KR20050122959A - Plasma display panel assembly having the improved dissipative mean - Google Patents

Abstract

A plasma display assembly is disclosed. The present invention is a panel assembly; and a chassis base for supporting it; a heat dissipation sheet interposed between the panel assembly and the chassis base; an adhesive member for coupling the chassis base to the panel assembly; and heat dissipation at an upper end of the panel assembly. A heat dissipation means connected to the sheet and dissipating heat of the panel assembly transferred from the heat dissipation sheet to the outside, wherein the heat generated from the panel assembly can be discharged to the heat dissipation means via the heat dissipation sheet, and thus the entire area of the panel assembly. The temperature nonuniformity at can be eliminated.

Description

Plasma display panel assembly having the improved dissipative mean

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display assembly, and more particularly, a plasma having a heat dissipation means having excellent thermal conductivity between a panel assembly and a chassis base, and at the same time, a heat dissipation means having a heater sink installed to improve heat dissipation performance. A display assembly is provided.

Typically, a plasma display panel assembly forms predetermined discharge electrodes on opposite surfaces of a plurality of substrates, and injects a discharge gas into a closed discharge space between the substrates. The flat display device is a flat display device that implements an image by using light emitted by exciting a fluorescent material of a phosphor layer by ultraviolet rays generated in a discharge space by applying power.

The plasma display assembly manufactures a front panel and a rear panel, respectively, and couples them to each other, couples the chassis base to the rear of the panel assembly, and attaches a driving circuit board capable of transmitting electrical signals with the panel assembly to the rear of the chassis base. It is manufactured by mounting them in a case together.

Referring to FIG. 1, a conventional plasma display assembly 100 includes a panel assembly 110 having a front panel 111, a back panel 112 coupled thereto, and an adhesive member 120. The chassis base 130 coupled to the panel assembly 110, the cover plate 140 disposed to be spaced apart from the chassis base 130 by a predetermined interval, and disposed between the chassis base 130 and the cover plate 140. Flexible printed cable (150), the panel assembly (110) and the filter assembly (160) provided at the front, a case (170) for accommodating them, and a filter assembly with respect to the case (170). And a filter holder 180 for fixing 160.

In the conventional plasma display assembly 100, a heat dissipation sheet 120 is interposed between the panel assembly 110 and the chassis base 130 to discharge through the chassis base 130 generated from the panel assembly 110. .

However, the heat generated from the panel assembly 110 is accumulated without being radiated to the outside smoothly, and the accumulated heat is generated to the front of the panel assembly 110 so that the panel assembly 110 and the filter assembly 160 are generated. It will heat the air in between. The heated air is concentrated at the upper side of the panel assembly 110 corresponding to the hatched area A, causing a problem of temperature unevenness of the panel assembly 110.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and includes a plasma display having improved heat dissipation means capable of effectively dissipating heat generated from the panel assembly through a heat dissipation means having excellent thermal conductivity between the panel assembly and the chassis base. It is an object to provide a device assembly.

Another object of the present invention is to provide a plasma display assembly having improved heat dissipation means having a heat sink installed in a filter holder for fixing a filter assembly.

In order to achieve the above object, the plasma display assembly having an improved heat dissipation means according to an aspect of the present invention,

Panel assembly;

A chassis base for supporting the panel assembly;

A heat dissipation sheet interposed between the panel assembly and the chassis base;

An adhesive member for coupling the chassis base to the panel assembly; And

And heat dissipation means connected to a heat dissipation sheet at an upper end of the panel assembly, and dissipating heat of the panel assembly which is exposed to the outside of the panel assembly and transferred from the heat dissipation sheet to the outside.

In addition, the heat dissipation means is characterized in that the thermal conductivity is 10 W / mK or more.

In addition, the heat dissipation means is characterized in that it is made of any one selected from a metal sheet, a thermally conductive resin, a composite material, and a carbon-based sheet.

Further, the heat dissipation means is overlapped with the upper end of the heat dissipation sheet along the transverse direction of the heat dissipation sheet, characterized in that protrudes toward the upper end of the panel assembly via the adhesive member.

Further, the chassis base corresponding to the adhesive member is characterized in that the predetermined groove portion is inserted into the adhesive member is formed.

In addition, the end of the heat dissipation means is characterized in that the heater sink is attached.

In addition, the heater sink is formed is characterized in that the fixed to the filter holder for supporting the filter assembly installed in front of the panel assembly.

In addition, an air gap of a predetermined space is formed between the heat dissipation sheet and the chassis base such that the heat dissipation sheet is not in close contact with the chassis base.

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

2 illustrates a plasma display assembly 200 according to an embodiment of the present invention.

Referring to the drawings, the plasma display assembly 200 includes a panel assembly 210, a chassis base 230 coupled to the panel assembly 210, and a driving circuit board coupled to the chassis base 230. 290, a flexible printed cable 250 electrically connecting the panel assembly 210 and the driving circuit board 290, a filter assembly 260 installed in front of the panel assembly 210, and It includes a case 270 that accommodates.

The panel assembly 210 includes a front panel 211 and a back panel 212 coupled with the front panel 211, wherein the front panel 211 is patterned on the front substrate and the front substrate. An X and Y electrode, a dielectric layer filling the X and Y electrodes, and a protective layer coated on the surface of the dielectric layer, wherein the back panel 212 crosses the back substrate and the X and Y electrodes on the back substrate. The address electrode patterned in the direction, a dielectric layer filling the address electrode, a partition wall disposed between the front substrate and a discharge space, and a red, green, and blue phosphor layer coated inside the partition wall. have.

The chassis base 230 is coupled to the rear of the panel assembly 210. The panel assembly 210 and the chassis base 230 includes at least one heat dissipation sheet 221 and a double-sided tape 222 disposed along an edge of the heat dissipation sheet 221. In addition, a heat dissipation means 310 having a heater sink 340 is interposed between the heat dissipation sheet 221 and the double-sided tape 222.

The chassis base 230 is a plate made of a metal having excellent heat dissipation, and a driving circuit board 290 is provided on a rear surface of the chassis base 230. A plurality of electronic components 291 are mounted on the driving circuit board 290.

In addition, the chassis base 230 is provided with a chassis reinforcing member 320 in the form of a strip in order to reinforce its strength, or is disposed to be spaced apart from the chassis base 230 by a predetermined interval to cover the upper and lower ends of the cover plate 240 It may be further provided.

The flexible printed cable 250 is disposed between the chassis base 230 and the cover plate 240. Both ends of the flexible printed cable 250 electrically connect each electrode terminal of the panel assembly 210 and the driving circuit board 290 to each other.

The filter assembly 260 is installed in front of the panel assembly 210. The filter assembly 260 is installed to block reflection of electromagnetic waves generated from the panel assembly 210, infrared rays, neon light emission, or external light.

An anti-reflection film is attached to the filter assembly 260 to prevent visibility deterioration due to reflection of external light on a transparent substrate, and an electromagnetic shielding layer is formed to effectively block electromagnetic waves generated while driving the panel assembly 210. In addition, a selective wavelength absorption film is provided to shield unnecessary light emission of near infrared rays by plasma of an inert gas used for neon light emission and screen light emission.

The panel assembly 210, chassis base 230, drive circuit board 290, and filter assembly 260 are housed in a case 270. The case 270 includes a front cabinet 271 installed in front of the filter assembly 260 and a back cover 272 installed behind the drive circuit board 290. A plurality of vent holes 273 are formed at upper and lower ends of the back cover 272.

On the other hand, the filter holder 280 is provided on the back of the filter assembly 210. The filter holder 280 has a press portion 281 for pressing the filter assembly 260 against the front cabinet 271 and a direction in which the panel assembly 210 is disposed from the press portion 281. It includes a bent fixing portion (282).

In addition, a filter mounting portion 330 is provided at the rear edge of the front cabinet 271. The filter mounting part 330 is positioned to face the fixing part 282 and fixes the filter assembly 280 to the front cabinet 271 by screwing.

3 is an enlarged view of a portion of FIG. 2.

Here, the same reference numerals as in the above-described drawings indicate the same members having the same function.

Referring to the drawings, the chassis base 230 has a main body portion 231 disposed in parallel with the panel assembly 210 and a direction in which the panel assembly 210 is disposed from upper and lower ends of the main body portion 231. It includes a bent portion 232 bent in the opposite direction.

A strip shaped chassis reinforcement member 320 is attached to an upper end of the main body 231 to prevent deformation of the chassis base 230 due to the large area of the plasma display assembly 200. A cover plate 240 is disposed at an upper end of the chassis base 230 so as to be spaced apart from each other by a predetermined interval to surround the chassis base 230.

The flexible printed cable 250 is disposed between the chassis base 230 and the cover plate 240. The flexible printed cable 250 includes a plurality of driving chips 251, a wiring 252 connected to the driving chip 251, and a film 253 having flexibility to protect the wiring 252. have.

In this case, the driving chip 251 is disposed between the chassis reinforcing member 320 and the cover plate 240, and a thermal grease 351 is disposed between the chassis reinforcing member 320 and the driving chip 251. A thermal conductive sheet 352 is interposed between the driving chip 251 and the cover plate 240.

Here, at least one heat dissipation sheet 221 is attached to a central portion of the outer surface of the rear panel 212 facing the main body 231. The heat dissipation sheet 221 is preferably made of a sheet having excellent heat dissipation performance, such as a silicone sheet, an acrylic sheet, or a urethane sheet, with no fear of bending or breaking.

The heat dissipation sheet 221 is not in close contact with the main body 231 so that heat generated from the circuit board 290 is not transferred to the panel assembly 220, so that the heat dissipation sheet 221 and the chassis base 230 are not in close contact with each other. ), An air gap of a predetermined space is formed.

In addition, a double-sided tape 222 is attached to the edge of the region where the heat dissipation sheet 221 is attached. The double-sided tape 222 is interposed between the back panel 212 and the main body 231 to attach the chassis base 230 to the panel assembly 220.

At this time, the heat dissipation means 310 is connected to the heat dissipation sheet 221 to improve the lateral heat transfer of the heat dissipation sheet 221 to the heat generated from the panel assembly 210.

The heat dissipation means 310 is preferably made of a material having a thermal conductivity of 10 W / mK or more, because if the thermal conductivity is lower than this, the heat dissipation efficiency is reduced. As the heat dissipation means 310, any one of a metallic sheet excellent in thermal conductivity such as copper or aluminum, a thermal conductive resin, a composite material, or a carbon-based sheet can be selected and used.

One end of the heat dissipation means 310 is coupled to the upper end of the heat dissipation sheet 221, and the other end extends toward the upper end of the panel assembly 210 through the double-sided tape 222.

In this case, a predetermined groove is formed in the main body portion 231 corresponding to the portion to which the double-sided tape 222 is attached, and the double-sided tape 222 is inserted into the groove to reduce its thickness and provide a buffering role. You could do it.

In addition, the heat dissipation means 310 has a heater sink 340 is formed at the end in order to increase the heat exchange efficiency. The heater sink 340 may be formed integrally with the heat dissipation means 310 or may be separately provided and attached thereto.

An end of the heat dissipation means 310 in which the heater sink 340 is formed is fixed to an outer surface of the fixing unit 282 of the filter holder 280. Alternatively, the length of the heat dissipation means 310 may be shortened so that the end of the heat dissipation means 310 in which the heater sink 340 is formed may be disposed above the panel assembly 220 without the need for fixing.

Meanwhile, in order to prevent interference when an end portion of the flexible printed cable 250 is connected to the electrode terminal of the panel assembly 220, a predetermined through hole 311 is formed in the heat dissipation means 310. An end of the flexible printed cable 250 crosses the through hole 311.

Referring to the operation of the plasma display assembly 200 having the above configuration is as follows.

When power is applied from the outside, heat generated from the panel assembly 210 is discharged through the heat dissipation sheet 220. In addition, heat generated from the driving chip 251 of the flexible printed cable 250 is discharged through the chassis reinforcing member 320 and the cover plate 240.

Heat generated from the panel assembly 210 is formed between the panel assembly 210 and the chassis base 230 by natural convection by air flowing from the outside through the vent hole 273 of the back cover 272. It cools quickly in the air gap.

In addition, a part of the heat transmitted from the heat dissipation sheet 221 attached to one surface of the panel assembly 210 is discharged to the outside through the heat dissipation means 310 connected thereto, the discharged heat is fixed to the filter holder 280 It is delivered to the heater sink 340 may maximize the heat dissipation effect.

As described above, the plasma display assembly having the improved heat dissipation means according to the present invention can obtain the following effects.

First, a heat dissipation sheet is installed between the panel assembly and the chassis base, and a heat dissipation means connected to the heat dissipation sheet at the upper end side of the panel assembly, so that heat generated from the panel assembly can be discharged to the heat dissipation means via the heat dissipation sheet. Therefore, the temperature nonuniformity in the whole area of the panel assembly can be eliminated.

Second, as the temperature of the panel assembly can be lowered, bright afterimage can be prevented.

Third, by providing the heater sink at the end of the heat dissipation means, the heat dissipation performance can be further improved.

Fourth, as the heat dissipation sheet is not in close contact with the chassis base, heat generated from the chassis base is not transferred to the panel assembly.

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.

1 is a cross-sectional view of a portion of a conventional plasma display assembly cut out;

2 is an exploded perspective view illustrating a plasma display assembly according to an embodiment of the present invention;

3 is a partial cross-sectional view showing a portion where the heat dissipation means of FIG.

<Brief description of symbols for the main parts of the drawings>

200 ... plasma display assembly 210 ... panel assembly

211 ... front panel 212 ... back panel

221 Heat dissipation sheet 222 Double-sided tape

230.Chassis base 231.

232 bend 240 cover plate

250 ... flexible printed cable 260 ... filter assembly

270 ... case 280 ... filter holder

290 Drive circuit board 310 Heat dissipation means

340 ... heat sink

Claims (10)

Panel assembly; A chassis base for supporting the panel assembly; A heat dissipation sheet interposed between the panel assembly and the chassis base; An adhesive member for coupling the chassis base to the panel assembly; And And heat dissipation means connected to a heat dissipation sheet at an upper end of the panel assembly, the heat dissipation means being exposed to the outside of the panel assembly to dissipate heat of the panel assembly transferred from the heat dissipation sheet to the outside. One plasma display assembly. The method of claim 1, And said heat dissipation means having a thermal conductivity of 10 W / mK or more. The method of claim 2, And the heat dissipation means is one selected from a metal sheet, a thermal conductive resin, a composite material, and a carbon-based sheet. The method of claim 1, And the heat dissipation means overlaps with an upper end of the heat dissipation sheet along the transverse direction of the heat dissipation sheet, and protrudes toward the upper end of the panel assembly via an adhesive member. The method of claim 4, wherein And a predetermined groove portion into which the adhesive member is inserted is formed in the chassis base corresponding to the adhesive member. The method of claim 1, And a heater sink attached to an end portion of the heat dissipation means. The method of claim 6, And wherein said heater sink is integrally formed from said heat dissipation means. The method of claim 6, And the heater sink is detached from the heat dissipation means and attached to an end thereof. The method of claim 6, And a portion of the heater sink is fixed to a filter holder for supporting a filter assembly installed in front of the panel assembly. The method of claim 1, And an air gap of a predetermined space is formed between the heat dissipation sheet and the chassis base so that the heat dissipation sheet is not in close contact with the chassis base.