KR100416082B1 - Plasma display panel - Google Patents

Abstract

A plasma display panel is disclosed. The present invention provides a substrate comprising: an upper panel having a substrate, a transparent electrode and a bus electrode formed on the substrate, a dielectric layer filling the electrodes, and a protective film layer formed on the dielectric layer; A lower panel having an address electrode to be formed, a partition wall disposed on an upper surface of the electrode, and a phosphor layer applied between the partition walls; a stand supporting the upper and lower panels in a combined state; and the upper and lower panels And a circuit board that is electrically connectable to the stand and is installed horizontally on the stand.

Description

Plasma display panel {Plasma display panel}

The present invention relates to a plasma display panel, and more particularly, to a plasma display panel having an improved structure to improve mechanical reliability.

In the plasma display panel, electrodes are formed on opposite surfaces of two transparent glasses, and a discharge gas is injected therebetween, whereby a predetermined power is applied to the plasma display panel, using an image emitted by ultraviolet rays generated in the discharge space. Speak the display to implement. Plasma display panels are being spotlighted as next-generation displays in that they can be thin in thickness of several centimeters or less, can be made large, and have a wide viewing angle of 150 ° or more.

In order to manufacture such a plasma display panel, it may be divided into a process of manufacturing an upper panel, a process of manufacturing a lower panel, and a process of combining and modularizing them.

In order to manufacture the upper panel, forming a transparent electrode by forming an ITO film on a transparent glass substrate, forming a bus electrode on the transparent electrode, forming a dielectric layer filling the transparent and bus electrodes, And forming a protective film layer of a magnesium oxide film.

In order to manufacture the lower panel, a step of forming a sustain electrode having a shape orthogonal to the transparent electrode on a transparent glass substrate, a step of forming and firing a dielectric layer on an upper surface thereof, and applying a partition material on the dielectric layer to sand A process of forming a partition by a blast method, the process of apply | coating a phosphor layer between the said partitions, and the process of applying a sealing material along the edge of a lower panel.

The upper and lower panels completed by such a process are pressed by the fastening means at the edges while the upper and lower panels are aligned, and the inside of the panel is evacuated and sealed with the discharge gas. Next, a flexible printed cable and a substrate are mounted and completed through a predetermined inspection process.

In order to drive the completed plasma display panel, a higher driving voltage is required than other displays such as a liquid crystal display in order to generate ultraviolet rays. As a result, high power consumption is applied to a switching mode power supply (SMPS) board, which is a substrate used for plasma display panels, and therefore, attachment of a large transformer or heat sink is indispensable.

Since the SMPS board is currently attached to the rear surface of the plasma display panel completed as described above, there is a problem in mechanical reliability, and it can be said that the plasma display panel is no longer thin. In addition, since the operation of the plasma display panel causes electromagnetic noise (EMI noise) or heat dissipation problems caused by high voltage and high current switch driving, shielding of other boards is required, which adversely affects the image and has been a problem in realizing an image.

The present invention has been made to solve the above problems, and an object thereof is to provide a plasma display panel having improved mechanical reliability by improving a structure in which a board having high heat radiation or switching radiation noise is installed.

1 is a partial ablation perspective view illustrating a conventional plasma display panel;

2 is a perspective view schematically showing a plasma display panel according to the present invention;

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

10 ... plasma display panel 11 ... top panel

12 Lower panel 13 Upper board

14a, 14b ... electrode 15 ... bus electrode

16 first dielectric layer 17 protective layer

18 address electrode 19 second dielectric layer

100 ... bulk 110 ... phosphor layer

21.SMPS board 22..Transformers

23.Heat sink 24.Stand

In order to achieve the above object, the plasma display panel according to an aspect of the present invention,

A transparent substrate, a common and scan electrode formed in a strip form on the substrate, a bus electrode formed by narrowing a width of a portion of the lower surface of the electrodes, a first dielectric layer filling the electrodes, and the first dielectric An upper panel having a protective film layer formed on the layer;

A transparent substrate, an address electrode formed in a strip shape so as to be orthogonal to the common and scan electrodes, a partition wall disposed on an upper surface of the electrode to partition a discharge space, and a red, green, and blue phosphor layer applied between the partition walls. A lower panel having a;

A stand supporting the lower panel while the upper panel and the lower panel are coupled; And

And a circuit board electrically connected to the upper and lower panels and installed on the stand.

In addition, the circuit board is characterized in that the horizontal installation on the stand.

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

1 illustrates a plasma display panel 10 according to an embodiment of the present invention.

Referring to the drawings, the plasma display panel 10 includes an upper panel 11 forming a front surface of the panel 10 and a lower panel 12 coupled to the upper panel 11.

The upper panel 11 is provided with a transparent glass substrate 13, and a lower surface of the substrate 13 is formed with a strip-shaped common electrode 14a and a scan electrode 14b made of an ITO film. A part of the lower surface of the common and scan electrodes 14a and 14b is provided with a bus electrode 15 for narrowing the width and reducing line resistance. The common and scan electrodes 14a and 14b and the bus electrode 15 are embedded by the first dielectric layer 16. On the lower surface of the first dielectric layer 16, a protective film layer 17 made of a magnesium oxide film is formed.

On the other hand, in the lower panel 12 disposed to face the upper panel 11, a strip-shaped address electrode 18 is formed to be orthogonal to the common and scan electrodes 14a and 14b. The address electrode 18 is embedded by the second dielectric layer 19. A partition wall 100 is formed on an upper surface of the second dielectric layer 19 to partition a discharge space and prevent cross talk, and a red, green, and blue phosphor layer 110 is disposed between the partition walls 100. ) Is formed.

The process of manufacturing the plasma display panel 10 having such a structure includes the process of manufacturing the upper panel 11, the process of manufacturing the lower panel 12, and the upper and lower panels 11, 12. It can be classified as a process of modularizing with each other.

Referring to the process of manufacturing the upper panel 11 briefly, first, a transparent glass substrate 13 is provided, and a transparent conductive film for forming common and scan electrodes 14a and 14b is formed on the substrate 13. do. Subsequently, masking is performed using a photo mask, which is exposed, developed and etched to form the common and scan electrodes 14a and 14b.

Subsequently, a bus electrode 15 is formed on the lower surface of the common and scan electrodes 14a and 14b by photolithography, and the electrodes 14a, 14b and 15 are embedded to control the discharge current. One dielectric layer 16 is formed. Finally, the protective film layer 17 is formed to protect the discharge voltage and the lifetime of the panel 10.

Next, the process of manufacturing the lower panel 12 will be described. The lower substrate 12 made of transparent glass is provided. Subsequently, a transparent electrode film is formed on the lower substrate 12 by printing or sputtering. Next, an address electrode 16 having a form orthogonal to the common and scan electrodes 14a and 14b is formed using a photo mask.

When the address electrode 16 is formed, a second dielectric layer 19 filling the same is formed and fired. Subsequently, the partition wall material is coated on the upper surface of the second dielectric layer 19, the partition wall 100 is formed by sand blasting, and red, green, and blue phosphor layers are applied between the partition walls 100. Finally, the sealing member is applied along the edge of the lower substrate 12.

The upper and lower panels 11 and 12 completed as described above are completed as the plasma display panel 10 through a modularization process. That is, the upper and lower panels 11, 12 are in close contact with each other in a state in which they are aligned, and are coupled to each other using fastening means or the like.

Next, the inside of the panel 10 is evacuated using an exhaust device through an exhaust hole (not shown) formed in the lower substrate 12, and then a discharge gas is injected and encapsulated between the partition walls. Subsequently, the plasma display panel 10 is completed by mounting the flexible printed cable electrically connected to the panel 10 and the substrate.

In this case, all of the circuit boards are installed on the rear surface of the plasma display panel 10. According to the characteristics of the present invention, the SMPS board 21 for generating a high voltage and a high current stands for supporting the panel 10 from the bottom. It is provided on 24 and is electrically connected with the said panel 10.

That is, a circuit board such as the SMPS board 21 is prevented from generating switching noise during driving, and a large-capacity transformer 22 mounted on the board 21 or generated during operation is generated. The main body of the panel 10 in order to prevent mechanical reliability of the plasma display panel 10 or difficulty in thinning the panel 10 due to the weight or volume of an electronic component such as a heat sink 23 that emits heat. It will be installed separately from each other. In addition, the SMPS board 21 is preferably installed horizontally on the stand 24 to prevent a phenomenon such as vibration or dropping during movement or operation.

As such, the transfer of heat generated by the circuit board such as the SMPS board 21 to be located relatively far from the main body of the panel 10 is minimized, and electromagnetic interference can be prevented in advance, thereby enabling better image realization. It can be said.

As described above, in the plasma display panel of the present invention, a circuit board, such as an SMPS board, which generates a lot of heat, may be separated from the rear surface of the panel to provide the following effects.

Since the SMPS board, which occupies the most width in the plasma display panel, is placed on the stand, a thin panel can be realized, and the damage caused by the electromagnetic interference emitted from the SMPS board can be minimized. In addition, the mechanical reliability of the plasma display panel can be secured by separating and installing the SMPS board, which occupies a large weight, from the panel.

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 (3)

A transparent substrate, a common and scan electrode formed in a strip form on the substrate, a bus electrode formed by narrowing a width of a portion of the lower surface of the electrodes, a first dielectric layer filling the electrodes, and the first dielectric An upper panel having a protective film layer formed on the layer; A transparent substrate, an address electrode formed in a strip shape so as to be orthogonal to the common and scan electrodes, a partition wall disposed on an upper surface of the electrode to partition a discharge space, and a red, green, and blue phosphor layer applied between the partition walls. A lower panel having a; A stand for supporting the lower panel while the upper panel and the lower panel are coupled; And And a circuit board electrically connected to the electrode terminals of the upper and lower panels and installed horizontally on the stand to generate a high voltage and a high current. delete The method of claim 1, And the circuit board is an SMPS board.