KR20060040831A - Panel assembly and plasma display panel assembly using the such - Google Patents

Abstract

A panel assembly and a plasma display assembly using the same are disclosed. The present invention includes a front and rear substrate; and a plurality of discharge electrodes disposed in the discharge cell. Since the front and rear substrate are formed with heat deformation preventing means for preventing deformation during firing, Thermal deformation due to heat applied when forming various types of thin films to be formed can be minimized.

Description

A panel assembly and a plasma display assembly using the same {Panel assembly and plasma display panel assembly using the such}

1 is a cross-sectional view showing a conventional panel assembly,

2 is a plan view illustrating a state in which the substrate of FIG. 1 is deformed;

3 is an exploded perspective view illustrating a part of a panel assembly according to an embodiment of the present invention;

4 is a plasma display assembly to which the panel assembly of FIG. 3 is applied;

5 is an exploded perspective view illustrating an enlarged portion of FIG. 4.

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

300 ... panel assembly 310 ... front panel

311 ... Front substrate 311a ... First thermal strain relief

360 ... back panel 361 ... back board

361a .... 2nd Heat Strain Relief 401 Chassis Base

404 ... drive circuit section 405 ... filter assembly

408 ... case

The present invention relates to a plasma display assembly, and more particularly, to a panel assembly having an improved edge structure of a substrate in order to prevent deformation of the substrate, and a plasma display assembly using the same.

Typically, the plasma display assembly uses light emitted by ultraviolet rays generated in a discharge space by forming a discharge electrode on opposite surfaces of a plurality of substrates and applying a predetermined power in a state in which discharge gas is injected into the discharge space. And a flat display device for realizing an image.

The plasma display assembly manufactures and combines a front panel and a rear panel, respectively, assembles a chassis base on the rear surface of the panel assembly, mounts a driving circuit unit on the chassis base so as to transmit electrical signals with the panel assembly, and This is accomplished by going through the inspection process and then accepting it in the case.

Referring to FIG. 1, a conventional panel assembly 100 includes a front substrate 101, a rear substrate 102, X and Y electrodes 103 and 104 formed on an inner surface of the front substrate 101, A front dielectric layer 105 filling the X and Y electrodes 103 and 104, a passivation layer 106 formed on a surface of the front dielectric layer 105, and an address electrode formed on an inner surface of the back substrate 102. 107, a back dielectric layer 108 filling the address electrode 107, a partition wall 108 disposed between the front and back substrates 101 and 102, and an inner side of the partition wall 108. The coated red, green, and blue phosphor layers 109 are included.

The conventional panel assembly 100 is formed by forming various types of films on the inner surfaces of the front and rear substrates 101 and 102 and then encapsulating gas, which has a problem as shown in FIG. 2. have.

That is, the front and rear substrates 101 and 102 are formed with various kinds of films including the X and Y electrodes 103 and 104, the address electrode 107, and the like, to form an image display area 101a ( 102a, the edges of the display areas 101a and 102a, and the dummy areas 101b and 102b for shaping various kinds of films, and the edges of the dummy areas 101b and 102b. And the terminal regions 101c and 102c for connecting the discharge electrode and the external terminal.

In this case, in order to form the various kinds of films, a firing process is essentially performed. Since the firing process proceeds at a high temperature of several hundred degrees, the front and back substrates 101 and 102 made of transparent glass may be deformed due to repeated heat treatment.

This thermal deformation of the front and back substrates 101 and 102 is due to the overall shrinkage phenomenon caused by the constant shrinkage of the substrates 101 and 102 itself. Since the shrinkage can be predicted to some extent, the shrinkage can be predicted and applied to the design of the substrates 101 and 102.

However, another cause of thermal deformation of the front and back substrates 101 and 102 is an irregular and unpredictable case. That is, when predetermined heat is applied to the front and rear substrates 101 and 102, the upper ends of the front and rear substrates 101 and 102 extend left and right, and conversely, the lower ends contract to the left and right, and the dotted line As indicated by, it may cause deformation of the fan shape.

Therefore, in order to improve the thermal deformation of the front and back substrates 101 and 102, the glass is minimized through separate processing during manufacturing, but distortion due to thermal deformation is still maintained.

When thermal deformation occurs in the front and rear substrates 101 and 102 in this way, the front and rear substrates 101 and 102 are applied along the edges of the opposite surfaces, for example, the terminal regions 101c and 102c. The frit glass sealing them from the outside is not uniformly bonded, which causes noise increase.

The present invention is to solve the above problems, by forming a heat deformation preventing means along the edge of the substrate, the panel assembly minimizes the thermal deformation of the substrate during the firing process of various types of film formed on the inner surface of the substrate and It is to provide a plasma display assembly using the same.

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

A plurality of substrates having a front substrate and a rear substrate disposed to face the substrate;

And a plurality of discharge electrodes disposed in discharge cells formed between the front and rear substrates,

The substrate is characterized in that the thermal deformation preventing means is formed to prevent deformation during firing.

In addition, the heat deformation preventing means is characterized in that the chamfered shape formed by cutting the edge of the substrate.

In addition, the heat deformation preventing means is formed by forming an edge of the substrate in a diagonal line, respectively, characterized in that the entire substrate is formed in an octagon.

Further, the heat deformation preventing means is characterized in that each of the edges of the substrate formed in a curve.

In addition, the heat deformation preventing means is formed by connecting the edges of the substrate with at least two diagonal lines, respectively, characterized in that the entire substrate is formed of an octagonal polygon or more.

Further, the substrate is divided into a display area for displaying an image, a dummy area at the edge of the display area, and a terminal area at the edge of the dummy area, and the heat deformation preventing means is formed in the terminal area.

Plasma display assembly according to another aspect of the present invention,

A front panel and a back substrate are disposed to face each other, and a plurality of discharge electrodes are formed on opposite surfaces of the front and rear substrates, and a panel assembly encapsulated by frit glass along opposite surfaces of the front and rear substrates. ;

Heat deformation preventing means formed on the front and back substrates to prevent thermal deformation during the firing process;

A chassis base disposed behind the panel assembly and supporting the panel assembly;

A circuit unit configured to transfer electrical signals between the panel assembly and the chassis base; And

And a case accommodating the panel assembly, the chassis base, and the circuit unit together.

In addition, the heat deformation preventing means is characterized in that the chamfered shape formed by partially cutting the corners of the front and back substrate.

In addition, the heat deformation preventing means is characterized in that the edges of the front and back substrate is formed in a curved or a plurality of diagonal lines, respectively.

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.

3 is a partial cutaway view of the panel assembly 300 according to an embodiment of the present invention.

Referring to the drawings, the panel assembly 300 includes a front panel 310 and a rear panel 360 disposed in parallel thereto. Frit glass is applied to edges of the inner surfaces of the front and rear panels 310 and 360 that face each other to form a closed interior space.

The front panel 310 is provided with a front substrate 311 made of a transparent substrate, for example, soda lime glass. X and Y electrodes 312 and 313 are formed on the bottom surface of the front substrate 311 along the X direction of the substrate 311. The X and Y electrodes 312 and 313 are alternately arranged along the Y direction of the front substrate 311.

The X electrode 312 includes a first transparent electrode line 312a formed on an inner surface of the front substrate 311 and a first bus electrode line 312b electrically connected to the first transparent electrode line 312a. Doing. The first bus electrode line 312b is disposed along one edge of the first transparent electrode line 312a, and faces the Y electrode 313 toward an inner wall of the first transparent electrode line 212a. The first protruding electrode 312c extends integrally.

The Y electrode 313 includes a second transparent electrode line 313a formed on an inner surface of the front substrate 311, and a second bus electrode line 313b electrically connected to the second transparent electrode line 313a. have. The second bus electrode line 313b is disposed along one edge of the second transparent electrode line 313a to face the X electrode 312 from an inner side wall of the second transparent electrode line 313a. The second protruding electrode 313c protrudes.

The first transparent electrode line 312a and the first protruding electrode 312c integrally connected thereto and the second transparent electrode line 213a and the second protruding electrode 313c integrally connected thereto have an opening ratio of the front substrate 311. It is made of a transparent conductive film, such as an ITO film (Indium Tin Oxide Film) to improve. The first and second bus electrode lines 312b and 313b reduce the line resistance of the first and second transparent electrode lines 312a and 313a, and have a high conductivity metal material such as silver to improve electrical conductivity. Ag paste or chromium-copper-chromium alloy.

The X and Y electrodes 312 and 313 are embedded by the front dielectric layer 314. The front dielectric layer 314 may be selectively formed only at a portion where the X and Y electrodes 312 and 313 are formed, or may be applied to the entire lower surface of the front substrate 311. A protective layer 315 such as magnesium oxide (MgO) is deposited on the front surface of the front dielectric layer 314 to prevent breakage thereof and to increase secondary electron emission.

The back panel 361 is provided with the back panel 360. The address electrode 362 is disposed on the top surface of the back substrate 361. The address electrode 362 is disposed in a direction crossing the X and Y electrodes 312 and 313. The address electrode 362 may be buried by the back dielectric layer 363.

Meanwhile, a partition 364 is formed between the front and rear panels 310 and 360 to define a discharge space therebetween. The partition 364 includes a first partition 364a disposed in a direction crossing the address electrode 362, and a second partition 364b disposed in a direction parallel to the address electrode 362. The first partition 364a extends integrally in a direction opposite to the inner wall of the pair of adjacent second partitions 364b, and the combined first and second partitions 364a and 364b are formed in a matrix. Brother

A discharge gas such as neon (Ne) -xenon (Xe) or helium (He) -xenon (Xe) is injected into the discharge cells partitioned by the front and rear panels 310 and 360 and the partition 364. It is. In the discharge cells, red, green, and blue phosphor layers 365 that are excited by ultraviolet rays generated from the discharge gas and emit visible light are coated. The red, green, and blue phosphor layers 365 may be applied to any area of the discharge cell.

4 illustrates a plasma display assembly 400 to which the panel assembly 300 of FIG. 3 is applied.

Referring to the drawings, the plasma display assembly 400 includes a panel assembly 300, a chassis base 401 coupled to the panel assembly 300, and a driving circuit unit 404 coupled to the chassis base 401. ), A filter assembly 405 provided in front of the panel assembly 300, and a case 408 for accommodating them together.

The chassis base 401 not only supports the panel assembly 300, but also needs to uniformly disperse high heat generated from the panel assembly 300 to dissipate heat. For this purpose, the chassis base 401 is a material having good thermal conductivity and rigidity. It is manufactured using an aluminum alloy.

Upper and lower ends of the chassis base 401 may further include a chassis reinforcing member 402. Between the chassis base 401 and the driving circuit unit 404 is a flexible printed cable 403 for electrically connecting them.

The filter assembly 405 is installed in front of the panel assembly 300. The filter assembly 405 is provided to block reflection of electromagnetic waves, infrared rays, neon light emission, or external light generated from the panel assembly 300. An antireflection film is attached to the filter assembly 405 to prevent visibility deterioration due to reflection of external light on a transparent substrate, and an electromagnetic wave shielding layer is provided to effectively block electromagnetic waves generated while driving the panel assembly 300. The selective wavelength absorbing film is formed in order 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 case 408 includes a front cabinet 406 installed in front of the filter assembly 405 and a cover back 407 installed behind the chassis base 401 to which the driving circuit unit 404 is attached. A plurality of vent holes 407a are formed at upper and lower ends of the cover back 407.

Here, each of the substrates 311 and 361 of the front and rear panels 310 and 360 are provided with heat deformation preventing means 310a and 360a to prevent deformation during firing.

More specifically, as shown in FIG.

Referring to the drawings, a frit glass 501 is coated on the opposite inner surfaces of the front substrate 311 and the rear substrate 361 so as to couple them. In this case, various types of films are formed on the inner surfaces of the front substrate 311 and the rear substrate 361 as shown in FIG. 3.

In addition, a chassis base 401 is installed on the rear surface of the panel assembly 300, and a double-sided tape 502 is interposed between edges of the panel assembly 300 and the chassis base 401 opposite to each other. The heat conductive medium 503 having adhesiveness is interposed in the center of the opposing face. On the other hand, the rear surface of the chassis base 401 is provided with a driving circuit unit 404 for transmitting an electrical signal with the panel assembly 300.

At this time, the first thermal deformation preventing part 311a having a chamfer shape formed by cutting the front substrate 311 is formed. In addition, a second heat deformation preventing part 361a having a chamfer shape formed by cutting the back substrate 361 is formed at an edge of the rear substrate 361.

The first and second heat deformation preventing parts 311a and 361a respectively form corners of the square front and rear substrates 311 and 361 with one diagonal line, so that the front and rear substrates 311 It is preferable to form the whole 362 in an octagon.

As such, when the corners of the front and rear substrates 311 and 361 are cut and connected with one diagonal line, various types of thin films formed on opposite inner surfaces of the front and rear substrates 311 and 361 are formed. Since the first and second thermal deformation preventing parts 311a and 361a absorb the thermal deformation due to the heat treatment applied at the time of forming, the fear of deformation is reduced.

Such heat deformation preventing means can be formed in various shapes.

That is, as shown in FIG. 6, the curvature 600a may be formed by giving a predetermined curvature to the edge of the substrate 600. In this case, the curved portion 600a does not invade the display area 601 and the dummy area 602 of the substrate 600, and cuts each corner of the terminal area 603 at the edge of the substrate 600. It is desirable to. The terminal region 603 may also be a region to which frit glass for sealing the plurality of substrates 600 is applied later.

In the case of FIG. 7, at least two diagonal lines are connected to each corner of the substrate 700 to form first and second heat deformation preventing parts 700a and 700b, thereby covering the entire substrate 700. It is formed of polygons of square shape or more. Even in this case, the first and second heat deformation preventing parts 700a and 700b are not formed in the display area 701 or the dummy area 702 of the substrate 700, but instead of the terminal area 703. It is formed at each corner.

As described above, the panel assembly of the present invention and the plasma display assembly using the same prevent thermal deformation due to heat applied when forming various types of thin films formed on the inner surface of the substrate by forming a heat deformation preventing means at the edge of the substrate. It can be minimized. For this reason, since frit glass can be apply | coated uniformly to the edge of the inner surface of an opposing board | substrate, the noise of a panel assembly can be reduced.

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.

Claims (9)

A plurality of substrates having a front substrate and a rear substrate disposed to face the substrate; And a plurality of discharge electrodes disposed in discharge cells formed between the front and rear substrates, Plasma display panel, characterized in that the thermal deformation preventing means is formed in the substrate to prevent deformation during firing. The method of claim 1, The thermal deformation preventing means is a plasma display panel, characterized in that the chamfer shape formed by cutting the edge of the substrate. The method of claim 2, The thermal deformation preventing means is formed by forming an edge of the substrate in a single diagonal line, wherein the entire substrate is formed in an octagonal plasma display panel. The method of claim 2, The thermal deformation preventing means is a plasma display panel, characterized in that each of the edges of the substrate formed in a curved line. The method of claim 2, The thermal deformation preventing means is formed by connecting the edges of the substrate with at least two diagonal lines, respectively, so that the entire substrate is formed of an octagonal polygon or more. The method of claim 2, The substrate is divided into a display area for displaying an image, a dummy area at the edge of the display area, and a terminal area at the edge of the dummy area, and the thermal deformation preventing means is formed in the terminal area. . A front panel and a back substrate are disposed to face each other, and a plurality of discharge electrodes are formed on opposite surfaces of the front and rear substrates, and a panel assembly encapsulated by frit glass along opposite surfaces of the front and rear substrates. ; Heat deformation preventing means formed on the front and back substrates to prevent thermal deformation during the firing process; A chassis base disposed behind the panel assembly and supporting the panel assembly; A circuit unit configured to transfer electrical signals between the panel assembly and the chassis base; And And a case accommodating the panel assembly, the chassis base, and the circuit unit together. The method of claim 7, wherein And the heat deformation preventing means has a chamfer shape formed by partially cutting edges of the front and rear substrates. The method of claim 8, The thermal deformation preventing means is a plasma display assembly, characterized in that the edges of the front and back substrate is formed in a curved line or a plurality of diagonal lines, respectively.

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