KR100589389B1 - Plasma Display Panel - Google Patents

Abstract

Disclosed is a plasma display panel capable of reducing a temperature of a display panel and minimizing a temperature deviation across the front surface of the panel while realizing high luminance in a gas discharge display device.

Such a panel forms a heat transfer surface on a plane different from the outer surface on the outer side of the rear substrate, fills the heat transfer material with the heat transfer surface and closely couples the chassis member outward.

Since the contact area with the heat transfer material increases, the amount of heat released per unit time increases substantially, and since the grooves are formed on the rear substrate, the substrate can be lightened.

Plasma display. panel. Heat transfer material. heat emission. Backplane. Chassis

Description

Plasma Display Panel

1 is a side sectional view of a plasma display panel of a first embodiment according to the present invention;

FIG. 2 is a plan view illustrating an example of a rear substrate of FIG. 1; FIG.

3 is a plan view showing another example of the rear substrate shown in FIG.

4 is a cross-sectional view taken along the line A-A of FIG.

Fig. 5 is a side sectional view of the plasma display panel of the second embodiment in accordance with the present invention.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display panel, and more particularly, to a plasma display panel capable of lowering the temperature of the display panel while minimizing high brightness while realizing high luminance.

The plasma display is accompanied by a plasma discharge of the inert gas. It is based on the glow discharge which occurs when the ionized gas recombines with the display device using light emission at the vertically arranged matrix electrode intersections.

Such plasma displays have been spotlighted as large screen display devices because they can display beautiful images of self-luminous type and are easy to display on large screens, and are classified into counter discharge type and surface discharge type according to the configuration of electrodes. AC type of surface discharge structure is used.

In general, an AC plasma display corresponds to each discharge cell, and a plurality of rows of address electrodes are provided in a constant width on a rear substrate, and dielectric layers are formed on these electrodes, and partition walls are provided between the electrodes, and the partition walls are provided. Phosphor is applied in between.

The front substrate is provided with a discharge sustaining electrode, which is divided into a scanning electrode and a display electrode, and is covered with a dielectric layer and protected.

The discharge gas is filled between the electrodes of the rear substrate and the electrodes of the front substrate and these substrates are sealed to form discharge cells, so that when the address voltage is applied, an address discharge occurs in the discharge cell, and the cells are selected and provided to the display substrate. Plasma discharge occurs while a sustain voltage is applied between the electrodes.

 In such plasma displays, since the temperature of the panel rises due to discharge during operation, measures are taken to reduce the temperature of the panel.

In Japanese Patent Laid-Open No. 10-040823, a heat dissipation member is provided on the rear substrate side of the plasma display panel as a means for reducing the temperature variation of the panel while lowering the panel temperature even when the plasma display is increased. It is disclosed to fill a thermally conductive material between the rear substrates.

On the other hand, Japanese Patent Application Laid-open No. Hei 10-172446 discloses providing a cushioning material over the entire circumference of a thermally conductive material while using the above technical configuration in order to achieve the above object.

In Japanese Patent Laid-Open No. 10-254372, a groove portion and a protrusion portion are formed in a plasma display panel, and a heat conductive sheet is pressed in this portion. This publication discloses a matter in which the protruding portion collapses and is pushed into the groove part when the sheet is compressed in order to prevent the air layer remaining between the plasma display panel and the heat conductive sheet.

However, the technical matters disclosed above do not expect satisfactory heat dissipation effect because the area of the panel in contact with heat is limited, and does not consider the weight that increases as the heat dissipation means is installed.

The present invention has been invented to solve the problems of the prior art described above, and an object of the present invention is to realize a high brightness while improving the heat dissipation effect to minimize the temperature of the panel and reduce the weight of the panel. To provide.

In order to realize the object of the present invention, there is provided a gas discharge display device including a rear substrate, the rear substrate is provided with a means for increasing the surface area to substantially increase the contact area with the heat transfer material heat dissipation effect Provided are plasma display panels that can be obtained.

The surface area increasing means may be a groove substantially formed in the substrate, and the groove may be formed in various shapes.

The present invention also provides a plasma display panel that provides a surface area increasing means at a corresponding position of the chassis member coupled to the rear substrate.

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

1 is a side cross-sectional view of a plasma display device according to an embodiment of the present invention, FIG. 2 is a view showing a back substrate that can be used in the embodiment represented by FIG. 1, and FIG. 3 is shown in the embodiment represented by FIG. 4 is a cross-sectional view of the substrate shown in FIG. 2 or FIG. 3, and FIG. 5 is a side of a plasma display device according to another embodiment of the present invention. It is a cross section.

In FIG. 1, reference numeral 2 denotes a gas discharge display device, for example, a panel of a plasma display, in which discharge cells are formed by a plurality of electrodes in regions facing each other, and facing each other.

The rear substrate 2 and the front substrate receive heat generated by gas discharge during operation of the plasma display, and the present invention provides technical details for more effectively dissipating heat transferred to the substrate.

More specifically, the heat dissipation means is provided on the outer surface of the rear substrate 2, and in this embodiment, the means for increasing the heat transfer area is further provided to further enhance the heat dissipation effect.

The heat transfer area increasing means provided in this embodiment is to have a heat transfer surface 8 having a plane different from that of the outer side surface 6 of the rear substrate 2.

Therefore, another orthogonal heat transfer surface 10 may be formed between the outer surface 6 and the heat transfer surface 8 or may be a single curved surface.

The heat transfer surfaces 8 are preferably provided at positions corresponding to the discharge cells of the plasma display. More specifically, as shown in FIG. 2, the heat transfer surfaces 8 have a shape or a shape of a groove formed in one direction. As shown in FIG. 3, the grooves may be provided as grooves having independent shapes corresponding to the discharge cells.

The grooves may be made in various shapes such as circles, quadrangles, pentagons, and hexagons, and may be formed by a well-known sandblasting method after patterning a rear substrate.

In this way, the chassis member 12 is fixed through separate fixing means to correspond to the heat transfer area increasing means provided on the rear substrate 2 so that the heat transfer area increasing means can transfer heat to the chassis member 12. have.

Although not shown, the chassis member 12 may have a structure in which protrusions are formed on a surface thereof to effectively dissipate heat.

The heat transfer material 14 is used as a means for transferring the heat transferred to the rear substrate 2 to the chassis member 12. The heat transfer material 14 is the heat transfer surface 8 and the chassis. It is positioned in contact with the member 12 at the same time.

The heat transfer material 14 is formed in a gel state and filled in the grooves formed of the heat transfer surfaces 8 and 10. The chassis member 12 may be aluminum, and the heat transfer material 14 may be a silicon-based material in a gel state. These materials not only facilitate heat transfer but also provide shock absorbing effects.

In the plasma display according to the present invention, the heat transferred to the rear substrate 2 is conducted to the heat transfer surface 8 and another heat transfer surface 10. These heat transfer surfaces 8 and 10 are the outer surfaces of the rear substrate. Since it is on a different plane from (6), it is possible to substantially increase the heat dissipation effect by increasing the surface area of the rear substrate (2).

That is, since the heat transfer surface 10 is increasing and the heat transfer material 14 is in contact with the heat transfer surface 10, heat generated in the rear substrate 2 is transferred to the heat transfer material and the chassis member 12 through the increased surface area. Through the atmosphere.

FIG. 5 is a side cross-sectional view of a plasma display device according to another embodiment of the present invention, and components having the same function as the above embodiment are denoted by the same reference numerals as the above embodiment.

The plasma display according to this embodiment provides the heat transfer area increasing means to the rear substrate 2 in the same manner as in the above-described embodiment, but the surface area at the corresponding position of the chassis member 12 in contact with the heat transfer material 14. It is different from the above embodiment to provide a means to increase the number.

The means for increasing the surface area provided in this embodiment is to form a corresponding groove 16 for each portion of the chassis member 12 corresponding to the groove of the rear substrate 2.

The groove 16 also has a heat transfer surface 20 formed on a plane different from the inner surface 18 as in the above embodiment.

In this case, since the heat transfer material 14 is also filled in the groove 16, the heat transferred to the rear substrate 2 may be transferred to a wider heat transfer surface and released into the atmosphere.

The groove 16 formed in the chassis member 12 may also be formed in various shapes such as rectangular shape, polygonal shape or circular shape.

In particular, in the second embodiment of the present invention, the groove is formed in the rear substrate and the chassis member and at the same time, the heat transfer material is filled, so that the shock transmitted from the outside can be more effectively absorbed.

As described above, since the plasma display according to the present invention increases the surface area by forming grooves in the rear substrate, the contact area with the heat transfer material filled therein is increased, so that heat generated in the substrate can be quickly discharged, thereby providing high brightness. It is effective for the display panel required.

In addition, if the groove is formed in the substrate as described above, the weight of the entire substrate is considerably reduced, so that the effect of thinning the module is expected.

Claims (8)

A panel of a gas discharge display device including a back substrate, A heat transfer material provided on the rear substrate to transfer heat transferred to the substrate to the outside; And a surface area increasing means provided on the rear substrate to increase an area in contact with the heat transfer material to facilitate heat dissipation of the substrate. The plasma display panel of claim 1, wherein the surface area increasing means has a heat transfer surface formed on a plane different from an outer surface of the rear substrate. The plasma display panel of claim 2, wherein the heat transfer surface further comprises a heat transfer surface orthogonal to the outer surface. The plasma display panel according to claim 2, wherein the surface area increasing means is polygonal or circular. The plasma display panel according to claim 1, wherein the surface area increasing means is formed corresponding to each discharge cell of the plasma display. A panel of a gas discharge display device including a back substrate, A heat transfer material provided on the rear substrate to transfer heat transferred to the substrate to the outside; Surface area increasing means provided on the rear substrate to increase an area in contact with the heat transfer material to facilitate heat dissipation of the substrate; A chassis member coupled to the outside of the rear substrate; And surface area increasing means provided in the chassis member to increase an area of the chassis member in contact with the heat transfer material. The plasma display panel of claim 6, wherein the surface area increasing means provided in the chassis member is formed as a groove. The plasma display panel of claim 7, wherein the groove is formed at a position corresponding to the surface area increasing means provided on the rear substrate.

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