention as the next generation large flat panel display device that can replace the. In the plasma display apparatus, the plasma display panel and the driving circuit board are electrically connected. Recently, TCP, in which an integrated circuit is formed in a tape-shaped package, is used.

1 shows a plasma display apparatus 100 in which TCP 170 is provided as a signal transmission means.

The plasma display apparatus 100 represents a character or an image by using gas discharge, and includes a plasma display panel 110 including a front substrate 111 and a rear substrate 112, and a chassis base 120 disposed on a rear surface of the plasma display apparatus 100. And a circuit board 130 disposed on the rear surface of the chassis base 120 and driving the plasma display panel 110. The thermal conductive medium 140 is inserted between the driving circuit board 130 and the chassis base 120 to transfer heat generated from the driving circuit board 130 to the chassis base 120. The TCP 170 connects the electrical signals between the plasma display panel 110 and the driving circuit board 130. The TCP 170 connects an address buffer connector (not shown) of the driving circuit board 130 and the plasma display panel 110. Since the address buffer connector (not shown) of the driving circuit board 130 is spaced apart from the rear surface of the chassis base 120 by a predetermined height, the TCP 170 may be formed at the edge of the chassis base 120 by the reinforcing member 150. 125 is maintained at the same height as the address buffer connector (not shown), and is bent while surrounding the edge 125 of the chassis base 120 to be connected to the plasma display panel 110. In addition, the edge 125 of the chassis base 120 is bent toward the rear of the chassis base 120 to be connected to the end of the reinforcing member 150.

Heat is concentrated in a portion of the TCP 170 in which the electronic device 175 for driving the plasma display panel 110 is mounted. If the internal heat is not emitted to the outside, the stable operation of the electronic device 175 is inhibited. Therefore, as shown, the heat transfer medium 160 is installed on the back of the TCP 170 on which the device 175 is mounted. Heat generated from the element 175 is discharged to the outside. In addition, a heat conductive sheet 182 is inserted between the TCP 170 and the heat transfer medium 160, and a grease 181 is provided between the TCP 170 and the reinforcing member 150 to promote heat transfer. It is inserted.

The heat transfer medium 160 is fastened to the reinforcing member 150 and the heat transfer medium 160 by the bolt 190 as shown. Therefore, when an excessive tightening force is applied to the bolt 190 when the bolt 190 is fastened, there is a problem that the electronic device 175 mounted on the TCP 170 is damaged by the heat transfer medium 160. And, when repairing the TCP (170), there was a problem in that the bolt 190 of the heat transfer medium 160 to work to loosen. In addition, when the TCP 170 makes contact with a metallic mechanism such as the chassis base 120 or the reinforcing member 170, a sharp protrusion such as a burr of the mechanism is an SR layer of the TCP 170 (not shown). ) And contact with a circuit pattern layer (not shown) of TCP 170 causes short circuit between TCP 170 and the mechanism.

A method for solving this problem is disclosed in Korean Patent Publication No. 2000-0062936. Here, a technique is disclosed in which a heat radiation conductor pattern is formed on a rear surface of a rear substrate of a plasma display panel to radiate heat without attaching a separate heat transfer medium to TCP. However, this method is not only required to form a separate conductor pattern on the back substrate, but also does not provide a means for suppressing damage to TCP caused by contact with the mechanism part.

The present invention provides a plasma display device that combines the signal transmission means by the vacuum suction force in order to solve the above problems.

In order to achieve the above and other objects, the present invention provides a plasma display panel, a chassis base disposed on the rear surface of the plasma display panel, and a circuit disposed on the rear surface of the chassis base to drive the plasma display panel. And a reinforcing member disposed on the rear surface of the chassis base, the signal transmission means electrically connecting the driving circuit board and the plasma display panel, and having at least one electronic device mounted thereon. Is tightly supported by the reinforcement member and surrounds an edge of the chassis base and is connected to the plasma display panel from the driving circuit board, and surrounds a portion where the electronic device is projected between the signal transmission means and the reinforcement member. The outer material layer Is formed, and an inner material layer is formed in a part of an inner space formed by the signal transmission means, the reinforcing member, and the outer material layer, and the pressure in the inner space is smaller than the pressure outside the inner space. A plasma display device is provided.

In the present invention, preferably, the inner material layer may be formed between the electronic device and the reinforcing member in the plasma display device.

In the present invention, preferably, the outer material layer or the inner material layer may be formed of silicon in the plasma display device.

In the present invention, preferably, the outer material layer or the inner material layer may be formed of grease in the plasma display device.

Preferably, in the plasma display apparatus, the reinforcing member and the chassis base may be integrated.

In the present invention, preferably, the signaling means may be TCP.

Also in the present invention, preferably, the signaling means may be COF.

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

2 to 4, a plasma display apparatus 200 according to an exemplary embodiment of the present invention is shown. 2 is a cross-sectional view of the plasma display apparatus 200, and FIG. 3 is a plan view of the plasma display apparatus 200 in the direction A of FIG. 2. 4 is a detailed view of the portion B along the direction A of FIG. 2, where the TCP 270 is removed.

The plasma display apparatus 200 is disposed on a plasma display panel 210 including a front substrate 211 and a rear substrate 212, a chassis base 120 disposed on a rear surface thereof, and a rear surface of the chassis base 220. And a circuit board 230 for driving the plasma display panel 210. A thermal conductive medium 240 is inserted between the driving circuit board 230 and the chassis base 220 to transfer heat generated from the driving circuit board 230 to the chassis base 220. However, they 220 and 230 do not insert the heat conducting medium 240, but screws (not shown) between a boss (not shown) formed in the chassis base 220 and a hole (not shown) formed in the driving circuit board 230. It can also be fixed using). Signal transmission means 270 is connected to the plasma display panel 210 and the driving circuit board 230 to transfer the electrical signals, such as the signal transmission means 270 may be used TCP or COF. have. In the first embodiment according to the present invention, TCP 270 is provided as the signal transmitting means 270. In the TCP 270, an electronic element 275 such as a driving IC is mounted. The TCP 270 connects the address buffer connector (not shown) of the driving circuit board 230 and the plasma display panel 210. The address buffer connector (not shown) of the driving circuit board 230 is spaced apart from the rear surface of the chassis base 220 by a predetermined height. The TCP 270 is connected to the edge 225 of the chassis base 220 by the reinforcing member 250 at the same height as the address buffer connector (not shown), and is bent while wrapping the edge of the chassis base 220. Connected to the plasma display panel 210. In addition, the edge 225 of the chassis base 220 is bent toward the rear surface of the chassis base 220 and is connected to the end of the reinforcing member 250.

The reinforcement member 250 may be disposed along the edge of the rear surface of the chassis base 220 separately from the chassis base 220, but the reinforcement member 250 may be integrated with the chassis base 220.

2 and 4, an external material layer 260 is formed between the TCP 270 and the reinforcing member 250 to surround a portion in which the electronic device 275 is projected. In addition, the internal space 267 is formed by the TCP 270, the reinforcing member 250, and the external material layer 260. An inner material layer 265 is formed between the electronic device 275 and the reinforcing member 250 in the inner space 267. The outer material layer 260 or the inner material layer 265 may be formed using various materials, but preferably, may be formed using silicon. In addition, the outer material layer 260 or the inner material layer 265 may be formed using grease. Here, the pressure Pin in the interior space 267 is lower than the pressure Pout outside the interior space C. Accordingly, the TCP 270 is tightly coupled to the reinforcing member 250 by the pressure difference Pout-Pin between the pressure Pin in the internal space 267 and the pressure Pout outside the internal space C. . Further, when the outer material layer 260 is formed of silicon or grease, the adhesion of the silicon or grease increases the bonding force between the TCP 270 and the reinforcing member 250. In addition, the inner material layer 265 enables the electronic device 275 to be safely seated on the reinforcing member 250.

The inner material layer 265 and the outer material layer 260 may be combined with the TCP 270 after forming the reinforcing member 250, but the inner material layer 265 and the outer material layer may be first formed on the TCP 270. After forming the 260 may be combined with the reinforcing member (250). After combining the TCP 270 and the reinforcing member 250, air is removed from the inner space 267 to lower the pressure Pin in the inner space 267 than the pressure Pout outside the inner space C. Thus, they can be joined without using a separate bolt.

Like reference numerals in the drawings shown above indicate the same members.

The plasma display device according to the present invention has the following effects.

First, since the signal transmission means can be combined with the reinforcing member without using the bolt, there is no possibility of damage of the electronic device by the bolt fastening. In addition, there is no need to loosen the fastened bolt during disassembly for repair and replacement of the signal transmission means, thereby improving work efficiency.

Second, since contact with metallic mechanisms, such as chassis bases or heat transfer media, is reduced, the risk of electrical short between the signal transmission means and the metallic mechanisms due to damage to the signaling means is reduced.

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 (7)

A plasma display panel; A chassis base disposed on a rear surface of the plasma display panel; A substrate arranged on a rear surface of the chassis base and having a circuit for driving the plasma display panel; Signal transmission means for electrically connecting the driving circuit board and the plasma display panel and having at least one electronic device mounted thereon; And And a reinforcing member disposed on the rear surface of the chassis base, The signal transmission means is connected to and supported by the reinforcing member, and is connected to the plasma display panel from the driving circuit board while surrounding the edge of the chassis base. An outer material layer is formed between the signal transmission means and the reinforcing member to surround a portion where the electronic device is projected, An inner material layer is formed in a portion of an inner space formed by the signal transmission means, the reinforcing member, and the outer material layer, and the pressure in the inner space is smaller than the pressure outside the inner space. . The plasma display apparatus of claim 1, wherein the inner material layer is formed between the electronic device and the reinforcing member. The plasma display apparatus of claim 1, wherein the outer material layer or the inner material layer is formed of silicon. The plasma display apparatus of claim 1, wherein the outer material layer or the inner material layer is formed of grease. The plasma display apparatus as claimed in claim 1, wherein the reinforcing member and the chassis base are integrally formed. The plasma display apparatus of claim 1, wherein the signal transmitting means is TCP. The plasma display apparatus of claim 1, wherein the signal transmission means is COF.

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