KR20080093642A

KR20080093642A - Plasma display device

Info

Publication number: KR20080093642A
Application number: KR1020070037611A
Authority: KR
Inventors: 강현창; 이광국
Original assignee: 삼성에스디아이 주식회사
Priority date: 2007-04-17
Filing date: 2007-04-17
Publication date: 2008-10-22

Abstract

A plasma display apparatus is provided to obtain uniform temperature distribution characteristic on a chassis base by coating materials having vibration damping and heat dissipation characteristics on the chassis base. A plasma display apparatus includes a plasma display panel(110), a chassis base(120), driving boards(130), and a coating layer(160). The chassis base supports the plasma display panel by mounting the plasma display panel on one surface thereof. The driving boards are mounted on the other surface of the chassis base opposite to the plasma display panel. The coating layer is formed on one surface of the chassis base and made of vibration damping and heat dissipation materials.

Description

Plasma display device

1A is a cross-sectional view of a conventional plasma display device.

Figure 1b is an exploded perspective view showing the arrangement of the heat radiation sheet and the adhesive member of the conventional plasma display device.

2 is an exploded perspective view of a plasma display device according to an embodiment of the present invention.

3A is a cross-sectional view of a plasma display device according to an embodiment of the present invention.

Figure 3b is an exploded perspective view showing the arrangement of the coating film and the adhesive member of the plasma display device according to an embodiment of the present invention.

110: plasma display panel 120: chassis base

130: drive board 140: connection member

150: adhesive member 160: coating film

The present invention relates to a plasma display device, and more particularly, to a plasma display device in which a surface of a chassis base is coated with a heat dissipation and vibration damping material to reduce noise of a panel and improve temperature distribution.

A plasma display panel is a flat panel display device that discharges a sealed discharge gas between two substrates on which electrodes are formed, and excites a phosphor layer by ultraviolet rays generated by the discharge to realize a desired image. The display device employing such a plasma display panel has a large screen, high quality, ultra-thin, light weight and excellent wide viewing angle, and is simpler to manufacture than other flat panel display devices and is easy to be enlarged. As the spotlight.

Typically, the plasma display device includes a plasma display panel, driving boards, and a chassis base. The plasma display panel is mounted on the front surface of the chassis base, and the driving boards are mounted on the rear surface of the chassis base. In the plasma display panel, noise and vibration are generated by electrostatic force between electrodes, and circuit elements installed in the driving boards generate noise and vibration during operation.

Since the plasma display panel is attached to the chassis base in a surface adhesive manner, noise and vibration generated from the plasma display panel are transferred to the driving board, thereby further amplifying the noise and vibration of the driving board.

In addition, the plasma display apparatus is an apparatus for displaying an image using plasma generated by gas discharge, and a high voltage and a high current are generated therein, thereby generating a large amount of heat from the plasma display panel. Conventionally, a heat dissipation sheet is interposed between the plasma display panel and the chassis base, and the heat dissipation sheet transfers heat generated from the inside of the plasma display panel to the chassis base and releases the heat.

FIG. 1A illustrates a cross-sectional view of a conventional plasma display apparatus, and FIG. 1B is a plan view illustrating an arrangement of a heat dissipation sheet and an adhesive member in the plasma display apparatus of FIG. 1A.

1A and 1B, a conventional plasma display apparatus includes a plasma display panel 10 including a front substrate 15 and a rear substrate 11, and a chassis base 20. A heat dissipation sheet 40 is interposed between the chassis base 20 and the plasma display panel 10, and a plasma display panel is mounted on one surface of the chassis base 20, so that the plasma display is disposed by the chassis base 20. The panel 10 is supported. The driving board 30 is mounted on the other surface of the chassis base 20 so that the driving board 30 is supported by the chassis base 20. The chassis base 20 and the plasma display panel 10 are compressed by a double-sided adhesive 40.

In addition, Korean Laid-Open Patent Publication No. 2006-0057770 discloses a plasma display device in which a heat dissipation sheet and a vibration damper are laminated between a plasma display panel and a chassis base, and the plasma display panel is fixed to the chassis base by double-sided tape.

As described above, the conventional plasma display device emits heat generated from the plasma display panel to the chassis base through the heat dissipation sheet and the vibration damping sheet between the chassis base and the plasma display panel, thereby improving heat dissipation effect and reducing noise and vibration. I could make it.

In the plasma display panel 10, since the front substrate 11 and the back substrate 15 are made of glass, the mechanical rigidity is weak, and thus the mechanical stability of the plasma display panel 10 is maintained by the chassis base 20. Therefore, it is difficult to combine the plasma display panel 10 made of a glass substrate with the chassis base 20 by screwing. Therefore, the plasma display panel 10 is attached to the front surface of the chassis base 20 using the double-sided tape 50.

Therefore, in the conventional plasma display apparatus, the heat dissipation sheet 40 or the vibration damping sheet cannot be interposed between the double-sided tape 50 for fixing the plasma display panel 10 to the chassis base 20. As a result, there is a temperature spread of the panel and there is a limit in reducing noise and vibration.

An object of the present invention is to provide a plasma display device which can improve the temperature spread of a panel and reduce noise by coating the surface of the chassis base with vibration damping and heat dissipating materials.

In order to achieve the above object, the plasma display device of the present invention includes a plasma display panel; A chassis base mounted on one surface of the plasma display panel to support the plasma display panel; Drive boards mounted on the other surface of the chassis base opposite to the plasma display panel; And a coating film formed entirely on at least one surface of one surface or the other surface of the chassis base and made of a heat dissipation and vibration damping material.

The plasma display panel is adhered to the coating film of the chassis base through a double-sided tape or an adhesive.

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

2 is a perspective view of a plasma display device according to an embodiment of the present invention. 3A is a cross-sectional view of the plasma display device shown in FIG. 2. FIG. 3B is an exploded perspective view showing the arrangement of the coating film and the adhesive member coated on the chassis base in the plasma display device shown in FIG. 2.

2, 3A, and 3B, the plasma display apparatus 100 according to the present invention includes a plasma display panel (PDP) 110 for displaying an image and circuit elements 131 for driving the plasma display panel 110. Driving boards 130 including the first and second chassis bases 120 supporting the plasma display panel 110 and the driving boards 130.

The plasma display panel 110 is mounted on a front surface of the chassis base 120, and the plasma display panel 110 is supported by the chassis base 120. The plasma display panel 110 includes a front substrate 111 and a rear substrate 112. The front substrate 111 includes a transparent glass substrate including components such as PbO, SiO 2, B 2 O 3, and the like. The back substrate 112 may also include a transparent glass substrate similar to the front substrate 111. The front substrate 111 and the rear substrate 112 are sealed to each other by frit glass.

The plasma display panel 110 includes an address electrode arranged on the rear substrate 112 and a pair of sustain electrodes arranged on the front substrate 111 in a direction crossing the address electrodes. According to a driving voltage applied to the address electrode and the pair of sustain electrodes, phosphors coated in the discharge cells partitioned by the partition walls are excited to implement an image.

The driving boards 130 are mounted on the rear surface of the chassis base 120 so that the chassis base 120 supports the driving boards 130. The driving boards 130 are mounted to the chassis base 120 by using screws (not shown) which are fastening means. The driving boards 130 mounted on the chassis base 120 include a power supply board, an image processing board, a logic board, an address buffer board, an X board, a Y board, and the like.

The chassis base 120 may have a shape corresponding to that of the plasma display panel 110 and have sufficient structural rigidity to support the plasma display panel 110. Therefore, the chassis base 120 may be formed of a material having excellent rigidity and thermal conductivity, for example, a metal material such as aluminum, copper, and iron.

In addition, the chassis base 120 may serve not only to support the plasma display panel 110 and the driving boards 130 but also to function as a heat sink and an EMI (Electromagnitic interference) ground function of the plasma display device.

The driving boards 130 mounted on the chassis base 120 are electrically connected to the plasma display panel 110 by the connection member 140. The connection member 140 includes a tape carrier package (TCP). The driver IC 141 is mounted on the connection member 140 to apply an electrical signal from the driving board 130 to the plasma display panel 110.

The front surface of the chassis base 120 is formed with a coating film 160 made of a damping and heat-radiating material. The coating layer 160 is coated on the entire surface of the chassis base 120. Although the coating layer 160 is illustrated as being formed only on the front surface of the chassis base 120, for example, the surface bonded to the back substrate 111, the rear surface on which the driving boards 130 are mounted. It may be formed over the entire surface of the chassis base 120 including.

The plasma display panel 110 is supported such that two glass substrates are coupled to each other to maintain mechanically stable rigidity by the chassis base 120. Therefore, the front surface of the plasma display panel 110 and the chassis base 120 is attached using an adhesive member, for example, a double-sided tape 150.

At this time, the double-sided tape 150 is attached along the edge of the coating film 160 between the plasma display panel 110 and the chassis base 120 having the coating film 160 formed on the surface thereof. And the coating film 160 is bonded. In addition, by adding a silicone-based or acrylic adhesive on the coating layer 160 formed on the surface of the chassis bait 120 to fix the plasma display panel 110 directly to the chassis base 120 without using a double-sided tape. It may be.

Since the circuit elements 131 are mounted on the driving boards 130, heat generated from the circuit elements 131 is generated. Therefore, a heat dissipation member (not shown) may be arranged on the driving boards 130 to dissipate and dissipate heat generated from the circuit elements 131.

In addition, a sound absorbing member may be installed on the heat radiating member to absorb noise and vibration generated from the driving board 130. The sound absorbing member may include a material having high noise and vibration damping rate, for example, a sound absorbing and damping material made of polyurethane or an inorganic material.

Although not shown in the drawing, the plasma display apparatus 100 has a front cover disposed in front of the plasma display panel 110. A rear cover is disposed behind the driving boards 130, and a combination of these covers forms a plasma display device.

According to the plasma display device of the present invention as described above, by coating the surface of the chassis base with a material having a vibration damping and heat dissipation characteristics, it is possible to obtain a uniform temperature distribution characteristic over the entire surface of the chassis base as well as Noise can be reduced.

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

Claims

A plasma display panel;

A chassis base mounted on one surface of the plasma display panel to support the plasma display panel;

Driving boards mounted on the other surface of the chassis base opposite to the plasma display panel; And

And a coating film formed on the entire surface of at least one of the one surface or the other surface of the chassis base and comprising a heat dissipation and vibration damping material.

The method of claim 1,

And the plasma display panel is adhered to the coating film of the chassis base through a double-sided tape or an adhesive.