KR20060057476A - Plasma display panel - Google Patents

Abstract

The present invention provides a plasma display panel that improves the bearing capacity of the heat dissipation sheet and the heat sink while mitigating the shock transmitted to the panel of the present invention and at the same time dissipating heat generated from the panel.

Description

Plasma Display Panel {PLASMA DISPLAY PANEL}             

1 is a perspective view for explaining a general plasma display panel.

FIG. 2 is a side view illustrating the plasma display panel shown in FIG. 1. FIG.

3 is a perspective view for explaining a plasma display panel according to a first embodiment of the present invention.

4 is a side view showing a plasma display panel according to the present invention shown in FIG.

5 is a perspective view for explaining a plasma display panel according to a second embodiment of the present invention.

6 is a side view showing a plasma display panel according to the present invention shown in FIG.

7a to 7d is a view for explaining a support member according to a preferred embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

12, 102: Panel 14, 104: Front board                 

16, 106: rear substrate 20, 120: heat sink

10, 110: heat dissipation sheet 202: support member

The present invention relates to a plasma display panel, and more particularly, to a plasma display panel that improves the bearing capacity of the heat dissipation sheet and the heat sink while mitigating the shock transmitted to the panel and at the same time dissipating heat generated from the panel.

Recently, various flat panel displays have been developed to reduce weight and volume, which are disadvantages of cathode ray tubes. Such flat panel displays include liquid crystal displays, field emission displays, plasma display panels (hereinafter referred to as " PDPs "), and electro-luminescence displays. Device and the like.

The PDP emits a phosphor by 147 nm ultraviolet rays generated when the He + Xe, Ne + Xe or He + Ne + Xe gas discharges to display an image including characters or graphics. Such a PDP is not only thin and easy to enlarge, but also greatly improved in quality due to recent technology development. In particular, the three-electrode AC surface discharge type PDP lowers the voltage required for discharge by using wall charges accumulated on the surface during discharge, and has advantages of low voltage driving and long life because it protects the electrodes from sputtering caused by the discharge.

1 is a perspective view illustrating a general plasma display panel, and FIG. 2 is a side view illustrating the plasma display panel shown in FIG. 1.

1 and 2, a general PDP is formed on a panel 12 having a plurality of discharge cells, a heat sink 20 for dissipating heat generated from the panel 12, and a rear surface of the panel 12. And a heat dissipation sheet 10 for transferring heat generated from the panel 12 to the heat dissipation plate 20, and a heat dissipation plate 20 for dissipating heat transferred through the heat dissipation sheet 10.

Each discharge cell of the panel 12 includes a front substrate 14 including a scan electrode, a sustain electrode, an upper dielectric layer, and a protective film; A back substrate 16 including a data electrode, a lower dielectric layer, a partition wall, and a phosphor layer is provided. In addition, an inert gas for gas discharge is injected into each of the discharge cells.

The discharge cell is selected by the counter discharge between the data electrode and the scan electrode, and then maintains the discharge by the surface discharge between the scan electrode and the sustain electrode. In the discharge cell, the fluorescent material emits light by ultraviolet rays generated during sustain discharge, so that visible light is emitted to the outside of the cell.

As a result, the PDP having cells displays an image. In this case, the PDP implements a gray scale required for displaying an image by adjusting the discharge sustain period of the cell, that is, the number of sustain discharges, according to the video data.                         

The heat dissipation sheet 10 is formed or attached to the rear surface of the panel 12 to transfer heat generated from the panel 12 when the panel 12 is driven to the heat dissipation plate 20. Such a heat dissipation sheet 10 is formed of a material capable of transferring heat to release heat generated from the panel 12 to the outside.

Such a general plasma display panel adheres the heat dissipation sheet 10 after applying the adhesive on the panel 12, and when the heat dissipation sheet 10 is adhered onto the panel 12, the adhesive is applied to the heat dissipation sheet 10. After the application on the heat sink 20 is attached.

Therefore, the holding force to which the heat dissipation sheet 10 and the heat dissipation plate 20 are fixed on the panel 12 is lowered according to the adhesive properties.

Accordingly, it is an object of the present invention to provide a plasma display panel which improves the bearing capacity of a heat dissipation sheet and a heat sink to dissipate heat generated while mitigating a shock transmitted to the panel.

According to an aspect of the present invention, a plasma display panel includes a discharge space formed between an upper substrate and a lower substrate, a panel on which an image is displayed, a heat sink to dissipate heat generated from the panel, and a panel. On the back of the thermal conductivity is formed of a material having a thermal conductivity of 150 to 400 Watt / meter * Kelvin (W / mK), and has at least one heat dissipation sheet for transferring the heat generated to the heat dissipation plate.

The heat dissipation sheet of the plasma display panel according to the present invention is formed of at least one of aluminum (Al), silicon, acryl, carbon, or graphite, and has a thickness of 0.85. To 0.95 millimeters (mm).

In addition, the plasma display panel according to the present invention is further characterized by further comprising at least one support member for attaching the heat dissipation sheet on the back of the panel to support the panel and the heat dissipation plate.

In addition, each supporting member of the plasma display panel according to the present invention is formed of a metal material, and has a thickness of 0.2 mm or less.

Each support member of the plasma display panel according to the present invention is characterized by having at least one groove on at least one side to allow bubbles to be discharged to the outside.

In addition, the groove of the plasma display panel according to the present invention is formed side by side in at least one of the horizontal direction, vertical direction, diagonal direction, characterized in that the depth is formed within 0.1 mm (mm) from the surface of each support member. do.

Other objects and features of the present invention in addition to the above object will be apparent from the description of the embodiments with reference to the accompanying drawings.

Hereinafter, with reference to Figures 3 to 5 attached to a preferred embodiment of the present invention will be described in detail.

3 is a perspective view illustrating a plasma display panel according to a first exemplary embodiment of the present invention, and FIG. 4 is a side view illustrating the plasma display panel according to the present invention shown in FIG.

3 and 4, the PDP according to the first embodiment of the present invention includes a panel 102 having a plurality of discharge cells, a heat sink 120 for dissipating heat generated from the panel 102, and The heat dissipation sheet 110 formed on the rear surface of the panel 102 to transfer heat generated from the panel 102 to the heat dissipation plate 120, and the heat dissipation plate 120 dissipating heat transferred through the heat dissipation sheet 110. Equipped.

In addition, the first support member 204 for supporting the heat dissipation sheet 110 is fixed to the rear surface of the panel 102 and the heat dissipation plate 120 is fixed to the rear surface of the heat dissipation sheet 110. A second support member 206 is provided.

Each discharge cell of the panel 102 includes a front substrate 104 including a scan electrode, a sustain electrode, an upper dielectric layer, and a protective film; A back substrate 106 including a data electrode, a lower dielectric layer, a partition wall, and a phosphor layer is provided. In addition, an inert gas for gas discharge is injected into each of the discharge cells.

The discharge cell is selected by the counter discharge between the data electrode and the scan electrode, and then maintains the discharge by the surface discharge between the scan electrode and the sustain electrode. In the discharge cell, the fluorescent material emits light by ultraviolet rays generated during sustain discharge, so that visible light is emitted to the outside of the cell.                     

As a result, the PDP having cells displays an image. In this case, the PDP implements a gray scale required for displaying an image by adjusting the discharge sustain period of the cell, that is, the number of sustain discharges, according to the video data.

The heat dissipation sheet 110 may be formed or attached to the rear surface of the panel 102 to transfer heat generated from the panel 102 to the heat dissipation plate 120 when the panel 102 is driven. The heat dissipation sheet 110 is formed of a material capable of transferring heat to release heat generated from the panel 102 to the outside.

In addition, the heat dissipation sheet 110 is 0.85 to 0.95 millimeters (mm) of a material having a thermal conductivity of 150 to 400 Watt / meter * Kelvin (W / mK) in order to transfer most of the heat generated to the heat sink 120 It is preferably formed in thickness.

For example, the heat dissipation sheet 110 may be formed of a material such as aluminum (Al), silicon, silicon foam, acrylic, acrylic foam, urethane foam, carbon, or graphite. It is preferable to form to a thickness of 0.85 to 0.95 mm.

The support member 202 has a hardness lower than the hardness of the heat dissipation sheet 110 which transfers heat generated from the panel 102 to the heat dissipation plate 120 to dissipate heat, and the panel 102 and the heat dissipation sheet 110. And improves the bearing capacity of the heat sink (120).

The support member 202 may be formed of a material having a lower hardness than the heat dissipation sheet 110, for example, a metal material such as aluminum (Al), in the same shape as that of the heat dissipation sheet 110.                     

And, the support member 202 is preferably formed to be equal to the area of the heat radiation sheet 110 to a thickness of 0.2 mm or less.

The front surface of the first support member 204 is adhered to the panel 102, and the back surface is adhered to the heat dissipation sheet 110, so that the heat dissipation sheet 110 is adhered to the rear surface of the panel 102, so that the panel 102 is adhered to. ) And the heat dissipation sheet 110 to be fixed.

The front surface of the second support member 206 is bonded to the heat dissipation sheet 110, and the rear surface is adhered to the heat dissipation plate 120, so that the heat dissipation plate 120 is attached to the rear surface of the heat dissipation sheet 110, and the heat dissipation is performed. The sheet 110 and the heat sink 120 are supported to be fixed.

The plasma display panel attaches the first support member 204 to the panel 102 after applying an acrylic or silicon adhesive on the panel 102 and onto the first support member 204. After the adhesive is applied, the heat dissipation sheet 110 is attached.

The second support member 206 is attached after the adhesive is applied onto the heat dissipation sheet 110, and the heat dissipation plate 120 is attached after the adhesive is applied on the second support member 206, or the heat dissipation plate is provided. After attaching the second support member 206 to the 120, the heat dissipation sheet 110 and the first support member 204 may be attached to the panel 102.

3 to 4, the support member 202 is provided on the front and rear surfaces of the heat dissipation sheet 110 for transferring heat generated from the panel 102 to the heat dissipation plate 120, respectively. 110 can improve the bearing capacity.

As described above, bubbles are generated in the adhesive in a state where the adhesive is applied to attach the support member 202 to the panel 102, the heat dissipation sheet 110, and the heat dissipation plate 120. Therefore, the adhesive force is lowered due to bubbles generated in the pressure-sensitive adhesive, and the supporting force of the heat dissipation sheet 110 and the heat dissipation plate 120 may be lowered.

5 is a perspective view illustrating a plasma display panel according to a second exemplary embodiment of the present invention, and FIG. 6 is a side view illustrating the plasma display panel according to the present invention shown in FIG. 5.

5 and 6, the PDP according to the second embodiment of the present invention includes a panel 102 having a plurality of discharge cells, a heat sink 120 for dissipating heat generated from the panel 102, and A plurality of heat dissipation sheet 110 formed on the rear surface of the panel 102 to transfer heat generated from the panel 102 to the heat dissipation plate 120, and a heat dissipation heat dissipating heat transmitted through each heat dissipation sheet 110 ( 120).

The first heat dissipation sheet 110 is attached to the rear surface of the panel 102, and the support member 202 is attached to the rear surface of the first heat dissipation sheet 110. In addition, the second heat dissipation sheet 110 is attached to the back surface of the support member 202.

The heat dissipation sheet 110 has a thickness of 0.85 to 0.95 millimeters (mm) of a material having a thermal conductivity of 150 to 400 Watt / meter * Kelvin (W / mK) to transfer most of the heat generated to the heat sink 120. It is preferably formed.

For example, the heat dissipation sheet 110 may be formed of a material such as aluminum (Al), silicon, silicon foam, acrylic, acrylic foam, urethane foam, carbon, or graphite. It is preferable to form to a thickness of 0.85 to 0.95 mm.                     

The support member 202 has a hardness lower than the hardness of the heat dissipation sheet 110 which transfers heat generated from the panel 102 to the heat dissipation plate 120 to dissipate heat, and the panel 102 and the heat dissipation sheet 110. And improves the bearing capacity of the heat sink (120).

The support member 202 may be formed of a material having a lower hardness than the heat dissipation sheet 110, for example, a metal material such as aluminum (Al), in the same shape as that of the heat dissipation sheet 110, and has a thickness of 0.2. It is preferable to form the same as the area of the heat dissipation sheet 110 to less than mm.

The plasma display panel attaches the first heat dissipation sheet 110 to the panel 102 after applying an acrylic or silicone pressure-sensitive adhesive on the panel 102 and onto the first heat dissipation sheet 110. After applying the adhesive, the supporting member 202 is attached.

The second heat dissipation sheet 110 is attached after the adhesive is applied onto the support member 20, and the heat dissipation plate 120 is attached after the adhesive is applied on the second heat dissipation sheet 110.

5 to 6, provided with a plurality of heat dissipation sheet 110 to transfer the heat generated from the panel 102 to the heat dissipation plate 120, to improve the bearing capacity between each heat dissipation sheet (110) It may be provided with a support member 202 for.

As described above, bubbles are generated in the pressure-sensitive adhesive in a state where the pressure-sensitive adhesive is applied to attach the support member 202 to the panel 102, the heat radiation sheet 110, and the heat sink 120. Therefore, the adhesive force is lowered due to bubbles generated in the pressure-sensitive adhesive, and the supporting force of the heat dissipation sheet 110 and the heat dissipation plate 120 may be lowered.                     

7A to 7D are views for explaining a supporting member according to a preferred embodiment of the present invention.

5A to 5D, the support member 202 is formed with a groove 208 for guiding bubbles that may occur in the adhesive applied to the outside. The groove 208 is preferably formed from one end of the support member 202 to the other end.

The grooves 208 of the support member 202 are preferably formed on both sides of the support member 202, and as shown in FIG. 5A, are arranged on the support member 202 at a predetermined distance in the horizontal direction. A plurality of grooves 208 may be formed, or as shown in FIG. 5B, a plurality of grooves 208 may be formed side by side at a predetermined distance in the vertical direction.

In addition, as shown in Figure 5c, a plurality of grooves 208 are formed side by side at a predetermined distance in the diagonal direction, or as shown in Figure 5d, formed in parallel in the horizontal direction and the vertical direction at a predetermined distance, as shown in FIG. Thus, a plurality of grooves 208 that cross each other may be formed.

Such, the groove 208 of the support member 202 is preferably formed to 0.1mm or less.

As described above, the plasma display panel according to the present invention can efficiently dissipate heat of the panel by transferring heat generated from the panel when the panel is driven to the heat sink using a heat dissipation sheet.

In addition, in the plasma display panel according to the present invention, by attaching the heat dissipation sheet and the heat sink through a support member having a low hardness, the supporting force of the heat dissipation sheet and the heat sink can be improved.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the technical spirit of the present invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims.

Claims (9)

A plasma display panel in which a discharge space is formed between an upper substrate and a lower substrate. The panel which an image is displayed on, A heat sink for radiating heat generated from the panel; And a heat dissipation sheet formed of a material having a thermal conductivity of 150 to 400 Watt / meter * Kelvin (W / mK) on a rear surface of the panel. The method of claim 1, The heat dissipation sheet, Plasma display, characterized in that formed of at least one material of aluminum (Al), silicon (silicon), silicon foam (poly), acrylic (acryl), acrylic foam, urethane foam, carbon (carbon) or graphite (Graphite) panel. The method of claim 1, The heat dissipation sheet, Plasma display panel, characterized in that the thickness is 0.85 to 0.95 millimeters (mm). The method of claim 1, And at least one support member attaching the heat dissipation sheet on the rear surface of the panel to support the panel and the heat dissipation plate. The method of claim 4, wherein The support member, Plasma display panel, characterized in that formed of a metallic material. The method of claim 4, wherein The support member, A plasma display panel having a thickness of 0.2 mm or less. The method of claim 4, wherein Each support member, And at least one groove. The method of claim 7, wherein The groove is, And at least one of a horizontal direction, a vertical direction, and a diagonal direction. The method of claim 7, wherein The groove is, And a depth of 0.1 mm (mm) or less from the surface of each support member.

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