KR100692096B1 - The Front Filter of Plasma Display Panel, and Method of Manufacturing thereof and Plasma Display Apparatus equip with the same - Google Patents

Abstract

The present invention relates to a front filter for a plasma display panel, a method for manufacturing the same, and a plasma display device having the same, which has an improved structure of an electromagnetic wave shielding film for shielding electromagnetic waves generated when a plasma display panel is driven. It can reduce the defects caused by sticking together, and reduce the material cost and manufacturing cost by reducing the weight and thickness.

The plasma display device of the present invention includes a plasma display panel formed by bonding the front panel and the rear panel, and a front filter formed on the front panel, wherein the front filter is formed by stacking at least one functional film, and the functional film. A conductive adhesive layer containing a conductive material is formed on at least one functional film, and the conductive adhesive layer includes a first adhesive layer and a second adhesive layer having different densities.

Plasma Display Panel, Front Filter, Conductive Adhesive Layer, EMI Layer, Conductive Particles, Mesh

Description

The front filter for plasma display panel and method for manufacturing the same and plasma display device having the same {The Front Filter of Plasma Display Panel, and Method of Manufacturing Equation and Plasma Display Apparatus equip with the same}

1 is a view showing the structure of a typical plasma display panel.

2 is a view showing a glass filter including an electromagnetic wave shielding film of a conventional conductive film type.

3 is a view showing a glass filter including an electromagnetic shielding film of a conventional mesh (Mesh) type.

4 is a diagram illustrating a process of forming an electromagnetic shielding layer (EMI layer) of a front filter for a plasma display panel according to the present invention;

FIG. 5 is a view for explaining the first adhesive layer and the second adhesive layer in more detail as part A of FIG. 4; FIG.

6 is a view for explaining a process of forming a predetermined functional film on top of the first adhesive layer and the second adhesive layer.

7 is a view for explaining a method of manufacturing a glass filter of the front filter for a plasma display panel of the present invention.

Fig. 8 is a diagram showing an example of the structure of a glass filter among the front filters for plasma display panels of the present invention.

9 is a view for explaining another manufacturing method of the glass filter of the front filter for plasma display panel of the present invention.

10 is a view showing another example of the structure of a glass filter among the front filters for plasma display panels of the present invention.

Fig. 11 is a diagram showing an example of the structure of a film filter among the front filters for plasma display panels of the present invention.

Fig. 12 is a view for explaining another example of the structure of a film filter among the front filters for plasma display panels of the present invention.

FIG. 13 is a view for explaining the form of the first adhesive layer included in the front filter for a plasma display panel of the present invention; FIG.

14 is a diagram for explaining the structure of a plasma display device of the present invention;

<Explanation of symbols for the main parts of the drawings>

1301: first adhesive layer 1302: front filter

1400: plasma display device 1401: plasma display panel

1401a: front panel 1401b: rear panel

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 front filter, a method of manufacturing the same, and a plasma display device including the same, which has an improved structure of an electromagnetic shielding film for shielding electromagnetic waves generated when a plasma display panel is driven. It is about.

In general, a plasma display panel is a partition wall formed between a front panel and a rear panel to form one unit cell, and each cell includes neon (Ne), helium (He), or a mixture of neon and helium (Ne + He) and An inert gas containing the same main discharge gas and a small amount of xenon is filled. When discharged by a high frequency voltage, the inert gas generates vacuum ultraviolet rays and emits phosphors formed between the partition walls to realize an image. Such a plasma display panel has a spotlight as a next generation display device because of its thin and light configuration.

1 illustrates a structure of a general plasma display panel.

As shown in FIG. 1, a plasma display panel includes a front panel in which a plurality of sustain electrode pairs formed by pairing a scan electrode 102 and a sustain electrode 103 are arranged on a front glass 101 that is a display surface on which an image is displayed. The rear panel 110 on which the plurality of address electrodes 113 are arranged so as to intersect the plurality of sustain electrode pairs on the back glass 111 forming the back surface 100 and the rear surface is coupled in parallel with a predetermined distance therebetween. .

The front panel 100 is made of a scan electrode 102 and a sustain electrode 103, that is, a transparent electrode (a) formed of a transparent ITO material and a metal material to mutually discharge and maintain light emission of the cells in one discharge cell. The scan electrode 102 and the sustain electrode 103 provided as the bus electrode b are included in pairs. Scan electrode 102 and sustain electrode 103 are covered by one or more dielectric layers 104 that limit discharge current and insulate between electrode pairs, and to facilitate discharge conditions on top of upper dielectric layer 104. A protective layer 105 on which magnesium oxide (MgO) is deposited is formed.

The rear panel 110 is arranged such that a plurality of discharge spaces, that is, barrier ribs 112 of a stripe type (or well type) for forming discharge cells are maintained in parallel. In addition, a plurality of address electrodes 113 which perform address discharge to generate vacuum ultraviolet rays are arranged in parallel with the partition wall 112. On the upper side of the rear panel 110, R, G, and B phosphors 114 which emit visible light for image display during address discharge are coated. A lower dielectric layer 115 is formed between the address electrode 113 and the phosphor 114 to protect the address electrode 113.

The plasma display panel having such a structure realizes an image by applying high voltage and high frequency for plasma discharge, so that the electromagnetic wave is emitted more than the color cathode ray tube (CRT) or the liquid crystal display panel (LCD) in front of the panel glass. have. In addition, the plasma display panel emits near infrared rays (NIR) derived from inert gases such as Ne and Xe. Such near infrared rays are very close to the wavelength of a remote controller of a home appliance, causing malfunctions. As described above, there is a problem of glare of the user due to external light, and there are general problems such as contrast degradation, which is an image quality characteristic of other display devices.

For this reason, the above-mentioned problems have been solved by installing a glass filter or a film filter having a predetermined function in front of the plasma display panel.

On the other hand, the electromagnetic shielding film formed on the glass filter is formed by attaching to a substrate of PET or TAC in a mesh type or a conductive film (Ag / ITO multi-layer) type using a conductive material, as shown in Figs. do.

2 is a view showing a glass filter including an electromagnetic wave shielding film of a conventional conductive film type. First, as shown in (a) of FIG. 2, the glass filter 200 including the electromagnetic wave shielding film of the conductive film type is spaced apart from the PDP (not shown) at regular intervals to prevent UV blocking and reduce external reflected light (AR Coating). , 210), a near infrared shielding film (NIR Coating) 230 for blocking near infrared rays, and an electromagnetic shielding film (EMI coating, 250) for blocking electromagnetic waves, are formed as a unit film.

In more detail, the glass filter 200 has a glass 220 formed on at least one portion of each film having functions such as antireflection, color control, and electromagnetic shielding, and each film is formed of polyethylene terephthalate (PET) or It is attached to the base coating (Base Coating, 240a, 240b, 240c) of a material such as triacetyl cellulose (TAC) to form a unit film, each unit film is bonded to each other by the adhesive film (270a, 270b, 270c). In addition, a black frame 260 is formed on the adhesive film 270b attached to the glass 220.

At this time, the electromagnetic shielding film (EMI coating) 250 for shielding the electromagnetic wave is a ground portion to which the bus bar is grounded using a conductive tape or conductive paste, as shown in FIG. 201 is formed by sputtering metal oxide 203 such as Ag or ITO.

3 is a diagram illustrating a glass filter including an electromagnetic shielding film of a conventional mesh type. First, as shown in FIG. 3A, the glass filter 300 including a mesh type electromagnetic shielding film is spaced apart from the plasma display panel (not shown) at a predetermined interval to reduce ultraviolet rays and external reflected light. An AR coating 310, a NIR coating 330 for blocking near infrared rays, and an EMI coating 350 for blocking electromagnetic waves are formed as a unit film.

In more detail, the glass filter 300 is formed of at least one portion of the glass 320 between the films having functions such as anti-reflection, color control, electromagnetic shielding, each of the films are polyethylene terephthalate (PET) or The base film (340a, 340b, 340c) of a material such as triacetyl cellulose (TAC) is attached to form a unit film, each unit film is bonded to each other by the adhesive film (370a, 370b). In addition, a black frame 360 is formed on the adhesive film 370b attached to the glass 320.

At this time, the electromagnetic shielding film (EMI coating) 350 for blocking the electromagnetic wave forms a ground portion 301 to which the bus bar using the conductive paste is grounded, as shown in FIG. The conductive material is formed by etching a material such as copper (Cu) formed into a mesh 303 to form a mesh film, and then attaching it to the base films 340a, 340b, and 340c using the adhesive films 370a and 370b.

However, the glass filter is manufactured by attaching various functional films such as an anti-reflection film, an electromagnetic wave shielding film, and a near-infrared shielding film to the reinforced glass. In order to attach the above-mentioned functional films to each other, a laminating device is used. At this time, when the respective functional films are attached to each other, the adhesive force is reduced due to the increase in the weight and thickness of the films, thereby reducing the reliability of the product and the functional film. Since a plurality is provided, a rise in material costs is brought about.

On the other hand, in recent years, most of the filters having a predetermined function on the front surface of the plasma display panel have been using a film filter different from the glass filter described above. Such a film filter has no glass on which a predetermined functional unit film such as antireflection, color control, and electromagnetic shielding is formed, which can lead to slimming of the plasma display panel, and is formed of a film in the form of a film. It is advantageous.

However, like the glass filter, the film filter is produced by attaching the various functional films constituting the filter to each other, which causes the same problem as the above-described problem.

In order to solve the above problems, the present invention improves the structure of the electromagnetic shielding film to prevent electromagnetic waves generated when the plasma display panel is driven, thereby reducing the volume of the front filter for the plasma display panel and reducing the manufacturing cost. An object thereof is to provide a front filter, a method of manufacturing the same, and a plasma display device having the same.

The front filter for a plasma display panel of the present invention for achieving the above object is a front filter for a plasma display panel in which at least one functional film is laminated, wherein the conductive adhesive layer includes a conductive material on at least one of the functional films. Is formed, and the conductive adhesive layer comprises a first adhesive layer and a second adhesive layer having different densities.

In addition, the plasma display device of the present invention for achieving the above object includes a plasma display panel formed by the front panel and the rear panel is bonded, and a front filter formed on the front panel, the front filter is at least one functional film is laminated A conductive adhesive layer containing a conductive material is formed on at least one functional film of the functional film, and the conductive adhesive layer includes a first adhesive layer and a second adhesive layer having different densities.

Here, the aforementioned conductive adhesive layer is formed by dispersing the particles of the conductive material in the pressure-sensitive adhesive, the first adhesive layer and the second adhesive layer is characterized in that the distribution density of the particles of the conductive material are different from each other.

In addition, the first pressure-sensitive adhesive layer is characterized in that the distribution density of the particles of the conductive material is higher than the second pressure-sensitive adhesive layer, a portion of the second pressure-sensitive adhesive layer formed by pressing.

In addition, the first adhesive layer is characterized in that the mesh (Mesh) type.

Moreover, the particle | grains of an electroconductive material are characterized by having a particle diameter of 10 nm or more and 100 nm or less.

In addition, the conductive material is characterized in that at least one of Ag, Au, Pt, Cu, Al, Ni.

In addition, the conductive adhesive layer is characterized in that at least any one of the near infrared absorbing dye or color control dye is further included.

In addition, the front filter may be any one of a film filter and a glass filter.

In addition, the manufacturing method of the front filter for plasma display panel of the present invention for achieving the above object, in the method for manufacturing a front filter for plasma display panel, forming a conductive adhesive layer containing a conductive material on at least one surface of the functional film; And pressing the conductive adhesive layer with pressing means having a predetermined pattern.

Here, in the pressing step described above, the conductive adhesive layer is pressed by pressing means having a predetermined pattern to form a first adhesive layer and a second adhesive layer having different densities.

In addition, the conductive adhesive layer is formed by dispersing the particles of the conductive material in the pressure-sensitive adhesive, the first adhesive layer and the second adhesive layer is characterized in that the distribution density of the particles of the conductive material are different from each other.

In addition, the first pressure-sensitive adhesive layer is characterized in that the distribution density of the particles of the conductive material is higher than the second pressure-sensitive adhesive layer, a portion of the second pressure-sensitive adhesive layer is formed by pressing by the pressing means.

In addition, the pressing means has a mesh type pattern, and the first adhesive layer is characterized in that it is formed of a mesh type.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

4 is a view illustrating a process of forming an electromagnetic shielding layer (EMI layer) of a front filter for a plasma display panel according to the present invention.

Referring to FIG. 4, process (a) is a process of forming the conductive adhesive layer 402. In the step (a), the conductive material is included in the pressure-sensitive adhesive to form a conductive pressure-sensitive adhesive material. Thereafter, the conductive adhesive material described above is formed on the base material 401 in the form of a layer to form the conductive adhesive layer 402. Here, the method of including the above-mentioned conductive material in the pressure-sensitive adhesive is to form the conductive pressure-sensitive adhesive material by dispersing the particles of the conductive material in the pressure-sensitive adhesive, and to form the above-mentioned conductive pressure-sensitive adhesive layer 402 with the conductive pressure-sensitive adhesive material.

Here, it is preferable that the particle | grains of the above-mentioned electroconductive substance have a particle diameter of 10 nm or more and 100 nm or less. The reason why the lower limit threshold of the size of the particles contained in the conductive adhesive layer 402 is set to 10 nm or more is difficult to manufacture the particles of the conductive material to 10 nm or less, and even if manufactured, the manufacturing cost increases significantly. This is because the object of the present invention is impaired. In addition, when the particle size of the conductive material is less than 10 nm, it is difficult to sufficiently block harmful electromagnetic waves (EMI) generated when the plasma display panel is driven.

In addition, the upper limit threshold of the size of the particles included in the conductive adhesive layer 402 is set to 100 nm or less. When the size of the particles of the conductive material is 100 nm or more, the light generated in the discharge cells of the plasma display panel (not shown) This is because blocking reduces the efficiency of the plasma display panel. Here, when the size of the particles included in the conductive adhesive layer 402 is set to 100 nm or more, the efficiency of the plasma display panel will be described in more detail.

In general, light that can be perceived by humans is called visible rays, and the wavelength band of the visible rays is 380 nm or more and 770 nm or less. Visible light having such a length of wavelength is not easily scattered by particles having a particle size smaller than its own wavelength, but is easily scattered by particles having a particle size larger than its own wavelength. As a result, as described above, the reason for setting the size of the particles of the conductive material dispersed in the conductive adhesive layer 402 to 100 nm or less is to prevent scattering of light for displaying an image in the plasma display panel. In other words, the size of the particles of the conductive material included in the conductive adhesive layer 402 is 100 nm or less as described above in order to reduce the loss of light of the image displayed on the plasma display panel and thereby suppress the reduction of the overall efficiency of the plasma display panel. Set to.

In addition, the conductive material is preferably at least one of Ag, Au, Pt, Cu, Al, and Ni. That is, the conductive adhesive layer 402 may be formed using only particles of any one of Ag, Au, Pt, Cu, Al, and Ni, as described above. Alternatively, the aforementioned Ag, Au, Pt, Cu, Al, and Ni may be formed. Two or more of them may be selected, and the conductive adhesive layer 402 may be formed using the selected material.

In this way, the conductive adhesive layer 402 formed of the conductive adhesive material is pressed by the predetermined pressing means 403 as in (b). The position on the conductive adhesive layer 402 pressed by the pressing means 403 increases the density of the particles of the conductive material, thereby increasing the frequency of the particles of the conductive material contact each other. Accordingly, the position on the conductive adhesive layer 402 pressed by the above-mentioned pressing means 403 becomes conductive.

Alternatively, the position on the conductive adhesive layer 402 which is not pressed by the pressing means 403 is kept in a state of suppressing scattering of light generated in the plasma display panel. That is, the distribution state of the particle | grains of electroconductive substance does not change.

As such, the structure of the conductive adhesive layer 402 after the pressing process is performed by the pressing means 403 is as shown in (c). That is, in (b), the position on the conductive fastening layer 402 which is pressed by the pressing means 403 and becomes conductive becomes the first adhesive layer 405, and the portion which is not pressed by the pressing means 403 It remains as it is and becomes the 2nd adhesion layer 404.

When comparing the first adhesive layer 405 and the second adhesive layer 404, the first adhesive layer 405 and the second adhesive layer 404 are both conductive adhesive layers 402 of (a) to (b). And the first adhesive layer 405 is included because the portion of the conductive adhesive layer 402 of reference numeral 402 is compressed by the pressing means 403, unlike the second adhesive layer 404. The density of the particles of conductive material is greater than the second adhesive layer 404.

Here, as described above, the shape of the first adhesive layer 405 formed by being pressed by the pressing means 403 is determined by the shape of the pressing means 403. That is, if the pressurizing means 403 which applies pressure is a ladder form, the form of the 1st adhesion layer 405 is also a ladder form. Here, more preferably, in consideration of the function of blocking harmful electromagnetic waves generated when the plasma display panel is driven, the above-described pressing means 403 is in the form of a mesh, and accordingly, the first adhesive layer 405 is formed. The shape of the mesh is also.

As described above, the first adhesive layer 405 and the second adhesive layer 404 formed from one conductive adhesive layer 403 will be described in more detail with reference to FIG. 5.

FIG. 5 is a view for explaining the first adhesive layer and the second adhesive layer in more detail as part A of FIG. 4.

Referring to FIG. 5, the first adhesive layer 405 has a greater distribution density of the particles 500 of the conductive material than the second adhesive layer 404. That is, the first adhesive layer 405 has a smaller gap between the particles 500 of the conductive material than the second adhesive layer 404. Here, in FIG. 5, the particles 500 of the conductive material included in the first adhesive layer 405 are shown to be spaced apart from each other at regular intervals, but the conductive materials included in the first adhesive layer 405 may be formed. Particles 500 are in contact with each other due to the compression by the pressing means 403 of FIG. That is, as shown in FIG. 5, the particles 500 of the conductive material may be distributed in a state separated by a predetermined distance or may be in contact with each other in the first adhesive layer 405. As such, when the interval of the particles 500 of the conductive material in the first adhesive layer 405 is narrower than that of the second adhesive layer 404, or when the particles 500 of the conductive material come into contact with each other, The first adhesive layer 405 has electrical conductivity, that is, conductivity. Accordingly, the EMI generated by the discharge when the plasma display panel is driven is blocked.

As such, after pressing the pressing means 403 to form the first adhesive layer 405 and the second adhesive layer 404, a predetermined functional film such as an antireflection film may be further formed. In conjunction with 6, it is as follows.

FIG. 6 is a view for explaining a process of forming a predetermined functional film on the first adhesive layer and the second adhesive layer.

Referring to FIG. 6, first, as shown in (a), the first adhesive layer 405 and the second adhesive layer 404 are at a height for the reason that the first adhesive layer 405 is formed by pressing by a predetermined pressing means. Will be different. That is, the first pressure-sensitive adhesive layer is formed by locally compressing and compressing the conductive pressure-sensitive adhesive layer 402 of FIG. 4 by the first pressure-sensitive adhesive layer 405 and the non-compression part by the second pressure-sensitive adhesive layer 404. 405 has a height lower than that of the second adhesive layer 404. When the predetermined other functional film 406 is raised and pressurized on the first adhesive layer 405 and the second adhesive layer 404, the first adhesive layer 405 and the second adhesive layer 404 are adhesive materials. The difference in height is compensated for because of its fluidity. For example, a portion of the second adhesive layer 404 having a relatively high height moves to the upper portion of the first adhesive layer 405, so that the first adhesive layer 405 and the second adhesive layer 404 as shown in (b). ) To compensate for the difference in height.

In this way, a glass filter and a film filter among the front filters of the plasma display panel may be manufactured. The manufacturing method of the double glass filter will be described with reference to FIG. 7.

7 is a view for explaining a method of manufacturing a glass filter of the front filter of the plasma display panel of the present invention.

First, a glass for manufacturing a front filter of a plasma display panel is prepared (S700), and a conductive adhesive layer for adhering a predetermined functional unit film is formed (S701). Here, the conductive adhesive layer is formed on at least one functional unit film of the functional unit film, preferably a color dye layer for neon cutting and a near-infrared shielding film for blocking near infrared rays (NIR Coating) on the strengthened glass. Is formed to stick to).

After the above-described step S701, the conductive adhesive layer formed on any one functional unit film is pressed by pressing means having a predetermined pattern (S702). As described above, when the conductive adhesive layer is pressed by the pressing means, the first adhesive layer and the second adhesive layer as shown in FIG. 5 are formed.

Thereafter, a color dye layer for neon cutting and a near-infrared shielding film (NIR Coating) for blocking near infrared rays are formed by laminating or the like (S703). Subsequently, although not shown, an adhesion layer is attached to form a base film of a material such as polyethylene terephthalate (PET) or triacetyl cellulose (TAC) (S43), and an anti-reflection film for reducing UV blocking and external reflected light ( AR coating) is formed (S44). Looking at the structure of the glass filter according to the present invention formed as described above is as shown in FIG.

8 is a diagram showing an example of the structure of a glass filter among the front filters of the plasma display panel of the present invention.

As shown in FIG. 8, the glass filter 800 of the front filter of the plasma display panel of the present invention is a glass 820, an anti-reflection film (AR Coating, 810) for reducing ultraviolet rays and external reflected light, and near-infrared shielding. NIR Coating (830a), color dye layer (830b) and anti-reflection film (AR Coating, 810) for neon cutting and functional unit films 810, 830a, 830b) conductive adhesive layers 870a, 870b, and 870c for adhering to each other.

In more detail, predetermined functional unit films 810 and 830 are formed on the upper surface of the glass 820, and a base film 840 formed of a material such as polyethylene terephthalate (PET) or triacetyl cellulose (TAC) is formed. And conductive adhesive layers 870a, 870b, and 870c for adhering the predetermined functional unit films 810, 830 and the base film 840 described above to the glass 820 and the predetermined functional unit films 810, 830. ) And the matrix film 840.

Here, the predetermined functional unit films 810 and 830 may be formed of an anti-reflective coating (AR Coating) 510 for reducing ultraviolet rays and external reflection light and a color for blocking orange color generated by neon when driving the plasma display panel. Each of a dye layer (830b) and a near infrared shielding film (NIR Coating) 830a for blocking near infrared rays are formed on different sides of the base film 840.

Further, the conductive adhesive layers 870a, 870b, and 870c are formed on at least one functional unit film 810, 830 of the predetermined functional unit films 810, 830, preferably conductive adhesive layer ( 870a is formed on the glass 820 to adhere the strengthened glass 820, the color dye layer 830b described above, and the NIR coating 830a.

The conductive adhesive layer 870a includes a first adhesive layer 880 and a second adhesive layer 890. That is, as described above, the first pressure-sensitive adhesive layer 870a is pressed / pressed by pressing means having a predetermined pattern to form the first pressure-sensitive adhesive layer 880, and the parts not pressed / pressed by the aforementioned pressing means are left as they are. The second adhesive layer 890 remains.

Here, the above-mentioned conductive adhesive layer 870a includes particles of a conductive material 850 which provides conductivity to a predetermined adhesive to block electromagnetic waves. Herein, when the particles 850 of the conductive material are included in a method of being dispersed in the pressure-sensitive adhesive, 380 nm of visible light wavelength using any one or more of Ag, Au, Pt, Cu, Al, and Ni, which are relatively high in conductivity, may be used. It is included in the conductive adhesive layer 870a in the form of a powder having a size of 10 nm or more and 100 nm or less smaller than 780 nm or less.

The glass filter 800 of the present invention formed as described above is formed by dispersing particles of the conductive material 850 in the adhesive of the glass 820 and the above-mentioned conductive adhesive layer 870a, and thus, on the panel surface during the driving of the plasma display panel. The accumulated charge is quickly conducted to the frame (not shown) to effectively block EMI.

Therefore, the glass filter according to the present invention effectively blocks EMI generated when the plasma display panel is driven even when the glass filter is not provided with an EMI shielding film, and reduces the cost required to provide the EMI shielding film. It is possible to reduce the slimness and reduce the overall manufacturing cost of the plasma display device.

Meanwhile, in the above description, a color dye layer and a near infrared shielding layer and a conductive adhesive layer including particles of a conductive material for blocking EMI are separately formed. Alternatively, a color dye or a near infrared blocking dye is formed on the conductive adhesive layer containing particles of a conductive material. A method of manufacturing a glass filter among the front filters of the plasma display panel may be described with reference to FIG. 9.

9 is a view for explaining another manufacturing method of the glass filter of the front filter of the plasma display panel of the present invention.

As shown in FIG. 9, the glass filter according to the present invention first prepares a strengthened glass (S900), and forms a conductive adhesive layer for adhering another functional unit film (S901). Here, the conductive adhesive layer includes particles of a conductive material in a predetermined adhesive, and also a color dye for blocking orange color generated by neon when driving the plasma display panel, and a near infrared shielding dye for blocking near infrared rays. More included. That is, the front filter of FIG. 9 does not separately form the color dye layer of 830b and the near-infrared shielding film of 830a in comparison with FIG. 8, and includes the color dye and the near infrared blocking dye together with the particles of the conductive material in the conductive adhesive layer. . Accordingly, one conductive adhesive layer blocks EMI generated when the plasma display panel is driven, and also blocks the orange color generated by Ne, and also blocks near infrared rays.

In addition, as described above, it is also possible to include both the color dye and the near infrared ray blocking dye in the conductive adhesive layer, but any one of such color dyes and the near infrared ray blocking dye may be selected and only one selected may be included in the conductive adhesive layer. . For example, the conductive adhesive layer is formed by including the particles of the conductive material and the near-infrared blocking dye in a predetermined pressure-sensitive adhesive to block EMI and near infrared rays with the conductive adhesive layer, and the color dye layer with the conductive adhesive layer described above. It can be formed separately to block the orange color caused by Ne.

Subsequent steps are substantially the same as in FIG. 7, and thus redundant descriptions are omitted.

Looking at the structure of the glass filter manufactured in this way as shown in FIG.

10 is a view showing another example of the structure of the glass filter of the front filter of the plasma display panel of the present invention.

As shown in FIG. 10, the glass filter 1000 of the front surface filter of the plasma display panel of FIG. A color dye layer (block 830b) for blocking and a near infrared shield (NIR Coating) for sign 830a for blocking near infrared rays are omitted.

As described above with reference to FIG. 9, the conductive adhesive layer 1070a further includes not only the particles 1050 of the conductive material, but also a color dye 1090a and a near infrared ray blocking dye 1090b. ), While blocking the EMI and preventing the orange color due to neon (Ne) and to block the near infrared rays, the color dye layer and the near infrared shielding film as shown in Figure 8 is omitted.

Since the structure of the glass filter 1000 of FIG. 10 is substantially the same as the glass filter 800 of FIG. 8, overlapping description thereof will be omitted.

The glass filter 1000 of FIG. 10 having such a structure omits the color dye layer and the near-infrared shielding film as compared to FIG. 8, thereby further reducing its volume, thereby making the plasma display device more slim.

Meanwhile, although only the case of the glass filter among the front filters of the plasma display panel has been illustrated and described, the present invention may be applied to a film filter having a structure attached to the display surface of the plasma display panel, unlike the glass filter. However, this case will be described with reference to FIG. 11.

11 is a diagram showing an example of the structure of a film filter among the front filters of the plasma display panel of the present invention.

As shown in FIG. 11, the film filter 1101 of the front filter of the plasma display panel of the present invention includes a predetermined functional unit film such as antireflection, color control, and electromagnetic shielding, similar to the above-described glass filter. However, the functional unit layer is not formed on the glass but is directly attached to the front surface of the plasma display panel.

Like the glass filter 800 shown in FIG. 8, the film filter 1101 is formed with an antireflection film 1110 on one side of the base film 1140, and a color dye layer 1130b and a near infrared shielding film 1130a on the other side. ) Is formed of one unit film 1130 and adhered to each of the adhesive layers 1170a, 1170b, and 1170c.

Likewise, as shown in FIG. 8, the conductive adhesive layers 1170a, 1170b, and 1170c, in which the conductive adhesive particles are included in a predetermined adhesive material, may contain at least one or more of the above-described functional unit membranes 1110 and 1130. It is formed on the functional unit membranes 1110 and 1130. Preferably, the conductive adhesive layer 1170a is formed below the color dye layer 1130b and the near-infrared shielding film 1130a constituting one unit film.

However, in FIG. 8, since the conductive adhesive layer 970a is formed on the glass, the conductive adhesive layer 970a on the glass is pressed / pressed by a predetermined pressing means to form the first adhesive layer 1180 and the second adhesive layer ( 1190, the formation direction of the first adhesive layer 1180 is the direction in which the glass is located, but since the glass of FIG. 8 is omitted in FIG. 11 here, the formation direction of the first adhesive layer 1180 is the known film ( 1140 is shown in the direction in which it is located. However, the formation direction of the first adhesive layer 1180 is not limited thereto.

The structure of the film filter of FIG. 11 is that the glass is omitted in comparison with the case of FIG.

The film filter 1101 of the present invention formed as described above does not have an electromagnetic wave shielding layer for EMI shielding, and forms a conductive adhesive layer by dispersing particles of the conductive material in the adhesive material for attaching the functional films. By pressing / pressing by a predetermined pressing means to form the first adhesive layer 1180 and the second adhesive layer 1190, the volume of the entire film filter is reduced, and as a result, the overall plasma display apparatus can be slimmed.

In addition, by eliminating the cost of having a separate electromagnetic shielding layer for shielding EMI, it is possible to reduce the overall manufacturing cost of the plasma display device.

Meanwhile, in the above description, a color dye layer and a near infrared shielding layer and a conductive adhesive layer including particles of a conductive material for blocking EMI are separately formed. Alternatively, a color dye or a near infrared blocking dye is formed on the conductive adhesive layer containing particles of a conductive material. The structure of the film filter among the front filters of the plasma display panel is shown in FIG. 12.

12 is a view for explaining another example of the structure of a film filter among the front filters of the plasma display panel of the present invention.

As shown in FIG. 12, the film filter 1200 among the front filters of the plasma display panel of the present invention has an orange color generated by neon when the plasma display panel is driven, compared to the film filter 1101 of FIG. 11. The color dye layer 1130b for blocking and the NIR Coating of 1130a for blocking near infrared are omitted.

This further includes a color dye 1190a and a near-infrared shielding dye 1190b as well as particles 1150 of the conductive material in the conductive adhesive layer 1170a, and together with the conductive adhesive layer 1170a to block EMI The color dye layer and the near-infrared shielding film as shown in FIG. 11 are omitted since the function of preventing the orange color due to (Ne) and blocking the near infrared rays is performed.

Since the structure of the film filter 1200 of FIG. 12 is substantially the same as the film filter 1101 of FIG. 11, the overlapping description thereof will be omitted.

The film filter 1200 of FIG. 12 having such a structure omits the color dye layer and the near-infrared shielding film as compared to FIG. 11, thereby further reducing the volume thereof, thereby making the plasma display device more slim.

The shape of the first adhesive layer described above is preferably formed in a mesh shape in order to more effectively block EMI. Looking at the shape of the first adhesive layer as shown in FIG.

13 is a view for explaining the form of the first adhesive layer included in the front filter for a plasma display panel of the present invention.

As illustrated in FIG. 13, the first adhesive layer 1302 included in the front filter 1301 for the plasma display panel may have a mesh shape in which vertical and horizontal lines cross each other. Although not illustrated, the mesh-shaped first adhesive layer is connected to a frame for supporting and fixing the plasma display panel to block EMI generated when the plasma display panel is driven.

The front filter for a plasma display panel of the present invention having such a structure is attached to the front surface of the plasma display panel to form a plasma display device. The structure of such a plasma display device is shown in FIG.

14 is a view for explaining the structure of the plasma display device of the present invention.

As shown in FIG. 14, the front filter 1302 has a mesh shape on the front surface of the plasma display panel 1401 in which the front panel 1401a and the rear panel 1401b are joined together. 1301 is attached to form a plasma display device 1400.

The plasma display device 1400 formed as described above has a smaller volume of the front filter 1301 attached to the front surface of the plasma display device 1400 than the conventional front filter, thereby reducing the overall volume and making it slim.

Those skilled in the art to which the present invention pertains will understand that the present invention can be implemented in other specific forms without changing the technical spirit or essential features.

Therefore, the above-described embodiments are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the appended claims rather than the detailed description, and the meaning and scope of the claims and All changes or modifications derived from the equivalent concept should be interpreted as being included in the scope of the present invention.

As described above, the present invention forms a conductive adhesive layer by including particles of a conductive material in a predetermined adhesive material without attaching a separate electromagnetic wave shielding film, and presses / presses the conductive adhesive layer with a predetermined pressing means. By forming the first adhesive layer in the form of a mesh, it is possible to reduce the defects generated when the functional films are bonded to each other, and to reduce the manufacturing cost and to reduce the overall weight and thickness of the plasma display device, thereby making it slim. It is effective.

Claims (14)

A front filter for a plasma display panel in which at least one functional film is laminated, A conductive adhesive layer containing a conductive material is formed on at least one of the functional films, The conductive adhesive layer includes a first adhesive layer and a second adhesive layer having different densities, and a front filter for a plasma display panel. A plasma display panel comprising a front panel and a rear panel joined together; Including a front filter formed on the front panel, The front filter is formed by laminating at least one functional film, a conductive adhesive layer containing a conductive material is formed on at least one of the functional film, And the conductive adhesive layer includes a first adhesive layer and a second adhesive layer having different densities. The method of claim 2, The conductive adhesive layer is The particles of the conductive material are dispersed in the pressure-sensitive adhesive, And the first and second adhesive layers have different distribution densities of particles of the conductive material. The method of claim 3, wherein The first adhesive layer is And a distribution density of the particles of the conductive material is higher than that of the second adhesive layer, and a portion of the second adhesive layer is formed by compression. The method of claim 4, wherein The first adhesive layer is Plasma display device characterized in that the mesh (Mesh) type. The method according to claim 3 or 4, Particles of the conductive material has a particle size of 10nm or more and 100nm or less. The method according to claim 3 or 4, The conductive material is at least one of Ag, Au, Pt, Cu, Al, Ni. The method of claim 2 or 3, In the conductive adhesive layer And at least one of a near infrared absorbing dye or a color control dye. The method of claim 2, The front filter may be any one of a film filter and a glass filter. In the front filter manufacturing method for a plasma display panel, (a) forming a conductive adhesive layer comprising a conductive material on one surface of at least one functional film, (b) pressing the conductive adhesive layer with pressing means having a predetermined pattern; Method of manufacturing a front filter for a plasma display panel comprising a. The method of claim 10, In the pressing step And pressing the conductive adhesive layer by pressing means having a predetermined pattern to form a first adhesive layer and a second adhesive layer having different densities. The method of claim 11, The conductive adhesive layer is The particles of the conductive material are dispersed in the pressure-sensitive adhesive, The first adhesive layer and the second adhesive layer is a manufacturing method of the front filter for a plasma display panel, characterized in that the distribution density of the particles of the conductive material are different. The method of claim 12, The first adhesive layer is A distribution density of particles of the conductive material is higher than that of the second adhesive layer, and a part of the second adhesive layer is formed by being pressed by the pressing means. The method of claim 11, The pressing means has a mesh type pattern, The first adhesive layer is formed of a mesh (mesh) type, characterized in that the manufacturing method of the front filter for a plasma display panel.

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